feat: 添加 UI 组件增强与测试覆盖

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/FeedbackSurvey/useFrustrationDetection.ts

@@ -1,9 +1,59 @@
-// Auto-generated stub — replace with real implementation
-export function useFrustrationDetection(
-  _messages: unknown[],
-  _isLoading: boolean,
-  _hasActivePrompt: boolean,
-  _otherSurveyOpen: boolean,
-): { state: 'closed' | 'open'; handleTranscriptSelect: () => void } {
-  return { state: 'closed', handleTranscriptSelect: () => {} };
+import { useState } from 'react'
+import type { Message } from '../../types/message.js'
+import { getGlobalConfig, saveGlobalConfig } from '../../utils/config.js'
+import { isPolicyAllowed } from '../../services/policyLimits/index.js'
+import { submitTranscriptShare } from './submitTranscriptShare.js'
+
+type FrustrationState = 'closed' | 'transcript_prompt' | 'submitted'
+
+export type FrustrationDetectionResult = {
+  state: FrustrationState
+  handleTranscriptSelect: (choice: string) => void
+}
+
+function detectFrustration(messages: Message[]): boolean {
+  const apiErrors = messages.filter(m => (m as any).isApiErrorMessage)
+  return apiErrors.length >= 2
+}
+
+export function useFrustrationDetection(
+  messages: Message[],
+  isLoading: boolean,
+  hasActivePrompt: boolean,
+  otherSurveyOpen: boolean,
+): FrustrationDetectionResult {
+  const [state, setState] = useState<FrustrationState>('closed')
+
+  const config = getGlobalConfig() as { transcriptShareDismissed?: boolean }
+  if (config.transcriptShareDismissed) {
+    return { state: 'closed', handleTranscriptSelect: () => {} }
+  }
+
+  if (!isPolicyAllowed('product_feedback' as any)) {
+    return { state: 'closed', handleTranscriptSelect: () => {} }
+  }
+
+  if (isLoading || hasActivePrompt || otherSurveyOpen) {
+    return { state: 'closed', handleTranscriptSelect: () => {} }
+  }
+
+  const frustrated = detectFrustration(messages)
+
+  const effectiveState =
+    frustrated && state === 'closed' ? 'transcript_prompt' : state
+
+  function handleTranscriptSelect(choice: string) {
+    if (choice === 'yes') {
+      void submitTranscriptShare(messages, 'frustration', crypto.randomUUID())
+      setState('submitted')
+    } else {
+      saveGlobalConfig((current: any) => ({
+        ...current,
+        transcriptShareDismissed: true,
+      }))
+      setState('closed')
+    }
+  }
+
+  return { state: effectiveState, handleTranscriptSelect }
 }