[refactor] Improve updates/notifications domain organization (#5590)

* [refactor] Move update-related functionality to platform/updates domain

Reorganizes release management, version compatibility, and notification functionality
following Domain-Driven Design principles, mirroring VSCode's architecture pattern.

- Move releaseService.ts to platform/updates/common/
- Move releaseStore.ts to platform/updates/common/
- Move versionCompatibilityStore.ts to platform/updates/common/
- Move useFrontendVersionMismatchWarning.ts to platform/updates/common/
- Move toastStore.ts to platform/updates/common/
- Move ReleaseNotificationToast.vue to platform/updates/components/
- Move WhatsNewPopup.vue to platform/updates/components/
- Update 25+ import paths across codebase and tests

This creates a cohesive "updates" domain containing all functionality related to
software updates, version checking, release notifications, and user communication
about application state changes.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix imports

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/scripts/api.ts

@@ -2,6 +2,7 @@ import axios from 'axios'
 import { get } from 'es-toolkit/compat'
 
 import defaultClientFeatureFlags from '@/config/clientFeatureFlags.json' with { type: 'json' }
+import { useToastStore } from '@/platform/updates/common/toastStore'
 import { WorkflowTemplates } from '@/platform/workflow/templates/types/template'
 import type {
   ComfyApiWorkflow,
@@ -38,7 +39,6 @@ import type {
 } from '@/schemas/apiSchema'
 import type { ModelFile, ModelFolderInfo } from '@/schemas/assetSchema'
 import type { ComfyNodeDef } from '@/schemas/nodeDefSchema'
-import { useToastStore } from '@/stores/toastStore'
 import type { NodeExecutionId } from '@/types/nodeIdentification'
 
 interface QueuePromptRequestBody {

src/scripts/app.ts

@@ -14,6 +14,7 @@ import {
 import type { Vector2 } from '@/lib/litegraph/src/litegraph'
 import type { IBaseWidget } from '@/lib/litegraph/src/types/widgets'
 import { useSettingStore } from '@/platform/settings/settingStore'
+import { useToastStore } from '@/platform/updates/common/toastStore'
 import { useWorkflowService } from '@/platform/workflow/core/services/workflowService'
 import { ComfyWorkflow } from '@/platform/workflow/management/stores/workflowStore'
 import { useWorkflowValidation } from '@/platform/workflow/validation/composables/useWorkflowValidation'
@@ -55,7 +56,6 @@ import { KeyComboImpl, useKeybindingStore } from '@/stores/keybindingStore'
 import { useModelStore } from '@/stores/modelStore'
 import { SYSTEM_NODE_DEFS, useNodeDefStore } from '@/stores/nodeDefStore'
 import { useSubgraphStore } from '@/stores/subgraphStore'
-import { useToastStore } from '@/stores/toastStore'
 import { useWidgetStore } from '@/stores/widgetStore'
 import { useColorPaletteStore } from '@/stores/workspace/colorPaletteStore'
 import { useWorkspaceStore } from '@/stores/workspaceStore'

src/scripts/ui/settings.ts

@@ -1,9 +1,9 @@
 import { t } from '@/i18n'
 import { useSettingStore } from '@/platform/settings/settingStore'
 import type { SettingParams } from '@/platform/settings/types'
+import { useToastStore } from '@/platform/updates/common/toastStore'
 import type { Settings } from '@/schemas/apiSchema'
 import type { ComfyApp } from '@/scripts/app'
-import { useToastStore } from '@/stores/toastStore'
 
 import { ComfyDialog } from './dialog'