test: add e2e tests for properties panel

- Add ComfyPropertiesPanel fixture class with locators and helpers
- Add tests for basic functionality, search, title editing, global settings, and tab navigation
- Tag all tests with @ui for filtering

Amp-Thread-ID: https://ampcode.com/threads/T-019c16eb-8621-7473-9062-a57b0a1e782a
Co-authored-by: Amp <amp@ampcode.com>

browser_tests/tests/propertiesPanel/propertiesPanelSearch.spec.ts

@@ -0,0 +1,73 @@
+import { expect } from '@playwright/test'
+
+import { comfyPageFixture as test } from '../../fixtures/ComfyPage'
+
+test.describe('Properties panel search functionality', { tag: ['@ui'] }, () => {
+  test.beforeEach(async ({ comfyPage }) => {
+    await comfyPage.actionbar.propertiesButton.click()
+    await expect(comfyPage.propertiesPanel.root).toBeVisible()
+  })
+
+  test.describe('Search with multiple nodes selected', () => {
+    test.beforeEach(async ({ comfyPage }) => {
+      await comfyPage.selectNodes(['KSampler', 'CLIP Text Encode (Prompt)'])
+    })
+
+    test('filters widgets by search query', async ({ comfyPage }) => {
+      const { propertiesPanel } = comfyPage
+
+      await propertiesPanel.searchBox.fill('seed')
+
+      await expect(propertiesPanel.root.getByText('KSampler')).toBeVisible()
+      await expect(
+        propertiesPanel.root.getByText('CLIP Text Encode (Prompt)')
+      ).not.toBeVisible()
+    })
+
+    test('shows all nodes when search is cleared', async ({ comfyPage }) => {
+      const { propertiesPanel } = comfyPage
+
+      await propertiesPanel.searchBox.fill('seed')
+      await propertiesPanel.searchBox.fill('')
+
+      await expect(propertiesPanel.root.getByText('KSampler')).toBeVisible()
+      await expect(
+        propertiesPanel.root.getByText('CLIP Text Encode (Prompt)')
+      ).toBeVisible()
+    })
+
+    test('shows no results message when search matches nothing', async ({
+      comfyPage
+    }) => {
+      const { propertiesPanel } = comfyPage
+
+      await propertiesPanel.searchBox.fill('nonexistent_widget_xyz')
+
+      await expect(propertiesPanel.noResultsMessage).toBeVisible()
+    })
+  })
+
+  test.describe('Search with single node selected', () => {
+    test('filters widgets within single node', async ({ comfyPage }) => {
+      const { propertiesPanel } = comfyPage
+
+      await comfyPage.selectNodes(['KSampler'])
+      await propertiesPanel.searchBox.fill('cfg')
+
+      await expect(propertiesPanel.root.getByText('cfg')).toBeVisible()
+      await expect(
+        propertiesPanel.root.getByText('seed', { exact: true })
+      ).not.toBeVisible()
+    })
+  })
+
+  test.describe('Search in workflow overview mode', () => {
+    test('Nodes tab has search functionality', async ({ comfyPage }) => {
+      const { propertiesPanel } = comfyPage
+
+      await propertiesPanel.clickTab('Nodes')
+
+      await expect(propertiesPanel.searchBox).toBeVisible()
+    })
+  })
+})