Phase 3.3: topic sensitivity + Phase 3.4: auth foundation

Phase 3.3 — Session Topic Sensitivity (complete):
- Backend: topic_sensitivity column + session_sensitivity_log, sensitivity service
  (flip with one-way-latch + audit), PATCH /api/shared/chat/sessions/:id/topic,
  topic carried in pairing + extension WS payloads, CC filter + sensitive stats
  + per-mitra sensitive columns on activity page
- client_app: TopicSelectionBottomSheet before pricing, topic flows through
  pairing request, silent WS handler for session_topic_updated
- mitra_app: SensitivityBadge + SensitivityTheme + sensitivityConfigProvider,
  overlay badge + yellow accent, chat screen app-bar toggle with configurable
  confirmation + latch, extension card shows current flag, history + transcript
  yellow theme
- control_center: Sensitivitas Topik settings section, topic filter + column
  with inline audit log, sensitive stats dashboard card, mitra activity
  sensitive columns with QC flag

Phase 3.4 — Self-Managed Auth (foundation only):
- Migration: auth_sessions + otp_requests tables, social identity columns on
  customers, password_hash + lockout on control_center_users, OTP + CC lockout
  app_config keys
- New services: password (bcrypt + complexity), token (JWT HS256 + refresh
  rotation, session_id claim pre-wires future Valkey revocation),
  social-identity (Google + Apple JWKS), OTP (Fazpass stub — real API TBD)
- Constants: AuthProvider + OtpChannel
- Middleware, auth route rewrites, WS auth update, Firebase → FCM isolation
  still pending (next chunk); Fazpass docs + Apple Developer setup still
  required before E2E testing

Docs:
- requirement/phase3.3.md, phase3.3-plan.md, phase3.3-testing.md
- requirement/phase3.4.md, phase3.4-plan.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

mitra_app/lib/features/chat/screens/chat_transcript_screen.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../../core/api/api_client_provider.dart';
+import '../../../core/chat/widgets/sensitivity_badge.dart';
+import '../../../core/chat/widgets/sensitivity_theme.dart';
 import '../../../core/constants.dart';
 
 class MitraChatTranscriptScreen extends ConsumerStatefulWidget {
@@ -15,6 +17,7 @@ class MitraChatTranscriptScreen extends ConsumerStatefulWidget {
 class _MitraChatTranscriptScreenState extends ConsumerState<MitraChatTranscriptScreen> {
   List<Map<String, dynamic>> _messages = [];
   List<Map<String, dynamic>> _closures = [];
+  TopicSensitivity _topicSensitivity = TopicSensitivity.regular;
   bool _loading = true;
 
   @override
@@ -26,11 +29,16 @@ class _MitraChatTranscriptScreenState extends ConsumerState<MitraChatTranscriptS
   Future<void> _loadTranscript() async {
     try {
       final api = ref.read(apiClientProvider);
-      final response = await api.get('/api/shared/chat/${widget.sessionId}/transcript');
-      final data = response['data'] as Map<String, dynamic>;
+      final results = await Future.wait([
+        api.get('/api/shared/chat/${widget.sessionId}/transcript'),
+        api.get('/api/shared/chat/${widget.sessionId}/info'),
+      ]);
+      final data = results[0]['data'] as Map<String, dynamic>;
+      final info = results[1]['data'] as Map<String, dynamic>?;
       setState(() {
         _messages = (data['messages'] as List<dynamic>).cast<Map<String, dynamic>>();
         _closures = (data['closures'] as List<dynamic>).cast<Map<String, dynamic>>();
+        _topicSensitivity = TopicSensitivity.fromString(info?['topic_sensitivity'] as String?);
         _loading = false;
       });
     } catch (_) {
@@ -40,8 +48,21 @@ class _MitraChatTranscriptScreenState extends ConsumerState<MitraChatTranscriptS
 
   @override
   Widget build(BuildContext context) {
+    final isSensitive = _topicSensitivity == TopicSensitivity.sensitive;
     return Scaffold(
-      appBar: AppBar(title: const Text('Transkrip Chat')),
+      backgroundColor: isSensitive ? SensitivityTheme.sensitive.bgTint : null,
+      appBar: AppBar(
+        title: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            const Text('Transkrip Chat'),
+            if (isSensitive) ...[
+              const SizedBox(width: 8),
+              SensitivityBadge(sensitivity: _topicSensitivity, fontSize: 11),
+            ],
+          ],
+        ),
+      ),
       body: _loading
           ? const Center(child: CircularProgressIndicator())
           : ListView(