fix(agent): keep panel mounted under dialogs

The agent could only ever see the last-messaged tab because saved tabs
had no id the agent service recognizes. The Cloud Ingest workflows API
turns out to be that id space (live-verified: its ids are accepted by
the messages and draft endpoints), so every message now refreshes a
name-to-id index from GET /workflows (paginated, capped, warn on
truncation) and resolves each open saved tab through it, with the
ack-binding store as fallback for unsaved tabs. Reverse resolution
activates the existing tab on switch_tab instead of minting a copy.

Ambiguity never guesses: duplicate or nameless cloud records and
same-named open tabs are excluded from resolution and fall back to
path-exact bindings. The per-send refresh is raced against a timeout
so a slow index can never block sending.

Draft-bearing sends that 5xx now retry once without the draft so a
drafts outage degrades to plain chat, re-arming the upload for the
next message.

.env_example

@@ -41,6 +41,9 @@ ALGOLIA_API_KEY=684d998c36b67a9a9fce8fc2d8860579
 # Enable PostHog debug logging in the browser console.
 # VITE_POSTHOG_DEBUG=true
 
+# Send local dev PostHog events to the staging project (cloud mode only).
+# VITE_POSTHOG_PROJECT_TOKEN=
+
 # Override staging comfy-api / comfy-platform base URLs.
 # VITE_STAGING_API_BASE_URL=https://stagingapi.comfy.org
 # VITE_STAGING_PLATFORM_BASE_URL=https://stagingplatform.comfy.org

browser_tests/tests/agent/agentPanel.spec.ts

@@ -0,0 +1,147 @@
+import type { WebSocketRoute } from '@playwright/test'
+import { expect, mergeTests } from '@playwright/test'
+
+import { comfyPageFixture } from '@e2e/fixtures/ComfyPage'
+import { webSocketFixture } from '@e2e/fixtures/ws'
+
+import enMessages from '@/locales/en/main.json' with { type: 'json' }
+import type { AgentWsEvent } from '@/workbench/extensions/agent/schemas/agentApiSchema'
+
+import {
+  DRAFT_PATCH,
+  MESSAGE_DELTA_EVENT,
+  MESSAGE_DONE_EVENT,
+  THINKING_EVENT,
+  TOOL_CALL_EVENT,
+  mockAgentBoot
+} from '@e2e/tests/agent/agentPanelMocks'
+
+type AgentFixtures = {
+  agentFlagEnabled: boolean
+  postedMessages: string[]
+}
+
+const agentCloudFixture = comfyPageFixture.extend<AgentFixtures>({
+  agentFlagEnabled: [true, { option: true }],
+  postedMessages: async ({}, use) => {
+    await use([])
+  },
+  page: async ({ page, agentFlagEnabled, postedMessages }, use) => {
+    await mockAgentBoot(page, { agentFlag: agentFlagEnabled, postedMessages })
+    await use(page)
+  }
+})
+
+const test = mergeTests(agentCloudFixture, webSocketFixture)
+
+const OPEN_AGENT_LABEL = enMessages.agent.askComfyAgent
+
+function pushEvent(ws: WebSocketRoute, event: AgentWsEvent): void {
+  ws.send(JSON.stringify(event))
+}
+
+test.describe('In-App Agent panel', { tag: '@cloud' }, () => {
+  test.describe('flag off', () => {
+    test.use({ agentFlagEnabled: false })
+
+    test('does not expose the Ask Comfy Agent button', async ({
+      comfyPage,
+      postedMessages
+    }) => {
+      expect(postedMessages).toHaveLength(0)
+
+      await expect(
+        comfyPage.page.getByRole('button', { name: OPEN_AGENT_LABEL })
+      ).toHaveCount(0)
+    })
+  })
+
+  test('shows the greeting, inserts a suggested prompt, and completes a chat turn', async ({
+    comfyPage,
+    postedMessages,
+    getWebSocket
+  }) => {
+    test.setTimeout(30_000)
+
+    const page = comfyPage.page
+
+    const openButton = page.getByRole('button', { name: OPEN_AGENT_LABEL })
+    await expect(openButton).toBeVisible()
+    await openButton.click()
+
+    const panel = page.locator('#agent-panel-root')
+    await expect(panel).toBeVisible()
+
+    await expect(panel.getByText(/^Hello/)).toBeVisible()
+    await expect(panel.getByText('What do you want to make?')).toBeVisible()
+    const firstPrompt = enMessages.agent.suggestedPrompts[0]
+    const promptChip = panel.getByRole('button', { name: firstPrompt })
+    await expect(promptChip).toBeVisible()
+
+    const composer = panel.getByPlaceholder(enMessages.agent.placeholder)
+    const sendButton = panel.getByRole('button', { name: 'Send' })
+
+    await expect(composer).toHaveValue('')
+    await promptChip.click()
+    await expect(composer).toHaveValue(firstPrompt)
+    expect(
+      postedMessages,
+      'inserting a prompt must not POST a message'
+    ).toHaveLength(0)
+
+    const ws = await getWebSocket()
+    await sendButton.click()
+    await expect.poll(() => postedMessages.length).toBeGreaterThanOrEqual(1)
+    expect(postedMessages[0]).toContain(firstPrompt)
+    await expect(composer).toHaveValue('')
+
+    pushEvent(ws, THINKING_EVENT)
+    await expect(panel.getByText('Thinking...')).toBeVisible()
+
+    pushEvent(ws, TOOL_CALL_EVENT)
+    await expect(panel.getByText('Ran 1 tool call')).toBeVisible()
+
+    pushEvent(ws, MESSAGE_DELTA_EVENT)
+    await expect(
+      panel.locator('strong', { hasText: 'fully ready' })
+    ).toBeVisible()
+    await expect(panel.getByText('Thinking...')).toBeHidden()
+
+    pushEvent(ws, MESSAGE_DONE_EVENT)
+    await expect(panel.getByRole('button', { name: 'Send' })).toBeVisible()
+    await expect(panel.getByRole('button', { name: 'Stop' })).toHaveCount(0)
+  })
+
+  test('applies a draft_patch graph to the canvas', async ({
+    comfyPage,
+    postedMessages,
+    getWebSocket
+  }) => {
+    test.setTimeout(30_000)
+
+    const page = comfyPage.page
+    const panel = page.locator('#agent-panel-root')
+
+    const openButton = page.getByRole('button', { name: OPEN_AGENT_LABEL })
+    await expect(openButton).toBeVisible()
+    await openButton.click()
+    await expect(panel).toBeVisible()
+
+    await panel.getByPlaceholder(enMessages.agent.placeholder).fill('Build it')
+    await panel.getByRole('button', { name: 'Send' }).click()
+    await expect.poll(() => postedMessages.length).toBeGreaterThanOrEqual(1)
+
+    const ws = await getWebSocket()
+    pushEvent(ws, { type: 'draft_patch', data: DRAFT_PATCH })
+
+    await expect
+      .poll(() => page.evaluate(() => window.app!.graph!.nodes.length))
+      .toBe(2)
+    const nodeTypes = await page.evaluate(() =>
+      window.app!.graph!.nodes.map((n) => n.type)
+    )
+    expect(nodeTypes).toEqual(
+      expect.arrayContaining(['CheckpointLoaderSimple', 'SaveImage'])
+    )
+  })
+})

browser_tests/tests/agent/agentPanelMocks.ts

@@ -0,0 +1,229 @@
+import type { Page, Route } from '@playwright/test'
+
+import type { RemoteConfig } from '@/platform/remoteConfig/types'
+import type {
+  AgentDraftSnapshot,
+  AgentTurnAccepted,
+  AgentWsEvent,
+  DraftPatchData
+} from '@/workbench/extensions/agent/schemas/agentApiSchema'
+import type { ComfyWorkflowJSON } from '@/platform/workflow/validation/schemas/workflowSchema'
+
+import { mockSystemStats } from '@e2e/fixtures/data/systemStats'
+import { mockBilling } from '@e2e/fixtures/utils/cloudBillingMocks'
+import { jsonRoute } from '@e2e/fixtures/utils/jsonRoute'
+
+const THREAD_ID = 'd4c016c4-3b8c-44cf-97de-1ae27e43e718'
+const TURN_ID = '3818ba00-d772-4a3f-98c1-9312725b577d'
+const WORKFLOW_ID = 'a81718a4-02ae-41e6-ae85-c33b7bb880f6'
+
+const TURN_ACCEPTED: AgentTurnAccepted = {
+  message_id: TURN_ID,
+  thread_id: THREAD_ID,
+  workflow_id: WORKFLOW_ID
+}
+
+const DRAFT_GRAPH: ComfyWorkflowJSON = {
+  version: 0.4,
+  last_node_id: 2,
+  last_link_id: 0,
+  nodes: [
+    {
+      id: 1,
+      type: 'CheckpointLoaderSimple',
+      pos: [100, 300],
+      size: [210, 100],
+      flags: {},
+      order: 0,
+      mode: 0,
+      inputs: [],
+      outputs: [
+        { name: 'MODEL', type: 'MODEL', links: [] },
+        { name: 'CLIP', type: 'CLIP', links: [] },
+        { name: 'VAE', type: 'VAE', links: [] }
+      ],
+      properties: {},
+      widgets_values: ['sd_xl_base_1.0.safetensors']
+    },
+    {
+      id: 2,
+      type: 'SaveImage',
+      pos: [1400, 300],
+      size: [210, 100],
+      flags: {},
+      order: 1,
+      mode: 0,
+      inputs: [{ name: 'images', type: 'IMAGE', link: null }],
+      outputs: [],
+      properties: {},
+      widgets_values: ['ComfyUI']
+    }
+  ],
+  links: []
+}
+
+const DRAFT_SNAPSHOT: AgentDraftSnapshot = {
+  content: DRAFT_GRAPH as unknown as Record<string, unknown>,
+  version: 24
+}
+
+export const DRAFT_PATCH: DraftPatchData = {
+  base_version: 24,
+  version: 25,
+  content: DRAFT_GRAPH as unknown as Record<string, unknown>,
+  workflow_id: WORKFLOW_ID,
+  message_id: TURN_ID,
+  thread_id: THREAD_ID
+}
+
+export const THINKING_EVENT: AgentWsEvent = {
+  type: 'agent_thinking',
+  data: {
+    delta: "I'll set the positive prompt to your red fox scene.",
+    message_id: TURN_ID,
+    thread_id: THREAD_ID
+  }
+}
+
+export const TOOL_CALL_EVENT: AgentWsEvent = {
+  type: 'agent_tool_call',
+  data: {
+    tool_name: 'set_widget',
+    status: 'ok',
+    args: ['workflow', 'set-widget', 'workflow.json'],
+    message_id: TURN_ID,
+    thread_id: THREAD_ID
+  }
+}
+
+const MESSAGE_DELTA_TEXT =
+  'The graph is **fully ready** to go — prompt set to the red fox in the snow.'
+
+export const MESSAGE_DELTA_EVENT: AgentWsEvent = {
+  type: 'agent_message_delta',
+  data: {
+    delta: MESSAGE_DELTA_TEXT,
+    message_id: TURN_ID,
+    thread_id: THREAD_ID
+  }
+}
+
+export const MESSAGE_DONE_EVENT: AgentWsEvent = {
+  type: 'agent_message_done',
+  data: {
+    message_id: TURN_ID,
+    thread_id: THREAD_ID,
+    usage: {
+      input_tokens: 4493,
+      output_tokens: 425,
+      total_tokens: 12393,
+      cache_read_input_tokens: 35596,
+      cache_creation_input_tokens: 0
+    }
+  }
+}
+
+function agentFeatures(agentFlag: boolean): RemoteConfig {
+  return {
+    team_workspaces_enabled: true,
+    posthog_project_token: 'phc_e2e_agent_panel',
+    posthog_config: {
+      advanced_disable_flags: true,
+      bootstrap: {
+        featureFlags: { 'agent-in-app-experience': agentFlag }
+      }
+    }
+  }
+}
+
+export async function mockAgentBoot(
+  page: Page,
+  {
+    agentFlag,
+    postedMessages
+  }: { agentFlag: boolean; postedMessages: string[] }
+): Promise<void> {
+  await page.addInitScript(() => {
+    localStorage.setItem('Comfy.AgentPanel.onboarded', 'true')
+  })
+
+  await mockBilling(page)
+  await page.route('**/api/assets**', (r) =>
+    r.fulfill(jsonRoute({ assets: [] }))
+  )
+
+  await page.route('**/api/features', (r) =>
+    r.fulfill(jsonRoute(agentFeatures(agentFlag)))
+  )
+  await page.route('**/api/system_stats', (r) =>
+    r.fulfill(jsonRoute(mockSystemStats))
+  )
+  await page.route('**/api/users', (r) =>
+    r.fulfill(
+      jsonRoute({
+        storage: 'server',
+        migrated: true,
+        users: { 'test-user-e2e': 'E2E Test User' }
+      })
+    )
+  )
+  await page.route('**/api/settings', (r) =>
+    r.fulfill(
+      jsonRoute({
+        'Comfy.TutorialCompleted': true,
+        'Comfy.RightSidePanel.ShowErrorsTab': false
+      })
+    )
+  )
+  await page.route('**/api/userdata**', (r) => r.fulfill(jsonRoute([])))
+  await page.route('**/api/extensions', (r) => r.fulfill(jsonRoute([])))
+  await page.route('**/api/object_info', (r) => r.fulfill(jsonRoute({})))
+  await page.route('**/api/global_subgraphs', (r) => r.fulfill(jsonRoute({})))
+  await page.route('**/api/i18n', (r) => r.fulfill(jsonRoute({})))
+  await page.route('**/api/auth/session', (r) =>
+    r.fulfill(jsonRoute({ token: 'mock-workspace-token' }))
+  )
+  await page.route('**/api/auth/token', (r) =>
+    r.fulfill(
+      jsonRoute({
+        token: 'mock-workspace-token',
+        expires_at: '2100-01-01T00:00:00.000Z',
+        workspace: { id: 'ws-personal', name: 'Personal', type: 'personal' },
+        role: 'owner',
+        permissions: ['owner:*']
+      })
+    )
+  )
+  await page.route('**/releases**', (r) => r.fulfill(jsonRoute([])))
+  await page.route('**/api/workspaces', (r) =>
+    r.fulfill(
+      jsonRoute({
+        workspaces: [
+          {
+            id: 'ws-personal',
+            name: 'Personal',
+            type: 'personal',
+            role: 'owner'
+          }
+        ]
+      })
+    )
+  )
+
+  await page.route('**/api/agent/threads/*/messages', (route: Route) => {
+    const request = route.request()
+    if (request.method() === 'POST') {
+      postedMessages.push(request.postData() ?? '')
+      return route.fulfill({
+        status: 202,
+        contentType: 'application/json',
+        body: JSON.stringify(TURN_ACCEPTED)
+      })
+    }
+    return route.fulfill(jsonRoute([]))
+  })
+
+  await page.route('**/api/agent/draft**', (r) =>
+    r.fulfill(jsonRoute(DRAFT_SNAPSHOT))
+  )
+}

pnpm-lock.yaml

@@ -167,7 +167,7 @@ catalogs:
       version: 2.0.1
     '@vitejs/plugin-vue':
       specifier: ^6.0.0
-      version: 6.0.3
+      version: 6.0.7
     '@vitest/coverage-v8':
       specifier: ^4.0.16
       version: 4.0.16
@@ -380,7 +380,7 @@ catalogs:
       version: 3.2.2
     vite-plugin-vue-devtools:
       specifier: ^8.0.0
-      version: 8.0.5
+      version: 8.1.2
     vitest:
       specifier: ^4.1.0
       version: 4.1.8
@@ -389,7 +389,7 @@ catalogs:
       version: 3.5.34
     vue-component-type-helpers:
       specifier: ^3.2.1
-      version: 3.3.2
+      version: 3.3.7
     vue-eslint-parser:
       specifier: ^10.4.0
       version: 10.4.0
@@ -717,7 +717,7 @@ importers:
         version: 0.184.1
       '@vitejs/plugin-vue':
         specifier: 'catalog:'
-        version: 6.0.3(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
+        version: 6.0.7(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
       '@vitest/coverage-v8':
         specifier: 'catalog:'
         version: 4.0.16(vitest@4.1.8)
@@ -861,13 +861,13 @@ importers:
         version: 3.2.2(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
       vite-plugin-vue-devtools:
         specifier: 'catalog:'
-        version: 8.0.5(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
+        version: 8.1.2(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
       vitest:
         specifier: 'catalog:'
         version: 4.1.8(@opentelemetry/api@1.9.0)(@types/node@24.10.4)(@vitest/coverage-v8@4.0.16)(@vitest/ui@4.0.16)(happy-dom@20.9.0)(jsdom@27.4.0)(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
       vue-component-type-helpers:
         specifier: 'catalog:'
-        version: 3.3.2
+        version: 3.3.7
       vue-eslint-parser:
         specifier: 'catalog:'
         version: 10.4.0(eslint@10.4.0(jiti@2.6.1))
@@ -925,7 +925,7 @@ importers:
         version: 4.3.0(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
       '@vitejs/plugin-vue':
         specifier: 'catalog:'
-        version: 6.0.3(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
+        version: 6.0.7(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
       dotenv:
         specifier: 'catalog:'
         version: 16.6.1
@@ -943,7 +943,7 @@ importers:
         version: 3.2.2(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
       vite-plugin-vue-devtools:
         specifier: 'catalog:'
-        version: 8.0.5(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
+        version: 8.1.2(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
       vue-tsc:
         specifier: 'catalog:'
         version: 3.2.5(typescript@5.9.3)
@@ -1037,7 +1037,7 @@ importers:
         version: 4.1.8(@opentelemetry/api@1.9.0)(@types/node@25.0.3)(@vitest/coverage-v8@4.0.16(vitest@4.1.8))(@vitest/ui@4.0.16(vitest@4.1.8))(happy-dom@20.9.0)(jsdom@27.4.0)(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
       vue-component-type-helpers:
         specifier: 'catalog:'
-        version: 3.3.2
+        version: 3.3.7
 
   packages/comfyui-desktop-bridge-types: {}
 
@@ -3305,9 +3305,6 @@ packages:
     cpu: [x64]
     os: [win32]
 
-  '@rolldown/pluginutils@1.0.0-beta.53':
-    resolution: {integrity: sha512-vENRlFU4YbrwVqNDZ7fLvy+JR1CRkyr01jhSiDpE1u6py3OMzQfztQU2jxykW3ALNxO4kSlqIDeYyD0Y9RcQeQ==}
-
   '@rolldown/pluginutils@1.0.1':
     resolution: {integrity: sha512-2j9bGt5Jh8hj+vPtgzPtl72j0yRxHAyumoo6TNfAjsLB04UtpSvPbPcDcBMxz7n+9CYB0c1GxQFxYRg2jimqGw==}
 
@@ -3467,32 +3464,32 @@ packages:
       pinia:
         optional: true
 
-  '@shikijs/core@4.1.0':
-    resolution: {integrity: sha512-jLJtSJeuFffqX6/inRE1zqU5aFv2hrszvYgq3OjbAgFRZiWv7abKMDdQzYxuSDfmUPQozZvI/kuy6VMTvnvqTQ==}
+  '@shikijs/core@4.3.1':
+    resolution: {integrity: sha512-ANMDxuaPsNMdDC1m4vfvhlDmJweMwkE5XitTwrq2rWHx5jM+dlm4MmHt2PP6t0uejfR77SuhrhJ0zEijIF/uhA==}
     engines: {node: '>=20'}
 
-  '@shikijs/engine-javascript@4.1.0':
-    resolution: {integrity: sha512-YquhawCUgaBfhsS72e2Y/dI59gCBNPHu3fEO/tvLaXrTssxZrY5ddjtNLTwndrMgPo8b3IscE+xoICDzpTmlFQ==}
+  '@shikijs/engine-javascript@4.3.1':
+    resolution: {integrity: sha512-JBItcnPuYq7jVJdZo/vMj94r+szT7XEjHFX+mvFDGSEIbVAXAGyHAHzhbWzpGOwYidCZrErJLLgn2PVeiokHnQ==}
     engines: {node: '>=20'}
 
-  '@shikijs/engine-oniguruma@4.1.0':
-    resolution: {integrity: sha512-axLpjVs45YBvvINa+dJF+NPW+KtFkNXsFr4SDw2BMj9GdeMnGxVB9PQb2xXlJYovslt/nz6giedAyOANkfc7hg==}
+  '@shikijs/engine-oniguruma@4.3.1':
+    resolution: {integrity: sha512-OXyNMzg0pews+msMj4cHeqT4xiYKKvbnn6VbdAXxfoFl3SSx4fJTc8FadECuc5/H9p3BzhNAoAUXKwAu9rWYhg==}
     engines: {node: '>=20'}
 
-  '@shikijs/langs@4.1.0':
-    resolution: {integrity: sha512-nwOMruEkbgdZfQ/b8CgpNBVOpvG1k0N5tbmgiFeqsan401+x3ILqlzZJowSla4Agmq4hG2Uf2wh5jLTEhR8VSg==}
+  '@shikijs/langs@4.3.1':
+    resolution: {integrity: sha512-m0l9nsDqgBHvbZbk7A0/kXz/impK3uB/c6rAn6Gpg/uPtdZRQ+alsN/17MU5thb68XTj/4DxkZAotrM0GGSpDQ==}
     engines: {node: '>=20'}
 
-  '@shikijs/primitive@4.1.0':
-    resolution: {integrity: sha512-zx2/2Uwj2q9X3KSyYREEhXO23xBw5WUhP4orK2lE4r+t9JGITmEe0JH+wPmJhqHpOT2bRRs6lAL945+LDvOAGw==}
+  '@shikijs/primitive@4.3.1':
+    resolution: {integrity: sha512-CXQRQOYy1leqQ8ceTeJdmXv/bsUY++6QyLpXJ94LZAAYj5X2SKRdc5ipguv4NPyGVKItB2PPwUpRNe0Sjh5S1A==}
     engines: {node: '>=20'}
 
-  '@shikijs/themes@4.1.0':
-    resolution: {integrity: sha512-emCcTnUM7yO2wltYbaxm+yLvcCI4+h8XBKc4KmJ7EZUXoSGjcCHifkI//R4OFit9ewpg7H2/9tjOuXrT2v/Knw==}
+  '@shikijs/themes@4.3.1':
+    resolution: {integrity: sha512-dgpoJ4WqNi2yTmizQHBJ5zcX6j2lE6icN/0yt4l1kkf16jrY/pwPLoTb1ETsWMz0OBLf9ZNvwmxft+cH+N9qSA==}
     engines: {node: '>=20'}
 
-  '@shikijs/types@4.1.0':
-    resolution: {integrity: sha512-3EQWX54fMpniOrDblzAhiwiJwpiTMW6+B9DWyUd9ska483tbayFYuw47UxwuPknI31bKnySfVQ/QW+jFL4rFdA==}
+  '@shikijs/types@4.3.1':
+    resolution: {integrity: sha512-CHFxE0jztBIZRHH6gxXE7DXUCFXjReEGxZ/j0rfSLGKZuwp2xBYycEP14875DSa9KLL/6700oxIq6oO6ef9K2g==}
     engines: {node: '>=20'}
 
   '@shikijs/vscode-textmate@10.0.2':
@@ -4206,13 +4203,6 @@ packages:
       vite: ^8.0.13
       vue: ^3.0.0
 
-  '@vitejs/plugin-vue@6.0.3':
-    resolution: {integrity: sha512-TlGPkLFLVOY3T7fZrwdvKpjprR3s4fxRln0ORDo1VQ7HHyxJwTlrjKU3kpVWTlaAjIEuCTokmjkZnr8Tpc925w==}
-    engines: {node: ^20.19.0 || >=22.12.0}
-    peerDependencies:
-      vite: ^8.0.13
-      vue: ^3.2.25
-
   '@vitejs/plugin-vue@6.0.7':
     resolution: {integrity: sha512-km+p+XdSz9Sxm5rqUbqcSfZYaAniKxWBj1KURl+Jr7UaPvvX7BmaWMdP69I5rrFDeQGyxAG7NXdc57vz+snhWg==}
     engines: {node: ^20.19.0 || >=22.12.0}
@@ -4369,11 +4359,6 @@ packages:
   '@vue/devtools-api@7.7.9':
     resolution: {integrity: sha512-kIE8wvwlcZ6TJTbNeU2HQNtaxLx3a84aotTITUuL/4bzfPxzajGBOoqjMhwZJ8L9qFYDU/lAYMEEm11dnZOD6g==}
 
-  '@vue/devtools-core@8.0.5':
-    resolution: {integrity: sha512-dpCw8nl0GDBuiL9SaY0mtDxoGIEmU38w+TQiYEPOLhW03VDC0lfNMYXS/qhl4I0YlysGp04NLY4UNn6xgD0VIQ==}
-    peerDependencies:
-      vue: ^3.0.0
-
   '@vue/devtools-core@8.1.2':
     resolution: {integrity: sha512-ZGGyaSBP4/+bN2Nd9ZHNYAVDRIzMw1rv2RyXWtyZlo6mQal+IDmTvKY4V+DjAEBhaXt30mHmsgYp1yXJ/2tIWg==}
     peerDependencies:
@@ -4382,18 +4367,12 @@ packages:
   '@vue/devtools-kit@7.7.9':
     resolution: {integrity: sha512-PyQ6odHSgiDVd4hnTP+aDk2X4gl2HmLDfiyEnn3/oV+ckFDuswRs4IbBT7vacMuGdwY/XemxBoh302ctbsptuA==}
 
-  '@vue/devtools-kit@8.0.5':
-    resolution: {integrity: sha512-q2VV6x1U3KJMTQPUlRMyWEKVbcHuxhqJdSr6Jtjz5uAThAIrfJ6WVZdGZm5cuO63ZnSUz0RCsVwiUUb0mDV0Yg==}
-
   '@vue/devtools-kit@8.1.2':
     resolution: {integrity: sha512-f75/upc+GCyjXErpgPGz4582ujS0L/adAltGy+tqXMGUJpgAcfGr6CxnnhpZY8BHuMYt6KpbF8uaFrrQG66rGQ==}
 
   '@vue/devtools-shared@7.7.9':
     resolution: {integrity: sha512-iWAb0v2WYf0QWmxCGy0seZNDPdO3Sp5+u78ORnyeonS6MT4PC7VPrryX2BpMJrwlDeaZ6BD4vP4XKjK0SZqaeA==}
 
-  '@vue/devtools-shared@8.0.5':
-    resolution: {integrity: sha512-bRLn6/spxpmgLk+iwOrR29KrYnJjG9DGpHGkDFG82UM21ZpJ39ztUT9OXX3g+usW7/b2z+h46I9ZiYyB07XMXg==}
-
   '@vue/devtools-shared@8.1.2':
     resolution: {integrity: sha512-X9RyVFYAdkBe4IUf5v48TxBF/6QPmF8CmWrDAjXzfUHrgQ/HGfTC1A6TqgXqZ03ye66l3AD51BAGD69IvKM9sw==}
 
@@ -6709,10 +6688,6 @@ packages:
   lru-cache@10.4.3:
     resolution: {integrity: sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ==}
 
-  lru-cache@11.2.6:
-    resolution: {integrity: sha512-ESL2CrkS/2wTPfuend7Zhkzo2u0daGJ/A2VucJOgQ/C48S/zB8MMeMHSGKYpXhIjbPxfuezITkaBH1wqv00DDQ==}
-    engines: {node: 20 || >=22}
-
   lru-cache@11.5.1:
     resolution: {integrity: sha512-RPimw/7aMdv2oqRrxKwvZXcPfwBrn/JZ2xYcY9Hus/6LaS3VOAKVWKWgNLCFSiOm1ESXinjsDlidVU7JlnCN2A==}
     engines: {node: 20 || >=22}
@@ -6746,9 +6721,6 @@ packages:
     resolution: {integrity: sha512-ISQTe55T2ao7XtlAStud6qwYPZjE4GK1S/BeVPus4jrq6JuOnQ00YKQC581RWhR122W7msZV263KzVeLoqidyQ==}
     engines: {node: '>=12'}
 
-  magicast@0.5.1:
-    resolution: {integrity: sha512-xrHS24IxaLrvuo613F719wvOIv9xPHFWQHuvGUBmPnCA/3MQxKI3b+r7n1jAoDHmsbC5bRhTZYR77invLAxVnw==}
-
   magicast@0.5.3:
     resolution: {integrity: sha512-pVKE4UdSQ7DvHzivsCIFx2BJn1mHG6KsyrFcaxFx6tONdneEuThrDx0Cj3AMg58KyN4pzYT+LHOotxDQDjNvkw==}
 
@@ -7072,11 +7044,6 @@ packages:
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
 
-  nanoid@5.1.5:
-    resolution: {integrity: sha512-Ir/+ZpE9fDsNH0hQ3C68uyThDXzYcim2EqcZ8zn8Chtt1iylPT9xXJB0kPCnqzgcEGikO9RxSrh63MsmVCU7Fw==}
-    engines: {node: ^18 || >=20}
-    hasBin: true
-
   napi-postinstall@0.3.3:
     resolution: {integrity: sha512-uTp172LLXSxuSYHv/kou+f6KW3SMppU9ivthaVTXian9sOt3XM/zHYHpRZiLgQoxeWfYUnslNWQHF1+G71xcow==}
     engines: {node: ^12.20.0 || ^14.18.0 || >=16.0.0}
@@ -7927,8 +7894,8 @@ packages:
     resolution: {integrity: sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==}
     engines: {node: '>=8'}
 
-  shiki@4.1.0:
-    resolution: {integrity: sha512-l/ABZPUR5v70jI10EzqfMS/I96vjSGv2y0ihUV+WYFzv0EfvW4s54m0Lg8wCrrL+2IkwBzFTuxkZjPf8b2NX9Q==}
+  shiki@4.3.1:
+    resolution: {integrity: sha512-oR+qDVi2OjX1tmDpyv+3KviX01KzO6Af+0NNnKnsp9491UEGz2YpxTuJboS/6VhYpTdqzmuJBuiTlrAWWJAssw==}
     engines: {node: '>=20'}
 
   side-channel-list@1.0.0:
@@ -8253,10 +8220,6 @@ packages:
     resolution: {integrity: sha512-op4nsTR47R6p0vMUUoYl/a+ljLFVtlfaXkLQmqfLR1qHma1h/ysYk4hEXZ880bf2CYgTskvTa/e196Vd5dDQXw==}
     engines: {node: '>=14.0.0'}
 
-  tinyrainbow@3.0.3:
-    resolution: {integrity: sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q==}
-    engines: {node: '>=14.0.0'}
-
   tinyrainbow@3.1.0:
     resolution: {integrity: sha512-Bf+ILmBgretUrdJxzXM0SgXLZ3XfiaUuOj/IKQHuTXip+05Xn+uyEYdVg0kYDipTBcLrCVyUzAPz7QmArb0mmw==}
     engines: {node: '>=14.0.0'}
@@ -8669,23 +8632,12 @@ packages:
       '@nuxt/kit':
         optional: true
 
-  vite-plugin-vue-devtools@8.0.5:
-    resolution: {integrity: sha512-p619BlKFOqQXJ6uDWS1vUPQzuJOD6xJTfftj57JXBGoBD/yeQCowR7pnWcr/FEX4/HVkFbreI6w2uuGBmQOh6A==}
-    engines: {node: '>=v14.21.3'}
-    peerDependencies:
-      vite: ^8.0.13
-
   vite-plugin-vue-devtools@8.1.2:
     resolution: {integrity: sha512-gt5h1CNryR9Hy0tvhSbqY3j0F7aj0pGxBxWLa1lXSiZVkhdWDf0vbCOZyjh8ivFGE6FDHTGy3zkcZGlMZdVHig==}
     engines: {node: '>=v14.21.3'}
     peerDependencies:
       vite: ^8.0.13
 
-  vite-plugin-vue-inspector@5.3.2:
-    resolution: {integrity: sha512-YvEKooQcSiBTAs0DoYLfefNja9bLgkFM7NI2b07bE2SruuvX0MEa9cMaxjKVMkeCp5Nz9FRIdcN1rOdFVBeL6Q==}
-    peerDependencies:
-      vite: ^8.0.13
-
   vite-plugin-vue-inspector@6.0.0:
     resolution: {integrity: sha512-OpyITJLgZNibxlrik1EmRtvXHDjLRxNPsWkGFTERZs2LgMEdG4W0WoFt5GIgp3a3jRou+eJR8U1zOBk/XQgEbw==}
     peerDependencies:
@@ -8890,11 +8842,8 @@ packages:
   vue-component-type-helpers@2.2.12:
     resolution: {integrity: sha512-YbGqHZ5/eW4SnkPNR44mKVc6ZKQoRs/Rux1sxC6rdwXb4qpbOSYfDr9DsTHolOTGmIKgM9j141mZbBeg05R1pw==}
 
-  vue-component-type-helpers@3.3.2:
-    resolution: {integrity: sha512-l4Z2Y34m7nFMlx8vrslJaVtXxUpzgDMSESC7TakG/c5kwjYT/do+E0NcT2/vWDzaoIhsShg/2OKwX7Q4nbzC0g==}
-
-  vue-component-type-helpers@3.3.6:
-    resolution: {integrity: sha512-FkljacAwJ9BUoSUdpFe3VDy0sGigNlTH9+2zcXUWmZOjN8swiCkl3t48wOJun0OsUd2cEIda1l04tsxMiKIIrQ==}
+  vue-component-type-helpers@3.3.7:
+    resolution: {integrity: sha512-Skkhw9agYSgsWqv7bxSOGJZa9SaiJbZVGdXuFWnrzKaQYHnw9qbjD630rw6RyMqDbp54nfLCLw5SZA55if7JLg==}
 
   vue-demi@0.14.10:
     resolution: {integrity: sha512-nMZBOwuzabUO0nLgIcc6rycZEebF6eeUfaiQx9+WSk8e29IbLvPU9feI6tqW4kTo3hvoYAJkMh8n8D0fuISphg==}
@@ -9340,7 +9289,7 @@ snapshots:
       '@csstools/css-color-parser': 3.1.0(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-parser-algorithms': 3.0.5(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-tokenizer': 3.0.4
-      lru-cache: 11.2.6
+      lru-cache: 11.5.1
 
   '@asamuzakjp/dom-selector@6.7.6':
     dependencies:
@@ -9348,7 +9297,7 @@ snapshots:
       bidi-js: 1.0.3
       css-tree: 3.1.0
       is-potential-custom-element-name: 1.0.1
-      lru-cache: 11.2.6
+      lru-cache: 11.5.1
 
   '@asamuzakjp/nwsapi@2.3.9': {}
 
@@ -9374,7 +9323,7 @@ snapshots:
       js-yaml: 4.1.1
       picomatch: 4.0.4
       retext-smartypants: 6.2.0
-      shiki: 4.1.0
+      shiki: 4.3.1
       smol-toml: 1.6.1
       unified: 11.0.5
 
@@ -11362,8 +11311,6 @@ snapshots:
   '@rolldown/binding-win32-x64-msvc@1.0.1':
     optional: true
 
-  '@rolldown/pluginutils@1.0.0-beta.53': {}
-
   '@rolldown/pluginutils@1.0.1': {}
 
   '@rollup/pluginutils@4.2.1':
@@ -11537,40 +11484,40 @@ snapshots:
     optionalDependencies:
       pinia: 3.0.4(typescript@5.9.3)(vue@3.5.34(typescript@5.9.3))
 
-  '@shikijs/core@4.1.0':
+  '@shikijs/core@4.3.1':
     dependencies:
-      '@shikijs/primitive': 4.1.0
-      '@shikijs/types': 4.1.0
+      '@shikijs/primitive': 4.3.1
+      '@shikijs/types': 4.3.1
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
       hast-util-to-html: 9.0.5
 
-  '@shikijs/engine-javascript@4.1.0':
+  '@shikijs/engine-javascript@4.3.1':
     dependencies:
-      '@shikijs/types': 4.1.0
+      '@shikijs/types': 4.3.1
       '@shikijs/vscode-textmate': 10.0.2
       oniguruma-to-es: 4.3.6
 
-  '@shikijs/engine-oniguruma@4.1.0':
+  '@shikijs/engine-oniguruma@4.3.1':
     dependencies:
-      '@shikijs/types': 4.1.0
+      '@shikijs/types': 4.3.1
       '@shikijs/vscode-textmate': 10.0.2
 
-  '@shikijs/langs@4.1.0':
+  '@shikijs/langs@4.3.1':
     dependencies:
-      '@shikijs/types': 4.1.0
+      '@shikijs/types': 4.3.1
 
-  '@shikijs/primitive@4.1.0':
+  '@shikijs/primitive@4.3.1':
     dependencies:
-      '@shikijs/types': 4.1.0
+      '@shikijs/types': 4.3.1
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
 
-  '@shikijs/themes@4.1.0':
+  '@shikijs/themes@4.3.1':
     dependencies:
-      '@shikijs/types': 4.1.0
+      '@shikijs/types': 4.3.1
 
-  '@shikijs/types@4.1.0':
+  '@shikijs/types@4.3.1':
     dependencies:
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
@@ -11677,7 +11624,7 @@ snapshots:
       storybook: 10.2.10(@testing-library/dom@10.4.1)(prettier@3.7.4)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
       type-fest: 2.19.0
       vue: 3.5.34(typescript@5.9.3)
-      vue-component-type-helpers: 3.3.6
+      vue-component-type-helpers: 3.3.7
 
   '@swc/helpers@0.5.21':
     dependencies:
@@ -12303,18 +12250,12 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@vitejs/plugin-vue@6.0.3(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
+  '@vitejs/plugin-vue@6.0.7(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
     dependencies:
-      '@rolldown/pluginutils': 1.0.0-beta.53
+      '@rolldown/pluginutils': 1.0.1
       vite: 8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)
       vue: 3.5.34(typescript@5.9.3)
 
-  '@vitejs/plugin-vue@6.0.3(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
-    dependencies:
-      '@rolldown/pluginutils': 1.0.0-beta.53
-      vite: 8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)
-      vue: 3.5.34(typescript@5.9.3)
-
   '@vitejs/plugin-vue@6.0.7(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
     dependencies:
       '@rolldown/pluginutils': 1.0.1
@@ -12330,10 +12271,10 @@ snapshots:
       istanbul-lib-report: 3.0.1
       istanbul-lib-source-maps: 5.0.6
       istanbul-reports: 3.2.0
-      magicast: 0.5.1
+      magicast: 0.5.3
       obug: 2.1.1
       std-env: 3.10.0
-      tinyrainbow: 3.0.3
+      tinyrainbow: 3.1.0
       vitest: 4.1.8(@opentelemetry/api@1.9.0)(@types/node@24.10.4)(@vitest/coverage-v8@4.0.16)(@vitest/ui@4.0.16)(happy-dom@20.9.0)(jsdom@27.4.0)(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
     transitivePeerDependencies:
       - supports-color
@@ -12377,7 +12318,7 @@ snapshots:
 
   '@vitest/pretty-format@4.0.16':
     dependencies:
-      tinyrainbow: 3.0.3
+      tinyrainbow: 3.1.0
 
   '@vitest/pretty-format@4.1.8':
     dependencies:
@@ -12409,7 +12350,7 @@ snapshots:
       pathe: 2.0.3
       sirv: 3.0.2
       tinyglobby: 0.2.16
-      tinyrainbow: 3.0.3
+      tinyrainbow: 3.1.0
       vitest: 4.1.8(@opentelemetry/api@1.9.0)(@types/node@24.10.4)(@vitest/coverage-v8@4.0.16)(@vitest/ui@4.0.16)(happy-dom@20.9.0)(jsdom@27.4.0)(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
 
   '@vitest/utils@3.2.4':
@@ -12421,7 +12362,7 @@ snapshots:
   '@vitest/utils@4.0.16':
     dependencies:
       '@vitest/pretty-format': 4.0.16
-      tinyrainbow: 3.0.3
+      tinyrainbow: 3.1.0
 
   '@vitest/utils@4.1.8':
     dependencies:
@@ -12590,30 +12531,6 @@ snapshots:
     dependencies:
       '@vue/devtools-kit': 7.7.9
 
-  '@vue/devtools-core@8.0.5(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
-    dependencies:
-      '@vue/devtools-kit': 8.0.5
-      '@vue/devtools-shared': 8.0.5
-      mitt: 3.0.1
-      nanoid: 5.1.5
-      pathe: 2.0.3
-      vite-hot-client: 2.1.0(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
-      vue: 3.5.34(typescript@5.9.3)
-    transitivePeerDependencies:
-      - vite
-
-  '@vue/devtools-core@8.0.5(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))':
-    dependencies:
-      '@vue/devtools-kit': 8.0.5
-      '@vue/devtools-shared': 8.0.5
-      mitt: 3.0.1
-      nanoid: 5.1.5
-      pathe: 2.0.3
-      vite-hot-client: 2.1.0(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
-      vue: 3.5.34(typescript@5.9.3)
-    transitivePeerDependencies:
-      - vite
-
   '@vue/devtools-core@8.1.2(vue@3.5.34(typescript@5.9.3))':
     dependencies:
       '@vue/devtools-kit': 8.1.2
@@ -12630,16 +12547,6 @@ snapshots:
       speakingurl: 14.0.1
       superjson: 2.2.2
 
-  '@vue/devtools-kit@8.0.5':
-    dependencies:
-      '@vue/devtools-shared': 8.0.5
-      birpc: 2.9.0
-      hookable: 5.5.3
-      mitt: 3.0.1
-      perfect-debounce: 2.0.0
-      speakingurl: 14.0.1
-      superjson: 2.2.2
-
   '@vue/devtools-kit@8.1.2':
     dependencies:
       '@vue/devtools-shared': 8.1.2
@@ -12651,10 +12558,6 @@ snapshots:
     dependencies:
       rfdc: 1.4.1
 
-  '@vue/devtools-shared@8.0.5':
-    dependencies:
-      rfdc: 1.4.1
-
   '@vue/devtools-shared@8.1.2': {}
 
   '@vue/language-core@2.2.0(typescript@5.9.3)':
@@ -12988,7 +12891,7 @@ snapshots:
       picomatch: 4.0.4
       rehype: 13.0.2
       semver: 7.7.4
-      shiki: 4.1.0
+      shiki: 4.3.1
       smol-toml: 1.6.1
       svgo: 4.0.1
       tinyclip: 0.1.13
@@ -15229,8 +15132,6 @@ snapshots:
 
   lru-cache@10.4.3: {}
 
-  lru-cache@11.2.6: {}
-
   lru-cache@11.5.1: {}
 
   lru-cache@5.1.1:
@@ -15259,12 +15160,6 @@ snapshots:
     dependencies:
       '@jridgewell/sourcemap-codec': 1.5.5
 
-  magicast@0.5.1:
-    dependencies:
-      '@babel/parser': 7.29.3
-      '@babel/types': 7.29.0
-      source-map-js: 1.2.1
-
   magicast@0.5.3:
     dependencies:
       '@babel/parser': 7.29.3
@@ -15873,8 +15768,6 @@ snapshots:
 
   nanoid@3.3.12: {}
 
-  nanoid@5.1.5: {}
-
   napi-postinstall@0.3.3: {}
 
   natural-compare@1.4.0: {}
@@ -16227,7 +16120,7 @@ snapshots:
 
   path-scurry@2.0.2:
     dependencies:
-      lru-cache: 11.2.6
+      lru-cache: 11.5.1
       minipass: 7.1.3
 
   path-type@4.0.0: {}
@@ -17007,14 +16900,14 @@ snapshots:
 
   shebang-regex@3.0.0: {}
 
-  shiki@4.1.0:
+  shiki@4.3.1:
     dependencies:
-      '@shikijs/core': 4.1.0
-      '@shikijs/engine-javascript': 4.1.0
-      '@shikijs/engine-oniguruma': 4.1.0
-      '@shikijs/langs': 4.1.0
-      '@shikijs/themes': 4.1.0
-      '@shikijs/types': 4.1.0
+      '@shikijs/core': 4.3.1
+      '@shikijs/engine-javascript': 4.3.1
+      '@shikijs/engine-oniguruma': 4.3.1
+      '@shikijs/langs': 4.3.1
+      '@shikijs/themes': 4.3.1
+      '@shikijs/types': 4.3.1
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
 
@@ -17380,8 +17273,6 @@ snapshots:
 
   tinyrainbow@2.0.0: {}
 
-  tinyrainbow@3.0.3: {}
-
   tinyrainbow@3.1.0: {}
 
   tinyspy@4.0.4: {}
@@ -17850,29 +17741,15 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  vite-plugin-vue-devtools@8.0.5(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3)):
+  vite-plugin-vue-devtools@8.1.2(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3)):
     dependencies:
-      '@vue/devtools-core': 8.0.5(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
-      '@vue/devtools-kit': 8.0.5
-      '@vue/devtools-shared': 8.0.5
+      '@vue/devtools-core': 8.1.2(vue@3.5.34(typescript@5.9.3))
+      '@vue/devtools-kit': 8.1.2
+      '@vue/devtools-shared': 8.1.2
       sirv: 3.0.2
       vite: 8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)
       vite-plugin-inspect: 11.3.3(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
-      vite-plugin-vue-inspector: 5.3.2(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
-    transitivePeerDependencies:
-      - '@nuxt/kit'
-      - supports-color
-      - vue
-
-  vite-plugin-vue-devtools@8.0.5(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3)):
-    dependencies:
-      '@vue/devtools-core': 8.0.5(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))(vue@3.5.34(typescript@5.9.3))
-      '@vue/devtools-kit': 8.0.5
-      '@vue/devtools-shared': 8.0.5
-      sirv: 3.0.2
-      vite: 8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)
-      vite-plugin-inspect: 11.3.3(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
-      vite-plugin-vue-inspector: 5.3.2(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
+      vite-plugin-vue-inspector: 6.0.0(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0))
     transitivePeerDependencies:
       - '@nuxt/kit'
       - supports-color
@@ -17892,7 +17769,7 @@ snapshots:
       - supports-color
       - vue
 
-  vite-plugin-vue-inspector@5.3.2(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)):
+  vite-plugin-vue-inspector@6.0.0(vite@8.0.13(@types/node@24.10.4)(esbuild@0.27.3)(jiti@2.6.1)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)):
     dependencies:
       '@babel/core': 7.29.0
       '@babel/plugin-proposal-decorators': 7.29.0(@babel/core@7.29.0)
@@ -17907,21 +17784,6 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  vite-plugin-vue-inspector@5.3.2(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)):
-    dependencies:
-      '@babel/core': 7.29.0
-      '@babel/plugin-proposal-decorators': 7.29.0(@babel/core@7.29.0)
-      '@babel/plugin-syntax-import-attributes': 7.28.6(@babel/core@7.29.0)
-      '@babel/plugin-syntax-import-meta': 7.10.4(@babel/core@7.29.0)
-      '@babel/plugin-transform-typescript': 7.28.6(@babel/core@7.29.0)
-      '@vue/babel-plugin-jsx': 1.4.0(@babel/core@7.29.0)
-      '@vue/compiler-dom': 3.5.34
-      kolorist: 1.8.0
-      magic-string: 0.30.21
-      vite: 8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)
-    transitivePeerDependencies:
-      - supports-color
-
   vite-plugin-vue-inspector@6.0.0(vite@8.0.13(@types/node@25.0.3)(esbuild@0.27.3)(jiti@2.7.0)(terser@5.39.2)(tsx@4.19.4)(yaml@2.9.0)):
     dependencies:
       '@babel/core': 7.29.0
@@ -18147,9 +18009,7 @@ snapshots:
 
   vue-component-type-helpers@2.2.12: {}
 
-  vue-component-type-helpers@3.3.2: {}
-
-  vue-component-type-helpers@3.3.6: {}
+  vue-component-type-helpers@3.3.7: {}
 
   vue-demi@0.14.10(vue@3.5.34(typescript@5.9.3)):
     dependencies:

src/assets/css/style.css

@@ -1,4 +1,5 @@
 @import '@comfyorg/design-system/css/style.css';
+@import '../../workbench/extensions/agent/agentTheme.css';
 
 /* Use 0.001ms instead of 0s so transitionend/animationend events still fire
    and JS listeners aren't broken. */

src/components/LiteGraphCanvasSplitterOverlay.vue

@@ -1,133 +1,154 @@
 <template>
   <div
-    class="pointer-events-none absolute top-0 left-0 z-999 flex size-full flex-col"
+    class="pointer-events-none absolute top-0 left-0 z-999 flex size-full flex-row"
   >
-    <slot name="workflow-tabs" />
+    <div
+      class="pointer-events-none flex min-w-0 flex-1 flex-col overflow-hidden"
+    >
+      <slot name="workflow-tabs" />
+
+      <div
+        class="pointer-events-none flex flex-1 overflow-hidden"
+        :class="{
+          'flex-row': sidebarLocation === 'left',
+          'flex-row-reverse': sidebarLocation === 'right'
+        }"
+      >
+        <div class="side-toolbar-container">
+          <slot name="side-toolbar" />
+        </div>
+
+        <Splitter
+          :key="splitterRefreshKey"
+          class="pointer-events-none flex-1 overflow-hidden border-none bg-transparent"
+          :state-key="
+            isSelectMode
+              ? sidebarLocation === 'left'
+                ? 'builder-splitter'
+                : 'builder-splitter-right'
+              : sidebarStateKey
+          "
+          state-storage="local"
+          @resizestart="onResizestart"
+          @resizeend="normalizeSavedSizes"
+        >
+          <!-- First panel: sidebar when left, properties when right -->
+          <SplitterPanel
+            v-if="firstPanelVisible"
+            :class="
+              sidebarLocation === 'left'
+                ? cn(
+                    'side-bar-panel pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden',
+                    sidebarPanelVisible && 'min-w-78'
+                  )
+                : 'pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden'
+            "
+            :min-size="
+              sidebarLocation === 'left' ? SIDEBAR_MIN_SIZE : BUILDER_MIN_SIZE
+            "
+            :size="SIDE_PANEL_SIZE"
+            :style="firstPanelStyle"
+            :role="sidebarLocation === 'left' ? 'complementary' : undefined"
+            :aria-label="
+              sidebarLocation === 'left' ? t('sideToolbar.sidebar') : undefined
+            "
+          >
+            <slot
+              v-if="sidebarLocation === 'left' && sidebarPanelVisible"
+              name="side-bar-panel"
+            />
+            <slot
+              v-else-if="sidebarLocation === 'right'"
+              name="right-side-panel"
+            />
+          </SplitterPanel>
+
+          <!-- Main panel (always present) -->
+          <SplitterPanel :size="centerPanelDefaultSize" class="flex flex-col">
+            <slot name="topmenu" :sidebar-panel-visible />
+
+            <Splitter
+              class="splitter-overlay-bottom pointer-events-none mx-1 mb-1 flex-1 border-none bg-transparent"
+              layout="vertical"
+              :pt:gutter="
+                cn(
+                  'rounded-t-lg',
+                  !(bottomPanelVisible && !focusMode) && 'hidden'
+                )
+              "
+              state-key="bottom-panel-splitter"
+              state-storage="local"
+              @resizestart="onResizestart"
+            >
+              <SplitterPanel
+                class="graph-canvas-panel relative overflow-visible"
+              >
+                <slot name="graph-canvas-panel" />
+              </SplitterPanel>
+              <SplitterPanel
+                v-show="bottomPanelVisible && !focusMode"
+                class="bottom-panel pointer-events-auto max-w-full overflow-x-auto rounded-lg border border-(--p-panel-border-color) bg-comfy-menu-bg focus-visible:outline-hidden"
+              >
+                <slot name="bottom-panel" />
+              </SplitterPanel>
+            </Splitter>
+          </SplitterPanel>
+
+          <!-- Last panel: properties when left, sidebar when right -->
+          <SplitterPanel
+            v-if="lastPanelVisible"
+            :class="
+              sidebarLocation === 'right'
+                ? cn(
+                    'side-bar-panel pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden',
+                    sidebarPanelVisible && 'min-w-78'
+                  )
+                : 'pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden'
+            "
+            :min-size="
+              sidebarLocation === 'right' ? SIDEBAR_MIN_SIZE : BUILDER_MIN_SIZE
+            "
+            :size="SIDE_PANEL_SIZE"
+            :style="lastPanelStyle"
+            :role="sidebarLocation === 'right' ? 'complementary' : undefined"
+            :aria-label="
+              sidebarLocation === 'right' ? t('sideToolbar.sidebar') : undefined
+            "
+          >
+            <slot v-if="sidebarLocation === 'left'" name="right-side-panel" />
+            <slot
+              v-else-if="sidebarLocation === 'right' && sidebarPanelVisible"
+              name="side-bar-panel"
+            />
+          </SplitterPanel>
+        </Splitter>
+      </div>
+    </div>
 
     <div
-      class="pointer-events-none flex flex-1 overflow-hidden"
-      :class="{
-        'flex-row': sidebarLocation === 'left',
-        'flex-row-reverse': sidebarLocation === 'right'
-      }"
+      v-if="agentPanelDocked"
+      class="pointer-events-auto relative h-full shrink-0 overflow-hidden"
+      :style="{ width: `${agentPanelWidth}px` }"
     >
-      <div class="side-toolbar-container">
-        <slot name="side-toolbar" />
-      </div>
-
-      <Splitter
-        :key="splitterRefreshKey"
-        class="pointer-events-none flex-1 overflow-hidden border-none bg-transparent"
-        :state-key="
-          isSelectMode
-            ? sidebarLocation === 'left'
-              ? 'builder-splitter'
-              : 'builder-splitter-right'
-            : sidebarStateKey
-        "
-        state-storage="local"
-        @resizestart="onResizestart"
-        @resizeend="normalizeSavedSizes"
-      >
-        <!-- First panel: sidebar when left, properties when right -->
-        <SplitterPanel
-          v-if="firstPanelVisible"
-          :class="
-            sidebarLocation === 'left'
-              ? cn(
-                  'side-bar-panel pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden',
-                  sidebarPanelVisible && 'min-w-78'
-                )
-              : 'pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden'
-          "
-          :min-size="
-            sidebarLocation === 'left' ? SIDEBAR_MIN_SIZE : BUILDER_MIN_SIZE
-          "
-          :size="SIDE_PANEL_SIZE"
-          :style="firstPanelStyle"
-          :role="sidebarLocation === 'left' ? 'complementary' : undefined"
-          :aria-label="
-            sidebarLocation === 'left' ? t('sideToolbar.sidebar') : undefined
-          "
-        >
-          <slot
-            v-if="sidebarLocation === 'left' && sidebarPanelVisible"
-            name="side-bar-panel"
-          />
-          <slot
-            v-else-if="sidebarLocation === 'right'"
-            name="right-side-panel"
-          />
-        </SplitterPanel>
-
-        <!-- Main panel (always present) -->
-        <SplitterPanel :size="centerPanelDefaultSize" class="flex flex-col">
-          <slot name="topmenu" :sidebar-panel-visible />
-
-          <Splitter
-            class="splitter-overlay-bottom pointer-events-none mx-1 mb-1 flex-1 border-none bg-transparent"
-            layout="vertical"
-            :pt:gutter="
-              cn(
-                'rounded-t-lg',
-                !(bottomPanelVisible && !focusMode) && 'hidden'
-              )
-            "
-            state-key="bottom-panel-splitter"
-            state-storage="local"
-            @resizestart="onResizestart"
-          >
-            <SplitterPanel class="graph-canvas-panel relative overflow-visible">
-              <slot name="graph-canvas-panel" />
-            </SplitterPanel>
-            <SplitterPanel
-              v-show="bottomPanelVisible && !focusMode"
-              class="bottom-panel pointer-events-auto max-w-full overflow-x-auto rounded-lg border border-(--p-panel-border-color) bg-comfy-menu-bg focus-visible:outline-hidden"
-            >
-              <slot name="bottom-panel" />
-            </SplitterPanel>
-          </Splitter>
-        </SplitterPanel>
-
-        <!-- Last panel: properties when left, sidebar when right -->
-        <SplitterPanel
-          v-if="lastPanelVisible"
-          :class="
-            sidebarLocation === 'right'
-              ? cn(
-                  'side-bar-panel pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden',
-                  sidebarPanelVisible && 'min-w-78'
-                )
-              : 'pointer-events-auto bg-comfy-menu-bg focus-visible:outline-hidden'
-          "
-          :min-size="
-            sidebarLocation === 'right' ? SIDEBAR_MIN_SIZE : BUILDER_MIN_SIZE
-          "
-          :size="SIDE_PANEL_SIZE"
-          :style="lastPanelStyle"
-          :role="sidebarLocation === 'right' ? 'complementary' : undefined"
-          :aria-label="
-            sidebarLocation === 'right' ? t('sideToolbar.sidebar') : undefined
-          "
-        >
-          <slot v-if="sidebarLocation === 'left'" name="right-side-panel" />
-          <slot
-            v-else-if="sidebarLocation === 'right' && sidebarPanelVisible"
-            name="side-bar-panel"
-          />
-        </SplitterPanel>
-      </Splitter>
+      <div
+        class="agent-resize-handle absolute top-0 left-0 z-10 h-full w-[5px] cursor-col-resize"
+        :data-resizing="isAgentResizing"
+        @pointerdown="onAgentResizeStart"
+        @lostpointercapture="isAgentResizing = false"
+      />
+      <slot name="agent-panel" />
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
 import { cn } from '@comfyorg/tailwind-utils'
+import { useEventListener } from '@vueuse/core'
 import { storeToRefs } from 'pinia'
 import Splitter from 'primevue/splitter'
 import type { SplitterResizeStartEvent } from 'primevue/splitter'
 import SplitterPanel from 'primevue/splitterpanel'
-import { computed } from 'vue'
+import { computed, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 
 import { useAppMode } from '@/composables/useAppMode'
@@ -142,11 +163,13 @@ import { useBottomPanelStore } from '@/stores/workspace/bottomPanelStore'
 import { useRightSidePanelStore } from '@/stores/workspace/rightSidePanelStore'
 import { useSidebarTabStore } from '@/stores/workspace/sidebarTabStore'
 import { useWorkspaceStore } from '@/stores/workspaceStore'
+import { useAgentPanelStore } from '@/workbench/extensions/agent/stores/agent/agentPanelStore'
 
 const workspaceStore = useWorkspaceStore()
 const settingStore = useSettingStore()
 const rightSidePanelStore = useRightSidePanelStore()
 const sidebarTabStore = useSidebarTabStore()
+const agentPanelStore = useAgentPanelStore()
 const { t } = useI18n()
 const sidebarLocation = computed<'left' | 'right'>(() =>
   settingStore.get('Comfy.Sidebar.Location')
@@ -162,6 +185,33 @@ const { isSelectMode, isBuilderMode } = useAppMode()
 const { activeSidebarTabId, activeSidebarTab } = storeToRefs(sidebarTabStore)
 const { bottomPanelVisible } = storeToRefs(useBottomPanelStore())
 const { isOpen: rightSidePanelVisible } = storeToRefs(rightSidePanelStore)
+const {
+  isOpen: agentPanelOpen,
+  enabled: agentPanelEnabled,
+  width: agentPanelWidth
+} = storeToRefs(agentPanelStore)
+const agentPanelDocked = computed(
+  () => agentPanelEnabled.value && agentPanelOpen.value
+)
+const isAgentResizing = ref(false)
+let agentResizeStartX = 0
+let agentResizeStartWidth = 0
+
+function onAgentResizeStart(e: PointerEvent): void {
+  isAgentResizing.value = true
+  agentResizeStartX = e.clientX
+  agentResizeStartWidth = agentPanelStore.width
+  ;(e.currentTarget as HTMLElement).setPointerCapture(e.pointerId)
+  e.preventDefault()
+}
+
+useEventListener(document, 'pointermove', (e: PointerEvent) => {
+  if (!isAgentResizing.value) return
+  agentPanelStore.setWidth(
+    agentResizeStartWidth + (agentResizeStartX - e.clientX)
+  )
+})
+
 const showOffsideSplitter = computed(
   () => rightSidePanelVisible.value || isSelectMode.value
 )
@@ -304,4 +354,10 @@ const lastPanelStyle = computed(() => {
 .splitter-overlay-bottom :deep(.p-splitter-gutter) {
   transform: translateY(5px);
 }
+
+.agent-resize-handle:hover,
+.agent-resize-handle[data-resizing='true'] {
+  transition: background-color 0.2s ease 300ms;
+  background-color: var(--p-primary-color);
+}
 </style>

src/components/graph/GraphCanvas.vue

@@ -38,6 +38,15 @@
       <AppBuilder v-if="isBuilderMode" />
       <NodePropertiesPanel v-else />
     </template>
+    <template #agent-panel>
+      <div class="size-full p-2">
+        <div
+          class="size-full overflow-hidden rounded-lg border border-(--interface-stroke)"
+        >
+          <AgentPanelRoot />
+        </div>
+      </div>
+    </template>
     <template #graph-canvas-panel>
       <GraphCanvasMenu
         v-if="canvasMenuEnabled && !isBuilderMode"
@@ -111,6 +120,7 @@
 import { until, useEventListener } from '@vueuse/core'
 import {
   computed,
+  defineAsyncComponent,
   nextTick,
   onMounted,
   onUnmounted,
@@ -197,6 +207,10 @@ import { forEachNode } from '@/utils/graphTraversalUtil'
 import SelectionRectangle from './SelectionRectangle.vue'
 import { useUrlActionLoaders } from '@/composables/useUrlActionLoaders'
 
+const AgentPanelRoot = defineAsyncComponent(
+  () => import('@/workbench/extensions/agent/AgentPanelRoot.vue')
+)
+
 const { t } = useI18n()
 const emit = defineEmits<{
   ready: []

src/components/rightSidePanel/errors/TabErrors.test.ts

@@ -150,6 +150,22 @@ describe('TabErrors.vue', () => {
     expect(screen.queryByText('Error details')).not.toBeInTheDocument()
   })
 
+  it('passes raw details through to the card for agent prompt errors only', () => {
+    renderComponent({
+      executionError: {
+        lastPromptError: {
+          type: 'agent_api_failed',
+          message: 'Comfy Agent hit a server error.',
+          details: 'HTTP 500 from /api/agent/threads'
+        }
+      }
+    })
+
+    expect(
+      screen.getByText('HTTP 500 from /api/agent/threads')
+    ).toBeInTheDocument()
+  })
+
   it('renders node validation errors grouped by catalog copy', async () => {
     const { getNodeByExecutionId } = await import('@/utils/graphTraversalUtil')
     vi.mocked(getNodeByExecutionId).mockImplementation((_, nodeId) => {

src/components/rightSidePanel/errors/useErrorGroups.test.ts

@@ -63,6 +63,10 @@ vi.mock('@/i18n', () => {
       'Prompt has no outputs',
     'errorCatalog.promptErrors.prompt_no_outputs.desc':
       'The workflow does not contain any output nodes (e.g. Save Image, Preview Image) to produce a result.',
+    'errorCatalog.promptErrors.agent_draft_apply_failed.title':
+      'An error was found',
+    'errorCatalog.promptErrors.agent_draft_apply_failed.desc':
+      "Couldn't apply the agent's draft to the canvas.",
     'errorCatalog.runtimeErrors.execution_failed.title': 'Execution failed',
     'errorCatalog.runtimeErrors.execution_failed.message':
       'Node threw an error during execution.',
@@ -629,6 +633,25 @@ describe('useErrorGroups', () => {
       expect(promptGroup).toBeDefined()
     })
 
+    it('carries prompt error details onto the card item', async () => {
+      const { store, groups } = createErrorGroups()
+      store.lastPromptError = {
+        type: 'agent_draft_apply_failed',
+        message: "Couldn't apply the agent's draft to the canvas",
+        details: 'Validation error: Required at "version"'
+      }
+      await nextTick()
+
+      const promptGroup = groups.allErrorGroups.value.find(
+        (g) => g.type === 'execution' && g.displayTitle === 'An error was found'
+      )
+      const details =
+        promptGroup && 'cards' in promptGroup
+          ? promptGroup.cards[0]?.errors[0]?.details
+          : undefined
+      expect(details).toBe('Validation error: Required at "version"')
+    })
+
     it('includes prompt error when a node is selected', async () => {
       const { store, groups } = createErrorGroups()
       const canvasStore = useCanvasStore()

src/components/rightSidePanel/errors/useErrorGroups.ts

@@ -46,6 +46,11 @@ import {
 
 const PROMPT_CARD_ID = '__prompt__'
 
+const AGENT_PROMPT_ERROR_TYPES = new Set([
+  'agent_api_failed',
+  'agent_draft_apply_failed'
+])
+
 /** Sentinel: distinguishes "fetch in-flight" from "fetch done, pack not found (null)". */
 const RESOLVING = '__RESOLVING__'
 
@@ -372,6 +377,9 @@ export function useErrorGroups(searchQuery: MaybeRefOrGetter<string>) {
       errors: [
         {
           message: error.message,
+          ...(AGENT_PROMPT_ERROR_TYPES.has(error.type)
+            ? { details: error.details }
+            : {}),
           ...resolvedDisplay
         }
       ]

src/components/topbar/WorkflowTabs.test.ts

@@ -79,6 +79,34 @@ vi.mock('@/stores/workspaceStore', () => ({
   useWorkspaceStore: () => ({ shiftDown: false })
 }))
 
+const agentPanelHolder = vi.hoisted(() => ({
+  store: null as unknown as {
+    isOpen: { value: boolean }
+    enabled: { value: boolean }
+    toggle: ReturnType<typeof vi.fn>
+  }
+}))
+vi.mock(
+  '@/workbench/extensions/agent/stores/agent/agentPanelStore',
+  async () => {
+    const { ref } = await import('vue')
+    agentPanelHolder.store = {
+      isOpen: ref(false),
+      enabled: ref(false),
+      toggle: vi.fn(() => {
+        agentPanelHolder.store.isOpen.value =
+          !agentPanelHolder.store.isOpen.value
+      })
+    }
+    return { useAgentPanelStore: () => agentPanelHolder.store }
+  }
+)
+
+const trackAgentEntryButtonClicked = vi.hoisted(() => vi.fn())
+vi.mock('@/platform/telemetry', () => ({
+  useTelemetry: () => ({ trackAgentEntryButtonClicked })
+}))
+
 vi.mock('@/utils/mouseDownUtil', () => ({
   whileMouseDown: vi.fn()
 }))
@@ -131,6 +159,42 @@ function renderComponent() {
   return { user, ...result }
 }
 
+describe('WorkflowTabs agent entry button', () => {
+  beforeEach(() => {
+    tabBarLayout.value = 'Integrated'
+    agentPanelHolder.store.enabled.value = true
+    agentPanelHolder.store.isOpen.value = false
+    trackAgentEntryButtonClicked.mockClear()
+    agentPanelHolder.store.toggle.mockClear()
+  })
+
+  afterEach(() => {
+    tabBarLayout.value = 'Legacy'
+    agentPanelHolder.store.enabled.value = false
+    agentPanelHolder.store.isOpen.value = false
+  })
+
+  it('reports the entry click with the state the click produces', async () => {
+    const { user } = renderComponent()
+
+    await user.click(
+      screen.getByRole('button', { name: enMessages.agent.askComfyAgent })
+    )
+    expect(trackAgentEntryButtonClicked).toHaveBeenCalledWith({
+      resulting_state: 'opened'
+    })
+    expect(agentPanelHolder.store.toggle).toHaveBeenCalledTimes(1)
+
+    agentPanelHolder.store.isOpen.value = true
+    await user.click(
+      screen.getByRole('button', { name: enMessages.agent.askComfyAgent })
+    )
+    expect(trackAgentEntryButtonClicked).toHaveBeenLastCalledWith({
+      resulting_state: 'closed'
+    })
+  })
+})
+
 describe('WorkflowTabs feedback button', () => {
   let openSpy: ReturnType<typeof vi.spyOn>
 

src/components/topbar/WorkflowTabs.vue

@@ -84,6 +84,24 @@
       data-testid="integrated-tab-bar-actions"
       class="ml-auto flex shrink-0 items-center gap-2 px-2"
     >
+      <Button
+        v-if="agentPanelEnabled"
+        variant="link"
+        size="sm"
+        :class="
+          cn(
+            'no-drag shrink-0 border border-solid text-base-foreground',
+            isAgentPanelOpen
+              ? 'border-plum-500 bg-plum-600/20'
+              : 'border-plum-600 bg-ink-700 hover:border-plum-500'
+          )
+        "
+        :aria-label="$t('agent.askComfyAgent')"
+        @click="onAgentEntryClick"
+      >
+        <i class="icon-[comfy--comfy-c] size-3 text-brand-yellow" />
+        <span>{{ $t('agent.askComfyAgent') }}</span>
+      </Button>
       <Button
         v-if="isCloud || isNightly"
         v-tooltip="{ value: $t('actionbar.feedbackTooltip'), showDelay: 300 }"
@@ -106,7 +124,9 @@
 </template>
 
 <script setup lang="ts">
+import { cn } from '@comfyorg/tailwind-utils'
 import { useScroll } from '@vueuse/core'
+import { storeToRefs } from 'pinia'
 import ScrollPanel from 'primevue/scrollpanel'
 import SelectButton from 'primevue/selectbutton'
 import { computed, nextTick, onUpdated, ref, watch } from 'vue'
@@ -126,6 +146,8 @@ import type { ComfyWorkflow } from '@/platform/workflow/management/stores/workfl
 import { useWorkflowStore } from '@/platform/workflow/management/stores/workflowStore'
 import { useCommandStore } from '@/stores/commandStore'
 import { useWorkspaceStore } from '@/stores/workspaceStore'
+import { useTelemetry } from '@/platform/telemetry'
+import { useAgentPanelStore } from '@/workbench/extensions/agent/stores/agent/agentPanelStore'
 import { isCloud, isDesktop, isNightly } from '@/platform/distribution/types'
 import { whileMouseDown } from '@/utils/mouseDownUtil'
 
@@ -145,6 +167,16 @@ const workspaceStore = useWorkspaceStore()
 const workflowStore = useWorkflowStore()
 const workflowService = useWorkflowService()
 const commandStore = useCommandStore()
+const agentPanelStore = useAgentPanelStore()
+const { isOpen: isAgentPanelOpen, enabled: agentPanelEnabled } =
+  storeToRefs(agentPanelStore)
+
+function onAgentEntryClick(): void {
+  useTelemetry()?.trackAgentEntryButtonClicked({
+    resulting_state: isAgentPanelOpen.value ? 'closed' : 'opened'
+  })
+  agentPanelStore.toggle()
+}
 const { isLoggedIn } = useCurrentUser()
 
 // Dismiss a tab's terminal status badge once it has been viewed

src/extensions/core/agentPanel.test.ts

@@ -0,0 +1,80 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+import type { ComfyExtension } from '@/types/comfy'
+
+const mocks = vi.hoisted(() => ({
+  capturedExtensions: [] as ComfyExtension[],
+  agentStore: { enabled: false, close: vi.fn() },
+  flagEnabled: undefined as boolean | undefined,
+  flagListener: null as (() => void) | null
+}))
+
+vi.mock('@/services/extensionService', () => ({
+  useExtensionService: () => ({
+    registerExtension: (ext: ComfyExtension) => {
+      mocks.capturedExtensions.push(ext)
+    }
+  })
+}))
+
+vi.mock('@/workbench/extensions/agent/stores/agent/agentPanelStore', () => ({
+  useAgentPanelStore: () => mocks.agentStore
+}))
+
+vi.mock('posthog-js', () => ({
+  default: {
+    isFeatureEnabled: () => mocks.flagEnabled,
+    onFeatureFlags: (listener: () => void) => {
+      mocks.flagListener = listener
+      return () => {}
+    }
+  }
+}))
+
+const flush = (): Promise<void> =>
+  new Promise((resolve) => setTimeout(resolve, 0))
+
+async function loadEntryAndSetup(): Promise<void> {
+  await import('./agentPanel')
+  const ext = mocks.capturedExtensions.find(
+    (e) => e.name === 'Comfy.AgentPanel'
+  )
+  expect(ext).toBeDefined()
+  ext!.setup!({} as Parameters<NonNullable<ComfyExtension['setup']>>[0])
+  for (let i = 0; i < 20 && mocks.flagListener === null; i++) await flush()
+  expect(mocks.flagListener).toBeTypeOf('function')
+}
+
+describe('AgentPanel extension flag gate', () => {
+  beforeEach(() => {
+    mocks.capturedExtensions.length = 0
+    mocks.agentStore.close.mockClear()
+    mocks.agentStore.enabled = false
+    mocks.flagEnabled = undefined
+    mocks.flagListener = null
+    vi.resetModules()
+  })
+
+  it('leaves the panel disabled while the flag is undefined', async () => {
+    await loadEntryAndSetup()
+    expect(mocks.agentStore.enabled).toBe(false)
+  })
+
+  it('enables the panel when the flag turns true', async () => {
+    await loadEntryAndSetup()
+    mocks.flagEnabled = true
+    mocks.flagListener!()
+    expect(mocks.agentStore.enabled).toBe(true)
+  })
+
+  it('disables and closes the panel when the flag flips back to false', async () => {
+    await loadEntryAndSetup()
+    mocks.flagEnabled = true
+    mocks.flagListener!()
+    mocks.flagEnabled = false
+    mocks.flagListener!()
+
+    expect(mocks.agentStore.enabled).toBe(false)
+    expect(mocks.agentStore.close).toHaveBeenCalledWith('flag_disabled')
+  })
+})

src/extensions/core/agentPanel.ts

@@ -0,0 +1,25 @@
+import { createPostHogFlagSource } from '@/workbench/extensions/agent/composables/agent/useAgentFeatureGate'
+import { useAgentPanelStore } from '@/workbench/extensions/agent/stores/agent/agentPanelStore'
+import { useExtensionService } from '@/services/extensionService'
+
+useExtensionService().registerExtension({
+  name: 'Comfy.AgentPanel',
+  setup() {
+    const agentPanelStore = useAgentPanelStore()
+
+    async function setupFlagGate(): Promise<void> {
+      const posthog = (await import('posthog-js')).default
+      const source = createPostHogFlagSource(posthog)
+      const sync = (): void => {
+        const forceInDev = import.meta.env.MODE === 'development'
+        const enabled = forceInDev || source.isEnabled()
+        agentPanelStore.enabled = enabled
+        if (!enabled) agentPanelStore.close('flag_disabled')
+      }
+      source.onChange?.(sync)
+      sync()
+    }
+
+    void setupFlagGate()
+  }
+})

src/extensions/core/index.ts

@@ -38,6 +38,7 @@ if (isCloud) {
   await import('./cloudRemoteConfig')
   await import('./cloudBadges')
   await import('./cloudSessionCookie')
+  await import('./agentPanel')
 }
 
 // Feedback button for cloud and nightly builds

src/locales/en/main.json

@@ -4356,6 +4356,14 @@
       "prompt_outputs_failed_validation": {
         "title": "Prompt validation failed",
         "desc": "The workflow has invalid node inputs. Fix the highlighted nodes before running it again."
+      },
+      "agent_draft_apply_failed": {
+        "title": "An error was found",
+        "desc": "Couldn't apply the agent's draft to the canvas."
+      },
+      "agent_api_failed": {
+        "title": "An error was found",
+        "desc": "Comfy Agent hit a server error."
       }
     }
   },
@@ -4547,5 +4555,74 @@
     "training": "Training…",
     "processingVideo": "Processing video…",
     "running": "Running…"
+  },
+  "agent": {
+    "title": "Comfy Agent",
+    "askComfyAgent": "Ask Comfy Agent",
+    "caption": "The agent edits your workflow as a draft. Only you can run it.",
+    "latest": "Latest",
+    "copyUnavailable": "Only the current conversation can be copied in this version",
+    "alpha": "ALPHA",
+    "newChat": "New chat",
+    "newChatTitle": "Untitled",
+    "maximize": "Maximize panel",
+    "minimize": "Minimize panel",
+    "close": "Close",
+    "history": "Chat history",
+    "showChatHistory": "Show chat history",
+    "backToChat": "Back to chat",
+    "historyCurrent": "Current",
+    "historyToday": "Today",
+    "historyYesterday": "Yesterday",
+    "historyEarlier": "Earlier",
+    "historyEmpty": "No conversations yet",
+    "copyMarkdown": "Copy as markdown",
+    "delete": "Delete",
+    "untitledChat": "Untitled",
+    "skip": "Skip",
+    "gotIt": "Got it",
+    "greeting": "Hello {name},",
+    "greetingQuestion": "What do you want to make?",
+    "placeholder": "Ask Comfy Agent…",
+    "suggestedPrompts": [
+      "Generate a yellow duck with a hockey mask",
+      "List my saved workflows",
+      "Find the best workflow for skin upscaling",
+      "Explain the selected node",
+      "Build a workflow for image to video with 3 models"
+    ],
+    "attach": "Attach a file",
+    "attachmentTooLarge": "{name} is larger than {limit}",
+    "attachmentUploadFailed": "{name} could not be uploaded",
+    "mention": "Mention a node",
+    "modelAuto": "Auto",
+    "send": "Send",
+    "stop": "Stop",
+    "thinking": "Thinking...",
+    "helpful": "Helpful",
+    "notHelpful": "Not helpful",
+    "toggleRaw": "Toggle raw markdown",
+    "ranToolCalls": "Ran {count} tool call | Ran {count} tool calls",
+    "copy": "Copy",
+    "copied": "Copied!",
+    "remove": "Remove",
+    "uploading": "Uploading",
+    "noNodesToMention": "No nodes in this workflow",
+    "friend": "there",
+    "conflictTitle": "Agent changes are ready",
+    "conflictBody": "You edited this workflow while Comfy Agent changed the same graph. Choose what should happen in this tab.",
+    "keepMine": "Keep my changes",
+    "acceptAgent": "Accept agent changes",
+    "moreApplyOptions": "More apply options",
+    "openNewTab": "Open in new tab",
+    "sendFailed": "Message failed to send",
+    "sendBusy": "A message is already being sent",
+    "malformedEvent": "The agent sent an event this panel could not read",
+    "coachTitle": "Meet the agent",
+    "coachBody": "Ask it to build or edit graphs.",
+    "toolOpenedNewTab": "Opened a new tab",
+    "toolSwitchedTabs": "Switched tabs",
+    "toolSavedPreference": "Saved a preference",
+    "toolForgotPreference": "Forgot a preference"
   }
 }

src/platform/errorCatalog/errorMessageResolver.test.ts

@@ -555,6 +555,23 @@ describe('errorMessageResolver', () => {
     })
   })
 
+  it('resolves the agent draft-apply failure to overlay copy', () => {
+    expect(
+      resolveRunErrorMessage({
+        kind: 'prompt',
+        isCloud: true,
+        error: {
+          type: 'agent_draft_apply_failed',
+          message: "Couldn't apply the agent's draft to the canvas",
+          details: 'Validation error: Required at "version"'
+        }
+      })
+    ).toEqual({
+      displayTitle: 'An error was found',
+      displayMessage: "Couldn't apply the agent's draft to the canvas."
+    })
+  })
+
   it('resolves server_error prompt copy by environment', () => {
     const error = {
       type: 'server_error',

src/platform/errorCatalog/promptErrorResolver.ts

@@ -13,7 +13,8 @@ const KNOWN_PROMPT_ERROR_TYPES = new Set([
   'no_prompt',
   'server_error',
   'missing_node_type',
-  'prompt_outputs_failed_validation'
+  'prompt_outputs_failed_validation',
+  'agent_draft_apply_failed'
 ])
 
 function getPromptExceptionMessage(

src/platform/telemetry/TelemetryRegistry.ts

@@ -2,6 +2,13 @@ import type { AuditLog } from '@/services/customerEventsService'
 
 import type {
   AddCreditsClickMetadata,
+  AgentEntryButtonClickedMetadata,
+  AgentMessageFeedbackMetadata,
+  AgentMessageSentMetadata,
+  AgentNodeTaggedMetadata,
+  AgentPanelClosedMetadata,
+  AgentPanelOpenedMetadata,
+  AgentWorkflowAppliedMetadata,
   AuthErrorMetadata,
   AuthMetadata,
   BeginCheckoutMetadata,
@@ -288,6 +295,46 @@ export class TelemetryRegistry implements TelemetryDispatcher {
     this.dispatch((provider) => provider.trackUiButtonClicked?.(metadata))
   }
 
+  trackAgentMessageFeedback(metadata: AgentMessageFeedbackMetadata): void {
+    this.dispatch((provider) => provider.trackAgentMessageFeedback?.(metadata))
+  }
+
+  trackAgentPanelOpened(metadata: AgentPanelOpenedMetadata): void {
+    this.dispatch((provider) => provider.trackAgentPanelOpened?.(metadata))
+  }
+
+  trackAgentPanelClosed(metadata: AgentPanelClosedMetadata): void {
+    this.dispatch((provider) => provider.trackAgentPanelClosed?.(metadata))
+  }
+
+  trackAgentEntryButtonClicked(
+    metadata: AgentEntryButtonClickedMetadata
+  ): void {
+    this.dispatch((provider) =>
+      provider.trackAgentEntryButtonClicked?.(metadata)
+    )
+  }
+
+  trackAgentCloseButtonClicked(): void {
+    this.dispatch((provider) => provider.trackAgentCloseButtonClicked?.())
+  }
+
+  trackAgentMessageSent(metadata: AgentMessageSentMetadata): void {
+    this.dispatch((provider) => provider.trackAgentMessageSent?.(metadata))
+  }
+
+  trackAgentNodeTagged(metadata: AgentNodeTaggedMetadata): void {
+    this.dispatch((provider) => provider.trackAgentNodeTagged?.(metadata))
+  }
+
+  trackAgentAttachButtonClicked(): void {
+    this.dispatch((provider) => provider.trackAgentAttachButtonClicked?.())
+  }
+
+  trackAgentWorkflowApplied(metadata: AgentWorkflowAppliedMetadata): void {
+    this.dispatch((provider) => provider.trackAgentWorkflowApplied?.(metadata))
+  }
+
   trackPageView(pageName: string, properties?: PageViewMetadata): void {
     this.dispatch((provider) => provider.trackPageView?.(pageName, properties))
   }

src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.test.ts

@@ -135,6 +135,29 @@ describe('PostHogTelemetryProvider', () => {
       )
     })
 
+    it("lets the server's person_profiles win over the client default", async () => {
+      hoisted.refs.remoteConfig.value = {
+        posthog_config: { person_profiles: 'always' }
+      }
+      createProvider()
+      await vi.dynamicImportSettled()
+
+      expect(hoisted.mockInit).toHaveBeenCalledWith(
+        'phc_test_token',
+        expect.objectContaining({ person_profiles: 'always' })
+      )
+    })
+
+    it('defaults person_profiles to identified_only when the server omits it', async () => {
+      createProvider()
+      await vi.dynamicImportSettled()
+
+      expect(hoisted.mockInit).toHaveBeenCalledWith(
+        'phc_test_token',
+        expect.objectContaining({ person_profiles: 'identified_only' })
+      )
+    })
+
     it('registers onUserResolved callback after init', async () => {
       createProvider()
       await vi.dynamicImportSettled()
@@ -870,12 +893,11 @@ describe('PostHogTelemetryProvider', () => {
       expect(result.$set_once).toHaveProperty('plan', 'free')
     })
 
-    it('remoteConfig.posthog_config cannot override before_send or person_profiles', async () => {
+    it('remoteConfig.posthog_config cannot override before_send (PII stripping)', async () => {
       const remoteBefore_send = vi.fn()
       hoisted.refs.remoteConfig.value = {
         posthog_config: {
-          before_send: remoteBefore_send,
-          person_profiles: 'always'
+          before_send: remoteBefore_send
         }
       }
 
@@ -885,7 +907,6 @@ describe('PostHogTelemetryProvider', () => {
       const initConfig = hoisted.mockInit.mock.calls[0][1]
 
       expect(initConfig.before_send).not.toBe(remoteBefore_send)
-      expect(initConfig.person_profiles).toBe('identified_only')
     })
   })
 })

src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.ts

@@ -11,6 +11,13 @@ import type { RemoteConfig } from '@/platform/remoteConfig/types'
 
 import type {
   AddCreditsClickMetadata,
+  AgentEntryButtonClickedMetadata,
+  AgentMessageFeedbackMetadata,
+  AgentMessageSentMetadata,
+  AgentNodeTaggedMetadata,
+  AgentPanelClosedMetadata,
+  AgentPanelOpenedMetadata,
+  AgentWorkflowAppliedMetadata,
   AuthErrorMetadata,
   AuthMetadata,
   BeginCheckoutMetadata,
@@ -119,7 +126,9 @@ export class PostHogTelemetryProvider implements TelemetryProvider {
       { immediate: true }
     )
 
-    const apiKey = window.__CONFIG__?.posthog_project_token
+    const apiKey =
+      window.__CONFIG__?.posthog_project_token ??
+      import.meta.env.VITE_POSTHOG_PROJECT_TOKEN
     if (apiKey) {
       try {
         void import('posthog-js')
@@ -135,8 +144,8 @@ export class PostHogTelemetryProvider implements TelemetryProvider {
               capture_pageleave: false,
               persistence: 'localStorage+cookie',
               debug: import.meta.env.VITE_POSTHOG_DEBUG === 'true',
-              ...serverConfig,
               person_profiles: 'identified_only',
+              ...serverConfig,
               // cookie_domain omitted: posthog-js sets a first-party cross-subdomain cookie
               // automatically when persistence includes 'cookie' (the default).
               // Explicit override interacts badly with posthog-js#3578 where reset() fails
@@ -569,6 +578,44 @@ export class PostHogTelemetryProvider implements TelemetryProvider {
     this.trackEvent(TelemetryEvents.UI_BUTTON_CLICKED, metadata)
   }
 
+  trackAgentMessageFeedback(metadata: AgentMessageFeedbackMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_MESSAGE_FEEDBACK, metadata)
+  }
+
+  trackAgentPanelOpened(metadata: AgentPanelOpenedMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_PANEL_OPENED, metadata)
+  }
+
+  trackAgentPanelClosed(metadata: AgentPanelClosedMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_PANEL_CLOSED, metadata)
+  }
+
+  trackAgentEntryButtonClicked(
+    metadata: AgentEntryButtonClickedMetadata
+  ): void {
+    this.trackEvent(TelemetryEvents.AGENT_ENTRY_BUTTON_CLICKED, metadata)
+  }
+
+  trackAgentCloseButtonClicked(): void {
+    this.trackEvent(TelemetryEvents.AGENT_CLOSE_BUTTON_CLICKED)
+  }
+
+  trackAgentMessageSent(metadata: AgentMessageSentMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_MESSAGE_SENT, metadata)
+  }
+
+  trackAgentNodeTagged(metadata: AgentNodeTaggedMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_NODE_TAGGED, metadata)
+  }
+
+  trackAgentAttachButtonClicked(): void {
+    this.trackEvent(TelemetryEvents.AGENT_ATTACH_BUTTON_CLICKED)
+  }
+
+  trackAgentWorkflowApplied(metadata: AgentWorkflowAppliedMetadata): void {
+    this.trackEvent(TelemetryEvents.AGENT_WORKFLOW_APPLIED, metadata)
+  }
+
   trackPageView(pageName: string, properties?: PageViewMetadata): void {
     this.captureRaw(TelemetryEvents.PAGE_VIEW, {
       page_name: pageName,

src/platform/telemetry/types.ts

@@ -401,6 +401,51 @@ export interface UiButtonClickMetadata {
   element_group: string
 }
 
+/**
+ * In-App Agent message rating metadata (PM-98). `vote` is null when the user retracts a
+ * prior thumb, which the eval pipeline records as a retraction rather than dropping.
+ */
+export interface AgentMessageFeedbackMetadata extends Record<string, unknown> {
+  message_id: string
+  vote: 'up' | 'down' | null
+  workflow_id: string | null
+}
+
+export type AgentPanelCloseSource =
+  | 'topbar_button'
+  | 'close_button'
+  | 'flag_disabled'
+
+export interface AgentPanelOpenedMetadata extends Record<string, unknown> {
+  source: 'topbar_button'
+}
+
+export interface AgentPanelClosedMetadata extends Record<string, unknown> {
+  source: AgentPanelCloseSource
+  open_duration_ms: number | null
+}
+
+export interface AgentEntryButtonClickedMetadata extends Record<
+  string,
+  unknown
+> {
+  resulting_state: 'opened' | 'closed'
+}
+
+export interface AgentMessageSentMetadata extends Record<string, unknown> {
+  attachment_count: number
+  node_tag_count: number
+}
+
+export interface AgentNodeTaggedMetadata extends Record<string, unknown> {
+  source: 'mention_picker'
+}
+
+export interface AgentWorkflowAppliedMetadata extends Record<string, unknown> {
+  workflow_id: string
+  target: 'new_tab' | 'existing_tab' | 'active_tab_open' | 'active_tab_switch'
+}
+
 /**
  * Help center opened metadata
  */
@@ -642,6 +687,19 @@ export interface TelemetryProvider {
   // Generic UI button click events
   trackUiButtonClicked?(metadata: UiButtonClickMetadata): void
 
+  // In-App Agent message rating (PM-98)
+  trackAgentMessageFeedback?(metadata: AgentMessageFeedbackMetadata): void
+
+  // In-App Agent panel engagement (FE-1187)
+  trackAgentPanelOpened?(metadata: AgentPanelOpenedMetadata): void
+  trackAgentPanelClosed?(metadata: AgentPanelClosedMetadata): void
+  trackAgentEntryButtonClicked?(metadata: AgentEntryButtonClickedMetadata): void
+  trackAgentCloseButtonClicked?(): void
+  trackAgentMessageSent?(metadata: AgentMessageSentMetadata): void
+  trackAgentNodeTagged?(metadata: AgentNodeTaggedMetadata): void
+  trackAgentAttachButtonClicked?(): void
+  trackAgentWorkflowApplied?(metadata: AgentWorkflowAppliedMetadata): void
+
   // Page view tracking
   trackPageView?(pageName: string, properties?: PageViewMetadata): void
 }
@@ -745,6 +803,17 @@ export const TelemetryEvents = {
   // Generic UI Button Click
   UI_BUTTON_CLICKED: 'app:ui_button_clicked',
 
+  // In-App Agent
+  AGENT_MESSAGE_FEEDBACK: 'app:agent_message_feedback',
+  AGENT_PANEL_OPENED: 'app:agent_panel_opened',
+  AGENT_PANEL_CLOSED: 'app:agent_panel_closed',
+  AGENT_ENTRY_BUTTON_CLICKED: 'app:agent_entry_button_clicked',
+  AGENT_CLOSE_BUTTON_CLICKED: 'app:agent_close_button_clicked',
+  AGENT_MESSAGE_SENT: 'app:agent_message_sent',
+  AGENT_NODE_TAGGED: 'app:agent_node_tagged',
+  AGENT_ATTACH_BUTTON_CLICKED: 'app:agent_attach_button_clicked',
+  AGENT_WORKFLOW_APPLIED: 'app:agent_workflow_applied',
+
   // Page View
   PAGE_VIEW: 'app:page_view'
 } as const
@@ -795,6 +864,13 @@ export type TelemetryEventProperties =
   | HelpCenterOpenedMetadata
   | HelpResourceClickedMetadata
   | HelpCenterClosedMetadata
+  | AgentMessageFeedbackMetadata
+  | AgentPanelOpenedMetadata
+  | AgentPanelClosedMetadata
+  | AgentEntryButtonClickedMetadata
+  | AgentMessageSentMetadata
+  | AgentNodeTaggedMetadata
+  | AgentWorkflowAppliedMetadata
   | WorkflowCreatedMetadata
   | EnterLinearMetadata
   | ShareFlowMetadata

src/workbench/extensions/agent/AgentPanelRoot.vue

@@ -0,0 +1,752 @@
+<script setup lang="ts">
+import './agentPanel.css'
+
+import { useClipboard } from '@vueuse/core'
+import { computed, nextTick, onBeforeUnmount, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import { useCurrentUser } from '@/composables/auth/useCurrentUser'
+import { useTelemetry } from '@/platform/telemetry'
+import { useWorkflowService } from '@/platform/workflow/core/services/workflowService'
+import type { ComfyWorkflow } from '@/platform/workflow/management/stores/comfyWorkflow'
+import { useWorkflowStore } from '@/platform/workflow/management/stores/workflowStore'
+import { validateComfyWorkflow } from '@/platform/workflow/validation/schemas/workflowSchema'
+import { appendWorkflowJsonExt } from '@/utils/formatUtil'
+// eslint-disable-next-line import-x/no-restricted-paths
+import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
+import { api } from '@/scripts/api'
+import { app } from '@/scripts/app'
+import { useExecutionErrorStore } from '@/stores/executionErrorStore'
+import { isLGraphNode } from '@/utils/litegraphUtil'
+import { useToastStore } from '@/platform/updates/common/toastStore'
+
+import AgentPanel from './components/agent/AgentPanel.vue'
+import OnboardingCoach from './components/agent/OnboardingCoach.vue'
+import type { ConflictChoice } from './components/agent/safety/ConflictDialog.vue'
+import { useAttachment } from './composables/agent/useAttachment'
+import type { ActiveTab } from './components/agent/ActiveTabStrip.vue'
+import type { SelectedNode } from './composables/agent/useCanvasSelection'
+import { useCanvasSelection } from './composables/agent/useCanvasSelection'
+import type { CoachStep } from './composables/agent/useOnboarding'
+import type { ComposerAttachment } from './composables/agent/useComposer'
+import type {
+  AgentActiveTabData,
+  AgentDraftSnapshot,
+  AgentThreadSummary
+} from './schemas/agentApiSchema'
+import type { ChatSession } from './stores/agent/agentChatHistoryStore'
+import type { ConversationEntry } from './stores/agent/agentConversationStore'
+import type { WorkflowTurnContext } from './composables/agent/useAgentSession'
+import { useAgentSession } from './composables/agent/useAgentSession'
+import { useAgentDraftStore } from './stores/agent/agentDraftStore'
+import { useAgentWorkflowTabBindingStore } from './stores/agent/agentWorkflowTabBindingStore'
+import {
+  AgentApiError,
+  createAgentRestClient
+} from './services/agent/agentRestClient'
+import type {
+  DraftUpload,
+  OpenTabsSnapshot
+} from './services/agent/agentRestClient'
+import { createAgentEventSource } from './services/agent/agentEventSource'
+import { useAgentChatHistoryStore } from './stores/agent/agentChatHistoryStore'
+import { useAgentPanelStore } from './stores/agent/agentPanelStore'
+
+const { t } = useI18n()
+const toast = useToastStore()
+
+const { userDisplayName } = useCurrentUser()
+const userName = computed(
+  () => userDisplayName.value?.trim().split(/\s+/)[0] || undefined
+)
+
+const rest = createAgentRestClient()
+
+const events = createAgentEventSource(api)
+
+const workflowStore = useWorkflowStore()
+const workflowService = useWorkflowService()
+const bindingStore = useAgentWorkflowTabBindingStore()
+const draftStore = useAgentDraftStore()
+const agentPanelStore = useAgentPanelStore()
+
+const canvasStore = useCanvasStore()
+const selectedNodes = computed<SelectedNode[]>(() =>
+  canvasStore.selectedItems.filter(isLGraphNode).map((node) => ({
+    id: String(node.id),
+    title: node.title || node.type
+  }))
+)
+const {
+  staged: selectionTags,
+  consume: consumeSelection,
+  remove: removeSelectionTag,
+  add: addSelectionTag
+} = useCanvasSelection({
+  selection: selectedNodes,
+  isLive: () => agentPanelStore.isOpen
+})
+
+function viewedGraphNodes() {
+  return app.canvas?.graph?.nodes ?? app.graph?.nodes ?? []
+}
+
+function mentionableNodes(): SelectedNode[] {
+  return viewedGraphNodes().map((node) => ({
+    id: String(node.id),
+    title: node.title || node.type
+  }))
+}
+
+let cloudIdsByName = new Map<string, string>()
+
+async function refreshCloudWorkflowIds(): Promise<void> {
+  try {
+    const workflows = await rest.listCloudWorkflows()
+    const nameCounts = new Map<string, number>()
+    for (const { name } of workflows) {
+      if (name !== undefined)
+        nameCounts.set(name, (nameCounts.get(name) ?? 0) + 1)
+    }
+    cloudIdsByName = new Map(
+      workflows.flatMap(({ id, name }) =>
+        name !== undefined && nameCounts.get(name) === 1
+          ? [[name, id] as const]
+          : []
+      )
+    )
+  } catch (error) {
+    console.warn('[agent] could not refresh cloud workflow ids', error)
+  }
+}
+
+function openSavedTabsNamed(filename: string): ComfyWorkflow[] {
+  return workflowStore.openWorkflows.filter(
+    (tab) => !tab.isTemporary && tab.filename === filename
+  )
+}
+
+function cloudIdFor(tab: ComfyWorkflow): string | undefined {
+  const saved =
+    !tab.isTemporary && openSavedTabsNamed(tab.filename).length === 1
+      ? cloudIdsByName.get(tab.filename)
+      : undefined
+  return saved ?? bindingStore.workflowIdFor(tab.path)
+}
+
+let lastKnownGraph: { serialized: string; workflowId: string } | null = null
+
+function reclaimMovedBinding(activePath: string): string | undefined {
+  if (lastKnownGraph === null) return undefined
+  const graph = app.graph?.serialize()
+  if (!graph || JSON.stringify(graph) !== lastKnownGraph.serialized)
+    return undefined
+  const { workflowId } = lastKnownGraph
+  bindingStore.bind(workflowId, activePath)
+  lastKnownGraph = null
+  return workflowId
+}
+
+function activeWorkflowTurnContext(): WorkflowTurnContext | undefined {
+  const active = workflowStore.activeWorkflow
+  if (!active) return undefined
+  const bound = cloudIdFor(active) ?? reclaimMovedBinding(active.path)
+  return bound === undefined ? undefined : { id: bound, tabPath: active.path }
+}
+
+const activeTab = computed<ActiveTab | null>(() => {
+  const active = workflowStore.activeWorkflow
+  return active ? { name: active.filename } : null
+})
+
+let lastSentGraph: string | null = null
+let snapshotTabPath: string | null = null
+
+function takeWorkflowSnapshot(): DraftUpload | undefined {
+  const graph = app.graph?.serialize()
+  if (!graph?.nodes?.length) return undefined
+  const serialized = JSON.stringify(graph)
+  const activePath = workflowStore.activeWorkflow?.path ?? null
+  if (serialized === lastSentGraph && activePath === snapshotTabPath)
+    return undefined
+  lastSentGraph = serialized
+  snapshotTabPath = activePath
+  return { content: graph, version: draftStore.version }
+}
+
+function resetSnapshotGuard(): void {
+  lastSentGraph = null
+  snapshotTabPath = null
+  lastKnownGraph = null
+}
+
+function openTabsSnapshot(): OpenTabsSnapshot | undefined {
+  const openTabs = workflowStore.openWorkflows.flatMap((tab) => {
+    const workflowId = cloudIdFor(tab)
+    return workflowId === undefined
+      ? []
+      : [{ workflow_id: workflowId, name: tab.filename }]
+  })
+  if (openTabs.length === 0) return undefined
+  const active = workflowStore.activeWorkflow
+  return {
+    open_tabs: openTabs,
+    current_tab: active ? cloudIdFor(active) : undefined
+  }
+}
+
+function onWorkflowAdopted(
+  workflowId: string,
+  sent: WorkflowTurnContext | undefined,
+  uploaded: boolean
+): void {
+  if (uploaded && lastSentGraph !== null)
+    lastKnownGraph = { serialized: lastSentGraph, workflowId }
+  if (sent !== undefined && sent.id === workflowId) {
+    bindingStore.bind(workflowId, sent.tabPath)
+    return
+  }
+  if (uploaded && snapshotTabPath !== null)
+    bindingStore.bind(workflowId, snapshotTabPath)
+}
+
+const {
+  sendMessage,
+  stopTurn,
+  newChat,
+  start,
+  stop,
+  entries,
+  isStreaming,
+  status,
+  notices,
+  threadId,
+  listThreads,
+  loadThread
+} = useAgentSession({
+  rest,
+  events,
+  workflow: {
+    current: activeWorkflowTurnContext,
+    adopted: onWorkflowAdopted,
+    prepare: refreshCloudWorkflowIds,
+    snapshot: takeWorkflowSnapshot,
+    uploadSkipped: resetSnapshotGuard,
+    tabs: openTabsSnapshot,
+    activeTab: enqueueActiveTab
+  }
+})
+
+const executionErrorStore = useExecutionErrorStore()
+
+function surfaceAgentError(
+  type: 'agent_api_failed' | 'agent_draft_apply_failed',
+  details: string
+): void {
+  executionErrorStore.lastPromptError = {
+    type,
+    message: t(`errorCatalog.promptErrors.${type}.desc`),
+    details
+  }
+  executionErrorStore.showErrorOverlay()
+}
+
+let noticesSeen = 0
+watch(
+  () => notices.value.length,
+  (length) => {
+    for (const notice of notices.value.slice(noticesSeen))
+      surfaceAgentError('agent_api_failed', notice.text)
+    noticesSeen = length
+  }
+)
+
+let draftRejectionNotified = false
+
+function surfaceDraftApplyFailure(details: string): void {
+  console.warn(details)
+  if (draftRejectionNotified) return
+  draftRejectionNotified = true
+  surfaceAgentError('agent_draft_apply_failed', details)
+}
+
+const conflictOpen = ref(false)
+let applySuppressed = false
+let lastApplied: { workflowId: string; version: number } | null = null
+let applying = false
+let reapplyQueued = false
+
+function boundTabFor(workflowId: string): ComfyWorkflow | null {
+  const path = bindingStore.tabPathFor(workflowId)
+  const bound =
+    path === undefined ? null : workflowStore.getWorkflowByPath(path)
+  if (bound) return bound
+  for (const [name, id] of cloudIdsByName) {
+    if (id !== workflowId) continue
+    const matches = openSavedTabsNamed(name)
+    return matches.length === 1 ? matches[0] : null
+  }
+  return null
+}
+
+function unusedFilenameFor(tab: ComfyWorkflow): string {
+  const takenByOther = (filename: string) => {
+    const path =
+      tab.directory +
+      '/' +
+      appendWorkflowJsonExt(filename, tab.initialMode === 'app')
+    return path !== tab.path && workflowStore.getWorkflowByPath(path) !== null
+  }
+  if (!takenByOther(tab.filename)) return tab.filename
+  let counter = 2
+  while (takenByOther(`${tab.filename} (${counter})`)) counter++
+  return `${tab.filename} (${counter})`
+}
+
+async function autosaveAppliedDraft(
+  workflowId: string,
+  tab: ComfyWorkflow
+): Promise<void> {
+  try {
+    const saved = tab.isTemporary
+      ? await workflowService.saveWorkflowAs(tab, {
+          filename: unusedFilenameFor(tab)
+        })
+      : await workflowService.saveWorkflow(tab)
+    if (!saved) console.error(`Agent draft autosave failed for ${tab.path}`)
+  } catch (error) {
+    console.error(`Agent draft autosave failed for ${tab.path}:`, error)
+  } finally {
+    bindingStore.bind(workflowId, tab.path)
+  }
+}
+
+let activeTabGeneration = 0
+let activeTabChain: Promise<void> = Promise.resolve()
+const lastRenderedVersions = new Map<string, number>()
+
+function enqueueActiveTab(data: AgentActiveTabData): void {
+  const generation = ++activeTabGeneration
+  activeTabChain = activeTabChain.then(() => onAgentActiveTab(data, generation))
+}
+
+function agentTabFilename(name: string | undefined): string | undefined {
+  const cleaned = [
+    ...(name ?? '')
+      .replace(/[/\\\p{Cc}]/gu, '-')
+      .replace(/\.json$/i, '')
+      .trim()
+      .replace(/^\.+/, '')
+  ]
+    .slice(0, 80)
+    .join('')
+    .replace(/^[\s.]+/u, '')
+    .trim()
+  return cleaned.length === 0 ? undefined : `${cleaned}.json`
+}
+
+async function fetchDraftSnapshot(
+  workflowId: string
+): Promise<AgentDraftSnapshot | null> {
+  try {
+    return await rest.getDraft(workflowId)
+  } catch (error) {
+    if (error instanceof AgentApiError && error.status === 404) return null
+    throw error
+  }
+}
+
+function recordRenderedVersion(nextWorkflowId: string): void {
+  const leaving = draftStore.workflowId
+  if (leaving === null || leaving === nextWorkflowId) return
+  if (lastApplied?.workflowId === leaving)
+    lastRenderedVersions.set(leaving, lastApplied.version)
+  else lastRenderedVersions.delete(leaving)
+}
+
+async function adoptDraftBase(
+  workflowId: string,
+  snapshot: AgentDraftSnapshot,
+  armVersion: number = snapshot.version
+): Promise<void> {
+  draftStore.bind(workflowId)
+  await nextTick()
+  if (
+    !(
+      lastApplied?.workflowId === workflowId && lastApplied.version > armVersion
+    )
+  )
+    lastApplied = { workflowId, version: armVersion }
+  draftStore.adoptSnapshot(snapshot)
+}
+
+async function onAgentActiveTab(
+  data: AgentActiveTabData,
+  generation: number
+): Promise<void> {
+  const stale = () => generation !== activeTabGeneration
+  if (stale()) return
+  try {
+    recordRenderedVersion(data.workflow_id)
+    const bound = boundTabFor(data.workflow_id)
+    if (bound) {
+      const alreadyCurrent =
+        draftStore.workflowId === data.workflow_id &&
+        draftStore.version !== null
+      await workflowService.openWorkflow(bound)
+      if (stale()) return
+      draftStore.bind(data.workflow_id)
+      const snapshot = await fetchDraftSnapshot(data.workflow_id)
+      if (stale()) return
+      if (
+        snapshot !== null &&
+        !(alreadyCurrent && (draftStore.version ?? -1) >= snapshot.version)
+      )
+        await adoptDraftBase(
+          data.workflow_id,
+          snapshot,
+          lastRenderedVersions.get(data.workflow_id) ?? -1
+        )
+      useTelemetry()?.trackAgentWorkflowApplied({
+        workflow_id: data.workflow_id,
+        target: 'active_tab_switch'
+      })
+      return
+    }
+    const snapshot = await fetchDraftSnapshot(data.workflow_id)
+    if (stale()) return
+    let validationError = ''
+    const workflow =
+      snapshot === null
+        ? null
+        : await validateComfyWorkflow(snapshot.content, (error) => {
+            validationError = error
+          })
+    if (stale()) return
+    if (snapshot !== null && !workflow) {
+      surfaceDraftApplyFailure(validationError)
+      draftStore.bind(data.workflow_id)
+      return
+    }
+    const tab = workflowStore.createTemporary(
+      agentTabFilename(data.name),
+      workflow ?? undefined
+    )
+    await workflowService.openWorkflow(tab)
+    if (stale()) return
+    await autosaveAppliedDraft(data.workflow_id, tab)
+    if (stale()) return
+    if (snapshot === null) draftStore.bind(data.workflow_id)
+    else await adoptDraftBase(data.workflow_id, snapshot)
+    useTelemetry()?.trackAgentWorkflowApplied({
+      workflow_id: data.workflow_id,
+      target: 'active_tab_open'
+    })
+  } catch (error) {
+    if (stale()) return
+    draftStore.bind(data.workflow_id)
+    surfaceAgentError(
+      'agent_api_failed',
+      error instanceof Error ? error.message : String(error)
+    )
+  }
+}
+
+async function loadDraft(
+  workflowId: string,
+  version: number,
+  content: Record<string, unknown>,
+  tab: ComfyWorkflow | null
+): Promise<void> {
+  const workflow = await validateComfyWorkflow(content, (error) => {
+    surfaceDraftApplyFailure(error)
+  })
+  if (!workflow) return
+  const openBefore = new Set(workflowStore.openWorkflows.map((w) => w.path))
+  try {
+    await app.loadGraphData(workflow, true, true, tab)
+    draftRejectionNotified = false
+    lastApplied = { workflowId, version }
+    const rendered = app.graph?.serialize()
+    if (rendered)
+      lastKnownGraph = { serialized: JSON.stringify(rendered), workflowId }
+    useTelemetry()?.trackAgentWorkflowApplied({
+      workflow_id: workflowId,
+      target: tab === null ? 'new_tab' : 'existing_tab'
+    })
+    if (tab === null) {
+      const opened = workflowStore.openWorkflows.find(
+        (w) => !openBefore.has(w.path)
+      )
+      if (opened) {
+        bindingStore.bind(workflowId, opened.path)
+        await autosaveAppliedDraft(workflowId, opened)
+      }
+      return
+    }
+    await autosaveAppliedDraft(workflowId, tab)
+  } catch (error) {
+    surfaceDraftApplyFailure(
+      error instanceof Error ? error.message : String(error)
+    )
+  }
+}
+
+async function applyDraft(): Promise<void> {
+  if (applying) {
+    reapplyQueued = true
+    return
+  }
+  applying = true
+  try {
+    const workflowId = draftStore.workflowId
+    const version = draftStore.version
+    const content = draftStore.content
+    if (workflowId === null || version === null || content === null) return
+    if (applySuppressed) return
+    if (
+      lastApplied !== null &&
+      lastApplied.workflowId === workflowId &&
+      lastApplied.version >= version
+    )
+      return
+    const nodes = (content as { nodes?: unknown }).nodes
+    if (!Array.isArray(nodes) || nodes.length === 0) return
+    const boundTab = boundTabFor(workflowId)
+    if (boundTab) {
+      if (workflowStore.activeWorkflow?.path !== boundTab.path) return
+      if (boundTab.isModified) {
+        conflictOpen.value = true
+        return
+      }
+      await loadDraft(workflowId, version, content, boundTab)
+      return
+    }
+    await loadDraft(workflowId, version, content, null)
+  } finally {
+    applying = false
+    if (reapplyQueued) {
+      reapplyQueued = false
+      void applyDraft()
+    }
+  }
+}
+
+watch(
+  () => draftStore.version,
+  (version) => {
+    if (version === null || draftStore.content === null) return
+    void applyDraft()
+  }
+)
+watch(
+  () => workflowStore.activeWorkflow?.path,
+  () => void applyDraft()
+)
+watch(
+  () => draftStore.workflowId,
+  () => {
+    lastApplied = null
+    applySuppressed = false
+    conflictOpen.value = false
+  }
+)
+
+function onResolveConflict(choice: ConflictChoice): void {
+  conflictOpen.value = false
+  const workflowId = draftStore.workflowId
+  const version = draftStore.version
+  const content = draftStore.content
+  if (workflowId === null || version === null || content === null) return
+  if (choice === 'cancel') {
+    applySuppressed = true
+    return
+  }
+  if (choice === 'mine') {
+    lastApplied = { workflowId, version }
+    return
+  }
+  void loadDraft(
+    workflowId,
+    version,
+    content,
+    choice === 'agent' ? boundTabFor(workflowId) : null
+  )
+}
+
+start()
+void refreshCloudWorkflowIds()
+onBeforeUnmount(stop)
+
+const history = useAgentChatHistoryStore()
+
+const { copy } = useClipboard({ legacy: true })
+
+function onFeedback(turnId: string, vote: 'up' | 'down' | null): void {
+  useTelemetry()?.trackAgentMessageFeedback({
+    message_id: turnId,
+    vote,
+    workflow_id: draftStore.workflowId
+  })
+}
+
+function toChatSession(thread: AgentThreadSummary): ChatSession {
+  const stamp = thread.last_message_at ?? thread.updated_at ?? thread.created_at
+  const updatedAt = stamp ? Date.parse(stamp) : Date.now()
+  return {
+    id: thread.id,
+    title: thread.title || thread.preview || t('agent.untitledChat'),
+    updatedAt: Number.isNaN(updatedAt) ? Date.now() : updatedAt
+  }
+}
+
+async function refreshHistory(): Promise<void> {
+  try {
+    history.replaceAll((await listThreads()).map(toChatSession))
+  } catch (error) {
+    surfaceAgentError(
+      'agent_api_failed',
+      error instanceof Error ? error.message : String(error)
+    )
+  }
+}
+
+watch(threadId, (id) => history.setActive(id), { immediate: true })
+
+void refreshHistory()
+
+async function onSelectHistory(id: string): Promise<void> {
+  resetSnapshotGuard()
+  await loadThread(id)
+  void refreshHistory()
+}
+
+function buildTranscriptMarkdown(entries: ConversationEntry[]): string {
+  return entries
+    .map((entry) => {
+      if (entry.role === 'user') return `**You:** ${entry.text}`
+      const text = entry.parts
+        .filter((part) => part.type === 'text')
+        .map((part) => part.text)
+        .join('')
+      return `**Agent:** ${text}`
+    })
+    .join('\n\n')
+}
+
+function onCopyMarkdown(id: string): void {
+  if (id === history.activeId) void copy(buildTranscriptMarkdown(entries.value))
+  else toast.add({ severity: 'info', summary: t('agent.copyUnavailable') })
+}
+
+const coachStep: CoachStep = {
+  target: '#agent-panel-root',
+  title: t('agent.coachTitle'),
+  body: t('agent.coachBody')
+}
+
+function onSend(text: string, attachments: ComposerAttachment[]): void {
+  applySuppressed = false
+  void applyDraft()
+  const nodeTags = consumeSelection()
+  useTelemetry()?.trackAgentMessageSent({
+    attachment_count: attachments.length,
+    node_tag_count: nodeTags.length
+  })
+  void sendMessage(text, attachments, nodeTags).then((ok) => {
+    if (!ok) resetSnapshotGuard()
+  })
+}
+
+function onStop(): void {
+  void stopTurn()
+}
+
+function onNewChat(): void {
+  resetSnapshotGuard()
+  newChat()
+}
+
+const panelRef = ref<InstanceType<typeof AgentPanel>>()
+const fileInput = ref<HTMLInputElement>()
+
+const attachment = useAttachment({
+  upload: async (file) => ({
+    ref: (await rest.uploadImage(file, file.name)).name
+  }),
+  onError: (message) => surfaceAgentError('agent_api_failed', message),
+  stage: (staged) => panelRef.value?.addAttachment(staged),
+  update: (id, patch) => panelRef.value?.updateAttachment(id, patch),
+  remove: (id) => panelRef.value?.removeAttachment(id)
+})
+
+function onAttach(): void {
+  useTelemetry()?.trackAgentAttachButtonClicked()
+  fileInput.value?.click()
+}
+
+function onMentionPick(node: SelectedNode): void {
+  const stagedBefore = selectionTags.value.length
+  addSelectionTag(node)
+  if (selectionTags.value.length > stagedBefore)
+    useTelemetry()?.trackAgentNodeTagged({ source: 'mention_picker' })
+}
+
+function onClosePanel(): void {
+  useTelemetry()?.trackAgentCloseButtonClicked()
+  agentPanelStore.close('close_button')
+}
+
+async function onFilesPicked(event: Event): Promise<void> {
+  const input = event.target as HTMLInputElement
+  const files = input.files
+  if (files && files.length > 0) await attachment.addFiles(Array.from(files))
+  input.value = ''
+}
+</script>
+
+<template>
+  <div id="agent-panel-root" class="size-full">
+    <input
+      ref="fileInput"
+      type="file"
+      accept="image/*,video/*"
+      multiple
+      class="hidden"
+      data-testid="agent-file-input"
+      @change="onFilesPicked"
+    />
+    <AgentPanel
+      ref="panelRef"
+      :entries
+      :user-name="userName"
+      :streaming="isStreaming"
+      :submitting="status === 'thinking'"
+      :can-attach="true"
+      :is-maximized="agentPanelStore.isMaximized"
+      :history-groups="history.grouped"
+      :selection-tags="selectionTags"
+      :active-tab="activeTab"
+      :conflict-open="conflictOpen"
+      :get-mention-nodes="mentionableNodes"
+      @send="onSend"
+      @stop="onStop"
+      @attach="onAttach"
+      @remove-tag="removeSelectionTag"
+      @mention-pick="onMentionPick"
+      @resolve-conflict="onResolveConflict"
+      @feedback="onFeedback"
+      @new-chat="onNewChat"
+      @toggle-size="agentPanelStore.toggleMaximize()"
+      @close="onClosePanel"
+      @open-history="refreshHistory()"
+      @select-history="onSelectHistory"
+      @delete-history="history.remove($event)"
+      @copy-history="onCopyMarkdown"
+    />
+    <OnboardingCoach
+      :step="coachStep"
+      storage-key="Comfy.AgentPanel.onboarded"
+    />
+  </div>
+</template>

src/workbench/extensions/agent/README.md

@@ -0,0 +1,7 @@
+# In-App Agent panel (FE-1187)
+
+The In-App Agent panel is a manager-pattern workbench extension. The panel lives
+entirely in this subtree and renders in a flag-gated right dock registered by
+`src/extensions/core/agentPanel.ts`, so it shares the host pinia and vue-i18n
+instances and wires every host dependency itself (REST client, `/ws` event source,
+draft-to-canvas seam).

src/workbench/extensions/agent/agentPanel.css

@@ -0,0 +1,76 @@
+@keyframes agent-collapsible-down {
+  from {
+    height: 0;
+  }
+  to {
+    height: var(--reka-collapsible-content-height);
+  }
+}
+
+@keyframes agent-collapsible-up {
+  from {
+    height: var(--reka-collapsible-content-height);
+  }
+  to {
+    height: 0;
+  }
+}
+
+@keyframes agent-shimmer {
+  from {
+    background-position: 150% center;
+  }
+  to {
+    background-position: -50% center;
+  }
+}
+
+.agent-shimmer-text {
+  background: linear-gradient(
+    90deg,
+    var(--color-muted-foreground) 35%,
+    var(--color-base-foreground) 50%,
+    var(--color-muted-foreground) 65%
+  );
+  background-size: 200% auto;
+  background-clip: text;
+  -webkit-text-fill-color: transparent;
+  animation: agent-shimmer 1.8s linear infinite;
+}
+
+.disable-animations .agent-shimmer-text {
+  animation: none;
+  color: var(--color-muted-foreground);
+  -webkit-text-fill-color: currentcolor;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .agent-shimmer-text {
+    animation: none;
+    color: var(--color-muted-foreground);
+    -webkit-text-fill-color: currentcolor;
+  }
+}
+
+/* Tailwind Preflight is disabled host-wide (PrimeVue + litegraph coexistence), so raw form
+   elements in the panel inherit UA chrome: a <button> gets the buttonface fill + 2px outset
+   border, a <textarea>/<input> gets its own border, font and padding. Re-apply Preflight's
+   normalization, scoped to the panel root and its teleported reka surfaces (dialogs,
+   dropdowns, drawer carry .agent-scope). :where() holds the selectors at zero specificity so
+   each element's own bg-* / border utilities still win. */
+@layer base {
+  :where(#agent-panel-root, .agent-scope)
+    :where(button, [type='button'], [type='reset'], [type='submit']) {
+    appearance: none;
+    background-color: transparent;
+    border: 0 solid;
+  }
+
+  :where(#agent-panel-root, .agent-scope) :where(textarea, input, select) {
+    appearance: none;
+    border: 0 solid;
+    background-color: transparent;
+    font: inherit;
+    color: inherit;
+  }
+}

src/workbench/extensions/agent/agentTheme.css

@@ -0,0 +1,24 @@
+@theme inline {
+  --color-agent-surface: var(--color-base-background);
+  --color-agent-surface-raised: var(--color-secondary-background);
+  --color-agent-surface-hover: var(--color-secondary-background-hover);
+  --color-agent-fg: var(--color-base-foreground);
+  --color-agent-fg-muted: var(--color-muted-foreground);
+  --color-agent-fg-subtle: var(--color-muted-foreground);
+  --color-agent-border: var(--color-component-node-border);
+  --color-agent-border-strong: var(--color-border-default);
+  --color-agent-accent: var(--color-primary-background);
+  /* accent-fg: text on the always-blue accent stays white in both themes; no host
+     on-primary token flips correctly here. Design-review item for FE-1187. */
+  --color-agent-accent-fg: #ffffff;
+  --color-agent-danger: var(--color-destructive-background);
+  --color-agent-success: var(--color-success-background);
+  --color-agent-pill: #303036;
+
+  --radius-agent: 0.75rem;
+}
+
+@theme {
+  --animate-agent-collapsible-down: agent-collapsible-down 200ms ease-out;
+  --animate-agent-collapsible-up: agent-collapsible-up 200ms ease-out;
+}

src/workbench/extensions/agent/components/agent/ActiveTabStrip.test.ts

@@ -0,0 +1,16 @@
+import { render, screen } from '@testing-library/vue'
+import { describe, expect, it } from 'vitest'
+
+import ActiveTabStrip from './ActiveTabStrip.vue'
+
+describe('ActiveTabStrip', () => {
+  it('shows the tab name, and nothing when there is no tab', async () => {
+    const { rerender } = render(ActiveTabStrip, {
+      props: { tab: { name: 'portrait.json' } }
+    })
+    expect(screen.getByText('portrait.json')).not.toBeNull()
+
+    await rerender({ tab: null })
+    expect(screen.queryByText('portrait.json')).toBeNull()
+  })
+})

src/workbench/extensions/agent/components/agent/ActiveTabStrip.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+export interface ActiveTab {
+  name: string
+}
+
+const { tab } = defineProps<{ tab: ActiveTab | null }>()
+</script>
+
+<template>
+  <span
+    v-if="tab"
+    class="text-agent-fg-muted flex min-w-0 items-center gap-1 text-xs"
+  >
+    <span class="icon-[lucide--panels-top-left] size-3.5 shrink-0" />
+    <span class="truncate">{{ tab.name }}</span>
+  </span>
+</template>

src/workbench/extensions/agent/components/agent/AgentPanel.vue

@@ -0,0 +1,189 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type { ActiveTab } from './ActiveTabStrip.vue'
+import type { ComposerAttachment } from '../../composables/agent/useComposer'
+import type { SelectedNode } from '../../composables/agent/useCanvasSelection'
+import type { ConflictChoice } from './safety/ConflictDialog.vue'
+import type { ConversationEntry } from '../../stores/agent/agentConversationStore'
+import type { HistoryGroups } from '../../stores/agent/agentChatHistoryStore'
+
+import ChatHistoryScreen from './ChatHistoryScreen.vue'
+import Composer from './Composer.vue'
+import ConversationView from './ConversationView.vue'
+import EmptyState from './EmptyState.vue'
+import PanelHeader from './PanelHeader.vue'
+import ConflictDialog from './safety/ConflictDialog.vue'
+
+const {
+  entries,
+  userName,
+  streaming = false,
+  submitting = false,
+  conflictOpen = false,
+  canAttach = false,
+  isMaximized = false,
+  selectionTags = [],
+  activeTab = null,
+  getMentionNodes = () => [],
+  historyGroups
+} = defineProps<{
+  entries: ConversationEntry[]
+  userName?: string
+  streaming?: boolean
+  submitting?: boolean
+  conflictOpen?: boolean
+  canAttach?: boolean
+  isMaximized?: boolean
+  selectionTags?: SelectedNode[]
+  activeTab?: ActiveTab | null
+  getMentionNodes?: () => SelectedNode[]
+  historyGroups: HistoryGroups
+}>()
+const emit = defineEmits<{
+  send: [text: string, attachments: ComposerAttachment[]]
+  stop: []
+  attach: []
+  removeTag: [id: string]
+  mentionPick: [node: SelectedNode]
+  feedback: [turnId: string, vote: 'up' | 'down' | null]
+  resolveConflict: [choice: ConflictChoice]
+  newChat: []
+  toggleSize: []
+  close: []
+  openHistory: []
+  selectHistory: [id: string]
+  deleteHistory: [id: string]
+  copyHistory: [id: string]
+}>()
+
+const showHistory = ref(false)
+
+function onNewChat(): void {
+  showHistory.value = false
+  emit('newChat')
+}
+function onOpenHistory(): void {
+  showHistory.value = true
+  emit('openHistory')
+}
+function onSelectHistory(id: string): void {
+  showHistory.value = false
+  emit('selectHistory', id)
+}
+
+const composerRef = ref<InstanceType<typeof Composer>>()
+
+const { t } = useI18n()
+
+const sessionTitle = computed(() => {
+  const firstUser = entries.find(
+    (entry): entry is Extract<ConversationEntry, { role: 'user' }> =>
+      entry.role === 'user'
+  )
+  return firstUser?.text.trim().slice(0, 60) || undefined
+})
+
+function addAttachment(attachment: ComposerAttachment): void {
+  composerRef.value?.addAttachment(attachment)
+}
+
+function updateAttachment(
+  id: string,
+  patch: Partial<ComposerAttachment>
+): void {
+  composerRef.value?.updateAttachment(id, patch)
+}
+
+function removeAttachment(id: string): void {
+  composerRef.value?.removeAttachment(id)
+}
+
+defineExpose({ addAttachment, updateAttachment, removeAttachment })
+</script>
+
+<template>
+  <section
+    class="bg-agent-surface text-agent-fg @container flex h-full flex-col overflow-hidden"
+  >
+    <PanelHeader
+      :is-maximized="isMaximized"
+      :active-tab="activeTab"
+      @new-chat="onNewChat"
+      @toggle-size="emit('toggleSize')"
+      @close="emit('close')"
+    />
+
+    <template v-if="showHistory">
+      <ChatHistoryScreen
+        :groups="historyGroups"
+        class="min-h-0 flex-1"
+        @back="showHistory = false"
+        @select="onSelectHistory"
+        @delete="emit('deleteHistory', $event)"
+        @copy-markdown="emit('copyHistory', $event)"
+      />
+    </template>
+
+    <template v-else>
+      <div class="flex shrink-0 items-center px-2 py-1.5">
+        <button
+          v-tooltip.bottom="{
+            value: t('agent.showChatHistory'),
+            showDelay: 500
+          }"
+          type="button"
+          class="text-agent-fg-muted hover:bg-agent-surface-hover flex h-6 cursor-pointer items-center gap-1 rounded-sm px-2 text-xs transition-colors"
+          @click="onOpenHistory"
+        >
+          <span class="icon-[lucide--align-justify] size-3.5 shrink-0" />
+          <span class="max-w-56 truncate">{{
+            sessionTitle || t('agent.newChatTitle')
+          }}</span>
+        </button>
+      </div>
+
+      <div class="min-h-0 flex-1">
+        <EmptyState
+          v-if="!entries.length"
+          :user-name="userName"
+          @insert="composerRef?.insert($event)"
+        />
+        <ConversationView
+          v-else
+          :entries="entries"
+          @feedback="(id, vote) => emit('feedback', id, vote)"
+        />
+      </div>
+    </template>
+
+    <template v-if="!showHistory">
+      <footer class="shrink-0 p-4">
+        <div class="mx-auto flex w-full max-w-[640px] flex-col gap-2.5">
+          <Composer
+            ref="composerRef"
+            :streaming="streaming"
+            :submitting="submitting"
+            :can-attach="canAttach"
+            :selection-tags="selectionTags"
+            :get-mention-nodes="getMentionNodes"
+            @send="(text, attachments) => emit('send', text, attachments)"
+            @stop="emit('stop')"
+            @attach="emit('attach')"
+            @remove-tag="emit('removeTag', $event)"
+            @mention-pick="emit('mentionPick', $event)"
+          />
+          <p class="text-agent-fg-muted my-0 text-center text-xs">
+            {{ t('agent.caption') }}
+          </p>
+        </div>
+      </footer>
+    </template>
+
+    <ConflictDialog
+      :open="conflictOpen"
+      @resolve="emit('resolveConflict', $event)"
+    />
+  </section>
+</template>

src/workbench/extensions/agent/components/agent/ChatHistoryScreen.vue

@@ -0,0 +1,103 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type {
+  ChatSession,
+  HistoryGroups
+} from '../../stores/agent/agentChatHistoryStore'
+
+const { groups } = defineProps<{ groups: HistoryGroups }>()
+const emit = defineEmits<{
+  back: []
+  select: [id: string]
+  delete: [id: string]
+  copyMarkdown: [id: string]
+}>()
+
+const { t } = useI18n()
+
+const sections = computed(() =>
+  (
+    [
+      ['current', t('agent.historyCurrent'), groups.current],
+      ['today', t('agent.historyToday'), groups.today],
+      ['yesterday', t('agent.historyYesterday'), groups.yesterday],
+      ['earlier', t('agent.historyEarlier'), groups.earlier]
+    ] as const
+  ).filter(([, , items]) => items.length > 0)
+)
+
+const isEmpty = computed(() => sections.value.length === 0)
+
+function pick(session: ChatSession): void {
+  emit('select', session.id)
+}
+</script>
+
+<template>
+  <div class="flex h-full flex-col overflow-hidden">
+    <div class="flex shrink-0 items-center px-2 py-1.5">
+      <button
+        v-tooltip.bottom="{ value: t('agent.backToChat'), showDelay: 500 }"
+        type="button"
+        class="text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg flex h-6 cursor-pointer items-center gap-1 rounded-sm px-2 text-xs transition-colors"
+        @click="emit('back')"
+      >
+        <span class="icon-[lucide--arrow-left] size-3.5 shrink-0" />
+        <span>{{ t('agent.history') }}</span>
+      </button>
+    </div>
+
+    <div class="min-h-0 flex-1 overflow-y-auto p-2">
+      <p
+        v-if="isEmpty"
+        class="text-agent-fg-muted px-2 py-8 text-center text-sm"
+      >
+        {{ t('agent.historyEmpty') }}
+      </p>
+
+      <section v-for="[key, label, items] in sections" :key="key" class="mb-3">
+        <p class="text-agent-fg-muted my-0 px-2 py-1 text-xs font-medium">
+          {{ label }}
+        </p>
+        <div
+          v-for="session in items"
+          :key="session.id"
+          class="group hover:bg-agent-surface-hover flex items-center gap-2 rounded-md px-2 py-1.5"
+        >
+          <button
+            type="button"
+            class="text-agent-fg flex min-w-0 flex-1 cursor-pointer items-center gap-2 text-left text-sm"
+            @click="pick(session)"
+          >
+            <span
+              class="text-agent-fg-muted icon-[lucide--circle-check] size-3.5 shrink-0"
+            />
+            <span class="truncate">{{
+              session.title || t('agent.untitledChat')
+            }}</span>
+          </button>
+          <div class="hidden shrink-0 items-center gap-0.5 group-hover:flex">
+            <button
+              type="button"
+              class="text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg flex cursor-pointer items-center justify-center rounded-sm p-0.5 transition-colors"
+              :aria-label="t('agent.copyMarkdown')"
+              @click="emit('copyMarkdown', session.id)"
+            >
+              <span class="icon-[lucide--copy] size-3.5" />
+            </button>
+            <button
+              type="button"
+              class="text-agent-fg-muted hover:text-agent-danger hover:bg-agent-surface-hover flex cursor-pointer items-center justify-center rounded-sm p-0.5 transition-colors"
+              :aria-label="t('agent.delete')"
+              @click="emit('delete', session.id)"
+            >
+              <span class="icon-[lucide--trash-2] size-3.5" />
+            </button>
+          </div>
+        </div>
+      </section>
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/Composer.test.ts

@@ -0,0 +1,59 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it } from 'vitest'
+import type { ComponentProps } from 'vue-component-type-helpers'
+
+import { i18n } from '@/i18n'
+
+import Composer from './Composer.vue'
+
+function mount(props: ComponentProps<typeof Composer> = {}) {
+  return render(Composer, { props, global: { plugins: [i18n] } })
+}
+
+describe('Composer', () => {
+  it('disables send when empty and enables once text is typed', async () => {
+    mount()
+    const send = screen.getByRole('button', { name: 'Send' })
+    expect(send).toBeDisabled()
+    await userEvent.type(screen.getByRole('textbox'), 'hello')
+    expect(send).toBeEnabled()
+  })
+
+  it('emits send with the trimmed text and clears the draft', async () => {
+    const { emitted } = mount()
+    const box = screen.getByRole('textbox')
+    await userEvent.type(box, '  make art  ')
+    await userEvent.click(screen.getByRole('button', { name: 'Send' }))
+    expect(emitted().send[0]).toEqual(['make art', []])
+    expect((box as HTMLTextAreaElement).value).toBe('')
+  })
+
+  it('sends on Enter but not on Shift+Enter', async () => {
+    const { emitted } = mount()
+    const box = screen.getByRole('textbox')
+    await userEvent.type(box, 'one{Shift>}{Enter}{/Shift}two')
+    expect(emitted().send).toBeUndefined()
+    await userEvent.type(box, '{Enter}')
+    expect(emitted().send).toHaveLength(1)
+  })
+
+  it('shows Stop while streaming and emits stop instead of send', async () => {
+    const { emitted } = mount({ streaming: true })
+    const stop = screen.getByRole('button', { name: 'Stop' })
+    await userEvent.click(stop)
+    expect(emitted().stop).toHaveLength(1)
+    expect(emitted().send).toBeUndefined()
+  })
+
+  it('hides the paperclip by default', () => {
+    mount()
+    expect(screen.queryByRole('button', { name: 'Attach a file' })).toBeNull()
+  })
+
+  it('emits attach when the paperclip is clicked and canAttach is set', async () => {
+    const { emitted } = mount({ canAttach: true })
+    await userEvent.click(screen.getByRole('button', { name: 'Attach a file' }))
+    expect(emitted().attach).toHaveLength(1)
+  })
+})

src/workbench/extensions/agent/components/agent/Composer.vue

@@ -0,0 +1,200 @@
+<script setup lang="ts">
+import {
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuPortal,
+  DropdownMenuRoot,
+  DropdownMenuTrigger
+} from 'reka-ui'
+import { ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import Textarea from '@/components/ui/textarea/Textarea.vue'
+import type { ComposerAttachment } from '../../composables/agent/useComposer'
+import { useComposer } from '../../composables/agent/useComposer'
+import type { SelectedNode } from '../../composables/agent/useCanvasSelection'
+import { cn } from '@comfyorg/tailwind-utils'
+
+import AttachmentChip from './composer/AttachmentChip.vue'
+
+const {
+  streaming = false,
+  submitting = false,
+  canAttach = false,
+  selectionTags = [],
+  getMentionNodes = () => []
+} = defineProps<{
+  streaming?: boolean
+  submitting?: boolean
+  canAttach?: boolean
+  selectionTags?: SelectedNode[]
+  getMentionNodes?: () => SelectedNode[]
+}>()
+const emit = defineEmits<{
+  send: [text: string, attachments: ComposerAttachment[]]
+  stop: []
+  attach: []
+  removeTag: [id: string]
+  mentionPick: [node: SelectedNode]
+}>()
+
+const mentionNodes = ref<SelectedNode[]>([])
+function onMentionOpen(open: boolean): void {
+  if (open) mentionNodes.value = getMentionNodes()
+}
+
+const { t } = useI18n()
+
+const composer = useComposer({
+  onSend: (text, attachments) => emit('send', text, attachments),
+  isStreaming: () => streaming,
+  onStop: () => emit('stop')
+})
+
+function onEnter(event: KeyboardEvent): void {
+  if (event.isComposing || event.shiftKey) return
+  event.preventDefault()
+  composer.submit()
+}
+
+defineExpose({
+  insert: composer.insert,
+  addAttachment: composer.addAttachment,
+  updateAttachment: composer.updateAttachment,
+  removeAttachment: composer.removeAttachment
+})
+</script>
+
+<template>
+  <div
+    class="border-agent-border-strong bg-agent-surface-raised focus-within:border-agent-fg-muted flex flex-col rounded-2xl border transition-colors"
+  >
+    <div v-if="selectionTags.length" class="flex flex-wrap gap-1.5 px-4 pt-3">
+      <span
+        v-for="tag in selectionTags"
+        :key="tag.id"
+        class="rounded-agent bg-agent-pill text-agent-fg inline-flex items-center gap-1.5 py-1 pr-2 pl-1.5 text-xs"
+      >
+        <span class="text-agent-fg-subtle icon-[lucide--at-sign] size-3.5" />
+        <span class="max-w-40 truncate">{{ tag.title }}</span>
+        <button
+          type="button"
+          :aria-label="t('agent.remove')"
+          class="text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg -my-1 -mr-1 flex size-5 cursor-pointer items-center justify-center rounded-full transition-colors"
+          @click="emit('removeTag', tag.id)"
+        >
+          <span class="icon-[lucide--x] size-3.5" />
+        </button>
+      </span>
+    </div>
+
+    <div
+      v-if="composer.attachments.value.length"
+      class="flex flex-wrap gap-1.5 px-4 pt-3"
+    >
+      <AttachmentChip
+        v-for="item in composer.attachments.value"
+        :key="item.id"
+        :name="item.name"
+        :preview-url="item.previewUrl"
+        :uploading="item.uploading"
+        @remove="composer.removeAttachment(item.id)"
+      />
+    </div>
+
+    <Textarea
+      v-model="composer.draft.value"
+      :placeholder="t('agent.placeholder')"
+      rows="1"
+      class="max-h-48 min-h-20 resize-none rounded-xl bg-transparent px-4 py-3 focus-visible:ring-0"
+      @keydown.enter="onEnter"
+    />
+
+    <div class="flex items-center justify-between px-3 py-2">
+      <div class="flex items-center gap-1">
+        <button
+          v-if="canAttach"
+          type="button"
+          :aria-label="t('agent.attach')"
+          class="rounded-agent text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg flex size-8 cursor-pointer items-center justify-center transition-colors"
+          @click="emit('attach')"
+        >
+          <span class="icon-[lucide--paperclip] size-4" />
+        </button>
+        <DropdownMenuRoot @update:open="onMentionOpen">
+          <DropdownMenuTrigger
+            :aria-label="t('agent.mention')"
+            class="rounded-agent text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg flex size-8 cursor-pointer items-center justify-center transition-colors"
+          >
+            <span class="icon-[lucide--at-sign] size-4" />
+          </DropdownMenuTrigger>
+          <DropdownMenuPortal>
+            <DropdownMenuContent
+              side="top"
+              align="start"
+              :side-offset="4"
+              class="rounded-agent border-agent-border bg-agent-surface-raised z-1100 max-h-64 w-64 overflow-y-auto border p-1 shadow-lg"
+            >
+              <DropdownMenuItem
+                v-for="node in mentionNodes"
+                :key="node.id"
+                class="text-agent-fg data-highlighted:bg-agent-surface-hover rounded-agent flex cursor-pointer items-center gap-1.5 px-2 py-1.5 text-xs outline-none"
+                @select="emit('mentionPick', node)"
+              >
+                <span class="truncate">{{ node.title }}</span>
+                <span class="text-agent-fg-subtle ml-auto shrink-0">
+                  #{{ node.id }}
+                </span>
+              </DropdownMenuItem>
+              <DropdownMenuItem
+                v-if="!mentionNodes.length"
+                disabled
+                class="text-agent-fg-subtle px-2 py-1.5 text-xs"
+              >
+                {{ t('agent.noNodesToMention') }}
+              </DropdownMenuItem>
+            </DropdownMenuContent>
+          </DropdownMenuPortal>
+        </DropdownMenuRoot>
+      </div>
+
+      <div class="flex items-center gap-1">
+        <button
+          type="button"
+          class="text-agent-fg-muted hover:bg-agent-surface-hover flex h-8 cursor-pointer items-center gap-1 rounded-sm px-2 text-xs transition-colors"
+          :aria-label="t('agent.modelAuto')"
+        >
+          <span>{{ t('agent.modelAuto') }}</span>
+          <span class="icon-[lucide--chevron-down] size-3" />
+        </button>
+        <button
+          type="button"
+          :aria-label="streaming ? t('agent.stop') : t('agent.send')"
+          :disabled="!streaming && !composer.canSend.value"
+          :class="
+            cn(
+              'flex size-8 items-center justify-center rounded-xl transition-colors',
+              streaming
+                ? 'bg-agent-surface-hover text-agent-fg hover:bg-agent-border cursor-pointer'
+                : 'bg-agent-fg text-agent-surface hover:bg-agent-fg/90 cursor-pointer disabled:cursor-not-allowed disabled:opacity-50'
+            )
+          "
+          @click="composer.submit"
+        >
+          <span
+            :class="
+              cn(
+                'size-4',
+                submitting
+                  ? 'icon-[lucide--loader-circle] animate-spin'
+                  : streaming
+                    ? 'icon-[lucide--square]'
+                    : 'icon-[lucide--arrow-up]'
+              )
+            "
+          />
+        </button>
+      </div>
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/ConversationView.test.ts

@@ -0,0 +1,123 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { createPinia, setActivePinia } from 'pinia'
+import { defineComponent } from 'vue'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+import type * as VueUse from '@vueuse/core'
+
+const intersectionCallbacks = vi.hoisted(
+  () => [] as ((entries: { isIntersecting: boolean }[]) => void)[]
+)
+vi.mock('@vueuse/core', async (importOriginal) => ({
+  ...(await importOriginal<typeof VueUse>()),
+  useIntersectionObserver: (
+    _target: unknown,
+    callback: (entries: { isIntersecting: boolean }[]) => void
+  ) => {
+    intersectionCallbacks.push(callback)
+    return { stop: () => {} }
+  }
+}))
+
+import { i18n } from '@/i18n'
+import type { TurnId } from '../../schemas/agentApiSchema'
+import { zAgentWsEvent } from '../../schemas/agentApiSchema'
+import type { AgentChatEvent } from '../../services/agent/agentEventTransport'
+import type { AssistantMessage } from '../../services/agent/agentMessageParts'
+import { useAgentConversationStore } from '../../stores/agent/agentConversationStore'
+
+import ConversationView from './ConversationView.vue'
+
+const T = 'msg-1' as TurnId
+const chat = (raw: unknown): AgentChatEvent =>
+  zAgentWsEvent.parse(raw) as AgentChatEvent
+const thinking = (id: string, delta: string) =>
+  chat({
+    type: 'agent_thinking',
+    data: { delta, message_id: id, thread_id: 'th' }
+  })
+const delta = (id: string, text: string) =>
+  chat({
+    type: 'agent_message_delta',
+    data: { delta: text, message_id: id, thread_id: 'th' }
+  })
+const toolCall = (id: string, name: string, status: string) =>
+  chat({
+    type: 'agent_tool_call',
+    data: { tool_name: name, status, args: [], message_id: id, thread_id: 'th' }
+  })
+const done = (id: string) =>
+  chat({
+    type: 'agent_message_done',
+    data: { message_id: id, thread_id: 'th', usage: null }
+  })
+
+const Harness = defineComponent({
+  components: { ConversationView },
+  setup() {
+    const store = useAgentConversationStore()
+    return { store }
+  },
+  template: `<ConversationView :entries="store.entries" user-name="Ada" />`
+})
+
+function mountHarness() {
+  const pinia = createPinia()
+  setActivePinia(pinia)
+  const utils = render(Harness, { global: { plugins: [pinia, i18n] } })
+  return { store: useAgentConversationStore(), ...utils }
+}
+
+describe('ConversationView', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia())
+    intersectionCallbacks.length = 0
+  })
+
+  it('wire-driven v1 turn renders user pill, spinner, reasoning-free text, tool group', async () => {
+    const { store } = mountHarness()
+    store.recordUser(T, 'make a cat')
+    store.startTurn(T)
+
+    store.ingest(thinking('msg-1', 'pondering'))
+    expect(await screen.findByText('Thinking...')).toBeInTheDocument()
+
+    store.ingest(delta('msg-1', 'Here is a **cat**'))
+    store.ingest(toolCall('msg-1', 'add_node', 'ok'))
+    store.ingest(done('msg-1'))
+
+    expect(await screen.findByText('make a cat')).toBeInTheDocument()
+    expect(screen.getByText('Ran 1 tool call')).toBeInTheDocument()
+    expect(screen.getByText('cat', { selector: 'strong' })).toBeInTheDocument()
+    expect(store.entries.at(-1)).toMatchObject({
+      role: 'assistant',
+      streaming: false
+    })
+  })
+
+  it('shows a scroll-to-latest pill when scrolled up and returns to bottom on click', async () => {
+    const assistant: AssistantMessage = {
+      id: 'msg-1' as TurnId,
+      role: 'assistant',
+      parts: [{ type: 'text', text: 'hello', state: 'done' }],
+      streaming: false,
+      thinking: false
+    }
+    const scrollIntoView = vi.fn()
+    Element.prototype.scrollIntoView = scrollIntoView
+
+    render(ConversationView, {
+      props: { entries: [assistant] },
+      global: { plugins: [i18n] }
+    })
+
+    expect(screen.queryByText('Latest')).not.toBeInTheDocument()
+
+    for (const cb of intersectionCallbacks) cb([{ isIntersecting: false }])
+    const pill = await screen.findByRole('button', { name: 'Latest' })
+
+    await userEvent.click(pill)
+    expect(scrollIntoView).toHaveBeenCalled()
+  })
+})

src/workbench/extensions/agent/components/agent/ConversationView.vue

@@ -0,0 +1,82 @@
+<script setup lang="ts">
+import { useIntersectionObserver } from '@vueuse/core'
+import { computed, nextTick, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type { ConversationEntry } from '../../stores/agent/agentConversationStore'
+
+import AgentMessage from './message/AgentMessage.vue'
+import UserMessage from './message/UserMessage.vue'
+
+const { entries } = defineProps<{
+  entries: ConversationEntry[]
+}>()
+const emit = defineEmits<{
+  feedback: [turnId: string, vote: 'up' | 'down' | null]
+}>()
+
+const { t } = useI18n()
+
+const bottom = ref<HTMLElement>()
+const atBottom = ref(true)
+
+useIntersectionObserver(bottom, ([entry]) => {
+  atBottom.value = entry?.isIntersecting ?? true
+})
+
+function scrollToLatest(): void {
+  bottom.value?.scrollIntoView({ block: 'end' })
+}
+
+const latestContentSignal = computed(() => {
+  const last = entries.at(-1)
+  if (!last) return '0'
+  const size = 'parts' in last ? JSON.stringify(last.parts).length : 0
+  return `${entries.length}:${size}`
+})
+
+watch(
+  latestContentSignal,
+  async () => {
+    if (!atBottom.value) return
+    await nextTick()
+    scrollToLatest()
+  },
+  { flush: 'post' }
+)
+</script>
+
+<template>
+  <div class="relative h-full">
+    <div class="h-full overflow-y-auto">
+      <div class="mx-auto max-w-[640px] p-4">
+        <div class="flex flex-col gap-4">
+          <template v-for="entry in entries" :key="`${entry.role}-${entry.id}`">
+            <UserMessage
+              v-if="entry.role === 'user'"
+              :text="entry.text"
+              :attachments="entry.attachments"
+              :tags="entry.tags"
+            />
+            <AgentMessage
+              v-else
+              :message="entry"
+              @feedback="emit('feedback', entry.id, $event)"
+            />
+          </template>
+          <div ref="bottom" />
+        </div>
+      </div>
+    </div>
+
+    <button
+      v-if="!atBottom"
+      type="button"
+      class="rounded-agent border-agent-border bg-agent-surface-raised text-agent-fg-muted hover:text-agent-fg absolute bottom-3 left-1/2 flex -translate-x-1/2 items-center gap-1 border px-3 py-1.5 text-xs shadow-md transition-colors"
+      @click="scrollToLatest"
+    >
+      <span class="icon-[lucide--arrow-down] size-3.5" />
+      {{ t('agent.latest') }}
+    </button>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/EmptyState.vue

@@ -0,0 +1,68 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import { cn } from '@comfyorg/tailwind-utils'
+
+const { userName } = defineProps<{ userName?: string }>()
+const emit = defineEmits<{ insert: [text: string] }>()
+
+const { t, tm } = useI18n()
+
+const prompts = computed(() => tm('agent.suggestedPrompts') as string[])
+
+const promptIcons = [
+  'icon-[lucide--lightbulb]',
+  'icon-[lucide--list]',
+  'icon-[lucide--search]',
+  'icon-[lucide--message-circle-warning]',
+  'icon-[lucide--workflow]'
+]
+</script>
+
+<template>
+  <div class="flex h-full flex-col p-4">
+    <div
+      class="flex min-h-0 flex-1 flex-col items-center justify-center gap-4 p-6 text-center"
+    >
+      <div
+        class="mb-2 flex size-12 items-center justify-center rounded-xl border border-plum-600 bg-ink-700"
+      >
+        <span
+          class="icon-[comfy--comfy-c] size-6 text-brand-yellow drop-shadow-[0_0_12px_currentColor]"
+          aria-hidden="true"
+        />
+      </div>
+      <div
+        class="text-agent-fg flex max-w-sm flex-col items-center gap-2 text-base/snug font-semibold tracking-tight @min-[570px]:text-2xl/snug"
+      >
+        <p class="my-0">
+          {{ t('agent.greeting', { name: userName ?? t('agent.friend') }) }}
+        </p>
+        <p class="my-0">
+          {{ t('agent.greetingQuestion') }}
+        </p>
+      </div>
+    </div>
+    <div class="flex shrink-0 flex-wrap gap-2 @min-[460px]:justify-center">
+      <button
+        v-for="(prompt, index) in prompts"
+        :key="index"
+        type="button"
+        class="bg-agent-surface-raised text-agent-fg hover:bg-agent-surface-hover focus-visible:ring-agent-accent flex h-8 w-full cursor-pointer items-center justify-start gap-2 rounded-full px-3 text-sm whitespace-nowrap transition-colors focus-visible:ring-2 focus-visible:outline-none @min-[460px]:w-auto"
+        @click="emit('insert', prompt)"
+      >
+        <span
+          :class="
+            cn(
+              'text-agent-fg-muted size-3 shrink-0',
+              promptIcons[index] ?? 'icon-[lucide--sparkles]'
+            )
+          "
+          aria-hidden="true"
+        />
+        <span class="truncate">{{ prompt }}</span>
+      </button>
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/OnboardingCoach.vue

@@ -0,0 +1,84 @@
+<script setup lang="ts">
+import { onKeyStroke, useWindowSize } from '@vueuse/core'
+import { ref, watchEffect } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import Button from '@/components/ui/button/Button.vue'
+import type { CoachStep } from '../../composables/agent/useOnboarding'
+import { useOnboarding } from '../../composables/agent/useOnboarding'
+
+const { step, storageKey } = defineProps<{
+  step: CoachStep
+  storageKey?: string
+}>()
+
+const { t } = useI18n()
+const { active, finish } = useOnboarding(storageKey)
+
+onKeyStroke('Escape', () => {
+  if (active.value) finish()
+})
+
+const { width, height } = useWindowSize()
+const CARD_W = 256
+const CARD_H = 160
+const MARGIN = 8
+
+const cardStyle = ref<Record<string, string> | null>(null)
+
+watchEffect(
+  () => {
+    cardStyle.value = null
+    if (!active.value) return
+    const target = document.querySelector(step.target)
+    if (!target) return
+    const rect = target.getBoundingClientRect()
+    const left = Math.min(
+      Math.max(MARGIN, rect.left),
+      Math.max(MARGIN, width.value - CARD_W - MARGIN)
+    )
+    const top = Math.min(
+      Math.max(MARGIN, rect.bottom + MARGIN),
+      Math.max(MARGIN, height.value - CARD_H - MARGIN)
+    )
+    cardStyle.value = { top: `${top}px`, left: `${left}px` }
+  },
+  { flush: 'post' }
+)
+</script>
+
+<template>
+  <div
+    v-if="active && cardStyle"
+    role="dialog"
+    aria-modal="true"
+    :aria-label="step.title"
+    class="fixed inset-0 z-50"
+  >
+    <div class="absolute inset-0 bg-black/40" />
+    <div
+      :style="cardStyle"
+      class="rounded-agent border-agent-border bg-agent-surface-raised text-agent-fg absolute w-64 border p-3 shadow-xl"
+    >
+      <p class="text-sm font-semibold">{{ step.title }}</p>
+      <p class="text-agent-fg-muted mt-1 text-xs">{{ step.body }}</p>
+      <div class="mt-3 flex justify-end gap-2">
+        <Button
+          variant="muted-textonly"
+          size="md"
+          class="hover:text-agent-fg focus-visible:ring-agent-accent rounded-xl px-3 text-sm focus-visible:ring-2"
+          @click="finish"
+          >{{ t('agent.skip') }}</Button
+        >
+        <Button
+          variant="primary"
+          size="md"
+          class="text-agent-accent-fg hover:bg-agent-accent/90 focus-visible:ring-agent-accent rounded-xl px-3 text-sm focus-visible:ring-2"
+          @click="finish"
+        >
+          {{ t('agent.gotIt') }}
+        </Button>
+      </div>
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/PanelHeader.vue

@@ -0,0 +1,80 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import { cn } from '@comfyorg/tailwind-utils'
+
+import Button from '@/components/ui/button/Button.vue'
+import type { ActiveTab } from './ActiveTabStrip.vue'
+import ActiveTabStrip from './ActiveTabStrip.vue'
+
+const { isMaximized = false, activeTab = null } = defineProps<{
+  isMaximized?: boolean
+  activeTab?: ActiveTab | null
+}>()
+
+const emit = defineEmits<{
+  newChat: []
+  toggleSize: []
+  close: []
+}>()
+
+const { t } = useI18n()
+
+const sizeToggleIcon = computed(() =>
+  isMaximized ? 'icon-[lucide--minimize-2]' : 'icon-[lucide--maximize-2]'
+)
+const sizeToggleLabel = computed(() =>
+  isMaximized ? t('agent.minimize') : t('agent.maximize')
+)
+</script>
+
+<template>
+  <header
+    class="border-agent-border flex h-12 shrink-0 items-center gap-2 border-b px-4"
+  >
+    <h1 class="text-agent-fg my-0 text-sm font-normal whitespace-nowrap">
+      {{ t('agent.title') }}
+    </h1>
+    <span
+      class="border-agent-border-strong text-agent-fg-muted shrink-0 rounded-full border px-2 py-0.5 text-xs"
+    >
+      {{ t('agent.alpha') }}
+    </span>
+
+    <ActiveTabStrip :tab="activeTab" />
+
+    <div class="ml-auto flex items-center gap-1">
+      <Button
+        v-tooltip.bottom="{ value: t('agent.newChat'), showDelay: 300 }"
+        variant="muted-textonly"
+        size="icon"
+        class="hover:text-agent-fg focus-visible:ring-agent-accent rounded-xl focus-visible:ring-2"
+        :aria-label="t('agent.newChat')"
+        @click="emit('newChat')"
+      >
+        <span class="icon-[lucide--message-circle-plus] size-4" />
+      </Button>
+      <Button
+        v-tooltip.bottom="{ value: sizeToggleLabel, showDelay: 300 }"
+        variant="muted-textonly"
+        size="icon"
+        class="hover:text-agent-fg focus-visible:ring-agent-accent rounded-xl focus-visible:ring-2"
+        :aria-label="sizeToggleLabel"
+        @click="emit('toggleSize')"
+      >
+        <span :class="cn(sizeToggleIcon, 'size-4')" />
+      </Button>
+      <Button
+        v-tooltip.bottom="{ value: t('agent.close'), showDelay: 300 }"
+        variant="muted-textonly"
+        size="icon"
+        class="hover:text-agent-fg focus-visible:ring-agent-accent rounded-xl focus-visible:ring-2"
+        :aria-label="t('agent.close')"
+        @click="emit('close')"
+      >
+        <span class="icon-[lucide--x] size-4" />
+      </Button>
+    </div>
+  </header>
+</template>

src/workbench/extensions/agent/components/agent/composer/AttachmentChip.vue

@@ -0,0 +1,44 @@
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+
+const {
+  name,
+  previewUrl,
+  uploading = false
+} = defineProps<{
+  name: string
+  previewUrl?: string
+  uploading?: boolean
+}>()
+const emit = defineEmits<{ remove: [] }>()
+
+const { t } = useI18n()
+</script>
+
+<template>
+  <span
+    class="rounded-agent bg-agent-pill text-agent-fg inline-flex items-center gap-1.5 py-1 pr-2 pl-1 text-xs"
+  >
+    <span
+      v-if="uploading"
+      :aria-label="t('agent.uploading')"
+      class="text-agent-fg-subtle icon-[lucide--loader-circle] size-4 animate-spin"
+    />
+    <img
+      v-else-if="previewUrl"
+      :src="previewUrl"
+      :alt="name"
+      class="size-5 rounded-sm object-cover"
+    />
+    <span v-else class="text-agent-fg-subtle icon-[lucide--paperclip] size-4" />
+    <span class="max-w-32 truncate">{{ name }}</span>
+    <button
+      type="button"
+      :aria-label="t('agent.remove')"
+      class="text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg -my-1 -mr-1 flex size-5 cursor-pointer items-center justify-center rounded-full transition-colors"
+      @click="emit('remove')"
+    >
+      <span class="icon-[lucide--x] size-3.5" />
+    </button>
+  </span>
+</template>

src/workbench/extensions/agent/components/agent/message/AgentMessage.vue

@@ -0,0 +1,108 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type {
+  AssistantMessage,
+  NoticePart,
+  TextPart,
+  ToolPart
+} from '../../../services/agent/agentMessageParts'
+import { cn } from '@comfyorg/tailwind-utils'
+
+import MarkdownStream from './MarkdownStream.vue'
+import MessageFeedback from './MessageFeedback.vue'
+import ToolCallGroup from './ToolCallGroup.vue'
+
+const { message } = defineProps<{ message: AssistantMessage }>()
+const emit = defineEmits<{ feedback: [vote: 'up' | 'down' | null] }>()
+
+const { t } = useI18n()
+
+type Group =
+  | { kind: 'text'; part: TextPart }
+  | { kind: 'notice'; part: NoticePart }
+  | { kind: 'tools'; parts: ToolPart[] }
+
+const groups = computed<Group[]>(() => {
+  const out: Group[] = []
+  for (const part of message.parts) {
+    const prev = out.at(-1)
+    if (part.type === 'tool') {
+      if (prev?.kind === 'tools') prev.parts.push(part)
+      else out.push({ kind: 'tools', parts: [part] })
+    } else if (part.type === 'text') {
+      out.push({ kind: 'text', part })
+    } else {
+      out.push({ kind: 'notice', part })
+    }
+  }
+  return out
+})
+
+const plainText = computed(() =>
+  message.parts
+    .filter((part): part is TextPart => part.type === 'text')
+    .map((part) => part.text)
+    .join('\n\n')
+)
+
+const showActions = computed(
+  () => !message.streaming && plainText.value.length > 0
+)
+
+const raw = ref(false)
+</script>
+
+<template>
+  <div class="space-y-1.5">
+    <div
+      v-if="message.thinking || (message.streaming && !message.parts.length)"
+      class="text-agent-fg-muted flex items-center gap-1.5 py-1 text-sm"
+    >
+      <span class="icon-[lucide--brain] size-3.5 shrink-0" />
+      <span class="agent-shimmer-text">{{ t('agent.thinking') }}</span>
+    </div>
+
+    <template v-for="(group, index) in groups" :key="index">
+      <MarkdownStream
+        v-if="group.kind === 'text'"
+        :text="group.part.text"
+        :raw="raw"
+      />
+      <ToolCallGroup v-else-if="group.kind === 'tools'" :tools="group.parts" />
+      <div
+        v-else
+        :class="
+          cn(
+            'rounded-agent flex items-start gap-2 border px-3 py-2 text-sm',
+            group.part.level === 'error'
+              ? 'border-agent-danger/40 text-agent-danger'
+              : 'border-agent-border text-agent-fg-muted'
+          )
+        "
+      >
+        <span class="mt-0.5 icon-[lucide--triangle-alert] size-4 shrink-0" />
+        <span>{{ group.part.text }}</span>
+      </div>
+    </template>
+
+    <div v-if="showActions" class="flex items-center gap-1">
+      <MessageFeedback :text="plainText" @feedback="emit('feedback', $event)" />
+      <button
+        type="button"
+        :aria-label="t('agent.toggleRaw')"
+        :aria-pressed="raw"
+        :class="
+          cn(
+            'rounded-agent text-agent-fg-subtle hover:bg-agent-surface-hover hover:text-agent-fg flex size-7 items-center justify-center transition-colors',
+            raw && 'text-agent-fg'
+          )
+        "
+        @click="raw = !raw"
+      >
+        <span class="icon-[lucide--code] size-4" />
+      </button>
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/message/CodeBlock.vue

@@ -0,0 +1,49 @@
+<script setup lang="ts">
+import { useClipboard } from '@vueuse/core'
+import { useI18n } from 'vue-i18n'
+
+import { cn } from '@comfyorg/tailwind-utils'
+
+const { code, lang = 'text' } = defineProps<{
+  code: string
+  lang?: string
+}>()
+
+const { t } = useI18n()
+const { copy, copied } = useClipboard({ copiedDuring: 2000, legacy: true })
+</script>
+
+<template>
+  <div
+    class="group border-agent-border-strong relative my-2 overflow-hidden rounded-md border"
+  >
+    <div
+      class="border-agent-border-strong bg-agent-surface-hover flex items-center justify-between border-b px-3 py-1.5"
+    >
+      <span
+        class="text-agent-fg-subtle flex items-center gap-1.5 font-mono text-xs"
+      >
+        <span class="icon-[lucide--file-code] size-3.5" />
+        <span class="text-agent-fg font-medium">{{ lang }}</span>
+      </span>
+      <button
+        type="button"
+        class="text-agent-fg-subtle hover:bg-agent-surface hover:text-agent-fg border-agent-border-strong flex items-center gap-1 rounded-sm border px-2 py-0.5 font-mono text-xs transition-colors"
+        @click="copy(code)"
+      >
+        <span
+          :class="
+            cn(
+              'size-3.5',
+              copied ? 'icon-[lucide--check]' : 'icon-[lucide--copy]'
+            )
+          "
+        />
+        {{ copied ? t('agent.copied') : t('agent.copy') }}
+      </button>
+    </div>
+    <pre
+      class="text-agent-fg overflow-x-auto p-4 font-mono text-sm"
+    ><code>{{ code }}</code></pre>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/message/MarkdownStream.test.ts

@@ -0,0 +1,99 @@
+// @vitest-environment jsdom
+import { render, screen } from '@testing-library/vue'
+import { describe, expect, it } from 'vitest'
+
+import { i18n } from '@/i18n'
+
+import MarkdownStream from './MarkdownStream.vue'
+
+describe('MarkdownStream', () => {
+  it('renders markdown prose', () => {
+    render(MarkdownStream, { props: { text: '**bold**' } })
+    expect(screen.getByText('bold', { selector: 'strong' })).toBeInTheDocument()
+  })
+
+  it('strips a script tag (XSS guard)', () => {
+    const { html } = render(MarkdownStream, {
+      props: { text: 'hi <script>alert(1)</script> there' }
+    })
+    expect(html()).not.toContain('<script')
+    expect(screen.getByText(/hi/)).toBeInTheDocument()
+  })
+
+  it('opens links in a new tab with rel=noopener', () => {
+    render(MarkdownStream, { props: { text: '[docs](https://example.com)' } })
+    const link = screen.getByRole('link', { name: 'docs' })
+    expect(link).toHaveAttribute('target', '_blank')
+    expect(link).toHaveAttribute('rel', 'noopener noreferrer')
+  })
+
+  it('drops a javascript: url', () => {
+    const { html } = render(MarkdownStream, {
+      props: { text: '[x](javascript:alert(1))' }
+    })
+    expect(html()).not.toContain('javascript:')
+  })
+
+  it('renders a fenced block as a framed code block with its language and a copy button', () => {
+    render(MarkdownStream, {
+      props: { text: 'before\n```python\nprint("hi")\n```\nafter' },
+      global: { plugins: [i18n] }
+    })
+    expect(screen.getByText('python')).toBeInTheDocument()
+    expect(
+      screen.getByText('print("hi")', { selector: 'code' })
+    ).toBeInTheDocument()
+    expect(screen.getByRole('button', { name: /copy/i })).toBeInTheDocument()
+    expect(screen.getByText('before')).toBeInTheDocument()
+    expect(screen.getByText('after')).toBeInTheDocument()
+  })
+
+  it('handles a 4-backtick fence containing a 3-backtick fence', () => {
+    render(MarkdownStream, {
+      props: { text: '````md\n```js\ncode\n```\n````' },
+      global: { plugins: [i18n] }
+    })
+    expect(screen.getByText(/```js/, { selector: 'code' })).toBeInTheDocument()
+    expect(screen.getByText('md')).toBeInTheDocument()
+  })
+
+  it('leaves an inline triple-backtick span mid-sentence as prose', () => {
+    render(MarkdownStream, {
+      props: { text: 'use ```npm i``` to install' }
+    })
+    expect(screen.getByText('npm i', { selector: 'code' })).toBeInTheDocument()
+    expect(screen.queryByRole('button', { name: /copy/i })).toBeNull()
+  })
+
+  it('keeps a 4-space-indented block as prose-rendered code, not a framed block', () => {
+    render(MarkdownStream, {
+      props: { text: 'steps:\n\n    npm install\n\ndone' },
+      global: { plugins: [i18n] }
+    })
+    expect(
+      screen.getByText('npm install', { selector: 'code' })
+    ).toBeInTheDocument()
+    expect(screen.queryByRole('button', { name: /copy/i })).toBeNull()
+  })
+
+  it('labels a fence by the first word of its info string', () => {
+    render(MarkdownStream, {
+      props: { text: '```python title=x\nprint("hi")\n```' },
+      global: { plugins: [i18n] }
+    })
+    expect(screen.getByText('python')).toBeInTheDocument()
+    expect(screen.queryByText(/title=x/)).not.toBeInTheDocument()
+  })
+
+  it('labels a bare fence with no language as text', () => {
+    render(MarkdownStream, {
+      props: { text: '```\nplain body\n```' },
+      global: { plugins: [i18n] }
+    })
+    expect(screen.getByText('text')).toBeInTheDocument()
+    expect(
+      screen.getByText('plain body', { selector: 'code' })
+    ).toBeInTheDocument()
+    expect(screen.getByRole('button', { name: /copy/i })).toBeInTheDocument()
+  })
+})

src/workbench/extensions/agent/components/agent/message/MarkdownStream.vue

@@ -0,0 +1,82 @@
+<script setup lang="ts">
+import { marked } from 'marked'
+import { computed } from 'vue'
+
+import { cn } from '@comfyorg/tailwind-utils'
+import { renderMarkdownToHtml } from '@/utils/markdownRendererUtil'
+
+import CodeBlock from './CodeBlock.vue'
+
+const { text, raw = false } = defineProps<{
+  text: string
+  raw?: boolean
+}>()
+
+interface ProseSegment {
+  type: 'prose'
+  html: string
+}
+interface CodeSegment {
+  type: 'code'
+  code: string
+  lang: string
+}
+type Segment = ProseSegment | CodeSegment
+
+const segments = computed<Segment[]>(() => {
+  const out: Segment[] = []
+  let prose = ''
+  const flushProse = () => {
+    if (!prose) return
+    out.push({ type: 'prose', html: renderMarkdownToHtml(prose) })
+    prose = ''
+  }
+  for (const token of marked.lexer(text)) {
+    if (token.type === 'code' && token.codeBlockStyle !== 'indented') {
+      flushProse()
+      out.push({
+        type: 'code',
+        code: token.text,
+        lang: token.lang?.split(/\s+/)[0] || 'text'
+      })
+    } else {
+      prose += token.raw
+    }
+  }
+  flushProse()
+  return out
+})
+
+const proseClass = cn(
+  'text-agent-fg text-sm/relaxed',
+  '[&_a]:text-agent-accent [&_a]:cursor-pointer [&_a]:underline',
+  '[&_p]:my-0 [&_p]:pt-1 [&_strong]:font-semibold',
+  '[&_h1]:mt-0 [&_h1]:pt-4 [&_h1]:pb-2 [&_h1]:text-2xl [&_h1]:font-semibold',
+  '[&_h2]:pt-3.5 [&_h2]:pb-1.5 [&_h2]:text-base [&_h2]:font-semibold [&_h3]:pt-2 [&_h3]:font-semibold',
+  '[&_ol]:my-0 [&_ol]:list-decimal [&_ol]:pt-1 [&_ol]:pb-2 [&_ol]:pl-5',
+  '[&_ul]:my-0 [&_ul]:list-disc [&_ul]:pt-1 [&_ul]:pb-2 [&_ul]:pl-5',
+  '[&_:not(pre)>code]:bg-agent-surface-hover [&_:not(pre)>code]:border-agent-border-strong [&_:not(pre)>code]:rounded-sm [&_:not(pre)>code]:border [&_:not(pre)>code]:px-1.5 [&_:not(pre)>code]:py-0.5 [&_:not(pre)>code]:text-[0.875em]',
+  '[&_blockquote]:border-agent-border-strong [&_blockquote]:text-agent-fg-muted [&_blockquote]:my-2 [&_blockquote]:border-l-[3px] [&_blockquote]:py-1.5 [&_blockquote]:pl-3.5',
+  '[&_table]:bg-agent-surface-raised [&_table]:my-2 [&_table]:w-full [&_table]:border-collapse [&_table]:overflow-hidden [&_table]:rounded-lg',
+  '[&_th]:border-agent-border-strong [&_th]:bg-agent-surface-hover [&_th]:border-b [&_th]:px-4 [&_th]:py-2.5 [&_th]:text-left [&_th]:font-semibold',
+  '[&_td]:border-agent-border-strong [&_td]:border-b [&_td]:px-4 [&_td]:py-2.5'
+)
+</script>
+
+<template>
+  <pre
+    v-if="raw"
+    class="rounded-agent bg-agent-surface text-agent-fg overflow-x-auto p-3 text-xs whitespace-pre-wrap"
+    >{{ text }}</pre
+  >
+  <div v-else>
+    <template v-for="(segment, index) in segments" :key="index">
+      <CodeBlock
+        v-if="segment.type === 'code'"
+        :code="segment.code"
+        :lang="segment.lang"
+      />
+      <div v-else :class="proseClass" v-html="segment.html" />
+    </template>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/message/MessageFeedback.vue

@@ -0,0 +1,68 @@
+<script setup lang="ts">
+import { useClipboard } from '@vueuse/core'
+import { ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import { cn } from '@comfyorg/tailwind-utils'
+
+const { text } = defineProps<{ text: string }>()
+const emit = defineEmits<{ feedback: [vote: 'up' | 'down' | null] }>()
+
+const { t } = useI18n()
+const { copy, copied } = useClipboard({ copiedDuring: 2000, legacy: true })
+
+const vote = ref<'up' | 'down' | null>(null)
+
+function setVote(next: 'up' | 'down'): void {
+  vote.value = vote.value === next ? null : next
+  emit('feedback', vote.value)
+}
+</script>
+
+<template>
+  <div class="text-agent-fg-subtle flex items-center gap-0.5">
+    <button
+      type="button"
+      :aria-label="t('agent.helpful')"
+      :aria-pressed="vote === 'up'"
+      :class="
+        cn(
+          'rounded-agent hover:bg-agent-surface-hover hover:text-agent-fg flex size-6 items-center justify-center transition-colors',
+          vote === 'up' && 'text-agent-accent'
+        )
+      "
+      @click="setVote('up')"
+    >
+      <span class="icon-[lucide--thumbs-up] size-3.5" />
+    </button>
+    <button
+      type="button"
+      :aria-label="t('agent.notHelpful')"
+      :aria-pressed="vote === 'down'"
+      :class="
+        cn(
+          'rounded-agent hover:bg-agent-surface-hover hover:text-agent-fg flex size-6 items-center justify-center transition-colors',
+          vote === 'down' && 'text-agent-danger'
+        )
+      "
+      @click="setVote('down')"
+    >
+      <span class="icon-[lucide--thumbs-down] size-3.5" />
+    </button>
+    <button
+      type="button"
+      :aria-label="copied ? t('agent.copied') : t('agent.copy')"
+      class="rounded-agent hover:bg-agent-surface-hover hover:text-agent-fg flex size-6 items-center justify-center transition-colors"
+      @click="copy(text)"
+    >
+      <span
+        :class="
+          cn(
+            'size-3.5',
+            copied ? 'icon-[lucide--check]' : 'icon-[lucide--copy]'
+          )
+        "
+      />
+    </button>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/message/ToolCallCard.vue

@@ -0,0 +1,61 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type { PartState } from '../../../services/agent/agentMessageParts'
+import { cn } from '@comfyorg/tailwind-utils'
+
+const {
+  name,
+  state,
+  ok,
+  count = 1
+} = defineProps<{
+  name: string
+  state: PartState
+  ok?: boolean
+  count?: number
+}>()
+
+const { t } = useI18n()
+
+const FRIENDLY_TOOL_KEYS: Record<string, string> = {
+  new_tab: 'agent.toolOpenedNewTab',
+  switch_tab: 'agent.toolSwitchedTabs',
+  remember: 'agent.toolSavedPreference',
+  forget: 'agent.toolForgotPreference'
+}
+
+const friendlyKey = computed(() =>
+  Object.hasOwn(FRIENDLY_TOOL_KEYS, name) ? FRIENDLY_TOOL_KEYS[name] : undefined
+)
+
+const label = computed(() =>
+  friendlyKey.value === undefined ? name : t(friendlyKey.value)
+)
+
+const glyph = computed(() => {
+  if (state === 'streaming') return 'animate-spin icon-[lucide--loader-circle]'
+  return ok === false
+    ? 'icon-[lucide--circle-x]'
+    : 'icon-[lucide--circle-check]'
+})
+
+const glyphColor = computed(() => {
+  if (state === 'streaming') return 'text-agent-fg-subtle'
+  return ok === false ? 'text-agent-danger' : 'text-agent-success'
+})
+</script>
+
+<template>
+  <div class="text-agent-fg flex items-center gap-2 px-3 py-1.5 text-sm">
+    <span :class="cn('size-4 shrink-0', glyph, glyphColor)" />
+    <span
+      :class="cn('truncate text-xs', friendlyKey === undefined && 'font-mono')"
+      >{{ label }}</span
+    >
+    <span v-if="count > 1" class="text-agent-fg-subtle text-xs"
+      >×{{ count }}</span
+    >
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/message/ToolCallGroup.test.ts

@@ -0,0 +1,118 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it } from 'vitest'
+
+import { i18n } from '@/i18n'
+import type { TurnId } from '../../../schemas/agentApiSchema'
+import type {
+  AssistantMessage,
+  ToolPart
+} from '../../../services/agent/agentMessageParts'
+
+import AgentMessage from './AgentMessage.vue'
+import ToolCallGroup from './ToolCallGroup.vue'
+
+function tool(
+  callId: string,
+  name: string,
+  state: ToolPart['state'],
+  ok?: boolean
+): ToolPart {
+  return { type: 'tool', callId, name, state, ok }
+}
+
+describe('ToolCallGroup', () => {
+  it('maps tab tools to friendly labels and renders unknown tools by raw name', () => {
+    render(ToolCallGroup, {
+      props: {
+        tools: [
+          tool('c1', 'new_tab', 'done', true),
+          tool('c2', 'switch_tab', 'done', true),
+          tool('c3', 'add_node', 'streaming'),
+          tool('c4', 'constructor', 'done', true),
+          tool('c5', 'remember', 'done', true),
+          tool('c6', 'forget', 'done', true)
+        ]
+      },
+      global: { plugins: [i18n] }
+    })
+
+    expect(screen.getByText('Opened a new tab')).toBeInTheDocument()
+    expect(screen.getByText('Switched tabs')).toBeInTheDocument()
+    expect(screen.getByText('add_node')).toBeInTheDocument()
+    expect(screen.getByText('constructor')).toBeInTheDocument()
+    expect(screen.getByText('Saved a preference')).toBeInTheDocument()
+    expect(screen.getByText('Forgot a preference')).toBeInTheDocument()
+  })
+
+  it('renders open with the row visible while a call streams', () => {
+    render(ToolCallGroup, {
+      props: { tools: [tool('c1', 'add_node', 'streaming')] },
+      global: { plugins: [i18n] }
+    })
+
+    expect(screen.getByText('Ran 1 tool call')).toBeInTheDocument()
+    expect(screen.getByText('add_node')).toBeInTheDocument()
+  })
+
+  it('stays open and folds a same-name re-run into the counted row', () => {
+    render(ToolCallGroup, {
+      props: {
+        tools: [
+          tool('c1', 'add_node', 'done', true),
+          tool('c2', 'add_node', 'streaming')
+        ]
+      },
+      global: { plugins: [i18n] }
+    })
+
+    expect(screen.getByText('Ran 2 tool calls')).toBeInTheDocument()
+    expect(screen.getAllByText('add_node')).toHaveLength(1)
+    expect(screen.getByText('×2')).toBeInTheDocument()
+  })
+
+  it('reopens on a failure and folds it into the counted row', async () => {
+    const { rerender } = render(ToolCallGroup, {
+      props: { tools: [tool('c1', 'add_node', 'done', true)] },
+      global: { plugins: [i18n] }
+    })
+
+    expect(screen.queryByText('add_node')).not.toBeInTheDocument()
+
+    await rerender({
+      tools: [
+        tool('c1', 'add_node', 'done', true),
+        tool('c2', 'add_node', 'done', false)
+      ]
+    })
+
+    expect(await screen.findByText('add_node')).toBeInTheDocument()
+    expect(screen.getByText('×2')).toBeInTheDocument()
+  })
+})
+
+describe('AgentMessage tool grouping', () => {
+  it('groups adjacent tool parts into one pluralized card that opens on click', async () => {
+    const message: AssistantMessage = {
+      id: 'msg-1' as TurnId,
+      role: 'assistant',
+      parts: [
+        tool('c1', 'add_node', 'done', true),
+        tool('c2', 'add_node', 'done', true)
+      ],
+      streaming: false,
+      thinking: false
+    }
+    render(AgentMessage, { props: { message }, global: { plugins: [i18n] } })
+
+    expect(screen.getByText('Ran 2 tool calls')).toBeInTheDocument()
+    expect(screen.queryByText('add_node')).not.toBeInTheDocument()
+
+    await userEvent.click(
+      screen.getByRole('button', { name: /ran 2 tool calls/i })
+    )
+
+    expect(await screen.findAllByText('add_node')).toHaveLength(1)
+    expect(screen.getByText('×2')).toBeInTheDocument()
+  })
+})

src/workbench/extensions/agent/components/agent/message/ToolCallGroup.vue

@@ -0,0 +1,96 @@
+<script setup lang="ts">
+import {
+  CollapsibleContent,
+  CollapsibleRoot,
+  CollapsibleTrigger
+} from 'reka-ui'
+import { computed, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import type { ToolPart } from '../../../services/agent/agentMessageParts'
+import { cn } from '@comfyorg/tailwind-utils'
+
+import ToolCallCard from './ToolCallCard.vue'
+
+const { tools } = defineProps<{ tools: ToolPart[] }>()
+
+const { t } = useI18n()
+
+interface Row {
+  name: string
+  state: ToolPart['state']
+  ok?: boolean
+  count: number
+}
+const rows = computed<Row[]>(() => {
+  const out: Row[] = []
+  for (const tool of tools) {
+    const prev = out.at(-1)
+    if (prev && prev.name === tool.name) {
+      prev.count += 1
+      if (tool.state === 'streaming') prev.state = 'streaming'
+      if (tool.ok === false) prev.ok = false
+    } else {
+      out.push({
+        name: tool.name,
+        state: tool.state,
+        ok: tool.ok,
+        count: 1
+      })
+    }
+  }
+  return out
+})
+
+const running = computed(() => tools.some((tool) => tool.state === 'streaming'))
+const failed = computed(() =>
+  tools.some((tool) => tool.state === 'done' && tool.ok === false)
+)
+
+const open = ref(true)
+watch(
+  () => running.value || failed.value,
+  (stayOpen) => {
+    open.value = stayOpen
+  },
+  { immediate: true }
+)
+</script>
+
+<template>
+  <CollapsibleRoot v-model:open="open">
+    <CollapsibleTrigger
+      class="group text-agent-fg-muted hover:bg-agent-surface-hover hover:text-agent-fg flex h-8 w-full cursor-pointer items-center gap-2 rounded-md px-2 text-sm transition-colors"
+    >
+      <span
+        v-if="running"
+        class="text-agent-fg-subtle icon-[lucide--loader-circle] size-4 shrink-0 animate-spin"
+      />
+      <span
+        v-else-if="failed"
+        class="text-agent-danger icon-[lucide--circle-x] size-4 shrink-0"
+      />
+      <span v-else class="icon-[lucide--wrench] size-4 shrink-0" />
+      <span class="flex-1 text-left">{{
+        t('agent.ranToolCalls', tools.length)
+      }}</span>
+      <span
+        class="icon-[lucide--chevron-down] size-4 shrink-0 transition-transform group-data-[state=open]:rotate-180"
+      />
+    </CollapsibleTrigger>
+    <CollapsibleContent
+      class="data-[state=closed]:animate-agent-collapsible-up data-[state=open]:animate-agent-collapsible-down overflow-hidden"
+    >
+      <div :class="cn('flex flex-col gap-0.5 pt-1 pl-2')">
+        <ToolCallCard
+          v-for="(row, index) in rows"
+          :key="index"
+          :name="row.name"
+          :state="row.state"
+          :ok="row.ok"
+          :count="row.count"
+        />
+      </div>
+    </CollapsibleContent>
+  </CollapsibleRoot>
+</template>

src/workbench/extensions/agent/components/agent/message/UserMessage.test.ts

@@ -0,0 +1,31 @@
+import { render, screen } from '@testing-library/vue'
+import { describe, expect, it } from 'vitest'
+
+import UserMessage from './UserMessage.vue'
+
+describe('UserMessage', () => {
+  it('renders a caption-only placeholder tile for a preview-less attachment', () => {
+    render(UserMessage, {
+      props: { text: '', attachments: [{ name: 'clip.bin' }] }
+    })
+
+    expect(screen.getByText('clip.bin')).toBeInTheDocument()
+    expect(screen.queryByRole('img')).not.toBeInTheDocument()
+  })
+
+  it('renders thumbnails for previewable attachments above the text pill', () => {
+    render(UserMessage, {
+      props: {
+        text: 'use these',
+        attachments: [
+          { name: 'a.png', previewUrl: 'blob:a' },
+          { name: 'b.png', previewUrl: 'blob:b' }
+        ]
+      }
+    })
+
+    expect(screen.getByAltText('a.png')).toBeInTheDocument()
+    expect(screen.getByAltText('b.png')).toBeInTheDocument()
+    expect(screen.getByText('use these')).toBeInTheDocument()
+  })
+})

src/workbench/extensions/agent/components/agent/message/UserMessage.vue

@@ -0,0 +1,60 @@
+<script setup lang="ts">
+import type { UserAttachment } from '../../../stores/agent/agentConversationStore'
+
+const {
+  text,
+  attachments = [],
+  tags = []
+} = defineProps<{
+  text: string
+  attachments?: UserAttachment[]
+  tags?: string[]
+}>()
+</script>
+
+<template>
+  <div class="flex flex-col items-end gap-1.5">
+    <div v-if="tags.length" class="flex flex-wrap justify-end gap-1">
+      <span
+        v-for="(tag, index) in tags"
+        :key="`${tag}:${index}`"
+        class="rounded-agent bg-agent-pill text-agent-fg-muted inline-flex items-center gap-1 px-1.5 py-0.5 text-xs"
+      >
+        <span class="icon-[lucide--at-sign] size-3" />
+        {{ tag }}
+      </span>
+    </div>
+    <div
+      v-if="attachments.length"
+      class="grid w-56 max-w-full grid-cols-2 gap-1.5"
+    >
+      <figure
+        v-for="(item, index) in attachments"
+        :key="`${item.name}:${index}`"
+        class="m-0"
+      >
+        <img
+          v-if="item.previewUrl"
+          :src="item.previewUrl"
+          :alt="item.name"
+          class="aspect-square w-full rounded-lg object-cover"
+        />
+        <div
+          v-else
+          class="bg-agent-surface-raised flex aspect-square w-full items-center justify-center rounded-lg"
+        >
+          <span class="text-agent-fg-subtle icon-[lucide--image] size-6" />
+        </div>
+        <figcaption class="text-agent-fg-muted mt-0.5 truncate text-xs">
+          {{ item.name }}
+        </figcaption>
+      </figure>
+    </div>
+    <div
+      v-if="text"
+      class="bg-agent-surface-raised text-agent-fg w-fit max-w-full rounded-lg px-4 py-3 text-xs whitespace-pre-wrap"
+    >
+      {{ text }}
+    </div>
+  </div>
+</template>

src/workbench/extensions/agent/components/agent/safety/ConflictDialog.vue

@@ -0,0 +1,112 @@
+<script setup lang="ts">
+import {
+  DialogContent,
+  DialogDescription,
+  DialogOverlay,
+  DialogPortal,
+  DialogRoot,
+  DialogTitle,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuPortal,
+  DropdownMenuRoot,
+  DropdownMenuTrigger
+} from 'reka-ui'
+import { useI18n } from 'vue-i18n'
+
+import Button from '@/components/ui/button/Button.vue'
+
+export type ConflictChoice = 'agent' | 'mine' | 'newtab' | 'cancel'
+
+const { open } = defineProps<{ open: boolean }>()
+const emit = defineEmits<{ resolve: [choice: ConflictChoice] }>()
+
+const { t } = useI18n()
+
+function choose(choice: ConflictChoice): void {
+  emit('resolve', choice)
+}
+</script>
+
+<template>
+  <DialogRoot :open="open">
+    <DialogPortal>
+      <DialogOverlay class="fixed inset-0 z-50 bg-black/60" />
+      <DialogContent
+        class="agent-scope rounded-agent border-agent-border bg-agent-surface-raised text-agent-fg fixed top-1/2 left-1/2 z-50 w-full max-w-md -translate-1/2 space-y-3 border p-5 shadow-xl focus:outline-none"
+      >
+        <div class="flex items-start justify-between gap-2">
+          <DialogTitle class="text-agent-fg my-0 text-sm font-semibold">
+            {{ t('agent.conflictTitle') }}
+          </DialogTitle>
+          <button
+            type="button"
+            :aria-label="t('g.close')"
+            class="text-agent-fg-subtle hover:text-agent-fg flex size-5 cursor-pointer items-center justify-center"
+            @click="choose('cancel')"
+          >
+            <span class="icon-[lucide--x] size-3.5" />
+          </button>
+        </div>
+        <DialogDescription class="text-agent-fg-muted my-0 text-xs">
+          {{ t('agent.conflictBody') }}
+        </DialogDescription>
+        <div class="flex items-center justify-end gap-2">
+          <Button
+            variant="muted-textonly"
+            size="md"
+            class="hover:text-agent-fg focus-visible:ring-agent-accent rounded-xl px-3 text-sm focus-visible:ring-2"
+            @click="choose('cancel')"
+          >
+            {{ t('g.cancel') }}
+          </Button>
+          <Button
+            variant="textonly"
+            size="md"
+            class="border-agent-border focus-visible:ring-agent-accent rounded-xl border border-solid px-3 text-sm focus-visible:ring-2"
+            @click="choose('mine')"
+          >
+            {{ t('agent.keepMine') }}
+          </Button>
+          <div class="flex">
+            <Button
+              variant="primary"
+              size="md"
+              class="text-agent-accent-fg hover:bg-agent-accent/90 focus-visible:ring-agent-accent rounded-l-xl rounded-r-none px-3 text-sm focus-visible:ring-2"
+              @click="choose('agent')"
+            >
+              {{ t('agent.acceptAgent') }}
+            </Button>
+            <DropdownMenuRoot>
+              <DropdownMenuTrigger as-child>
+                <Button
+                  variant="primary"
+                  size="md"
+                  class="border-agent-surface/30 text-agent-accent-fg hover:bg-agent-accent/90 focus-visible:ring-agent-accent w-6 rounded-l-none rounded-r-xl border-l border-solid px-0 text-sm focus-visible:ring-2"
+                  :aria-label="t('agent.moreApplyOptions')"
+                >
+                  <span class="icon-[lucide--chevron-down] size-3.5" />
+                </Button>
+              </DropdownMenuTrigger>
+              <DropdownMenuPortal>
+                <DropdownMenuContent
+                  side="bottom"
+                  align="end"
+                  :side-offset="4"
+                  class="rounded-agent border-agent-border bg-agent-surface-raised z-1100 border p-1 shadow-lg"
+                >
+                  <DropdownMenuItem
+                    class="text-agent-fg data-highlighted:bg-agent-surface-hover rounded-agent cursor-pointer px-2 py-1.5 text-xs outline-none"
+                    @select="choose('newtab')"
+                  >
+                    {{ t('agent.openNewTab') }}
+                  </DropdownMenuItem>
+                </DropdownMenuContent>
+              </DropdownMenuPortal>
+            </DropdownMenuRoot>
+          </div>
+        </div>
+      </DialogContent>
+    </DialogPortal>
+  </DialogRoot>
+</template>

src/workbench/extensions/agent/composables/agent/useAgentFeatureGate.test.ts

@@ -0,0 +1,83 @@
+import { describe, expect, it, vi } from 'vitest'
+
+import {
+  AGENT_PANEL_FLAG,
+  createPostHogFlagSource
+} from './useAgentFeatureGate'
+import type { PostHogLike } from './useAgentFeatureGate'
+
+function fakePostHog(initial: boolean | undefined): {
+  posthog: PostHogLike
+  setFlag: (value: boolean | undefined) => void
+} {
+  let value = initial
+  let listener: (() => void) | undefined
+  return {
+    posthog: {
+      isFeatureEnabled: () => value,
+      onFeatureFlags: (fn) => {
+        listener = fn
+        return () => {
+          listener = undefined
+        }
+      }
+    },
+    setFlag: (next) => {
+      value = next
+      listener?.()
+    }
+  }
+}
+
+describe('createPostHogFlagSource', () => {
+  it('maps an unloaded posthog flag (undefined) to false (fail closed)', () => {
+    const { posthog } = fakePostHog(undefined)
+    expect(createPostHogFlagSource(posthog).isEnabled()).toBe(false)
+  })
+
+  it('notifies onChange listeners and reflects flag flips', () => {
+    const { posthog, setFlag } = fakePostHog(undefined)
+    const source = createPostHogFlagSource(posthog)
+    const onChange = vi.fn()
+    source.onChange?.(onChange)
+
+    setFlag(true)
+    expect(onChange).toHaveBeenCalledTimes(1)
+    expect(source.isEnabled()).toBe(true)
+
+    setFlag(false)
+    expect(source.isEnabled()).toBe(false)
+  })
+
+  it('unsubscribing stops further notifications', () => {
+    const { posthog, setFlag } = fakePostHog(undefined)
+    const source = createPostHogFlagSource(posthog)
+    const onChange = vi.fn()
+    const unsubscribe = source.onChange?.(onChange)
+
+    unsubscribe?.()
+    setFlag(true)
+    expect(onChange).not.toHaveBeenCalled()
+  })
+
+  it('tolerates a void-returning onFeatureFlags', () => {
+    const posthog: PostHogLike = {
+      isFeatureEnabled: () => true,
+      onFeatureFlags: vi.fn()
+    }
+    const source = createPostHogFlagSource(posthog)
+    const unsubscribe = source.onChange?.(() => {})
+    expect(source.isEnabled()).toBe(true)
+    expect(() => unsubscribe?.()).not.toThrow()
+  })
+
+  it('queries the agent flag by default', () => {
+    const isFeatureEnabled = vi.fn(() => true)
+    const source = createPostHogFlagSource({
+      isFeatureEnabled,
+      onFeatureFlags: () => {}
+    })
+    expect(source.isEnabled()).toBe(true)
+    expect(isFeatureEnabled).toHaveBeenCalledWith(AGENT_PANEL_FLAG)
+  })
+})

src/workbench/extensions/agent/composables/agent/useAgentFeatureGate.ts

@@ -0,0 +1,24 @@
+export const AGENT_PANEL_FLAG = 'agent-in-app-experience'
+
+export interface AgentFlagSource {
+  isEnabled(): boolean
+  onChange?(listener: () => void): () => void
+}
+
+export interface PostHogLike {
+  isFeatureEnabled(flag: string): boolean | undefined
+  onFeatureFlags(listener: () => void): (() => void) | void
+}
+
+export function createPostHogFlagSource(
+  posthog: PostHogLike,
+  flag: string = AGENT_PANEL_FLAG
+): AgentFlagSource {
+  return {
+    isEnabled: () => posthog.isFeatureEnabled(flag) === true,
+    onChange: (listener) => {
+      const unsubscribe = posthog.onFeatureFlags(listener)
+      return typeof unsubscribe === 'function' ? unsubscribe : () => {}
+    }
+  }
+}

src/workbench/extensions/agent/composables/agent/useAgentSession.ts

@@ -0,0 +1,371 @@
+import { computed, ref } from 'vue'
+
+import { i18n } from '@/i18n'
+import type { AgentActiveTabData, TurnId } from '../../schemas/agentApiSchema'
+import { isAgentEvent, parseAgentWsEvent } from '../../schemas/agentApiSchema'
+import { AgentApiError } from '../../services/agent/agentRestClient'
+import type {
+  AgentRestClient,
+  DraftUpload,
+  OpenTabsSnapshot
+} from '../../services/agent/agentRestClient'
+import { useAgentConversationStore } from '../../stores/agent/agentConversationStore'
+import { useAgentDraftStore } from '../../stores/agent/agentDraftStore'
+
+export interface AgentEventSource {
+  subscribe(listener: (raw: unknown) => void): () => void
+  onStatus?(listener: (live: boolean) => void): () => void
+}
+
+export interface SessionNotice {
+  level: 'error'
+  text: string
+}
+
+interface SentAttachment {
+  ref: string
+  name: string
+  previewUrl?: string
+}
+
+interface SentTag {
+  id: string
+  title: string
+}
+
+export interface WorkflowTurnContext {
+  id: string
+  tabPath: string
+}
+
+export interface AgentSessionDeps {
+  rest: AgentRestClient
+  events: AgentEventSource
+  workflow?: {
+    current(): WorkflowTurnContext | undefined
+    adopted(
+      workflowId: string,
+      sent: WorkflowTurnContext | undefined,
+      uploaded: boolean
+    ): void
+    prepare?(): Promise<void>
+    snapshot?(): DraftUpload | undefined
+    uploadSkipped?(): void
+    tabs?(): OpenTabsSnapshot | undefined
+    activeTab?(data: AgentActiveTabData): void
+  }
+}
+
+const THREAD_STORAGE_KEY = 'Comfy.Agent.ThreadId'
+const PREPARE_TIMEOUT_MS = 3000
+
+export function useAgentSession(deps: AgentSessionDeps) {
+  const { rest, events, workflow } = deps
+
+  const conversationStore = useAgentConversationStore()
+  const draftStore = useAgentDraftStore()
+
+  const notices = ref<SessionNotice[]>([])
+  let resyncing = false
+  const sending = ref(false)
+
+  let localErrorCount = 0
+  function nextLocalErrorId(): TurnId {
+    return `local-error-${++localErrorCount}` as TurnId
+  }
+
+  let unsubscribe: (() => void) | null = null
+  let unsubscribeStatus: (() => void) | null = null
+
+  function pushError(text: string): void {
+    notices.value.push({ level: 'error', text })
+  }
+
+  async function resyncDraft(): Promise<void> {
+    const id = draftStore.workflowId
+    if (id === null || resyncing) return
+    resyncing = true
+    try {
+      const snapshot = await rest.getDraft(id)
+      if (draftStore.workflowId === id) draftStore.adoptSnapshot(snapshot)
+    } catch (error) {
+      if (error instanceof AgentApiError) {
+        if (error.status === 404) return
+        pushError(error.message)
+        return
+      }
+      pushError(error instanceof Error ? error.message : String(error))
+    } finally {
+      resyncing = false
+    }
+  }
+
+  function start(): void {
+    unsubscribe = events.subscribe(onRaw)
+    if (events.onStatus) unsubscribeStatus = events.onStatus(onStatus)
+    const surviving = conversationStore.threadId
+    if (surviving !== null) {
+      const generation = ++loadGeneration
+      void hydrateFromServer(surviving, () => generation === loadGeneration)
+      return
+    }
+    if (conversationStore.messages.length === 0) {
+      const stored = localStorage.getItem(THREAD_STORAGE_KEY)
+      if (stored !== null) {
+        const generation = ++loadGeneration
+        conversationStore.setThreadId(stored)
+        void hydrateFromServer(stored, () => generation === loadGeneration)
+      }
+    }
+  }
+
+  async function hydrateFromServer(
+    threadId: string,
+    isCurrent: () => boolean = () => true
+  ): Promise<boolean> {
+    try {
+      const history = await rest.getMessages(threadId)
+      if (conversationStore.threadId !== threadId || !isCurrent()) return false
+      conversationStore.hydrate(history)
+      return true
+    } catch (error) {
+      if (!isCurrent()) return false
+      if (error instanceof AgentApiError && error.status === 404) {
+        if (conversationStore.threadId === threadId)
+          conversationStore.setThreadId(null)
+        localStorage.removeItem(THREAD_STORAGE_KEY)
+        return false
+      }
+      pushError(error instanceof Error ? error.message : String(error))
+      return false
+    }
+  }
+
+  function stop(): void {
+    unsubscribe?.()
+    unsubscribeStatus?.()
+    unsubscribe = null
+    unsubscribeStatus = null
+    conversationStore.abortActiveTurn()
+    conversationStore.dropBackgroundTurns()
+  }
+
+  async function sendMessage(
+    text: string,
+    attachments?: SentAttachment[],
+    tags?: SentTag[]
+  ): Promise<boolean> {
+    if (sending.value) {
+      conversationStore.recordFailedSend(
+        nextLocalErrorId(),
+        text,
+        i18n.global.t('agent.sendBusy')
+      )
+      return false
+    }
+    sending.value = true
+    if (workflow?.prepare)
+      await Promise.race([
+        workflow.prepare().catch(() => undefined),
+        new Promise<void>((resolve) => setTimeout(resolve, PREPARE_TIMEOUT_MS))
+      ])
+    const wfContext = workflow?.current()
+    const upload = workflow?.snapshot?.()
+    const tabs = workflow?.tabs?.()
+    function buildInput(draft: DraftUpload | undefined) {
+      return {
+        content: text,
+        tabs,
+        selection:
+          tags !== undefined && tags.length > 0
+            ? { node_ids: tags.map((tag) => tag.id) }
+            : undefined,
+        attachments: attachments?.map((attachment) => attachment.ref),
+        draft
+      }
+    }
+    async function post(threadId: string, draft: DraftUpload | undefined) {
+      const input = buildInput(draft)
+      return rest.postMessage(
+        threadId,
+        wfContext ? { ...input, workflowId: wfContext.id } : input
+      )
+    }
+    let uploaded = upload !== undefined
+    async function postTurn(threadId: string) {
+      try {
+        return await post(threadId, upload)
+      } catch (error) {
+        if (!(error instanceof AgentApiError)) throw error
+        const serverVersion = (error.body as { version?: unknown } | null)
+          ?.version
+        if (
+          error.status === 409 &&
+          upload !== undefined &&
+          typeof serverVersion === 'number'
+        ) {
+          return await post(threadId, { ...upload, version: serverVersion })
+        }
+        if (upload !== undefined && error.status >= 500) {
+          console.warn(
+            '[agent] draft upload rejected by the server, sending without it',
+            error.message
+          )
+          const ack = await post(threadId, undefined)
+          uploaded = false
+          workflow?.uploadSkipped?.()
+          return ack
+        }
+        throw error
+      }
+    }
+    try {
+      const ack = await postTurn(conversationStore.threadId ?? 'new')
+      conversationStore.setThreadId(ack.thread_id)
+      localStorage.setItem(THREAD_STORAGE_KEY, ack.thread_id)
+      if (ack.workflow_id !== undefined) {
+        draftStore.bind(ack.workflow_id)
+        workflow?.adopted(ack.workflow_id, wfContext, uploaded)
+      }
+      const turnId = ack.message_id as TurnId
+      conversationStore.recordUser(
+        turnId,
+        text,
+        attachments?.map(({ name, previewUrl }) => ({ name, previewUrl })),
+        tags?.map((tag) => tag.title)
+      )
+      conversationStore.startTurn(turnId)
+      return true
+    } catch (error) {
+      const message =
+        error instanceof AgentApiError
+          ? error.message
+          : error instanceof Error
+            ? error.message
+            : String(error)
+      conversationStore.recordFailedSend(
+        nextLocalErrorId(),
+        text,
+        `${i18n.global.t('agent.sendFailed')}: ${message}`
+      )
+      return false
+    } finally {
+      sending.value = false
+    }
+  }
+
+  async function stopTurn(): Promise<void> {
+    const threadId = conversationStore.threadId
+    const turnId = conversationStore.activeTurnId
+    if (threadId === null || turnId === null) return
+    try {
+      await rest.cancelMessage(threadId, turnId)
+    } catch (error) {
+      if (error instanceof AgentApiError) {
+        if (error.status === 409) return
+        pushError(error.message)
+        return
+      }
+      pushError(error instanceof Error ? error.message : String(error))
+    }
+  }
+
+  let loadGeneration = 0
+
+  function newChat(): void {
+    loadGeneration++
+    conversationStore.stashActiveTurn()
+    conversationStore.reset()
+    draftStore.reset()
+    localStorage.removeItem(THREAD_STORAGE_KEY)
+  }
+
+  function listThreads() {
+    return rest.listThreads()
+  }
+
+  async function loadThread(threadId: string): Promise<void> {
+    const generation = ++loadGeneration
+    conversationStore.stashActiveTurn()
+    draftStore.reset()
+    conversationStore.setThreadId(threadId)
+    localStorage.setItem(THREAD_STORAGE_KEY, threadId)
+    const hydrated = await hydrateFromServer(
+      threadId,
+      () => generation === loadGeneration
+    )
+    if (hydrated && generation === loadGeneration)
+      conversationStore.resumeBackgroundTurn()
+  }
+
+  function onRaw(raw: unknown): void {
+    if (typeof raw !== 'object' || raw === null) return
+    const type = (raw as { type?: unknown }).type
+    if (typeof type !== 'string' || !isAgentEvent(type)) return
+    const parsed = parseAgentWsEvent(raw)
+    if (!parsed.success) {
+      const messageId = (raw as { data?: { message_id?: unknown } }).data
+        ?.message_id
+      if (type === 'agent_message_done') {
+        if (
+          typeof messageId !== 'string' ||
+          messageId === conversationStore.activeTurnId
+        ) {
+          conversationStore.abortActiveTurn()
+          pushError(i18n.global.t('agent.malformedEvent'))
+        } else {
+          conversationStore.settleBackgroundTurn(messageId)
+        }
+      }
+      console.warn('[agent] dropping malformed agent event', parsed.error)
+      return
+    }
+    const event = parsed.data
+    switch (event.type) {
+      case 'draft_patch':
+        if (
+          event.data.thread_id === undefined ||
+          event.data.thread_id === conversationStore.threadId
+        )
+          draftStore.applyPatch(event.data)
+        return
+      case 'draft_version':
+        if (draftStore.checkHeartbeat(event.data) === 'behind')
+          void resyncDraft()
+        return
+      case 'agent_active_tab':
+        if (
+          event.data.thread_id === undefined ||
+          event.data.thread_id === conversationStore.threadId
+        )
+          workflow?.activeTab?.(event.data)
+        return
+      default:
+        conversationStore.ingest(event)
+    }
+  }
+
+  function onStatus(live: boolean): void {
+    if (live) {
+      void resyncDraft()
+      return
+    }
+    conversationStore.abortActiveTurn()
+    conversationStore.dropBackgroundTurns()
+  }
+
+  return {
+    start,
+    stop,
+    sendMessage,
+    stopTurn,
+    newChat,
+    listThreads,
+    loadThread,
+    entries: computed(() => conversationStore.entries),
+    status: computed(() => conversationStore.status),
+    isStreaming: computed(() => conversationStore.isStreaming),
+    notices: computed(() => notices.value),
+    threadId: computed(() => conversationStore.threadId)
+  }
+}

src/workbench/extensions/agent/composables/agent/useAttachment.test.ts

@@ -0,0 +1,118 @@
+import { describe, expect, it, vi } from 'vitest'
+
+import type { ComposerAttachment } from './useComposer'
+import { MAX_ATTACHMENT_BYTES, useAttachment } from './useAttachment'
+
+function fileOfSize(name: string, size: number): File {
+  const file = new File(['x'], name, { type: 'image/png' })
+  Object.defineProperty(file, 'size', { value: size })
+  return file
+}
+
+function chipRegistry() {
+  const chips: ComposerAttachment[] = []
+  return {
+    chips,
+    stage: (attachment: ComposerAttachment) => chips.push(attachment),
+    update: (id: string, patch: Partial<ComposerAttachment>) => {
+      const index = chips.findIndex((chip) => chip.id === id)
+      if (index >= 0) chips[index] = { ...chips[index], ...patch }
+    },
+    remove: (id: string) => {
+      const index = chips.findIndex((chip) => chip.id === id)
+      if (index >= 0) chips.splice(index, 1)
+    }
+  }
+}
+
+describe('useAttachment', () => {
+  it('rejects files over 20MB before staging or uploading', async () => {
+    const upload = vi.fn()
+    const onError = vi.fn()
+    const registry = chipRegistry()
+    const { addFiles } = useAttachment({ upload, onError, ...registry })
+
+    await addFiles([fileOfSize('huge.png', MAX_ATTACHMENT_BYTES + 1)])
+
+    expect(registry.chips).toEqual([])
+    expect(upload).not.toHaveBeenCalled()
+    expect(onError).toHaveBeenCalledOnce()
+    expect(onError).toHaveBeenCalledWith('huge.png is larger than 20MB')
+  })
+
+  it('stages an uploading chip immediately, then settles it with the server ref', async () => {
+    let resolveUpload: (result: { ref: string }) => void = () => {}
+    const upload = vi.fn(
+      () =>
+        new Promise<{ ref: string }>((resolve) => {
+          resolveUpload = resolve
+        })
+    )
+    const registry = chipRegistry()
+    const { addFiles } = useAttachment({ upload, ...registry })
+
+    const batch = addFiles([fileOfSize('cat.png', 1024)])
+
+    expect(registry.chips).toHaveLength(1)
+    expect(registry.chips[0]).toMatchObject({
+      name: 'cat.png',
+      ref: '',
+      uploading: true
+    })
+    expect(registry.chips[0].previewUrl).toBeTruthy()
+
+    resolveUpload({ ref: 'uploaded_cat.png' })
+    await batch
+    expect(registry.chips[0]).toMatchObject({
+      ref: 'uploaded_cat.png',
+      uploading: false
+    })
+  })
+
+  it('removes the chip and surfaces the error when the upload fails', async () => {
+    const upload = vi.fn().mockRejectedValue(new Error('network down'))
+    const onError = vi.fn()
+    const registry = chipRegistry()
+    const { addFiles } = useAttachment({ upload, onError, ...registry })
+
+    await addFiles([fileOfSize('cat.png', 1024)])
+
+    expect(registry.chips).toEqual([])
+    expect(onError).toHaveBeenCalledOnce()
+  })
+
+  it('keeps earlier settled chips and continues the batch when one upload fails', async () => {
+    const upload = vi
+      .fn()
+      .mockResolvedValueOnce({ ref: 'a.png' })
+      .mockRejectedValueOnce(new Error('boom'))
+      .mockResolvedValueOnce({ ref: 'c.png' })
+    const onError = vi.fn()
+    const registry = chipRegistry()
+    const { addFiles } = useAttachment({ upload, onError, ...registry })
+
+    await addFiles([
+      fileOfSize('a.png', 10),
+      fileOfSize('b.png', 10),
+      fileOfSize('c.png', 10)
+    ])
+
+    expect(registry.chips.map((chip) => chip.ref)).toEqual(['a.png', 'c.png'])
+    expect(registry.chips.every((chip) => chip.uploading === false)).toBe(true)
+    expect(onError).toHaveBeenCalledWith('b.png could not be uploaded')
+  })
+
+  it('calls preventDefault before doing any work on drop', async () => {
+    const upload = vi.fn().mockResolvedValue({ ref: 'r' })
+    const registry = chipRegistry()
+    const { onDrop } = useAttachment({ upload, ...registry })
+    const preventDefault = vi.fn()
+    const event = {
+      preventDefault,
+      dataTransfer: { files: [] as unknown as FileList }
+    } as unknown as DragEvent
+
+    await onDrop(event)
+    expect(preventDefault).toHaveBeenCalledOnce()
+  })
+})

src/workbench/extensions/agent/composables/agent/useAttachment.ts

@@ -0,0 +1,63 @@
+import { i18n } from '@/i18n'
+import type { ComposerAttachment } from './useComposer'
+
+export const MAX_ATTACHMENT_BYTES = 20 * 1024 * 1024
+const MAX_ATTACHMENT_LABEL = `${MAX_ATTACHMENT_BYTES / 1024 / 1024}MB`
+
+interface UploadResult {
+  ref: string
+  url?: string
+}
+
+export interface UseAttachmentOptions {
+  upload: (file: File) => Promise<UploadResult>
+  onError?: (message: string) => void
+  stage: (attachment: ComposerAttachment) => void
+  update: (id: string, patch: Partial<ComposerAttachment>) => void
+  remove: (id: string) => void
+}
+
+let stagedCount = 0
+
+export function useAttachment(options: UseAttachmentOptions) {
+  async function addFiles(files: Iterable<File>): Promise<void> {
+    for (const file of files) {
+      if (file.size > MAX_ATTACHMENT_BYTES) {
+        options.onError?.(
+          i18n.global.t('agent.attachmentTooLarge', {
+            name: file.name,
+            limit: MAX_ATTACHMENT_LABEL
+          })
+        )
+        continue
+      }
+      const id = `upload-${++stagedCount}:${file.name}`
+      options.stage({
+        id,
+        name: file.name,
+        ref: '',
+        previewUrl: URL.createObjectURL(file),
+        uploading: true
+      })
+      try {
+        const result = await options.upload(file)
+        options.update(id, { ref: result.ref, uploading: false })
+      } catch {
+        options.onError?.(
+          i18n.global.t('agent.attachmentUploadFailed', { name: file.name })
+        )
+        options.remove(id)
+      }
+    }
+  }
+
+  function onDrop(event: DragEvent): Promise<void> {
+    event.preventDefault()
+    const files = event.dataTransfer?.files
+    return files && files.length > 0
+      ? addFiles(Array.from(files))
+      : Promise.resolve()
+  }
+
+  return { addFiles, onDrop }
+}

src/workbench/extensions/agent/composables/agent/useCanvasSelection.test.ts

@@ -0,0 +1,57 @@
+import { ref } from 'vue'
+import { describe, expect, it } from 'vitest'
+
+import type { SelectedNode } from './useCanvasSelection'
+import { useCanvasSelection } from './useCanvasSelection'
+
+const nodeA: SelectedNode = { id: '1', title: 'Load Checkpoint' }
+const nodeB: SelectedNode = { id: '2', title: 'KSampler' }
+
+describe('useCanvasSelection', () => {
+  it('stages the current selection only while live', () => {
+    const selection = ref<SelectedNode[]>([nodeA])
+    const isLive = ref(false)
+    const { staged } = useCanvasSelection({ selection, isLive })
+    expect(staged.value).toEqual([])
+
+    isLive.value = true
+    expect(staged.value).toEqual([nodeA])
+  })
+
+  it('clears on submit and does not re-stage the same selection', async () => {
+    const selection = ref<SelectedNode[]>([nodeA])
+    const { staged, consume } = useCanvasSelection({
+      selection,
+      isLive: ref(true)
+    })
+    expect(staged.value).toEqual([nodeA])
+
+    expect(consume()).toEqual([nodeA])
+    expect(staged.value).toEqual([])
+
+    selection.value = [nodeA]
+    await Promise.resolve()
+    expect(staged.value).toEqual([])
+  })
+
+  it('re-stages when the selection changes', () => {
+    const selection = ref<SelectedNode[]>([nodeA])
+    const { staged, consume } = useCanvasSelection({
+      selection,
+      isLive: ref(true)
+    })
+    consume()
+    selection.value = [nodeA, nodeB]
+    expect(staged.value).toEqual([nodeA, nodeB])
+  })
+
+  it('drops a tag on remove but keeps the rest', () => {
+    const selection = ref<SelectedNode[]>([nodeA, nodeB])
+    const { staged, remove } = useCanvasSelection({
+      selection,
+      isLive: ref(true)
+    })
+    remove('1')
+    expect(staged.value).toEqual([nodeB])
+  })
+})

src/workbench/extensions/agent/composables/agent/useCanvasSelection.ts

@@ -0,0 +1,62 @@
+import { ref, toValue, watch } from 'vue'
+
+import type { MaybeRefOrGetter } from 'vue'
+
+export interface SelectedNode {
+  id: string
+  title: string
+}
+
+export interface UseCanvasSelectionOptions {
+  selection: MaybeRefOrGetter<SelectedNode[]>
+  isLive: MaybeRefOrGetter<boolean>
+}
+
+function signature(nodes: SelectedNode[]): string {
+  return nodes
+    .map((node) => node.id)
+    .sort()
+    .join(',')
+}
+
+export function useCanvasSelection(options: UseCanvasSelectionOptions) {
+  const staged = ref<SelectedNode[]>([])
+  const consumedSig = ref<string | null>(null)
+  const stagedSig = ref<string | null>(null)
+
+  watch(
+    () => (toValue(options.isLive) ? toValue(options.selection) : []),
+    (nodes) => {
+      if (nodes.length === 0) {
+        staged.value = []
+        consumedSig.value = null
+        stagedSig.value = null
+        return
+      }
+      const sig = signature(nodes)
+      if (sig === consumedSig.value || sig === stagedSig.value) return
+      consumedSig.value = null
+      stagedSig.value = sig
+      staged.value = [...nodes]
+    },
+    { immediate: true, deep: true, flush: 'sync' }
+  )
+
+  function consume(): SelectedNode[] {
+    const tags = staged.value
+    consumedSig.value = signature(toValue(options.selection))
+    staged.value = []
+    return tags
+  }
+
+  function remove(id: string): void {
+    staged.value = staged.value.filter((node) => node.id !== id)
+  }
+
+  function add(node: SelectedNode): void {
+    if (staged.value.some((tag) => tag.id === node.id)) return
+    staged.value = [...staged.value, node]
+  }
+
+  return { staged, consume, remove, add }
+}

src/workbench/extensions/agent/composables/agent/useComposer.test.ts

@@ -0,0 +1,133 @@
+import { describe, expect, it, vi } from 'vitest'
+
+import type { ComposerAttachment } from './useComposer'
+import { useComposer } from './useComposer'
+
+function setup(streaming = false) {
+  const onSend =
+    vi.fn<(text: string, attachments: ComposerAttachment[]) => void>()
+  const onStop = vi.fn()
+  const composer = useComposer({
+    onSend,
+    onStop,
+    isStreaming: () => streaming
+  })
+  return { composer, onSend, onStop }
+}
+
+describe('useComposer', () => {
+  it('submit trims the draft, sends it, and clears draft + attachments', () => {
+    const { composer, onSend } = setup()
+    const attachment: ComposerAttachment = {
+      id: 'a1',
+      name: 'cat.png',
+      ref: 'uploaded_cat.png'
+    }
+    composer.draft.value = '  make a cat  '
+    composer.addAttachment(attachment)
+
+    composer.submit()
+
+    expect(onSend).toHaveBeenCalledWith('make a cat', [attachment])
+    expect(composer.draft.value).toBe('')
+    expect(composer.attachments.value).toEqual([])
+  })
+
+  it('blocks send while any attachment is uploading, unblocks on settle', () => {
+    const { composer, onSend } = setup()
+    composer.draft.value = 'wire it in'
+    composer.addAttachment({
+      id: 'u1',
+      name: 'cat.png',
+      ref: '',
+      uploading: true
+    })
+
+    expect(composer.canSend.value).toBe(false)
+    composer.submit()
+    expect(onSend).not.toHaveBeenCalled()
+
+    composer.updateAttachment('u1', {
+      ref: 'uploaded_cat.png',
+      uploading: false
+    })
+    expect(composer.canSend.value).toBe(true)
+  })
+
+  it('revokes a dismissed blob preview but never a submitted one', () => {
+    const revoke = vi.spyOn(URL, 'revokeObjectURL').mockImplementation(() => {})
+    const { composer } = setup()
+    composer.addAttachment({
+      id: 'a1',
+      name: 'a.png',
+      ref: 'r1',
+      previewUrl: 'blob:a'
+    })
+    composer.removeAttachment('a1')
+    expect(revoke).toHaveBeenCalledWith('blob:a')
+
+    revoke.mockClear()
+    composer.draft.value = 'send it'
+    composer.addAttachment({
+      id: 'a2',
+      name: 'b.png',
+      ref: 'r2',
+      previewUrl: 'blob:b'
+    })
+    composer.submit()
+    expect(revoke).not.toHaveBeenCalled()
+    revoke.mockRestore()
+  })
+
+  it('allows an attachment-only send with empty text', () => {
+    const { composer, onSend } = setup()
+    composer.addAttachment({ id: 'a1', name: 'cat.png', ref: 'r' })
+
+    expect(composer.canSend.value).toBe(true)
+    composer.submit()
+
+    expect(onSend).toHaveBeenCalledWith('', [
+      { id: 'a1', name: 'cat.png', ref: 'r' }
+    ])
+  })
+
+  it('does not send when there is neither text nor an attachment', () => {
+    const { composer, onSend } = setup()
+    composer.draft.value = '   '
+
+    expect(composer.canSend.value).toBe(false)
+    composer.submit()
+
+    expect(onSend).not.toHaveBeenCalled()
+  })
+
+  it('routes submit to stop while streaming, without sending', () => {
+    const { composer, onSend, onStop } = setup(true)
+    composer.draft.value = 'ignored while streaming'
+
+    composer.submit()
+
+    expect(onStop).toHaveBeenCalledOnce()
+    expect(onSend).not.toHaveBeenCalled()
+    expect(composer.draft.value).toBe('ignored while streaming')
+  })
+
+  it('insert appends to the draft without sending', () => {
+    const { composer, onSend } = setup()
+    composer.insert('first')
+    composer.insert('second')
+
+    expect(composer.draft.value).toBe('first second')
+    expect(onSend).not.toHaveBeenCalled()
+  })
+
+  it('removeAttachment drops the matching staged attachment', () => {
+    const { composer } = setup()
+    composer.addAttachment({ id: 'a1', name: 'a.png', ref: 'ra' })
+    composer.addAttachment({ id: 'a2', name: 'b.png', ref: 'rb' })
+
+    composer.removeAttachment('a1')
+
+    expect(composer.attachments.value.map((a) => a.id)).toEqual(['a2'])
+  })
+})

src/workbench/extensions/agent/composables/agent/useComposer.ts

@@ -0,0 +1,72 @@
+import { computed, ref } from 'vue'
+
+export interface ComposerAttachment {
+  id: string
+  name: string
+  ref: string
+  previewUrl?: string
+  uploading?: boolean
+}
+
+export interface UseComposerOptions {
+  onSend: (text: string, attachments: ComposerAttachment[]) => void
+  isStreaming: () => boolean
+  onStop: () => void
+}
+
+export function useComposer(options: UseComposerOptions) {
+  const draft = ref('')
+  const attachments = ref<ComposerAttachment[]>([])
+
+  const canSend = computed(
+    () =>
+      (draft.value.trim().length > 0 || attachments.value.length > 0) &&
+      !attachments.value.some((item) => item.uploading)
+  )
+
+  function submit(): void {
+    if (options.isStreaming()) {
+      options.onStop()
+      return
+    }
+    if (!canSend.value) return
+    options.onSend(draft.value.trim(), attachments.value)
+    draft.value = ''
+    attachments.value = []
+  }
+
+  function insert(text: string): void {
+    draft.value = draft.value ? `${draft.value} ${text}` : text
+  }
+
+  function addAttachment(attachment: ComposerAttachment): void {
+    attachments.value = [...attachments.value, attachment]
+  }
+
+  function updateAttachment(
+    id: string,
+    patch: Partial<ComposerAttachment>
+  ): void {
+    attachments.value = attachments.value.map((item) =>
+      item.id === id ? { ...item, ...patch } : item
+    )
+  }
+
+  function removeAttachment(id: string): void {
+    const removed = attachments.value.find((item) => item.id === id)
+    if (removed?.previewUrl?.startsWith('blob:'))
+      URL.revokeObjectURL(removed.previewUrl)
+    attachments.value = attachments.value.filter((item) => item.id !== id)
+  }
+
+  return {
+    draft,
+    attachments,
+    canSend,
+    submit,
+    insert,
+    addAttachment,
+    updateAttachment,
+    removeAttachment
+  }
+}

src/workbench/extensions/agent/composables/agent/useOnboarding.test.ts

@@ -0,0 +1,22 @@
+import { nextTick } from 'vue'
+import { beforeEach, describe, expect, it } from 'vitest'
+
+import { useOnboarding } from './useOnboarding'
+
+const KEY = 'test.onboarded'
+
+describe('useOnboarding', () => {
+  beforeEach(() => window.localStorage.clear())
+
+  it('is active until finished, then persists as seen', async () => {
+    const first = useOnboarding(KEY)
+    expect(first.active.value).toBe(true)
+
+    first.finish()
+    expect(first.active.value).toBe(false)
+
+    await nextTick()
+    const second = useOnboarding(KEY)
+    expect(second.active.value).toBe(false)
+  })
+})

src/workbench/extensions/agent/composables/agent/useOnboarding.ts

@@ -0,0 +1,20 @@
+import { useStorage } from '@vueuse/core'
+import { computed } from 'vue'
+
+export interface CoachStep {
+  target: string
+  title: string
+  body: string
+}
+
+export function useOnboarding(storageKey = 'Comfy.AgentPanel.onboarded') {
+  const seen = useStorage(storageKey, false)
+
+  const active = computed(() => !seen.value)
+
+  function finish(): void {
+    seen.value = true
+  }
+
+  return { active, finish }
+}

src/workbench/extensions/agent/schemas/__fixtures__/agent/ws-turn-cancelled.jsonl

@@ -0,0 +1,3 @@
+{"capturedAt":1783367145226,"frame":{"data":{"delta":"Let me pull the current node list and every settable widget value so I can walk through them precisely.","message_id":"5d7c81a9-31f5-42f8-81c0-7525473da046","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718"},"type":"agent_thinking"}}
+{"capturedAt":1783367145346,"frame":{"data":{"delta":"Stopped at your request.","message_id":"5d7c81a9-31f5-42f8-81c0-7525473da046","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718"},"type":"agent_message_delta"}}
+{"capturedAt":1783367145351,"frame":{"data":{"message_id":"5d7c81a9-31f5-42f8-81c0-7525473da046","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718","usage":null},"type":"agent_message_done"}}

src/workbench/extensions/agent/schemas/__fixtures__/agent/ws-turn-edit.jsonl

@@ -0,0 +1,20 @@
+{"capturedAt":1783366827411,"frame":{"type":"status","data":{"status":{"exec_info":{"queue_remaining":0}},"sid":"c3bf440f-8131-481d-b46d-fffbf799d950"}}}
+{"capturedAt":1783366831396,"frame":{"data":{"version":24,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366843413,"frame":{"data":{"version":24,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366855397,"frame":{"data":{"version":24,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366867397,"frame":{"data":{"version":24,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366879318,"frame":{"data":{"delta":"I'll find the exact widget addresses first, then edit those two values in place.","message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718"},"type":"agent_thinking"}}
+{"capturedAt":1783366881383,"frame":{"data":{"args":["workflow","slots","workflow.json"],"message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","status":"ok","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718","tool_name":"list_slots"},"type":"agent_tool_call"}}
+{"capturedAt":1783366883967,"frame":{"data":{"delta":"Let me get the full slot list to find the exact node addresses.","message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718"},"type":"agent_thinking"}}
+{"capturedAt":1783366884944,"frame":{"data":{"args":["workflow","ls-nodes","workflow.json"],"message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","status":"ok","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718","tool_name":"ls_nodes"},"type":"agent_tool_call"}}
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+{"capturedAt":1783366891396,"frame":{"data":{"version":26,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366894953,"frame":{"data":{"delta":"Done — both values updated in place, nothing else touched:\n\n- **Steps:** 20 → **12**\n- **Guidance (CFG):** 7 → **6.5**\n\nThe rest of the graph is unchanged, and I didn't run anything. Let me know when you'd like to generate.","message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718"},"type":"agent_message_delta"}}
+{"capturedAt":1783366894960,"frame":{"data":{"message_id":"172a6ede-7ab7-4b01-83b6-5b15f66dee4b","thread_id":"d4c016c4-3b8c-44cf-97de-1ae27e43e718","usage":{"cache_creation_input_tokens":0,"cache_read_input_tokens":35596,"input_tokens":4493,"output_tokens":425,"total_tokens":4918}},"type":"agent_message_done"}}
+{"capturedAt":1783366903400,"frame":{"data":{"version":26,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366915398,"frame":{"data":{"version":26,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366927396,"frame":{"data":{"version":26,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}
+{"capturedAt":1783366939396,"frame":{"data":{"version":26,"workflow_id":"a81718a4-02ae-41e6-ae85-c33b7bb880f6"},"type":"draft_version"}}

src/workbench/extensions/agent/schemas/agentApiSchema.test.ts

@@ -0,0 +1,185 @@
+import { describe, expect, it } from 'vitest'
+
+import {
+  AGENT_WS_EVENT_TYPES,
+  isAgentEvent,
+  parseAgentWsEvent,
+  zAgentCancelAccepted,
+  zAgentDraftSnapshot,
+  zAgentError,
+  zAgentMessage,
+  zAgentMessages,
+  zAgentTurnAccepted,
+  zAgentWsEvent
+} from './agentApiSchema'
+import type { ZodTypeAny } from 'zod'
+
+const fixtureText = import.meta.glob('./__fixtures__/agent/*.jsonl', {
+  query: '?raw',
+  import: 'default',
+  eager: true
+}) as Record<string, string>
+
+function jsonlLines(path: string): unknown[] {
+  return fixtureText[path]
+    .split('\n')
+    .filter((line) => line.trim().length > 0)
+    .map((line) => JSON.parse(line) as unknown)
+}
+
+const wsPaths = Object.keys(fixtureText).filter((path) => path.includes('/ws-'))
+const restPath = './__fixtures__/agent/rest-responses.jsonl'
+
+interface WsLine {
+  frame: { type: string }
+}
+
+interface RestLine {
+  op: string
+  status: number
+  body: unknown
+}
+
+describe('agentApiSchema fixture gate', () => {
+  describe('ws frames: every line is a valid agent event or a recognized-foreign frame', () => {
+    it.for(wsPaths)('%s', (path) => {
+      const lines = jsonlLines(path) as WsLine[]
+      lines.forEach((line, index) => {
+        const { frame } = line
+        if (isAgentEvent(frame.type)) {
+          const result = zAgentWsEvent.safeParse(frame)
+          if (!result.success) {
+            throw new Error(
+              `${path} line ${index} (${frame.type}) failed: ${result.error.message}`
+            )
+          }
+        } else {
+          expect(
+            zAgentWsEvent.safeParse(frame).success,
+            `${path} line ${index} (${frame.type}) must stay foreign to the agent union`
+          ).toBe(false)
+        }
+      })
+    })
+  })
+
+  describe('rest responses: each line parses through its op/status schema', () => {
+    const restLines = jsonlLines(restPath) as RestLine[]
+
+    it.for(restLines.map((line, index) => [index, line] as const))(
+      'line %i',
+      ([index, line]) => {
+        const schema = restSchemaFor(line)
+        const result = schema.safeParse(line.body)
+        if (!result.success) {
+          throw new Error(
+            `rest line ${index} (op=${line.op} status=${line.status}) failed: ${result.error.message}`
+          )
+        }
+      }
+    )
+  })
+})
+
+function restSchemaFor(line: RestLine): ZodTypeAny {
+  if (line.status >= 400) return zAgentError
+  if (line.op.startsWith('postMessage')) return zAgentTurnAccepted
+  if (line.op.startsWith('getMessages')) return zAgentMessages
+  if (line.op.startsWith('getDraft')) return zAgentDraftSnapshot
+  if (line.op.startsWith('cancelMessage')) return zAgentCancelAccepted
+  throw new Error(`no schema mapped for op=${line.op} status=${line.status}`)
+}
+
+describe('agentApiSchema contract subtleties', () => {
+  const doneBase = {
+    type: 'agent_message_done',
+    data: { message_id: 'm1', thread_id: 't1' }
+  }
+
+  it('accepts agent_message_done with usage null (cancelled turn)', () => {
+    expect(
+      zAgentWsEvent.safeParse({
+        ...doneBase,
+        data: { ...doneBase.data, usage: null }
+      }).success
+    ).toBe(true)
+  })
+
+  it('rejects draft_patch missing base_version', () => {
+    expect(
+      zAgentWsEvent.safeParse({
+        type: 'draft_patch',
+        data: { version: 2, content: {}, workflow_id: 'w1' }
+      }).success
+    ).toBe(false)
+  })
+
+  it('rejects an unknown event type in the union while isAgentEvent stays false', () => {
+    expect(zAgentWsEvent.safeParse({ type: 'status', data: {} }).success).toBe(
+      false
+    )
+    expect(isAgentEvent('status')).toBe(false)
+  })
+
+  it('accepts extra additive keys in event data', () => {
+    const parsed = parseAgentWsEvent({
+      type: 'draft_version',
+      data: { version: 5, workflow_id: 'w1', future_field: true }
+    })
+    expect(parsed.success).toBe(true)
+  })
+
+  it('exposes exactly the seven agent event types', () => {
+    expect([...AGENT_WS_EVENT_TYPES].sort()).toEqual(
+      [
+        'agent_active_tab',
+        'agent_message_delta',
+        'agent_message_done',
+        'agent_thinking',
+        'agent_tool_call',
+        'draft_patch',
+        'draft_version'
+      ].sort()
+    )
+  })
+
+  it('parses agent_active_tab with an optional name and rejects a missing workflow_id', () => {
+    const parsed = zAgentWsEvent.safeParse({
+      type: 'agent_active_tab',
+      data: { workflow_id: 'wf-1', thread_id: 'th-1' }
+    })
+    expect(parsed.success).toBe(true)
+    expect(
+      zAgentWsEvent.safeParse({
+        type: 'agent_active_tab',
+        data: { thread_id: 'th-1' }
+      }).success
+    ).toBe(false)
+  })
+
+  it('accepts an AgentMessage with status interrupted', () => {
+    expect(
+      zAgentMessage.safeParse({
+        id: 'm1',
+        thread_id: 't1',
+        seq: 3,
+        role: 'assistant',
+        status: 'interrupted',
+        turn_id: 'x1'
+      }).success
+    ).toBe(true)
+  })
+
+  it('accepts an AgentMessage with content omitted', () => {
+    expect(
+      zAgentMessage.safeParse({
+        id: 'm1',
+        thread_id: 't1',
+        seq: 0,
+        role: 'user',
+        status: 'complete',
+        turn_id: 'x1'
+      }).success
+    ).toBe(true)
+  })
+})

src/workbench/extensions/agent/schemas/agentApiSchema.ts

@@ -0,0 +1,208 @@
+import { zWorkflowListResponse } from '@comfyorg/ingest-types/zod'
+import { z } from 'zod'
+
+const zTurnId = z.string().brand<'TurnId'>()
+export type TurnId = z.infer<typeof zTurnId>
+
+export const zAgentTurnAccepted = z
+  .object({
+    thread_id: z.string(),
+    message_id: z.string(),
+    workflow_id: z.string().optional()
+  })
+  .passthrough()
+export type AgentTurnAccepted = z.infer<typeof zAgentTurnAccepted>
+
+export const zAgentMessage = z
+  .object({
+    id: z.string(),
+    thread_id: z.string(),
+    seq: z.number().int(),
+    role: z.enum(['user', 'assistant', 'tool', 'system']),
+    status: z.enum(['streaming', 'complete', 'error', 'interrupted']),
+    turn_id: z.string(),
+    content: z.record(z.string(), z.unknown()).optional()
+  })
+  .passthrough()
+
+export const zAgentMessages = z.array(zAgentMessage)
+export type AgentMessages = z.infer<typeof zAgentMessages>
+
+const zAgentThreadSummary = z
+  .object({
+    id: z.string(),
+    title: z.string(),
+    preview: z.string().optional(),
+    last_message_at: z.string().optional(),
+    updated_at: z.string().optional(),
+    created_at: z.string().optional()
+  })
+  .passthrough()
+export type AgentThreadSummary = z.infer<typeof zAgentThreadSummary>
+
+export const zAgentThreads = z
+  .object({ threads: z.array(zAgentThreadSummary) })
+  .passthrough()
+
+export const zCloudWorkflowIndex = zWorkflowListResponse
+  .pick({ pagination: true })
+  .extend({
+    data: z.array(
+      z.object({ id: z.string(), name: z.string().optional() }).passthrough()
+    )
+  })
+export type CloudWorkflowEntry = z.infer<
+  typeof zCloudWorkflowIndex
+>['data'][number]
+
+export const zAgentCancelAccepted = z.object({
+  status: z.literal('cancelling')
+})
+export type AgentCancelAccepted = z.infer<typeof zAgentCancelAccepted>
+
+export const zAgentDraftSnapshot = z.object({
+  content: z.record(z.string(), z.unknown()),
+  version: z.number().int()
+})
+export type AgentDraftSnapshot = z.infer<typeof zAgentDraftSnapshot>
+
+export const zAgentError = z.object({
+  error: z.string()
+})
+
+export const zUploadImageResult = z.object({
+  name: z.string(),
+  subfolder: z.string(),
+  type: z.string()
+})
+export type UploadImageResult = z.infer<typeof zUploadImageResult>
+
+const zAgentThinkingData = z
+  .object({
+    delta: z.string(),
+    message_id: z.string(),
+    thread_id: z.string()
+  })
+  .passthrough()
+
+const zAgentToolCallData = z
+  .object({
+    tool_name: z.string(),
+    status: z.string(),
+    args: z.array(z.string()),
+    message_id: z.string(),
+    thread_id: z.string()
+  })
+  .passthrough()
+
+const zDraftPatchData = z
+  .object({
+    base_version: z.number().int(),
+    version: z.number().int(),
+    content: z.record(z.string(), z.unknown()),
+    message_id: z.string().optional(),
+    thread_id: z.string().optional(),
+    workflow_id: z.string()
+  })
+  .passthrough()
+export type DraftPatchData = z.infer<typeof zDraftPatchData>
+
+const zAgentMessageDeltaData = z
+  .object({
+    delta: z.string(),
+    message_id: z.string(),
+    thread_id: z.string()
+  })
+  .passthrough()
+
+const zAgentMessageDoneData = z
+  .object({
+    message_id: z.string(),
+    thread_id: z.string(),
+    usage: z.unknown().nullish()
+  })
+  .passthrough()
+
+const zDraftVersionData = z
+  .object({
+    version: z.number().int(),
+    workflow_id: z.string()
+  })
+  .passthrough()
+export type DraftVersionData = z.infer<typeof zDraftVersionData>
+
+const zAgentActiveTabData = z
+  .object({
+    workflow_id: z.string(),
+    name: z.string().optional(),
+    thread_id: z.string().optional(),
+    message_id: z.string().optional()
+  })
+  .passthrough()
+export type AgentActiveTabData = z.infer<typeof zAgentActiveTabData>
+
+const zAgentThinkingEvent = z.object({
+  type: z.literal('agent_thinking'),
+  data: zAgentThinkingData
+})
+
+const zAgentToolCallEvent = z.object({
+  type: z.literal('agent_tool_call'),
+  data: zAgentToolCallData
+})
+
+const zDraftPatchEvent = z.object({
+  type: z.literal('draft_patch'),
+  data: zDraftPatchData
+})
+
+const zAgentMessageDeltaEvent = z.object({
+  type: z.literal('agent_message_delta'),
+  data: zAgentMessageDeltaData
+})
+
+const zAgentMessageDoneEvent = z.object({
+  type: z.literal('agent_message_done'),
+  data: zAgentMessageDoneData
+})
+
+const zDraftVersionEvent = z.object({
+  type: z.literal('draft_version'),
+  data: zDraftVersionData
+})
+
+const zAgentActiveTabEvent = z.object({
+  type: z.literal('agent_active_tab'),
+  data: zAgentActiveTabData
+})
+
+export const zAgentWsEvent = z.discriminatedUnion('type', [
+  zAgentThinkingEvent,
+  zAgentToolCallEvent,
+  zDraftPatchEvent,
+  zAgentMessageDeltaEvent,
+  zAgentMessageDoneEvent,
+  zDraftVersionEvent,
+  zAgentActiveTabEvent
+])
+export type AgentWsEvent = z.infer<typeof zAgentWsEvent>
+
+export const AGENT_WS_EVENT_TYPES: ReadonlySet<string> = new Set([
+  'agent_thinking',
+  'agent_tool_call',
+  'draft_patch',
+  'agent_message_delta',
+  'agent_message_done',
+  'draft_version',
+  'agent_active_tab'
+])
+
+export function isAgentEvent(type: string): boolean {
+  return AGENT_WS_EVENT_TYPES.has(type)
+}
+
+export function parseAgentWsEvent(
+  value: unknown
+): z.SafeParseReturnType<unknown, AgentWsEvent> {
+  return zAgentWsEvent.safeParse(value)
+}

src/workbench/extensions/agent/services/agent/agentEventSource.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect, it, vi } from 'vitest'
+
+import { AGENT_WS_EVENT_TYPES } from '../../schemas/agentApiSchema'
+
+import type { AgentEventHost } from './agentEventSource'
+import { createAgentEventSource } from './agentEventSource'
+
+function fakeHost(readyState?: number) {
+  const target = new EventTarget()
+  const registered = new Set<string>()
+  const host: AgentEventHost = {
+    socket: readyState === undefined ? null : { readyState },
+    addCustomEventListener(type, listener) {
+      registered.add(type)
+      target.addEventListener(type, listener as EventListener)
+    },
+    removeCustomEventListener(type, listener) {
+      registered.delete(type)
+      target.removeEventListener(type, listener as EventListener)
+    },
+    addEventListener(type, listener) {
+      target.addEventListener(type, listener)
+    },
+    removeEventListener(type, listener) {
+      target.removeEventListener(type, listener)
+    }
+  }
+  const emit = (type: string, data?: unknown): void => {
+    target.dispatchEvent(new CustomEvent(type, { detail: data }))
+  }
+  return { host, emit, registered }
+}
+
+describe('createAgentEventSource', () => {
+  it('registers every agent event type and delivers frames as {type, data}', () => {
+    const { host, emit, registered } = fakeHost()
+    const seen = vi.fn()
+
+    createAgentEventSource(host).subscribe(seen)
+
+    expect(registered).toEqual(new Set(AGENT_WS_EVENT_TYPES))
+
+    emit('agent_message_delta', { delta: 'hi' })
+    expect(seen).toHaveBeenCalledWith({
+      type: 'agent_message_delta',
+      data: { delta: 'hi' }
+    })
+  })
+
+  it('stops delivering after unsubscribe', () => {
+    const { host, emit, registered } = fakeHost()
+    const seen = vi.fn()
+
+    const unsubscribe = createAgentEventSource(host).subscribe(seen)
+    unsubscribe()
+
+    emit('agent_message_delta', { delta: 'late' })
+    expect(seen).not.toHaveBeenCalled()
+    expect(registered.size).toBe(0)
+  })
+
+  it('maps reconnecting/reconnected to liveness', () => {
+    const { host, emit } = fakeHost()
+    const status = vi.fn()
+
+    createAgentEventSource(host).onStatus?.(status)
+    expect(status).not.toHaveBeenCalled()
+
+    emit('reconnecting')
+    expect(status).toHaveBeenLastCalledWith(false)
+
+    emit('reconnected')
+    expect(status).toHaveBeenLastCalledWith(true)
+  })
+
+  it('reports live once when the socket is already open at bind time', () => {
+    const { host } = fakeHost(WebSocket.OPEN)
+    const status = vi.fn()
+
+    createAgentEventSource(host).onStatus?.(status)
+
+    expect(status).toHaveBeenCalledTimes(1)
+    expect(status).toHaveBeenCalledWith(true)
+  })
+
+  it('stays quiet for a connecting socket and after status unsubscribe', () => {
+    const { host, emit } = fakeHost(WebSocket.CONNECTING)
+    const status = vi.fn()
+
+    const unsubscribe = createAgentEventSource(host).onStatus?.(status)
+    expect(status).not.toHaveBeenCalled()
+
+    unsubscribe?.()
+    emit('reconnected')
+    expect(status).not.toHaveBeenCalled()
+  })
+})

src/workbench/extensions/agent/services/agent/agentEventSource.ts

@@ -0,0 +1,49 @@
+import type { AgentEventSource } from '../../composables/agent/useAgentSession'
+import { AGENT_WS_EVENT_TYPES } from '../../schemas/agentApiSchema'
+
+export interface AgentEventHost {
+  socket: { readyState: number } | null
+  addCustomEventListener(
+    type: string,
+    listener: (event: CustomEvent<unknown>) => void
+  ): void
+  removeCustomEventListener(
+    type: string,
+    listener: (event: CustomEvent<unknown>) => void
+  ): void
+  addEventListener(
+    type: 'reconnecting' | 'reconnected',
+    listener: () => void
+  ): void
+  removeEventListener(
+    type: 'reconnecting' | 'reconnected',
+    listener: () => void
+  ): void
+}
+
+const OPEN = 1
+
+export function createAgentEventSource(host: AgentEventHost): AgentEventSource {
+  return {
+    subscribe(listener) {
+      const unbinders = [...AGENT_WS_EVENT_TYPES].map((type) => {
+        const onEvent = (event: CustomEvent<unknown>): void =>
+          listener({ type, data: event.detail })
+        host.addCustomEventListener(type, onEvent)
+        return () => host.removeCustomEventListener(type, onEvent)
+      })
+      return () => unbinders.forEach((unbind) => unbind())
+    },
+    onStatus(listener) {
+      const onDown = (): void => listener(false)
+      const onUp = (): void => listener(true)
+      host.addEventListener('reconnecting', onDown)
+      host.addEventListener('reconnected', onUp)
+      if (host.socket?.readyState === OPEN) listener(true)
+      return () => {
+        host.removeEventListener('reconnecting', onDown)
+        host.removeEventListener('reconnected', onUp)
+      }
+    }
+  }
+}

src/workbench/extensions/agent/services/agent/agentEventTransport.test.ts

@@ -0,0 +1,228 @@
+import { describe, expect, it, vi } from 'vitest'
+
+import type { AgentWsEvent, TurnId } from '../../schemas/agentApiSchema'
+import { zAgentWsEvent } from '../../schemas/agentApiSchema'
+
+import type { AgentChatEvent } from './agentEventTransport'
+import { createAgentEventTransport } from './agentEventTransport'
+import type { AssistantMessage, TextPart, ToolPart } from './agentMessageParts'
+import { createAssistantMessage } from './agentMessageParts'
+
+const fixtureText = import.meta.glob(
+  '../../schemas/__fixtures__/agent/*.jsonl',
+  { query: '?raw', import: 'default', eager: true }
+) as Record<string, string>
+
+function fixtureFor(name: string): string {
+  const path = Object.keys(fixtureText).find((p) => p.endsWith(`/${name}`))
+  if (!path) throw new Error(`fixture not found: ${name}`)
+  return fixtureText[path]
+}
+
+interface WsLine {
+  frame: unknown
+}
+
+function chatEventsFor(fixture: string, messageId: string): AgentChatEvent[] {
+  const events: AgentChatEvent[] = []
+  for (const line of fixtureFor(fixture).split('\n')) {
+    if (!line.trim()) continue
+    const { frame } = JSON.parse(line) as WsLine
+    const parsed = zAgentWsEvent.safeParse(frame)
+    if (!parsed.success) continue
+    const event = parsed.data
+    if (!isChatEvent(event)) continue
+    if (event.data.message_id !== messageId) continue
+    events.push(event)
+  }
+  return events
+}
+
+function isChatEvent(event: AgentWsEvent): event is AgentChatEvent {
+  return (
+    event.type === 'agent_thinking' ||
+    event.type === 'agent_tool_call' ||
+    event.type === 'agent_message_delta' ||
+    event.type === 'agent_message_done'
+  )
+}
+
+const T = 't1' as TurnId
+
+function drive(events: AgentChatEvent[]): AssistantMessage {
+  const message = createAssistantMessage(T)
+  const emit = vi.fn<(m: AssistantMessage) => void>()
+  const transport = createAgentEventTransport(message, emit)
+  for (const event of events) transport.ingest(event)
+  return emit.mock.calls.at(-1)?.[0] ?? message
+}
+
+function thinking(delta: string): AgentChatEvent {
+  return {
+    type: 'agent_thinking',
+    data: { delta, message_id: 'm', thread_id: 't' }
+  }
+}
+
+function toolCall(tool_name: string, status: string): AgentChatEvent {
+  return {
+    type: 'agent_tool_call',
+    data: { tool_name, status, args: [], message_id: 'm', thread_id: 't' }
+  }
+}
+
+function delta(text: string): AgentChatEvent {
+  return {
+    type: 'agent_message_delta',
+    data: { delta: text, message_id: 'm', thread_id: 't' }
+  }
+}
+
+const parts = (m: AssistantMessage) => m.parts
+const toolParts = (m: AssistantMessage): ToolPart[] =>
+  m.parts.filter((p): p is ToolPart => p.type === 'tool')
+const textParts = (m: AssistantMessage): TextPart[] =>
+  m.parts.filter((p): p is TextPart => p.type === 'text')
+
+describe('agentEventTransport fixture replay', () => {
+  it('ws-turn-edit: four settled tools then the reply text', () => {
+    const events = chatEventsFor(
+      'ws-turn-edit.jsonl',
+      '172a6ede-7ab7-4b01-83b6-5b15f66dee4b'
+    )
+    const replyText = events
+      .filter((e) => e.type === 'agent_message_delta')
+      .map((e) => (e.type === 'agent_message_delta' ? e.data.delta : ''))
+      .join('')
+
+    const message = drive(events)
+
+    expect(
+      toolParts(message).map((p) => ({
+        name: p.name,
+        ok: p.ok,
+        state: p.state
+      }))
+    ).toEqual([
+      { name: 'list_slots', ok: true, state: 'done' },
+      { name: 'ls_nodes', ok: true, state: 'done' },
+      { name: 'set_widget', ok: true, state: 'done' },
+      { name: 'set_widget', ok: true, state: 'done' }
+    ])
+    const texts = textParts(message)
+    expect(texts).toHaveLength(1)
+    expect(texts[0]).toMatchObject({ text: replyText, state: 'done' })
+    expect(parts(message).at(-1)).toBe(texts[0])
+    expect(message.streaming).toBe(false)
+    expect(message.thinking).toBe(false)
+  })
+
+  it('ws-turn-cancelled: one reply text part, settled', () => {
+    const events = chatEventsFor(
+      'ws-turn-cancelled.jsonl',
+      '5d7c81a9-31f5-42f8-81c0-7525473da046'
+    )
+    const message = drive(events)
+
+    const texts = textParts(message)
+    expect(texts).toHaveLength(1)
+    expect(texts[0]).toMatchObject({
+      text: 'Stopped at your request.',
+      state: 'done'
+    })
+    expect(toolParts(message)).toHaveLength(0)
+    expect(message.streaming).toBe(false)
+  })
+})
+
+describe('agentEventTransport thinking chip', () => {
+  it('thinking before any text flips the chip and creates no part', () => {
+    const message = drive([thinking('planning')])
+    expect(message.thinking).toBe(true)
+    expect(message.parts).toHaveLength(0)
+  })
+
+  it('thinking after text does not re-flip the chip', () => {
+    const message = drive([delta('hello'), thinking('second thought')])
+    expect(message.thinking).toBe(false)
+  })
+})
+
+describe('agentEventTransport text and tool parts', () => {
+  it('two deltas append into one text part', () => {
+    const message = drive([delta('foo '), delta('bar')])
+    const texts = textParts(message)
+    expect(texts).toHaveLength(1)
+    expect(texts[0].text).toBe('foo bar')
+  })
+
+  it('a delta with no prior thinking opens a text part directly', () => {
+    const message = drive([delta('hi')])
+    expect(textParts(message)).toHaveLength(1)
+    expect(textParts(message)[0].text).toBe('hi')
+  })
+
+  it('delta -> tool -> delta yields text, tool, text as three parts', () => {
+    const message = drive([
+      delta('before'),
+      toolCall('run', 'ok'),
+      delta('after')
+    ])
+    expect(parts(message).map((p) => p.type)).toEqual(['text', 'tool', 'text'])
+    expect(textParts(message).map((p) => p.text)).toEqual(['before', 'after'])
+  })
+
+  it('a tool with status error settles ok false, state done', () => {
+    const message = drive([toolCall('run', 'error')])
+    expect(toolParts(message)[0]).toMatchObject({
+      state: 'done',
+      ok: false
+    })
+  })
+})
+
+describe('agentEventTransport settle lifecycle', () => {
+  it('settle mid-stream closes the open text part and clears streaming', () => {
+    const message = createAssistantMessage(T)
+    const emit = vi.fn<(m: AssistantMessage) => void>()
+    const transport = createAgentEventTransport(message, emit)
+    transport.ingest(delta('partial'))
+    transport.settle()
+    const final = emit.mock.calls.at(-1)?.[0] ?? message
+    expect(textParts(final)[0]).toMatchObject({
+      text: 'partial',
+      state: 'done'
+    })
+    expect(final.streaming).toBe(false)
+    expect(final.thinking).toBe(false)
+  })
+
+  it('a second settle is a no-op after the first', () => {
+    const message = createAssistantMessage(T)
+    const emit = vi.fn<(m: AssistantMessage) => void>()
+    const transport = createAgentEventTransport(message, emit)
+    transport.settle()
+    const callsAfterFirst = emit.mock.calls.length
+    transport.settle()
+    expect(emit.mock.calls.length).toBe(callsAfterFirst)
+  })
+
+  it('events arriving after settle are ignored', () => {
+    const message = createAssistantMessage(T)
+    const emit = vi.fn<(m: AssistantMessage) => void>()
+    const transport = createAgentEventTransport(message, emit)
+    transport.ingest(delta('final'))
+    transport.settle()
+    const callsAfterSettle = emit.mock.calls.length
+
+    transport.ingest(delta(' late'))
+    transport.ingest(toolCall('late_tool', 'ok'))
+
+    expect(emit.mock.calls.length).toBe(callsAfterSettle)
+    expect(textParts(message)[0]).toMatchObject({
+      text: 'final',
+      state: 'done'
+    })
+    expect(toolParts(message)).toHaveLength(0)
+  })
+})

src/workbench/extensions/agent/services/agent/agentEventTransport.ts

@@ -0,0 +1,85 @@
+import type { AgentWsEvent } from '../../schemas/agentApiSchema'
+
+import type { AssistantMessage, TextPart, ToolPart } from './agentMessageParts'
+import { snapshotMessage } from './agentMessageParts'
+
+export type AgentChatEvent = Extract<
+  AgentWsEvent,
+  {
+    type:
+      | 'agent_thinking'
+      | 'agent_tool_call'
+      | 'agent_message_delta'
+      | 'agent_message_done'
+  }
+>
+
+export interface AgentEventTransport {
+  ingest: (event: AgentChatEvent) => void
+  settle: () => void
+}
+
+export function createAgentEventTransport(
+  message: AssistantMessage,
+  emit: (m: AssistantMessage) => void
+): AgentEventTransport {
+  let openText: TextPart | null = null
+  let gotText = false
+  let toolCount = 0
+  let settled = false
+
+  function closeOpenText(): void {
+    if (openText) {
+      openText.state = 'done'
+      openText = null
+    }
+  }
+
+  function openNewText(): TextPart {
+    const part: TextPart = { type: 'text', text: '', state: 'streaming' }
+    message.parts.push(part)
+    openText = part
+    return part
+  }
+
+  function ingest(event: AgentChatEvent): void {
+    if (settled) return
+    switch (event.type) {
+      case 'agent_thinking':
+        if (!gotText) message.thinking = true
+        break
+      case 'agent_tool_call': {
+        closeOpenText()
+        const part: ToolPart = {
+          type: 'tool',
+          callId: `tool_${toolCount++}`,
+          name: event.data.tool_name,
+          state: 'done',
+          ok: event.data.status === 'ok'
+        }
+        message.parts.push(part)
+        break
+      }
+      case 'agent_message_delta':
+        message.thinking = false
+        gotText = true
+        ;(openText ?? openNewText()).text += event.data.delta
+        break
+      case 'agent_message_done':
+        settle()
+        return
+    }
+    emit(snapshotMessage(message))
+  }
+
+  function settle(): void {
+    if (settled) return
+    settled = true
+    closeOpenText()
+    message.thinking = false
+    message.streaming = false
+    emit(snapshotMessage(message))
+  }
+
+  return { ingest, settle }
+}

src/workbench/extensions/agent/services/agent/agentMessageParts.ts

@@ -0,0 +1,47 @@
+import type { TurnId } from '../../schemas/agentApiSchema'
+
+export type PartState = 'streaming' | 'done'
+
+export interface TextPart {
+  type: 'text'
+  text: string
+  state: PartState
+}
+
+export interface ToolPart {
+  type: 'tool'
+  callId: string
+  name: string
+  state: PartState
+  ok?: boolean
+}
+
+export interface NoticePart {
+  type: 'notice'
+  level: 'info' | 'warning' | 'error'
+  text: string
+}
+
+type MessagePart = TextPart | ToolPart | NoticePart
+
+export interface AssistantMessage {
+  id: TurnId
+  role: 'assistant'
+  parts: MessagePart[]
+  streaming: boolean
+  thinking: boolean
+}
+
+export function createAssistantMessage(id: TurnId): AssistantMessage {
+  return {
+    id,
+    role: 'assistant',
+    parts: [],
+    streaming: true,
+    thinking: false
+  }
+}
+
+export function snapshotMessage(message: AssistantMessage): AssistantMessage {
+  return { ...message, parts: [...message.parts] }
+}

src/workbench/extensions/agent/services/agent/agentRestClient.test.ts

@@ -0,0 +1,235 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+const fetchApi = vi.hoisted(() =>
+  vi.fn<(route: string, init?: RequestInit) => Promise<Response>>()
+)
+vi.mock('@/scripts/api', () => ({ api: { fetchApi } }))
+
+import { AgentApiError, createAgentRestClient } from './agentRestClient'
+
+function jsonResponse(status: number, body: unknown): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { 'Content-Type': 'application/json' }
+  })
+}
+
+function respond(response: Response) {
+  fetchApi.mockResolvedValueOnce(response)
+}
+
+function lastCall(): { route: string; init: RequestInit } {
+  const [route, init] = fetchApi.mock.calls.at(-1)!
+  return { route, init: init ?? {} }
+}
+
+function contentType(init: RequestInit): string | undefined {
+  return (init.headers as Record<string, string> | undefined)?.['Content-Type']
+}
+
+const makeClient = createAgentRestClient
+
+const turnAccepted = {
+  message_id: 'm1',
+  thread_id: 't1',
+  workflow_id: 'w1'
+}
+
+beforeEach(() => {
+  fetchApi.mockReset()
+})
+
+describe('agentRestClient route + method', () => {
+  it('postMessage targets the literal "new" thread path to open a thread', async () => {
+    respond(jsonResponse(202, turnAccepted))
+    await makeClient().postMessage('new', { content: 'hi' })
+
+    const { route, init } = lastCall()
+    expect(route).toBe('/agent/threads/new/messages')
+    expect(init.method).toBe('POST')
+  })
+
+  it('getMessages GETs the thread messages path', async () => {
+    respond(jsonResponse(200, []))
+    await makeClient().getMessages('t7')
+
+    const { route, init } = lastCall()
+    expect(route).toBe('/agent/threads/t7/messages')
+    expect(init.method).toBe('GET')
+  })
+
+  it('cancelMessage POSTs the cancel path with an empty JSON body', async () => {
+    respond(jsonResponse(202, { status: 'cancelling' }))
+    await makeClient().cancelMessage('t7', 'm3')
+
+    const { route, init } = lastCall()
+    expect(route).toBe('/agent/threads/t7/messages/m3/cancel')
+    expect(init.method).toBe('POST')
+    expect(init.body).toBe('{}')
+  })
+
+  it('listCloudWorkflows GETs the paginated workflows path until has_more is false', async () => {
+    const page = (data: unknown[], hasMore: boolean) =>
+      jsonResponse(200, {
+        data,
+        pagination: {
+          offset: 0,
+          limit: 100,
+          total: data.length,
+          has_more: hasMore
+        }
+      })
+    respond(page([{ id: 'wf-1', name: 'one' }], true))
+    respond(page([{ id: 'wf-2', name: 'two' }], false))
+
+    const workflows = await makeClient().listCloudWorkflows()
+
+    expect(fetchApi.mock.calls[0][0]).toBe('/workflows?limit=100&offset=0')
+    expect(fetchApi.mock.calls[1][0]).toBe('/workflows?limit=100&offset=100')
+    expect(workflows.map((w) => w.id)).toEqual(['wf-1', 'wf-2'])
+  })
+})
+
+describe('getDraft query encoding', () => {
+  it('encodes a workflow id containing a space', async () => {
+    respond(jsonResponse(200, { content: {}, version: 1 }))
+    await makeClient().getDraft('my workflow')
+
+    expect(lastCall().route).toBe('/agent/draft?workflow_id=my%20workflow')
+  })
+
+  it('encodes a workflow id containing a slash', async () => {
+    respond(jsonResponse(200, { content: {}, version: 1 }))
+    await makeClient().getDraft('a/b')
+
+    expect(lastCall().route).toBe('/agent/draft?workflow_id=a%2Fb')
+  })
+})
+
+describe('postMessage wire body', () => {
+  it('uses snake_case workflow_id and includes only the keys provided', async () => {
+    respond(jsonResponse(202, turnAccepted))
+    await makeClient().postMessage('t1', {
+      content: 'build it',
+      workflowId: 'wf-9',
+      selection: { nodeId: 3 },
+      attachments: ['a1']
+    })
+
+    const { init } = lastCall()
+    const parsed = JSON.parse(init.body as string) as Record<string, unknown>
+    expect(parsed).toEqual({
+      content: 'build it',
+      workflow_id: 'wf-9',
+      selection: { nodeId: 3 },
+      attachments: ['a1']
+    })
+    expect(contentType(init)).toBe('application/json')
+  })
+
+  it('omits absent optionals rather than sending them as undefined keys', async () => {
+    respond(jsonResponse(202, turnAccepted))
+    await makeClient().postMessage('t1', { content: 'just text' })
+
+    const parsed = JSON.parse(lastCall().init.body as string) as Record<
+      string,
+      unknown
+    >
+    expect(Object.keys(parsed)).toEqual(['content'])
+  })
+})
+
+describe('uploadImage multipart', () => {
+  it('posts FormData with the blob appended under "image" with the filename, no manual Content-Type', async () => {
+    respond(jsonResponse(200, { name: 'x.png', subfolder: '', type: 'input' }))
+    const appendSpy = vi.spyOn(FormData.prototype, 'append')
+    const blob = new Blob(['bytes'], { type: 'image/png' })
+    await makeClient().uploadImage(blob, 'x.png')
+
+    const { route, init } = lastCall()
+    expect(route).toBe('/upload/image')
+    expect(init.method).toBe('POST')
+    expect(init.body).toBeInstanceOf(FormData)
+    expect(appendSpy).toHaveBeenCalledWith('image', blob, 'x.png')
+    expect(contentType(init)).toBeUndefined()
+    appendSpy.mockRestore()
+  })
+})
+
+describe('success response parsing', () => {
+  it('parses the postMessage 202 through zAgentTurnAccepted, keeping extra workflow_id', async () => {
+    respond(jsonResponse(202, turnAccepted))
+
+    const result = await makeClient().postMessage('t1', { content: 'hi' })
+
+    expect(result.message_id).toBe('m1')
+    expect(result.thread_id).toBe('t1')
+    expect((result as Record<string, unknown>).workflow_id).toBe('w1')
+  })
+
+  it('parses a getDraft 200 snapshot', async () => {
+    respond(jsonResponse(200, { content: { nodes: [] }, version: 24 }))
+
+    const result = await makeClient().getDraft('wf-1')
+
+    expect(result.version).toBe(24)
+    expect(result.content).toEqual({ nodes: [] })
+  })
+})
+
+describe('error mapping', () => {
+  it('maps a plain-string error body to its message with the status and parsed body', async () => {
+    respond(jsonResponse(409, { error: 'turn is not running' }))
+
+    const error = await makeClient()
+      .cancelMessage('t1', 'm1')
+      .catch((e: unknown) => e)
+
+    expect(error).toBeInstanceOf(AgentApiError)
+    const apiError = error as AgentApiError
+    expect(apiError.message).toBe('turn is not running')
+    expect(apiError.status).toBe(409)
+    expect(apiError.body).toEqual({ error: 'turn is not running' })
+  })
+
+  it('reads the ingest-shaped {error:{message,type}} nested message', async () => {
+    respond(
+      jsonResponse(403, {
+        error: { message: 'access denied', type: 'forbidden' }
+      })
+    )
+
+    const error = await makeClient()
+      .getDraft('wf-x')
+      .catch((e: unknown) => e)
+
+    expect((error as AgentApiError).message).toBe('access denied')
+    expect((error as AgentApiError).status).toBe(403)
+  })
+
+  it('falls back to statusText and undefined body for a non-JSON error response', async () => {
+    respond(
+      new Response('gateway boom', { status: 502, statusText: 'Bad Gateway' })
+    )
+
+    const error = await makeClient()
+      .getMessages('t1')
+      .catch((e: unknown) => e)
+
+    const apiError = error as AgentApiError
+    expect(apiError.message).toBe('Bad Gateway')
+    expect(apiError.status).toBe(502)
+    expect(apiError.body).toBeUndefined()
+  })
+
+  it('throws zod when a success body violates the response schema (anti-drift)', async () => {
+    respond(jsonResponse(200, { wrong: 'shape' }))
+
+    const error = await makeClient()
+      .getDraft('wf-1')
+      .catch((e: unknown) => e)
+
+    expect(error).toBeInstanceOf(Error)
+    expect(error).not.toBeInstanceOf(AgentApiError)
+  })
+})

src/workbench/extensions/agent/services/agent/agentRestClient.ts

@@ -0,0 +1,216 @@
+import type { z } from 'zod'
+
+import { api } from '@/scripts/api'
+
+import {
+  zAgentCancelAccepted,
+  zAgentDraftSnapshot,
+  zAgentError,
+  zAgentMessages,
+  zAgentThreads,
+  zAgentTurnAccepted,
+  zCloudWorkflowIndex,
+  zUploadImageResult
+} from '../../schemas/agentApiSchema'
+import type {
+  AgentCancelAccepted,
+  AgentDraftSnapshot,
+  AgentMessages,
+  AgentThreadSummary,
+  AgentTurnAccepted,
+  CloudWorkflowEntry,
+  UploadImageResult
+} from '../../schemas/agentApiSchema'
+
+const CLOUD_WORKFLOW_PAGE_SIZE = 100
+const CLOUD_WORKFLOW_MAX_PAGES = 5
+
+export class AgentApiError extends Error {
+  readonly status: number
+  readonly body: unknown
+
+  constructor(message: string, status: number, body: unknown) {
+    super(message)
+    this.name = 'AgentApiError'
+    this.status = status
+    this.body = body
+  }
+}
+
+export interface DraftUpload {
+  content: unknown
+  version: number | null
+}
+
+interface OpenTabEntry {
+  workflow_id: string
+  name: string
+}
+
+export interface OpenTabsSnapshot {
+  open_tabs: OpenTabEntry[]
+  current_tab?: string
+}
+
+export interface PostMessageInput {
+  content: string
+  workflowId?: string
+  selection?: Record<string, unknown>
+  attachments?: string[]
+  draft?: DraftUpload
+  tabs?: OpenTabsSnapshot
+}
+
+interface IngestErrorBody {
+  error: { message: string }
+}
+
+function isIngestErrorBody(body: unknown): body is IngestErrorBody {
+  if (typeof body !== 'object' || body === null) return false
+  const { error } = body as { error?: unknown }
+  return (
+    typeof error === 'object' &&
+    error !== null &&
+    typeof (error as { message?: unknown }).message === 'string'
+  )
+}
+
+export function createAgentRestClient() {
+  async function toApiError(response: Response): Promise<AgentApiError> {
+    const text = await response.text()
+    let body: unknown
+    try {
+      body = text.length > 0 ? JSON.parse(text) : undefined
+    } catch {
+      body = undefined
+    }
+    const plain = zAgentError.safeParse(body)
+    const message = plain.success
+      ? plain.data.error
+      : isIngestErrorBody(body)
+        ? body.error.message
+        : response.statusText
+    return new AgentApiError(message, response.status, body)
+  }
+
+  async function request<T>(
+    route: string,
+    init: RequestInit,
+    schema: z.ZodType<T>
+  ): Promise<T> {
+    const response = await api.fetchApi(route, init)
+    if (!response.ok) throw await toApiError(response)
+    return schema.parse(await response.json())
+  }
+
+  function jsonInit(method: string, body: unknown): RequestInit {
+    return {
+      method,
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(body)
+    }
+  }
+
+  async function postMessage(
+    threadId: string,
+    req: PostMessageInput
+  ): Promise<AgentTurnAccepted> {
+    const body: Record<string, unknown> = { content: req.content }
+    if (req.workflowId !== undefined) body.workflow_id = req.workflowId
+    if (req.tabs !== undefined) {
+      body.open_tabs = req.tabs.open_tabs
+      if (req.tabs.current_tab !== undefined)
+        body.current_tab = req.tabs.current_tab
+    }
+    if (req.selection !== undefined) body.selection = req.selection
+    if (req.attachments !== undefined) body.attachments = req.attachments
+    if (req.draft !== undefined) body.draft = req.draft
+    return request(
+      `/agent/threads/${threadId}/messages`,
+      jsonInit('POST', body),
+      zAgentTurnAccepted
+    )
+  }
+
+  async function getMessages(threadId: string): Promise<AgentMessages> {
+    return request(
+      `/agent/threads/${threadId}/messages`,
+      { method: 'GET' },
+      zAgentMessages
+    )
+  }
+
+  async function listThreads(): Promise<AgentThreadSummary[]> {
+    const page = await request(
+      '/agent/threads',
+      { method: 'GET' },
+      zAgentThreads
+    )
+    return page.threads
+  }
+
+  async function listCloudWorkflows(): Promise<CloudWorkflowEntry[]> {
+    const entries: CloudWorkflowEntry[] = []
+    let hasMore = false
+    for (let page = 0; page < CLOUD_WORKFLOW_MAX_PAGES; page++) {
+      const result = await request(
+        `/workflows?limit=${CLOUD_WORKFLOW_PAGE_SIZE}&offset=${page * CLOUD_WORKFLOW_PAGE_SIZE}`,
+        { method: 'GET' },
+        zCloudWorkflowIndex
+      )
+      entries.push(...result.data)
+      hasMore = result.pagination.has_more
+      if (!hasMore) break
+    }
+    if (hasMore)
+      console.warn(
+        `[agent] cloud workflow index truncated at ${entries.length} entries`
+      )
+    return entries
+  }
+
+  async function cancelMessage(
+    threadId: string,
+    messageId: string
+  ): Promise<AgentCancelAccepted> {
+    return request(
+      `/agent/threads/${threadId}/messages/${messageId}/cancel`,
+      jsonInit('POST', {}),
+      zAgentCancelAccepted
+    )
+  }
+
+  async function getDraft(workflowId: string): Promise<AgentDraftSnapshot> {
+    const query = encodeURIComponent(workflowId)
+    return request(
+      `/agent/draft?workflow_id=${query}`,
+      { method: 'GET' },
+      zAgentDraftSnapshot
+    )
+  }
+
+  async function uploadImage(
+    image: Blob,
+    filename: string
+  ): Promise<UploadImageResult> {
+    const form = new FormData()
+    form.append('image', image, filename)
+    return request(
+      '/upload/image',
+      { method: 'POST', body: form },
+      zUploadImageResult
+    )
+  }
+
+  return {
+    postMessage,
+    getMessages,
+    listThreads,
+    listCloudWorkflows,
+    cancelMessage,
+    getDraft,
+    uploadImage
+  }
+}
+
+export type AgentRestClient = ReturnType<typeof createAgentRestClient>

src/workbench/extensions/agent/stores/agent/agentChatHistoryStore.test.ts

@@ -0,0 +1,81 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it } from 'vitest'
+
+import type { ChatSession } from './agentChatHistoryStore'
+import {
+  groupSessionsByRecency,
+  useAgentChatHistoryStore
+} from './agentChatHistoryStore'
+
+const NOW = new Date(2026, 2, 15, 12, 0, 0).getTime()
+const DAY = 86_400_000
+
+const session = (id: string, updatedAt: number): ChatSession => ({
+  id,
+  title: id,
+  updatedAt
+})
+
+describe('groupSessionsByRecency', () => {
+  it('buckets by recency, newest first, with the active session as Current', () => {
+    const sessions = [
+      session('now', NOW - 1_000),
+      session('active', NOW - 5 * DAY),
+      session('earlyToday', NOW - 6 * 3_600_000),
+      session('yesterday', NOW - DAY),
+      session('lastWeek', NOW - 4 * DAY)
+    ]
+    const groups = groupSessionsByRecency(sessions, 'active', NOW)
+
+    expect(groups.current.map((s) => s.id)).toEqual(['active'])
+    expect(groups.today.map((s) => s.id)).toEqual(['now', 'earlyToday'])
+    expect(groups.yesterday.map((s) => s.id)).toEqual(['yesterday'])
+    expect(groups.earlier.map((s) => s.id)).toEqual(['lastWeek'])
+  })
+
+  it('places everything in earlier when nothing is recent and none is active', () => {
+    const groups = groupSessionsByRecency(
+      [session('old', NOW - 30 * DAY)],
+      null,
+      NOW
+    )
+    expect(groups.current).toHaveLength(0)
+    expect(groups.earlier.map((s) => s.id)).toEqual(['old'])
+  })
+
+  it('buckets the prior evening as yesterday across a spring-forward midnight', () => {
+    const now = new Date(2026, 2, 8, 2, 30).getTime()
+    const priorEvening = new Date(2026, 2, 7, 23, 30).getTime()
+    const groups = groupSessionsByRecency(
+      [session('priorEvening', priorEvening)],
+      null,
+      now
+    )
+
+    expect(groups.yesterday.map((s) => s.id)).toEqual(['priorEvening'])
+    expect(groups.earlier).toHaveLength(0)
+  })
+})
+
+describe('useAgentChatHistoryStore', () => {
+  beforeEach(() => setActivePinia(createPinia()))
+
+  it('clears the active id when the active session is removed', () => {
+    const store = useAgentChatHistoryStore()
+    store.replaceAll([session('a', 1)])
+    store.setActive('a')
+    store.remove('a')
+
+    expect(store.activeId).toBeNull()
+    expect(store.sessions).toHaveLength(0)
+  })
+
+  it('keeps the active id when a different session is removed', () => {
+    const store = useAgentChatHistoryStore()
+    store.replaceAll([session('a', 1), session('b', 2)])
+    store.setActive('a')
+    store.remove('b')
+
+    expect(store.activeId).toBe('a')
+  })
+})

src/workbench/extensions/agent/stores/agent/agentChatHistoryStore.ts

@@ -0,0 +1,77 @@
+import { useTimestamp } from '@vueuse/core'
+import { defineStore } from 'pinia'
+import { computed, ref } from 'vue'
+
+export interface ChatSession {
+  id: string
+  title: string
+  updatedAt: number
+}
+
+export interface HistoryGroups {
+  current: ChatSession[]
+  today: ChatSession[]
+  yesterday: ChatSession[]
+  earlier: ChatSession[]
+}
+
+function startOfLocalDay(now: number): number {
+  const date = new Date(now)
+  date.setHours(0, 0, 0, 0)
+  return date.getTime()
+}
+
+export function groupSessionsByRecency(
+  sessions: ChatSession[],
+  activeId: string | null,
+  now: number
+): HistoryGroups {
+  const startToday = startOfLocalDay(now)
+  const startYesterday = startOfLocalDay(startToday - 1)
+  const groups: HistoryGroups = {
+    current: [],
+    today: [],
+    yesterday: [],
+    earlier: []
+  }
+  const ordered = [...sessions].sort((a, b) => b.updatedAt - a.updatedAt)
+  for (const session of ordered) {
+    if (session.id === activeId) groups.current.push(session)
+    else if (session.updatedAt >= startToday) groups.today.push(session)
+    else if (session.updatedAt >= startYesterday) groups.yesterday.push(session)
+    else groups.earlier.push(session)
+  }
+  return groups
+}
+
+export const useAgentChatHistoryStore = defineStore('agentChatHistory', () => {
+  const sessions = ref<ChatSession[]>([])
+  const activeId = ref<string | null>(null)
+  const now = useTimestamp({ interval: 60_000 })
+
+  const grouped = computed(() =>
+    groupSessionsByRecency(sessions.value, activeId.value, now.value)
+  )
+
+  function remove(id: string): void {
+    sessions.value = sessions.value.filter((item) => item.id !== id)
+    if (activeId.value === id) activeId.value = null
+  }
+
+  function replaceAll(next: ChatSession[]): void {
+    sessions.value = next
+  }
+
+  function setActive(id: string | null): void {
+    activeId.value = id
+  }
+
+  return {
+    sessions,
+    activeId,
+    grouped,
+    remove,
+    replaceAll,
+    setActive
+  }
+})

src/workbench/extensions/agent/stores/agent/agentConversationEntries.test.ts

@@ -0,0 +1,48 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it } from 'vitest'
+
+import type { TurnId } from '../../schemas/agentApiSchema'
+import { zAgentWsEvent } from '../../schemas/agentApiSchema'
+import type { AgentChatEvent } from '../../services/agent/agentEventTransport'
+import { useAgentConversationStore } from './agentConversationStore'
+
+const done = (id: string): AgentChatEvent =>
+  zAgentWsEvent.parse({
+    type: 'agent_message_done',
+    data: { message_id: id, thread_id: 'th', usage: null }
+  }) as AgentChatEvent
+
+const T1 = 't1' as TurnId
+const T2 = 't2' as TurnId
+
+describe('agentConversationStore entries (user + assistant interleave)', () => {
+  beforeEach(() => setActivePinia(createPinia()))
+
+  it('pairs each recorded user prompt before its assistant turn, in order', () => {
+    const store = useAgentConversationStore()
+    store.recordUser(T1, 'first prompt')
+    store.startTurn(T1)
+    store.ingest(done('t1'))
+    store.recordUser(T2, 'second prompt')
+    store.startTurn(T2)
+
+    const roles = store.entries.map((e) => e.role)
+    expect(roles).toEqual(['user', 'assistant', 'user', 'assistant'])
+    const first = store.entries[0]
+    expect(first.role === 'user' && first.text).toBe('first prompt')
+  })
+
+  it('renders an assistant turn with no recorded prompt as a bare assistant entry', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    expect(store.entries.map((e) => e.role)).toEqual(['assistant'])
+  })
+
+  it('reset clears recorded user prompts too', () => {
+    const store = useAgentConversationStore()
+    store.recordUser(T1, 'gone')
+    store.startTurn(T1)
+    store.reset()
+    expect(store.entries).toHaveLength(0)
+  })
+})

src/workbench/extensions/agent/stores/agent/agentConversationStore.test.ts

@@ -0,0 +1,205 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { nextTick, watch } from 'vue'
+
+import type { TurnId } from '../../schemas/agentApiSchema'
+import { zAgentWsEvent } from '../../schemas/agentApiSchema'
+import type { AgentChatEvent } from '../../services/agent/agentEventTransport'
+
+import { useAgentConversationStore } from './agentConversationStore'
+
+const chat = (raw: unknown): AgentChatEvent =>
+  zAgentWsEvent.parse(raw) as AgentChatEvent
+const thinking = (id: string, delta: string): AgentChatEvent =>
+  chat({
+    type: 'agent_thinking',
+    data: { delta, message_id: id, thread_id: 'th' }
+  })
+const delta = (id: string, text: string): AgentChatEvent =>
+  chat({
+    type: 'agent_message_delta',
+    data: { delta: text, message_id: id, thread_id: 'th' }
+  })
+const toolCall = (id: string, name: string, status: string): AgentChatEvent =>
+  chat({
+    type: 'agent_tool_call',
+    data: { tool_name: name, status, args: [], message_id: id, thread_id: 'th' }
+  })
+const done = (id: string): AgentChatEvent =>
+  chat({
+    type: 'agent_message_done',
+    data: { message_id: id, thread_id: 'th', usage: null }
+  })
+
+const T1 = 't1' as TurnId
+const T2 = 't2' as TurnId
+
+describe('useAgentConversationStore', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia())
+  })
+
+  it('(M1) fires a deep watch on messages when a MID-turn delta event lands', async () => {
+    const store = useAgentConversationStore()
+    const spy = vi.fn()
+    watch(() => store.messages, spy, { deep: true })
+
+    store.startTurn(T1)
+    await nextTick()
+    spy.mockClear()
+
+    store.ingest(delta('t1', 'streaming delta'))
+    await nextTick()
+
+    expect(spy).toHaveBeenCalled()
+    expect(store.messages[0].parts.map((p) => p.type)).toEqual(['text'])
+  })
+
+  it('(M2) isStreaming is false after abortActiveTurn() with no done', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'half a th'))
+    expect(store.isStreaming).toBe(true)
+
+    store.abortActiveTurn()
+
+    expect(store.isStreaming).toBe(false)
+    expect(store.messages[0].streaming).toBe(false)
+    expect(store.messages).toHaveLength(1)
+    store.abortActiveTurn()
+    expect(store.messages).toHaveLength(1)
+  })
+
+  it('settles the turn on done and reports idle', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'answer'))
+    store.ingest(done('t1'))
+
+    expect(store.isStreaming).toBe(false)
+    expect(store.status).toBe('idle')
+    expect(store.activeTurnId).toBeNull()
+  })
+
+  it('reports thinking vs streaming status', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(thinking('t1', 'planning'))
+    expect(store.status).toBe('thinking')
+    store.ingest(delta('t1', 'go'))
+    expect(store.status).toBe('streaming')
+  })
+
+  it('drops events for a foreign message_id (store owns turn filtering)', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'keep'))
+
+    store.ingest(delta('t2', 'DROP ME'))
+
+    const parts = store.messages[0].parts
+    expect(parts).toHaveLength(1)
+    expect(parts[0]).toMatchObject({ type: 'text', text: 'keep' })
+  })
+
+  it('starting a new turn aborts a prior in-flight turn', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'unfinished'))
+
+    store.startTurn(T2)
+
+    expect(store.messages).toHaveLength(2)
+    expect(store.messages[0].streaming).toBe(false)
+    expect(store.messages[1].streaming).toBe(true)
+    expect(store.activeTurnId).toBe(T2)
+  })
+
+  it('ignores ingest with no active turn', () => {
+    const store = useAgentConversationStore()
+    store.ingest(delta('t1', 'orphan'))
+    expect(store.messages).toHaveLength(0)
+  })
+
+  it('folds a tool_call into the active turn', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(toolCall('t1', 'add_node', 'ok'))
+    expect(store.messages[0].parts[0]).toMatchObject({
+      type: 'tool',
+      name: 'add_node',
+      ok: true
+    })
+  })
+
+  it('recordFailedSend renders [user, assistant(notice)] and leaves the turn idle', () => {
+    const store = useAgentConversationStore()
+    store.recordFailedSend('local-error-1' as TurnId, 'boom', 'send failed')
+
+    const entries = store.entries
+    expect(entries.map((e) => e.role)).toEqual(['user', 'assistant'])
+    expect(entries[0]).toMatchObject({ role: 'user', text: 'boom' })
+    const assistant = entries[1]
+    expect(assistant.role).toBe('assistant')
+    if (assistant.role === 'assistant') {
+      expect(assistant.streaming).toBe(false)
+      expect(assistant.parts).toEqual([
+        { type: 'notice', level: 'error', text: 'send failed' }
+      ])
+    }
+    expect(store.activeTurnId).toBeNull()
+    expect(store.isStreaming).toBe(false)
+  })
+
+  it('recordFailedSend does not disturb an already-active turn', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'live'))
+
+    store.recordFailedSend('local-error-1' as TurnId, 'oops', 'send failed')
+
+    expect(store.activeTurnId).toBe(T1)
+    expect(store.isStreaming).toBe(true)
+  })
+
+  it('reset wipes the whole conversation, distinct from abortActiveTurn', () => {
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.ingest(delta('t1', 'gone'))
+    store.reset()
+    expect(store.messages).toHaveLength(0)
+    expect(store.activeTurnId).toBeNull()
+    expect(store.isStreaming).toBe(false)
+  })
+
+  it('holds the thread id and clears it on reset', () => {
+    const store = useAgentConversationStore()
+    store.setThreadId('th-7')
+    expect(store.threadId).toBe('th-7')
+    store.reset()
+    expect(store.threadId).toBeNull()
+  })
+
+  it('revokes transcript blob previews on reset and on hydrate', () => {
+    const revoke = vi.spyOn(URL, 'revokeObjectURL').mockImplementation(() => {})
+    const store = useAgentConversationStore()
+    store.startTurn(T1)
+    store.recordUser(T1, 'with picture', [
+      { name: 'a.png', previewUrl: 'blob:a' }
+    ])
+    store.reset()
+    expect(revoke).toHaveBeenCalledWith('blob:a')
+
+    revoke.mockClear()
+    store.startTurn(T2)
+    store.recordUser(T2, 'again', [{ name: 'b.png', previewUrl: 'blob:b' }])
+    store.hydrate([])
+    expect(revoke).toHaveBeenCalledWith('blob:b')
+    expect(
+      store.entries.every(
+        (entry) => entry.role !== 'user' || entry.attachments === undefined
+      )
+    ).toBe(true)
+    revoke.mockRestore()
+  })
+})

src/workbench/extensions/agent/stores/agent/agentConversationStore.ts

@@ -0,0 +1,296 @@
+import { defineStore } from 'pinia'
+import { computed, ref } from 'vue'
+
+import type { AgentMessages, TurnId } from '../../schemas/agentApiSchema'
+import type {
+  AgentChatEvent,
+  AgentEventTransport
+} from '../../services/agent/agentEventTransport'
+import { createAgentEventTransport } from '../../services/agent/agentEventTransport'
+import type { AssistantMessage } from '../../services/agent/agentMessageParts'
+import { createAssistantMessage } from '../../services/agent/agentMessageParts'
+
+export type ConversationStatus = 'idle' | 'thinking' | 'streaming'
+
+export interface UserAttachment {
+  name: string
+  previewUrl?: string
+}
+
+interface UserEntry {
+  id: TurnId
+  role: 'user'
+  text: string
+  attachments?: UserAttachment[]
+  tags?: string[]
+}
+
+export type ConversationEntry = UserEntry | AssistantMessage
+
+interface BackgroundTurn {
+  turnId: TurnId
+  message: AssistantMessage
+  transport: AgentEventTransport
+  userText: string | undefined
+  settled: boolean
+}
+
+export const useAgentConversationStore = defineStore(
+  'agentConversation',
+  () => {
+    const messages = ref<AssistantMessage[]>([])
+    const activeTurnId = ref<TurnId | null>(null)
+    const threadId = ref<string | null>(null)
+    const userTexts = ref(new Map<TurnId, string>())
+    const userAttachments = ref(new Map<TurnId, UserAttachment[]>())
+    const userTags = ref(new Map<TurnId, string[]>())
+
+    let transport: AgentEventTransport | null = null
+    let liveMessage: AssistantMessage | null = null
+    const backgroundTurns = new Map<string, BackgroundTurn>()
+    const activeIndex = ref(-1)
+
+    function replaceActive(message: AssistantMessage): void {
+      const index = activeIndex.value
+      if (index >= 0 && messages.value[index]?.id === message.id)
+        messages.value[index] = message
+    }
+
+    function recordUser(
+      turnId: TurnId,
+      text: string,
+      attachments?: UserAttachment[],
+      tags?: string[]
+    ): void {
+      userTexts.value.set(turnId, text)
+      if (attachments !== undefined && attachments.length > 0)
+        userAttachments.value.set(turnId, attachments)
+      if (tags !== undefined && tags.length > 0)
+        userTags.value.set(turnId, tags)
+    }
+
+    function setThreadId(id: string | null): void {
+      threadId.value = id
+    }
+
+    function recordFailedSend(
+      turnId: TurnId,
+      text: string,
+      noticeText: string
+    ): void {
+      userTexts.value.set(turnId, text)
+      const message = createAssistantMessage(turnId)
+      message.streaming = false
+      message.parts = [{ type: 'notice', level: 'error', text: noticeText }]
+      messages.value.push(message)
+    }
+
+    function startTurn(turnId: TurnId): void {
+      if (transport) abortActiveTurn()
+      const message = createAssistantMessage(turnId)
+      liveMessage = message
+      activeIndex.value = messages.value.push(message) - 1
+      activeTurnId.value = turnId
+      transport = createAgentEventTransport(message, replaceActive)
+    }
+
+    function ingest(event: AgentChatEvent): void {
+      if (transport && event.data.message_id === activeTurnId.value) {
+        if (event.type === 'agent_message_done') {
+          transport.settle()
+          clearActive()
+          return
+        }
+        transport.ingest(event)
+        return
+      }
+      const entry = backgroundTurns.get(event.data.thread_id)
+      if (!entry || entry.turnId !== event.data.message_id) return
+      if (event.type === 'agent_message_done') {
+        entry.transport.settle()
+        entry.settled = true
+        return
+      }
+      entry.transport.ingest(event)
+    }
+
+    function abortActiveTurn(): void {
+      if (!transport) return
+      transport.settle()
+      clearActive()
+    }
+
+    function stashActiveTurn(): void {
+      if (!transport || liveMessage === null) return
+      if (threadId.value === null || activeTurnId.value === null) {
+        abortActiveTurn()
+        return
+      }
+      backgroundTurns.set(threadId.value, {
+        turnId: activeTurnId.value,
+        message: liveMessage,
+        transport,
+        userText: userTexts.value.get(activeTurnId.value),
+        settled: false
+      })
+      clearActive()
+    }
+
+    function resumeBackgroundTurn(): void {
+      if (threadId.value === null) return
+      const entry = backgroundTurns.get(threadId.value)
+      if (!entry) return
+      backgroundTurns.delete(threadId.value)
+      const kept = messages.value.filter((m) => m.id !== entry.turnId)
+      const last = kept.at(-1)
+      let poppedHydratedCopy = false
+      if (
+        kept.length === messages.value.length &&
+        last &&
+        entry.userText !== undefined &&
+        userTexts.value.get(last.id) === entry.userText
+      ) {
+        kept.pop()
+        userTexts.value.delete(last.id)
+        poppedHydratedCopy = true
+      }
+      if (entry.settled && !poppedHydratedCopy) {
+        if (entry.userText === undefined) return
+        const hydratedElsewhere = [...userTexts.value.values()].includes(
+          entry.userText
+        )
+        if (hydratedElsewhere) return
+      }
+      if (entry.userText !== undefined && !userTexts.value.has(entry.turnId))
+        userTexts.value.set(entry.turnId, entry.userText)
+      const index = kept.push(entry.message) - 1
+      messages.value = kept
+      if (entry.settled) return
+      activeIndex.value = index
+      activeTurnId.value = entry.turnId
+      transport = entry.transport
+      liveMessage = entry.message
+    }
+
+    function settleBackgroundTurn(turnId: string): void {
+      for (const [key, entry] of backgroundTurns) {
+        if (entry.turnId !== turnId) continue
+        entry.transport.settle()
+        backgroundTurns.delete(key)
+        return
+      }
+    }
+
+    function dropBackgroundTurns(): void {
+      for (const entry of backgroundTurns.values()) entry.transport.settle()
+      backgroundTurns.clear()
+    }
+
+    function clearActive(): void {
+      transport = null
+      liveMessage = null
+      activeIndex.value = -1
+      activeTurnId.value = null
+    }
+
+    function dropAttachmentPreviews(): void {
+      for (const attachments of userAttachments.value.values()) {
+        for (const { previewUrl } of attachments) {
+          if (previewUrl?.startsWith('blob:')) URL.revokeObjectURL(previewUrl)
+        }
+      }
+      userAttachments.value = new Map()
+    }
+
+    function reset(): void {
+      messages.value = []
+      userTexts.value = new Map()
+      userTags.value = new Map()
+      dropAttachmentPreviews()
+      threadId.value = null
+      clearActive()
+    }
+
+    function hydrate(history: AgentMessages): void {
+      clearActive()
+      const texts = new Map<TurnId, string>()
+      const assistants = new Map<TurnId, AssistantMessage>()
+      const turnOrder: TurnId[] = []
+      for (const row of [...history].sort((a, b) => a.seq - b.seq)) {
+        const turnId = row.turn_id as TurnId
+        if (!turnOrder.includes(turnId)) turnOrder.push(turnId)
+        const text =
+          typeof row.content?.text === 'string' ? row.content.text : ''
+        if (row.role === 'user') texts.set(turnId, text)
+        if (row.role === 'assistant') {
+          const message =
+            assistants.get(turnId) ?? createAssistantMessage(turnId)
+          message.streaming = false
+          if (text)
+            message.parts = [
+              ...message.parts,
+              { type: 'text', text, state: 'done' }
+            ]
+          assistants.set(turnId, message)
+        }
+      }
+      messages.value = turnOrder.map((turnId) => {
+        const message = assistants.get(turnId) ?? createAssistantMessage(turnId)
+        message.streaming = false
+        return message
+      })
+      userTexts.value = texts
+      userTags.value = new Map()
+      dropAttachmentPreviews()
+    }
+
+    const entries = computed<ConversationEntry[]>(() =>
+      messages.value.flatMap((message) => {
+        const text = userTexts.value.get(message.id)
+        return text === undefined
+          ? [message]
+          : [
+              {
+                id: message.id,
+                role: 'user',
+                text,
+                attachments: userAttachments.value.get(message.id),
+                tags: userTags.value.get(message.id)
+              },
+              message
+            ]
+      })
+    )
+
+    const activeMessage = computed(() =>
+      activeIndex.value >= 0 ? messages.value[activeIndex.value] : null
+    )
+    const isStreaming = computed(() => activeMessage.value?.streaming ?? false)
+    const status = computed<ConversationStatus>(() => {
+      const message = activeMessage.value
+      if (!message?.streaming) return 'idle'
+      return message.thinking ? 'thinking' : 'streaming'
+    })
+
+    return {
+      messages,
+      entries,
+      activeTurnId,
+      threadId,
+      isStreaming,
+      status,
+      recordUser,
+      setThreadId,
+      recordFailedSend,
+      startTurn,
+      ingest,
+      abortActiveTurn,
+      stashActiveTurn,
+      resumeBackgroundTurn,
+      settleBackgroundTurn,
+      dropBackgroundTurns,
+      reset,
+      hydrate
+    }
+  }
+)

src/workbench/extensions/agent/stores/agent/agentDraftStore.test.ts

@@ -0,0 +1,217 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it } from 'vitest'
+
+import type {
+  AgentDraftSnapshot,
+  DraftPatchData,
+  DraftVersionData
+} from '../../schemas/agentApiSchema'
+
+import { useAgentDraftStore } from './agentDraftStore'
+
+const WORKFLOW = 'a81718a4-02ae-41e6-ae85-c33b7bb880f6'
+const OTHER_WORKFLOW = 'b90000a0-0000-0000-0000-000000000000'
+
+function graphAt(cfg: number): Record<string, unknown> {
+  return {
+    last_node_id: 1,
+    links: [],
+    nodes: [
+      {
+        id: 1,
+        type: 'KSampler',
+        widgets_values: [0, 'fixed', 12, cfg, 'euler', 'normal', 1]
+      }
+    ]
+  }
+}
+
+function patch(
+  version: number,
+  baseVersion: number,
+  workflow_id = WORKFLOW
+): DraftPatchData {
+  return {
+    base_version: baseVersion,
+    version,
+    content: graphAt(version),
+    workflow_id
+  }
+}
+
+function heartbeat(version: number, workflow_id = WORKFLOW): DraftVersionData {
+  return { version, workflow_id }
+}
+
+function snapshot(version: number): AgentDraftSnapshot {
+  return { content: graphAt(version), version }
+}
+
+describe('useAgentDraftStore', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia())
+  })
+
+  describe('applyPatch monotonic adoption', () => {
+    it('adopts increasing versions 24 -> 25 -> 26 (base_version gap tolerated)', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.adoptSnapshot(snapshot(24))
+
+      expect(store.applyPatch(patch(25, 24))).toBe(true)
+      expect(store.version).toBe(25)
+
+      expect(store.applyPatch(patch(27, 26))).toBe(true)
+      expect(store.version).toBe(27)
+      expect(store.content).toEqual(graphAt(27))
+    })
+
+    it('adopts the first patch when unversioned but bound', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      expect(store.version).toBeNull()
+      expect(store.applyPatch(patch(25, 24))).toBe(true)
+      expect(store.version).toBe(25)
+      expect(store.content).toEqual(graphAt(25))
+    })
+
+    it('ignores a duplicate version (same version re-sent)', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      expect(store.applyPatch(patch(25, 24))).toBe(false)
+      expect(store.version).toBe(25)
+      expect(store.content).toEqual(graphAt(25))
+    })
+
+    it('ignores a lower version (stale patch)', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(26, 25))
+      expect(store.applyPatch(patch(25, 24))).toBe(false)
+      expect(store.version).toBe(26)
+      expect(store.content).toEqual(graphAt(26))
+    })
+
+    it('ignores a foreign workflow_id and does not mutate state', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      expect(store.applyPatch(patch(26, 25, OTHER_WORKFLOW))).toBe(false)
+      expect(store.version).toBe(25)
+      expect(store.content).toEqual(graphAt(25))
+    })
+
+    it('ignores every patch while unbound', () => {
+      const store = useAgentDraftStore()
+      expect(store.applyPatch(patch(25, 24))).toBe(false)
+      expect(store.content).toBeNull()
+      expect(store.version).toBeNull()
+    })
+  })
+
+  describe('bind', () => {
+    it('clears content/version when binding a different workflow', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      expect(store.content).toEqual(graphAt(25))
+
+      store.bind(OTHER_WORKFLOW)
+      expect(store.workflowId).toBe(OTHER_WORKFLOW)
+      expect(store.content).toBeNull()
+      expect(store.version).toBeNull()
+    })
+
+    it('re-binding the same workflow preserves state', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      store.bind(WORKFLOW)
+      expect(store.version).toBe(25)
+      expect(store.content).toEqual(graphAt(25))
+    })
+  })
+
+  describe('checkHeartbeat', () => {
+    it('is foreign when unbound', () => {
+      const store = useAgentDraftStore()
+      expect(store.checkHeartbeat(heartbeat(24))).toBe('foreign')
+    })
+
+    it('is foreign when the workflow mismatches', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      expect(store.checkHeartbeat(heartbeat(24, OTHER_WORKFLOW))).toBe(
+        'foreign'
+      )
+    })
+
+    it('is behind when we hold no version yet', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      expect(store.checkHeartbeat(heartbeat(24))).toBe('behind')
+    })
+
+    it('is behind when the server is ahead', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      expect(store.checkHeartbeat(heartbeat(26))).toBe('behind')
+    })
+
+    it('is in-sync at the same version', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(26, 25))
+      expect(store.checkHeartbeat(heartbeat(26))).toBe('in-sync')
+    })
+
+    it('is in-sync when the heartbeat trails our version', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(26, 25))
+      expect(store.checkHeartbeat(heartbeat(24))).toBe('in-sync')
+    })
+  })
+
+  describe('adoptSnapshot', () => {
+    it('adopts onto an empty store', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.adoptSnapshot(snapshot(24))
+      expect(store.version).toBe(24)
+      expect(store.content).toEqual(graphAt(24))
+    })
+
+    it('re-adopts at an equal version (idempotent refresh)', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.adoptSnapshot(snapshot(25))
+      store.adoptSnapshot(snapshot(25))
+      expect(store.version).toBe(25)
+      expect(store.content).toEqual(graphAt(25))
+    })
+
+    it('ignores an older snapshot', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.adoptSnapshot(snapshot(26))
+      store.adoptSnapshot(snapshot(24))
+      expect(store.version).toBe(26)
+      expect(store.content).toEqual(graphAt(26))
+    })
+  })
+
+  describe('reset', () => {
+    it('clears all three refs', () => {
+      const store = useAgentDraftStore()
+      store.bind(WORKFLOW)
+      store.applyPatch(patch(25, 24))
+      store.reset()
+      expect(store.workflowId).toBeNull()
+      expect(store.content).toBeNull()
+      expect(store.version).toBeNull()
+    })
+  })
+})

src/workbench/extensions/agent/stores/agent/agentDraftStore.ts

@@ -0,0 +1,60 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+
+import type {
+  AgentDraftSnapshot,
+  DraftPatchData,
+  DraftVersionData
+} from '../../schemas/agentApiSchema'
+
+export type HeartbeatState = 'in-sync' | 'behind' | 'foreign'
+
+export const useAgentDraftStore = defineStore('agentDraft', () => {
+  const workflowId = ref<string | null>(null)
+  const content = ref<Record<string, unknown> | null>(null)
+  const version = ref<number | null>(null)
+
+  function bind(id: string): void {
+    if (id === workflowId.value) return
+    workflowId.value = id
+    content.value = null
+    version.value = null
+  }
+
+  function applyPatch(data: DraftPatchData): boolean {
+    if (data.workflow_id !== workflowId.value) return false
+    if (version.value !== null && data.version <= version.value) return false
+    content.value = data.content
+    version.value = data.version
+    return true
+  }
+
+  function checkHeartbeat(data: DraftVersionData): HeartbeatState {
+    if (data.workflow_id !== workflowId.value) return 'foreign'
+    if (version.value === null || version.value < data.version) return 'behind'
+    return 'in-sync'
+  }
+
+  function adoptSnapshot(snapshot: AgentDraftSnapshot): void {
+    if (version.value !== null && snapshot.version < version.value) return
+    content.value = snapshot.content
+    version.value = snapshot.version
+  }
+
+  function reset(): void {
+    workflowId.value = null
+    content.value = null
+    version.value = null
+  }
+
+  return {
+    workflowId,
+    content,
+    version,
+    bind,
+    applyPatch,
+    checkHeartbeat,
+    adoptSnapshot,
+    reset
+  }
+})

src/workbench/extensions/agent/stores/agent/agentPanelStore.test.ts

@@ -0,0 +1,73 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+
+const telemetry = vi.hoisted(() => ({
+  trackAgentPanelOpened: vi.fn(),
+  trackAgentPanelClosed: vi.fn()
+}))
+vi.mock('@/platform/telemetry', () => ({
+  useTelemetry: () => telemetry
+}))
+
+import { useAgentPanelStore } from './agentPanelStore'
+
+describe('agentPanelStore engagement telemetry', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia())
+    vi.clearAllMocks()
+    vi.useFakeTimers()
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  it('emits opened on toggle-open and closed with the open duration', () => {
+    const store = useAgentPanelStore()
+
+    store.toggle()
+    expect(store.isOpen).toBe(true)
+    expect(telemetry.trackAgentPanelOpened).toHaveBeenCalledWith({
+      source: 'topbar_button'
+    })
+
+    vi.advanceTimersByTime(5000)
+    store.close('close_button')
+    expect(store.isOpen).toBe(false)
+    expect(telemetry.trackAgentPanelClosed).toHaveBeenCalledWith({
+      source: 'close_button',
+      open_duration_ms: 5000
+    })
+  })
+
+  it('toggling an open panel closes it attributed to the topbar button', () => {
+    const store = useAgentPanelStore()
+
+    store.toggle()
+    vi.advanceTimersByTime(250)
+    store.toggle()
+    expect(telemetry.trackAgentPanelClosed).toHaveBeenCalledWith({
+      source: 'topbar_button',
+      open_duration_ms: 250
+    })
+  })
+
+  it('reports a null duration when the panel was opened by a direct state write', () => {
+    const store = useAgentPanelStore()
+
+    store.isOpen = true
+    store.close('close_button')
+    expect(telemetry.trackAgentPanelClosed).toHaveBeenCalledWith({
+      source: 'close_button',
+      open_duration_ms: null
+    })
+  })
+
+  it('ignores a close while already closed so flag re-syncs emit nothing', () => {
+    const store = useAgentPanelStore()
+
+    store.close('flag_disabled')
+    store.close('flag_disabled')
+    expect(telemetry.trackAgentPanelClosed).not.toHaveBeenCalled()
+  })
+})

src/workbench/extensions/agent/stores/agent/agentPanelStore.ts

@@ -0,0 +1,60 @@
+import { defineStore } from 'pinia'
+import { computed, ref } from 'vue'
+
+import { useTelemetry } from '@/platform/telemetry'
+import type { AgentPanelCloseSource } from '@/platform/telemetry/types'
+
+const PANEL_MIN_WIDTH = 420
+const PANEL_MAX_WIDTH = 960
+
+export const useAgentPanelStore = defineStore('agentPanel', () => {
+  const enabled = ref(false)
+  const isOpen = ref(false)
+  const width = ref(PANEL_MIN_WIDTH)
+
+  let openedAt: number | null = null
+
+  const isMaximized = computed(() => width.value === PANEL_MAX_WIDTH)
+
+  function open(): void {
+    if (isOpen.value) return
+    isOpen.value = true
+    openedAt = Date.now()
+    useTelemetry()?.trackAgentPanelOpened({ source: 'topbar_button' })
+  }
+
+  function close(source: AgentPanelCloseSource): void {
+    if (!isOpen.value) return
+    isOpen.value = false
+    const openDurationMs = openedAt === null ? null : Date.now() - openedAt
+    openedAt = null
+    useTelemetry()?.trackAgentPanelClosed({
+      source,
+      open_duration_ms: openDurationMs
+    })
+  }
+
+  function toggle(): void {
+    if (isOpen.value) close('topbar_button')
+    else open()
+  }
+
+  function setWidth(px: number): void {
+    width.value = Math.min(PANEL_MAX_WIDTH, Math.max(PANEL_MIN_WIDTH, px))
+  }
+
+  function toggleMaximize(): void {
+    setWidth(isMaximized.value ? PANEL_MIN_WIDTH : PANEL_MAX_WIDTH)
+  }
+
+  return {
+    enabled,
+    isOpen,
+    width,
+    isMaximized,
+    toggle,
+    close,
+    setWidth,
+    toggleMaximize
+  }
+})

src/workbench/extensions/agent/stores/agent/agentWorkflowTabBindingStore.test.ts

@@ -0,0 +1,54 @@
+import { createPinia, setActivePinia } from 'pinia'
+import { beforeEach, describe, expect, it } from 'vitest'
+import { nextTick } from 'vue'
+
+import { useAgentWorkflowTabBindingStore } from './agentWorkflowTabBindingStore'
+
+describe('agentWorkflowTabBindingStore', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    setActivePinia(createPinia())
+  })
+
+  it('resolves both directions after a bind', () => {
+    const store = useAgentWorkflowTabBindingStore()
+    store.bind('wf-1', 'workflows/a.json')
+    expect(store.tabPathFor('wf-1')).toBe('workflows/a.json')
+    expect(store.workflowIdFor('workflows/a.json')).toBe('wf-1')
+  })
+
+  it('rebinding a workflow to a new tab releases the old tab', () => {
+    const store = useAgentWorkflowTabBindingStore()
+    store.bind('wf-1', 'workflows/a.json')
+    store.bind('wf-1', 'workflows/b.json')
+    expect(store.tabPathFor('wf-1')).toBe('workflows/b.json')
+    expect(store.workflowIdFor('workflows/a.json')).toBeUndefined()
+    expect(store.workflowIdFor('workflows/b.json')).toBe('wf-1')
+  })
+
+  it('binding another workflow to an occupied tab steals it', () => {
+    const store = useAgentWorkflowTabBindingStore()
+    store.bind('wf-1', 'workflows/a.json')
+    store.bind('wf-2', 'workflows/a.json')
+    expect(store.workflowIdFor('workflows/a.json')).toBe('wf-2')
+    expect(store.tabPathFor('wf-1')).toBeUndefined()
+    expect(store.tabPathFor('wf-2')).toBe('workflows/a.json')
+  })
+
+  it('bindings survive a reload', async () => {
+    useAgentWorkflowTabBindingStore().bind('wf-1', 'workflows/a.json')
+    await nextTick()
+
+    setActivePinia(createPinia())
+    const reloaded = useAgentWorkflowTabBindingStore()
+
+    expect(reloaded.tabPathFor('wf-1')).toBe('workflows/a.json')
+    expect(reloaded.workflowIdFor('workflows/a.json')).toBe('wf-1')
+  })
+
+  it('does not resolve prototype-inherited names as bindings', () => {
+    const store = useAgentWorkflowTabBindingStore()
+    expect(store.tabPathFor('constructor')).toBeUndefined()
+    expect(store.workflowIdFor('workflows/missing.json')).toBeUndefined()
+  })
+})

src/workbench/extensions/agent/stores/agent/agentWorkflowTabBindingStore.ts

@@ -0,0 +1,41 @@
+import { useLocalStorage } from '@vueuse/core'
+import { defineStore } from 'pinia'
+
+const STORAGE_KEY = 'Comfy.Agent.WorkflowTabBindings'
+
+export const useAgentWorkflowTabBindingStore = defineStore(
+  'agentWorkflowTabBinding',
+  () => {
+    const tabByWorkflow = useLocalStorage<Record<string, string>>(
+      STORAGE_KEY,
+      {}
+    )
+
+    function bind(workflowId: string, tabPath: string): void {
+      const next = Object.fromEntries(
+        Object.entries(tabByWorkflow.value).filter(
+          ([, boundPath]) => boundPath !== tabPath
+        )
+      )
+      next[workflowId] = tabPath
+      tabByWorkflow.value = next
+    }
+
+    function tabPathFor(workflowId: string): string | undefined {
+      return Object.hasOwn(tabByWorkflow.value, workflowId)
+        ? tabByWorkflow.value[workflowId]
+        : undefined
+    }
+
+    function workflowIdFor(tabPath: string): string | undefined {
+      for (const [workflowId, boundPath] of Object.entries(
+        tabByWorkflow.value
+      )) {
+        if (boundPath === tabPath) return workflowId
+      }
+      return undefined
+    }
+
+    return { bind, tabPathFor, workflowIdFor }
+  }
+)