fix: resolve strict mode violations and stale text in E2E tests

- public.spec.ts: add exact:true for 'Start Free' (matched 3 links)
- navigation/history: add exact:true for 'Sessions' heading (matched
  'AI Sessions' and 'Flow Sessions' subheadings too)
- command-palette: 'Ask FlowPilot AI' → 'Troubleshoot with FlowPilot'
- CLAUDE.md: add warning not to use gh run watch (burns tokens)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/e2e/command-palette.spec.ts

@@ -45,7 +45,7 @@ test.describe('command palette smoke tests', () => {
 
       // Should show AI Assistant section with FlowPilot option
       await expect(page.getByText('AI Assistant')).toBeVisible({ timeout: 5000 })
-      await expect(page.getByText('Ask FlowPilot AI')).toBeVisible()
+      await expect(page.getByText('Troubleshoot with FlowPilot')).toBeVisible()
     } finally {
       await disposeApiContext(api)
     }
@@ -83,7 +83,7 @@ test.describe('command palette smoke tests', () => {
 
     // AI Assistant section should appear with FlowPilot option
     await expect(page.getByText('AI Assistant')).toBeVisible({ timeout: 3000 })
-    const flowpilotOption = page.getByText('Ask FlowPilot AI')
+    const flowpilotOption = page.getByText('Troubleshoot with FlowPilot')
     await expect(flowpilotOption).toBeVisible()
 
     await flowpilotOption.click()