Add voice command review/edit system with user feedback tracking

Implemented complete review/edit workflow for voice commands with ML feedback collection:

**Backend:**
- Created V012 migration for voice_feedback table with user action tracking
- Added VoiceFeedback entity with approval/edit/reject actions
- Implemented voice feedback API endpoint (POST /api/v1/voice/feedback)
- Fixed user ID extraction bug (req.user.userId vs req.user.sub)

**Frontend:**
- Built VoiceActivityReview component with field-specific editors
- Integrated review dialog into voice command workflow
- Added approve/edit/reject handlers with feedback submission
- Fixed infinite loop by tracking processed classification IDs

**Features:**
- Users can review AI-extracted data before saving
- Quick-edit capabilities for all activity fields
- Feedback data stored for ML model improvement
- Activity creation only happens after user approval/edit

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

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

maternal-web/lib/api/voice.ts

@@ -0,0 +1,22 @@
+import apiClient from './client';
+
+export interface VoiceFeedbackData {
+  childId?: string;
+  activityId?: string;
+  transcript: string;
+  language?: string;
+  extractedType: string;
+  extractedData: Record<string, any>;
+  confidence?: number;
+  action: 'approved' | 'edited' | 'rejected';
+  finalType?: string;
+  finalData?: Record<string, any>;
+  userNotes?: string;
+}
+
+export const voiceApi = {
+  async saveFeedback(feedbackData: VoiceFeedbackData) {
+    const response = await apiClient.post('/api/v1/voice/feedback', feedbackData);
+    return response.data;
+  },
+};