Implement A3 Flutter polish: conversations, contacts, L1, inbox

Wire conversation list and contacts to A1 APIs, add tone-sample
onboarding skeleton, polish L1 approve UX with editable draft panel,
and add post-hoc escalation inbox. Update roadmap A3 checklist.

Co-authored-by: okuma <o0kuma@users.noreply.github.com>

docs/roadmap.md

@@ -64,20 +64,20 @@
   `POST /messages/:id/retract` 추가: 트윈이 자동발송한(L2) 메시지만 대상, 사람이 쓴 메시지는 400,
   이미 되돌린 건 409, 성공하면 같은 대화방 WebSocket에 `{"type":"retraction", "id":...}` 브로드캐스트.
   일반 메시지 브로드캐스트도 `"type":"message"`를 붙여 클라이언트가 두 이벤트를 구분하게 함.
-  **되돌리기 UI는 `mobile/`에 있음** — 사후알림 전용 함/푸시는 아직.
-  에스컬레이션 로그를 "조회"하는 API는 아직 없음(필요해지면 추가)
+  **되돌리기 UI는 `mobile/`에 있음**. 사후알림 함은 A3에서 `InboxScreen` +
+  `GET /users/:id/escalation-logs`로 연결. FCM 푸시는 B.
 
 **2.3 클라이언트 (Flutter, 안드로이드 우선 빌드)** — `mobile/`
-- [x] 기본 채팅 UI (대화 목록, 대화방) — `mobile/` 골격. 대화방 목록 API는 아직 없어 ID 직접
-  입장. WebSocket 수신·인간 메시지 전송 연결됨
-- [~] 온보딩 플로우(5분 온보딩) 뼈대 — 초대 코드 가입 화면만 있음. 말투 학습 UX 디테일은
-  **사람 PoC #1 결과를 맨 마지막에 반영** (지금은 뼈대만)
+- [x] 기본 채팅 UI (대화 목록, 대화방) — `GET`/`POST /conversations`, 히스토리 로드,
+  WebSocket 수신·인간 메시지 전송. 연락처 화면에서 DM 시작
+- [~] 온보딩 플로우(5분 온보딩) 뼈대 — 가입 + 말투 샘플 입력 UI(`OnboardingToneScreen`,
+  기기 로컬). 말투 학습 UX 디테일·카피는 **사람 PoC #1 결과를 맨 마지막에 반영**
 - [x] 분신 뱃지·거부권 UX — 점선+뱃지 말풍선, 대화방 거부권 버튼. 실시간 본인확인 응답 문구는
   서버/AI 프롬프트 측과 이어서 다듬을 것
-- [x] 자율성 설정 화면(L0~L2, 화이트리스트) — `AutonomySettingsScreen`. 상대별 예외 매칭은
-  서버가 전역 키워드만 지원하는 동안 UI도 주제 키워드 CRUD만
-- [x] 에스컬레이션 배너·되돌리기 UI — 초안 escalate 배너 + twin 메시지 되돌리기 버튼.
-  사후알림 전용 함/푸시는 아직 없음
+- [x] 자율성 설정 화면(L0~L2, 화이트리스트) — `AutonomySettingsScreen`. 상대별 예외는
+  서버 contact-scoped 매칭과 함께 화이트리스트 CRUD
+- [x] 에스컬레이션·L1 승인·되돌리기 UI — L1 수정/버리기/재초안/승인 패널 + twin 되돌리기 +
+  사후알림 함. FCM 푸시는 B
 
 **2.4 안전장치 통합** (전 구간 필수, 타협 불가)
 - [x] 에스컬레이션 하드게이트가 클라이언트·서버 전 구간에서 우회 불가하게 설계 — 실제 발견한 우회
@@ -147,10 +147,10 @@ PoC 데이터 없이 기본값을 추측해 채우지 않는다.
 2. [x] 2.1 코어 백엔드 Go 구현 — `core-backend/` (가입·메시지·WebSocket + A1 대화/연락처/히스토리 + A2 세션/관리자 토큰). 푸시 알림만 남음
 3. [x] 2.2 AI 서비스 — `ai-service/`(Python) 완료. Go 코어→AI 서비스 연동·자율성 오케스트레이션·
    되돌리기 API 완료. 온디바이스 말투 이력 저장은 클라이언트와 이어서
-4. [~] 2.3 Flutter 클라이언트 — `mobile/` 골격 착수 완료(가입·채팅·뱃지·거부권·되돌리기·자율성
-   설정). 남은 것: 대화방/연락처 목록 API 연동, 온보딩 말투 UX, drift+SQLCipher, 수동 QA
+4. [~] 2.3 Flutter 클라이언트 — A3까지: 가입·말투 온보딩 뼈대·대화/연락처 API 연동·히스토리·
+   L1 승인 UX·사후 알림 함·뱃지·거부권·되돌리기·자율성. 남은 것: 수동 E2E QA, drift+SQLCipher(B)
 5. [x] 2.4/2.5 안전장치·QA (서버 쪽) — 하드게이트·거부권·삭제·pytest·L0~L2 통합 테스트 완료.
-   클라이언트 쪽 온디바이스 암호화·데이터 흐름 대시보드·수동 QA는 2.3 나머지와 함께
+   클라이언트 쪽 온디바이스 암호화·데이터 흐름 대시보드·수동 QA는 B/A3 나머지와 함께
    - 5-1. [x] 2.6 베타 배포 준비(서버 쪽) — 초대 코드·`/admin/metrics`. **실제 베타 오픈은
      §3(사람 PoC) 이후**
    - 5-2. [x] 화이트리스트 규칙 CRUD API
@@ -176,10 +176,10 @@ Master 합의 착수 순서: **A → B → C → D(맨 마지막)**. E는 Phase
 - [x] 프로덕션 DB 마이그레이션 명령 (`go run . migrate`)
 
 **A3. Flutter — 메신저답게 다듬기** (A1/A2 이후)
-- [ ] 대화 목록/연락처 UI를 서버 API에 연결
-- [ ] 온보딩 뼈대 확장 (말투 샘플 입력 UI)
-- [ ] L1 승인 플로우 UX 정리
-- [ ] 사후 알림 함
+- [x] 대화 목록/연락처 UI를 서버 API에 연결
+- [x] 온보딩 뼈대 확장 (말투 샘플 입력 UI)
+- [x] L1 승인 플로우 UX 정리
+- [x] 사후 알림 함
 - [ ] 에뮬레이터/실기기 E2E 수동 QA
 
 ##### B. 그다음 — 베타 품질

mobile/README.md

@@ -1,16 +1,19 @@
 # 분신 mobile (Flutter)
 
-Phase 1 클라이언트 골격 (`docs/roadmap.md` §2.3). **v1은 Android 빌드만** 대상으로 한다
+Phase 1 클라이언트 (`docs/roadmap.md` §2.3 / A3). **v1은 Android 빌드만** 대상으로 한다
 (`docs/tech-design.md` §8).
 
 ## 지금 있는 것
 
-- 초대 코드 가입 (`POST /auth/signup`)
-- 대화방 입장(임시: 대화방 ID 직접 입력 — 목록 API는 아직 core-backend에 없음)
-- 채팅 전송 + WebSocket 수신
-- 분신 초안 요청 / L1 승인 발송
-- 분신 뱃지(점선 + 라벨) · 거부권 · 되돌리기
-- 자율성 L0~L2 설정 + 화이트리스트 CRUD UI
+- 초대 코드 가입 (`POST /auth/signup`) + Bearer 세션
+- 말투 샘플 온보딩(기기 로컬 저장; 최종 카피는 PoC 이후)
+- 대화방 목록/생성 (`GET`/`POST /conversations`) — 수동 ID 입력 제거
+- 연락처 CRUD + 대화 시작 (`/users/:id/contacts`)
+- 채팅 히스토리 로드 + WebSocket 수신
+- 분신 초안 / L1 승인(수정·버리기·재초안·승인 발송)
+- 분신 뱃지 · 거부권 · 되돌리기
+- 사후 알림 함 (`GET /users/:id/escalation-logs`)
+- 자율성 L0~L2 + 화이트리스트 CRUD UI
 
 ## 실행
 
@@ -26,10 +29,18 @@ flutter run --dart-define=CORE_API_BASE=http://10.0.2.2:8080
 flutter run --dart-define=CORE_API_BASE=http://<your-lan-ip>:8080
 ```
 
-## 아직 없는 것
+## E2E 수동 QA 체크 (에뮬레이터/실기기)
 
-- 대화방/연락처 목록 API 연동 (서버에 엔드포인트 추가 필요)
-- 온보딩 말투 학습 UX 디테일 (PoC #1 결과는 맨 마지막에 반영)
-- drift + SQLCipher 온디바이스 저장
-- 푸시 알림
+1. 초대 코드로 가입 → 말투 샘플 저장(또는 나중에)
+2. 연락처에 상대 사용자 ID 등록 → 대화 시작
+3. 메시지 전송 · 새로고침 후 히스토리 유지
+4. 초안 요청 → L1 패널에서 수정/버리기/승인 발송 → 분신 뱃지 확인
+5. 민감 문장으로 에스컬레이션 → 사후 알림 함 진입
+6. 분신 메시지 되돌리기 · 거부권
+7. 자율성 L0~L2 + 화이트리스트 추가/삭제
+
+## 아직 없는 것 (B 이후)
+
+- FCM 푸시 · drift + SQLCipher · 멀티 디바이스
+- 온보딩 말투 UX 디테일 (PoC #1 결과는 맨 마지막에 반영)
 - iOS 빌드 (v1 범위 밖)

mobile/lib/main.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import 'screens/conversation_list_screen.dart';
+import 'screens/onboarding_tone_screen.dart';
 import 'screens/signup_screen.dart';
 import 'state/session_state.dart';
 
@@ -33,6 +34,7 @@ class BunsinApp extends StatelessWidget {
         home: Consumer<SessionState>(
           builder: (context, s, _) {
             if (s.user == null) return const SignupScreen();
+            if (!s.toneOnboardingDone) return const OnboardingToneScreen();
             return const ConversationListScreen();
           },
         ),

mobile/lib/models/models.dart

@@ -34,6 +34,89 @@ class TwinSettings {
   }
 }
 
+class ConversationSummary {
+  ConversationSummary({
+    required this.id,
+    required this.isGroup,
+    required this.userIds,
+    required this.twinDisabledByPeer,
+    this.createdAt,
+  });
+
+  final int id;
+  final bool isGroup;
+  final List<int> userIds;
+  final bool twinDisabledByPeer;
+  final DateTime? createdAt;
+
+  factory ConversationSummary.fromJson(Map<String, dynamic> json) {
+    final rawIds = json['user_ids'] as List<dynamic>? ?? const [];
+    return ConversationSummary(
+      id: json['id'] as int,
+      isGroup: json['is_group'] as bool? ?? false,
+      userIds: rawIds.map((e) => e as int).toList(),
+      twinDisabledByPeer: json['twin_disabled_by_peer'] as bool? ?? false,
+      createdAt: DateTime.tryParse(json['created_at'] as String? ?? ''),
+    );
+  }
+
+  /// Title helper when peer display names are not yet loaded.
+  String titleFor(int myUserId) {
+    final peers = userIds.where((id) => id != myUserId).toList();
+    if (isGroup) return '그룹 #$id';
+    if (peers.isEmpty) return '나와의 대화 #$id';
+    return '대화 · 상대 #${peers.first}';
+  }
+}
+
+class Contact {
+  Contact({
+    required this.id,
+    required this.displayName,
+    this.contactUserId,
+    this.relationshipNote = '',
+  });
+
+  final int id;
+  final String displayName;
+  final int? contactUserId;
+  final String relationshipNote;
+
+  factory Contact.fromJson(Map<String, dynamic> json) => Contact(
+        id: json['id'] as int,
+        displayName: json['display_name'] as String? ?? '',
+        contactUserId: json['contact_user_id'] as int?,
+        relationshipNote: json['relationship_note'] as String? ?? '',
+      );
+}
+
+class EscalationLogEntry {
+  EscalationLogEntry({
+    required this.id,
+    required this.conversationId,
+    required this.reason,
+    required this.messageSnippet,
+    required this.resolved,
+    required this.createdAt,
+  });
+
+  final int id;
+  final int conversationId;
+  final String reason;
+  final String messageSnippet;
+  final bool resolved;
+  final DateTime createdAt;
+
+  factory EscalationLogEntry.fromJson(Map<String, dynamic> json) => EscalationLogEntry(
+        id: json['id'] as int,
+        conversationId: json['conversation_id'] as int? ?? 0,
+        reason: json['reason'] as String? ?? '',
+        messageSnippet: json['message_snippet'] as String? ?? '',
+        resolved: json['resolved'] as bool? ?? false,
+        createdAt: DateTime.tryParse(json['created_at'] as String? ?? '') ?? DateTime.now(),
+      );
+}
+
 class ChatMessage {
   ChatMessage({
     required this.id,

mobile/lib/screens/chat_screen.dart

@@ -10,9 +10,10 @@ import '../state/session_state.dart';
 import '../widgets/message_bubble.dart';
 
 class ChatScreen extends StatefulWidget {
-  const ChatScreen({super.key, required this.conversationId});
+  const ChatScreen({super.key, required this.conversationId, this.title});
 
   final int conversationId;
+  final String? title;
 
   @override
   State<ChatScreen> createState() => _ChatScreenState();
@@ -20,18 +21,54 @@ class ChatScreen extends StatefulWidget {
 
 class _ChatScreenState extends State<ChatScreen> {
   final _input = TextEditingController();
+  final _draftEdit = TextEditingController();
+  final _scroll = ScrollController();
   final _messages = <ChatMessage>[];
   ConversationSocket? _socket;
   StreamSubscription? _sub;
   String? _banner;
   DraftResult? _pendingDraft;
   bool _busy = false;
+  bool _loadingHistory = true;
 
   @override
   void initState() {
     super.initState();
     _socket = ConversationSocket(widget.conversationId)..connect();
     _sub = _socket!.events.listen(_onEvent);
+    _loadHistory();
+  }
+
+  Future<void> _loadHistory() async {
+    final session = context.read<SessionState>();
+    try {
+      final history = await session.api.listMessages(widget.conversationId);
+      if (!mounted) return;
+      setState(() {
+        _messages
+          ..clear()
+          ..addAll(history);
+        _loadingHistory = false;
+      });
+      _scrollToEnd();
+    } on ApiException catch (e) {
+      if (!mounted) return;
+      setState(() {
+        _loadingHistory = false;
+        _banner = '히스토리 로드 실패 (${e.statusCode})';
+      });
+    }
+  }
+
+  void _scrollToEnd() {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!_scroll.hasClients) return;
+      _scroll.animateTo(
+        _scroll.position.maxScrollExtent,
+        duration: const Duration(milliseconds: 200),
+        curve: Curves.easeOut,
+      );
+    });
   }
 
   void _onEvent(Map<String, dynamic> event) {
@@ -58,6 +95,7 @@ class _ChatScreenState extends State<ChatScreen> {
     if (msg == null) return;
     if (_messages.any((m) => m.id == msg.id)) return;
     setState(() => _messages.add(msg));
+    _scrollToEnd();
   }
 
   @override
@@ -65,6 +103,8 @@ class _ChatScreenState extends State<ChatScreen> {
     _sub?.cancel();
     _socket?.dispose();
     _input.dispose();
+    _draftEdit.dispose();
+    _scroll.dispose();
     super.dispose();
   }
 
@@ -83,6 +123,7 @@ class _ChatScreenState extends State<ChatScreen> {
       if (!_messages.any((m) => m.id == msg.id)) {
         setState(() => _messages.add(msg));
       }
+      _scrollToEnd();
     } on ApiException catch (e) {
       setState(() => _banner = '전송 실패 (${e.statusCode})');
     } finally {
@@ -105,15 +146,19 @@ class _ChatScreenState extends State<ChatScreen> {
       if (_input.text.trim().isNotEmpty) {
         contextLines.add('상대: ${_input.text.trim()}');
       }
+      final style = session.styleExamples.isNotEmpty
+          ? session.styleExamples
+          : const ['ㅇㅇ 알겠음', 'ㅋㅋ 그래', '나중에 연락할게'];
       final draft = await session.api.requestDraft(
         conversationId: widget.conversationId,
         contextLines: contextLines.isEmpty ? ['상대: 안녕'] : contextLines,
-        styleExamples: const ['ㅇㅇ 알겠음', 'ㅋㅋ 그래', '나중에 연락할게'],
+        styleExamples: style,
       );
       setState(() {
         _pendingDraft = draft;
+        _draftEdit.text = draft.isEscalate ? '' : draft.text;
         if (draft.isEscalate) {
-          _banner = '에스컬레이션: ${draft.text}';
+          _banner = null;
         }
       });
     } on ApiException catch (e) {
@@ -127,19 +172,23 @@ class _ChatScreenState extends State<ChatScreen> {
     final session = context.read<SessionState>();
     final draft = _pendingDraft;
     if (draft == null || draft.isEscalate || session.user == null) return;
+    final text = _draftEdit.text.trim();
+    if (text.isEmpty) return;
     setState(() => _busy = true);
     try {
       final msg = await session.api.sendMessage(
         conversationId: widget.conversationId,
         senderId: session.user!.id,
-        text: draft.text,
+        text: text,
         senderMode: SenderMode.twin,
         approved: true,
       );
       setState(() {
         _pendingDraft = null;
+        _draftEdit.clear();
         if (!_messages.any((m) => m.id == msg.id)) _messages.add(msg);
       });
+      _scrollToEnd();
     } on ApiException catch (e) {
       setState(() => _banner = '분신 발송 차단 (${e.statusCode}): ${e.body}');
     } finally {
@@ -147,6 +196,14 @@ class _ChatScreenState extends State<ChatScreen> {
     }
   }
 
+  void _rejectDraft() {
+    setState(() {
+      _pendingDraft = null;
+      _draftEdit.clear();
+      _banner = '초안을 버렸습니다. 직접 쓰거나 다시 초안을 요청하세요.';
+    });
+  }
+
   Future<void> _veto() async {
     final session = context.read<SessionState>();
     try {
@@ -166,6 +223,84 @@ class _ChatScreenState extends State<ChatScreen> {
     }
   }
 
+  Widget _buildL1Panel(BuildContext context) {
+    final theme = Theme.of(context);
+    final draft = _pendingDraft;
+    if (draft == null) return const SizedBox.shrink();
+
+    if (draft.isEscalate) {
+      return Material(
+        color: theme.colorScheme.errorContainer,
+        child: Padding(
+          padding: const EdgeInsets.fromLTRB(16, 12, 16, 12),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Text('직접 확인 필요', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w700)),
+              const SizedBox(height: 4),
+              Text(draft.text.isEmpty ? '민감·확정성 내용으로 분신 발송이 보류되었습니다.' : draft.text),
+              const SizedBox(height: 8),
+              Align(
+                alignment: Alignment.centerRight,
+                child: TextButton(onPressed: _rejectDraft, child: const Text('닫기')),
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    return Material(
+      elevation: 2,
+      color: theme.colorScheme.secondaryContainer,
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(16, 12, 16, 12),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Row(
+              children: [
+                Icon(Icons.auto_awesome, size: 18, color: theme.colorScheme.onSecondaryContainer),
+                const SizedBox(width: 6),
+                Text(
+                  'L1 승인 — 수정 후 보내기',
+                  style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w700),
+                ),
+              ],
+            ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _draftEdit,
+              minLines: 2,
+              maxLines: 5,
+              decoration: const InputDecoration(
+                border: OutlineInputBorder(),
+                filled: true,
+                fillColor: Colors.white70,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Row(
+              children: [
+                TextButton(onPressed: _busy ? null : _rejectDraft, child: const Text('버리기')),
+                const Spacer(),
+                FilledButton.tonal(
+                  onPressed: _busy ? null : _requestDraft,
+                  child: const Text('다시 초안'),
+                ),
+                const SizedBox(width: 8),
+                FilledButton(
+                  onPressed: _busy ? null : _sendTwinApproved,
+                  child: const Text('승인하고 보내기'),
+                ),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final session = context.watch<SessionState>();
@@ -173,7 +308,7 @@ class _ChatScreenState extends State<ChatScreen> {
 
     return Scaffold(
       appBar: AppBar(
-        title: Text('대화방 #${widget.conversationId}'),
+        title: Text(widget.title ?? '대화방 #${widget.conversationId}'),
         actions: [
           TextButton(onPressed: _busy ? null : _veto, child: const Text('거부권')),
         ],
@@ -188,31 +323,23 @@ class _ChatScreenState extends State<ChatScreen> {
               ],
             ),
           Expanded(
-            child: ListView.builder(
-              padding: const EdgeInsets.symmetric(vertical: 8),
-              itemCount: _messages.length,
-              itemBuilder: (context, i) {
-                final m = _messages[i];
-                return MessageBubble(
-                  message: m,
-                  isMine: me != null && m.senderId == me,
-                  onRetract: m.isTwin ? () => _retract(m) : null,
-                );
-              },
-            ),
+            child: _loadingHistory
+                ? const Center(child: CircularProgressIndicator())
+                : ListView.builder(
+                    controller: _scroll,
+                    padding: const EdgeInsets.symmetric(vertical: 8),
+                    itemCount: _messages.length,
+                    itemBuilder: (context, i) {
+                      final m = _messages[i];
+                      return MessageBubble(
+                        message: m,
+                        isMine: me != null && m.senderId == me,
+                        onRetract: m.isTwin ? () => _retract(m) : null,
+                      );
+                    },
+                  ),
           ),
-          if (_pendingDraft != null && !_pendingDraft!.isEscalate)
-            Material(
-              color: Theme.of(context).colorScheme.secondaryContainer,
-              child: ListTile(
-                title: const Text('분신 초안 (L1 승인)'),
-                subtitle: Text(_pendingDraft!.text),
-                trailing: FilledButton(
-                  onPressed: _busy ? null : _sendTwinApproved,
-                  child: const Text('보내기'),
-                ),
-              ),
-            ),
+          _buildL1Panel(context),
           SafeArea(
             child: Padding(
               padding: const EdgeInsets.fromLTRB(12, 8, 12, 12),

mobile/lib/screens/contacts_screen.dart

@@ -0,0 +1,174 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../models/models.dart';
+import '../services/api_client.dart';
+import '../state/session_state.dart';
+import 'chat_screen.dart';
+
+class ContactsScreen extends StatefulWidget {
+  const ContactsScreen({super.key});
+
+  @override
+  State<ContactsScreen> createState() => _ContactsScreenState();
+}
+
+class _ContactsScreenState extends State<ContactsScreen> {
+  List<Contact> _contacts = [];
+  bool _loading = true;
+  String? _error;
+
+  @override
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    final session = context.read<SessionState>();
+    if (session.user == null) return;
+    setState(() {
+      _loading = true;
+      _error = null;
+    });
+    try {
+      final list = await session.api.listContacts(session.user!.id);
+      setState(() => _contacts = list);
+    } on ApiException catch (e) {
+      setState(() => _error = '연락처 로드 실패 (${e.statusCode})');
+    } finally {
+      setState(() => _loading = false);
+    }
+  }
+
+  Future<void> _showAddDialog() async {
+    final nameCtrl = TextEditingController();
+    final peerCtrl = TextEditingController();
+    final noteCtrl = TextEditingController();
+    final ok = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('연락처 추가'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            TextField(
+              controller: nameCtrl,
+              decoration: const InputDecoration(labelText: '표시 이름', border: OutlineInputBorder()),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: peerCtrl,
+              keyboardType: TextInputType.number,
+              decoration: const InputDecoration(
+                labelText: '상대 사용자 ID (선택)',
+                helperText: '대화 시작에 필요',
+                border: OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: noteCtrl,
+              decoration: const InputDecoration(labelText: '관계 메모 (선택)', border: OutlineInputBorder()),
+            ),
+          ],
+        ),
+        actions: [
+          TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('취소')),
+          FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('추가')),
+        ],
+      ),
+    );
+    if (ok != true || !mounted) return;
+    final session = context.read<SessionState>();
+    final name = nameCtrl.text.trim();
+    if (name.isEmpty || session.user == null) return;
+    try {
+      final peer = int.tryParse(peerCtrl.text.trim());
+      final created = await session.api.createContact(
+        userId: session.user!.id,
+        displayName: name,
+        contactUserId: peer,
+        relationshipNote: noteCtrl.text.trim(),
+      );
+      setState(() => _contacts = [..._contacts, created]);
+    } on ApiException catch (e) {
+      setState(() => _error = '추가 실패 (${e.statusCode})');
+    }
+  }
+
+  Future<void> _startChat(Contact contact) async {
+    final session = context.read<SessionState>();
+    final me = session.user;
+    if (me == null || contact.contactUserId == null) {
+      setState(() => _error = '상대 사용자 ID가 있는 연락처만 대화를 시작할 수 있습니다.');
+      return;
+    }
+    try {
+      final conv = await session.api.createConversation(
+        userIds: [me.id, contact.contactUserId!],
+        contactId: contact.id,
+      );
+      if (!mounted) return;
+      await Navigator.of(context).push(
+        MaterialPageRoute(builder: (_) => ChatScreen(conversationId: conv.id, title: contact.displayName)),
+      );
+    } on ApiException catch (e) {
+      setState(() => _error = '대화 생성 실패 (${e.statusCode}): ${e.body}');
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('연락처')),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _showAddDialog,
+        child: const Icon(Icons.person_add_alt_1),
+      ),
+      body: RefreshIndicator(
+        onRefresh: _load,
+        child: _loading
+            ? ListView(children: const [SizedBox(height: 120), Center(child: CircularProgressIndicator())])
+            : ListView(
+                children: [
+                  if (_error != null)
+                    Padding(
+                      padding: const EdgeInsets.all(16),
+                      child: Text(_error!, style: TextStyle(color: Theme.of(context).colorScheme.error)),
+                    ),
+                  if (_contacts.isEmpty)
+                    const Padding(
+                      padding: EdgeInsets.all(24),
+                      child: Text('연락처가 없습니다. + 버튼으로 추가하세요.'),
+                    ),
+                  for (final c in _contacts)
+                    ListTile(
+                      leading: const CircleAvatar(child: Icon(Icons.person_outline)),
+                      title: Text(c.displayName),
+                      subtitle: Text(
+                        [
+                          if (c.contactUserId != null) '사용자 #${c.contactUserId}',
+                          if (c.relationshipNote.isNotEmpty) c.relationshipNote,
+                        ].join(' · '),
+                      ),
+                      trailing: c.contactUserId == null
+                          ? null
+                          : TextButton(onPressed: () => _startChat(c), child: const Text('대화')),
+                      onLongPress: () async {
+                        final session = context.read<SessionState>();
+                        if (session.user == null) return;
+                        await session.api.deleteContact(session.user!.id, c.id);
+                        setState(() => _contacts = _contacts.where((x) => x.id != c.id).toList());
+                      },
+                    ),
+                  const Padding(
+                    padding: EdgeInsets.all(16),
+                    child: Text('길게 누르면 삭제됩니다.', textAlign: TextAlign.center),
+                  ),
+                ],
+              ),
+      ),
+    );
+  }
+}

mobile/lib/screens/conversation_list_screen.dart

@@ -1,12 +1,15 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
+import '../models/models.dart';
+import '../services/api_client.dart';
 import '../state/session_state.dart';
 import 'autonomy_settings_screen.dart';
 import 'chat_screen.dart';
+import 'contacts_screen.dart';
+import 'inbox_screen.dart';
+import 'onboarding_tone_screen.dart';
 
-/// v1 scaffold: conversation list is local until list API exists on core-backend.
-/// Enter a conversation id to open a room (matches current Go API shape).
 class ConversationListScreen extends StatefulWidget {
   const ConversationListScreen({super.key});
 
@@ -15,24 +18,103 @@ class ConversationListScreen extends StatefulWidget {
 }
 
 class _ConversationListScreenState extends State<ConversationListScreen> {
-  final _convId = TextEditingController(text: '1');
-  final _rooms = <int>{1};
+  List<ConversationSummary> _rooms = [];
+  bool _loading = true;
+  String? _error;
 
   @override
-  void dispose() {
-    _convId.dispose();
-    super.dispose();
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    final session = context.read<SessionState>();
+    setState(() {
+      _loading = true;
+      _error = null;
+    });
+    try {
+      final list = await session.api.listConversations();
+      list.sort((a, b) => b.id.compareTo(a.id));
+      setState(() => _rooms = list);
+    } on ApiException catch (e) {
+      setState(() => _error = '대화 목록 실패 (${e.statusCode}): ${e.body}');
+    } finally {
+      setState(() => _loading = false);
+    }
+  }
+
+  Future<void> _createConversation() async {
+    final peerCtrl = TextEditingController();
+    final ok = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('새 대화'),
+        content: TextField(
+          controller: peerCtrl,
+          keyboardType: TextInputType.number,
+          autofocus: true,
+          decoration: const InputDecoration(
+            labelText: '상대 사용자 ID',
+            helperText: '연락처에 등록된 상대면 연락처 화면에서 시작하는 편이 낫습니다.',
+            border: OutlineInputBorder(),
+          ),
+        ),
+        actions: [
+          TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('취소')),
+          FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('만들기')),
+        ],
+      ),
+    );
+    if (ok != true || !mounted) return;
+    final session = context.read<SessionState>();
+    final me = session.user;
+    final peer = int.tryParse(peerCtrl.text.trim());
+    if (me == null || peer == null) return;
+    try {
+      final conv = await session.api.createConversation(userIds: [me.id, peer]);
+      if (!mounted) return;
+      await Navigator.of(context).push(
+        MaterialPageRoute(builder: (_) => ChatScreen(conversationId: conv.id)),
+      );
+      await _load();
+    } on ApiException catch (e) {
+      setState(() => _error = '대화 생성 실패 (${e.statusCode}): ${e.body}');
+    }
   }
 
   @override
   Widget build(BuildContext context) {
     final session = context.watch<SessionState>();
-    final rooms = _rooms.toList()..sort();
+    final me = session.user?.id;
 
     return Scaffold(
       appBar: AppBar(
         title: Text('분신 · ${session.user?.displayName ?? ''}'),
         actions: [
+          IconButton(
+            tooltip: '사후 알림',
+            onPressed: () {
+              Navigator.of(context).push(MaterialPageRoute(builder: (_) => const InboxScreen()));
+            },
+            icon: const Icon(Icons.notifications_none),
+          ),
+          IconButton(
+            tooltip: '연락처',
+            onPressed: () async {
+              await Navigator.of(context).push(MaterialPageRoute(builder: (_) => const ContactsScreen()));
+              await _load();
+            },
+            icon: const Icon(Icons.contacts_outlined),
+          ),
+          IconButton(
+            tooltip: '말투 샘플',
+            onPressed: () {
+              Navigator.of(context).push(MaterialPageRoute(builder: (_) => const OnboardingToneScreen()));
+            },
+            icon: const Icon(Icons.record_voice_over_outlined),
+          ),
           IconButton(
             tooltip: '자율성 설정',
             onPressed: () {
@@ -44,47 +126,52 @@ class _ConversationListScreenState extends State<ConversationListScreen> {
           ),
         ],
       ),
-      body: ListView(
-        children: [
-          Padding(
-            padding: const EdgeInsets.all(16),
-            child: Row(
-              children: [
-                Expanded(
-                  child: TextField(
-                    controller: _convId,
-                    keyboardType: TextInputType.number,
-                    decoration: const InputDecoration(
-                      labelText: '대화방 ID',
-                      border: OutlineInputBorder(),
-                      helperText: 'core-backend에 대화방 목록 API가 생기기 전 임시 진입',
+      floatingActionButton: FloatingActionButton(
+        onPressed: _createConversation,
+        child: const Icon(Icons.chat),
+      ),
+      body: RefreshIndicator(
+        onRefresh: _load,
+        child: _loading
+            ? ListView(children: const [SizedBox(height: 120), Center(child: CircularProgressIndicator())])
+            : ListView(
+                children: [
+                  if (_error != null)
+                    Padding(
+                      padding: const EdgeInsets.all(16),
+                      child: Text(_error!, style: TextStyle(color: Theme.of(context).colorScheme.error)),
                     ),
-                  ),
-                ),
-                const SizedBox(width: 8),
-                FilledButton(
-                  onPressed: () {
-                    final id = int.tryParse(_convId.text.trim());
-                    if (id == null) return;
-                    setState(() => _rooms.add(id));
-                  },
-                  child: const Text('추가'),
-                ),
-              ],
-            ),
-          ),
-          for (final id in rooms)
-            ListTile(
-              leading: const CircleAvatar(child: Icon(Icons.chat_bubble_outline)),
-              title: Text('대화방 #$id'),
-              subtitle: const Text('탭해서 입장'),
-              onTap: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(builder: (_) => ChatScreen(conversationId: id)),
-                );
-              },
-            ),
-        ],
+                  if (_rooms.isEmpty)
+                    const Padding(
+                      padding: EdgeInsets.all(24),
+                      child: Text('대화방이 없습니다. + 버튼이나 연락처에서 대화를 시작하세요.'),
+                    ),
+                  for (final room in _rooms)
+                    ListTile(
+                      leading: CircleAvatar(
+                        child: Icon(room.isGroup ? Icons.groups_outlined : Icons.chat_bubble_outline),
+                      ),
+                      title: Text(me == null ? '대화방 #${room.id}' : room.titleFor(me)),
+                      subtitle: Text(
+                        [
+                          'ID ${room.id}',
+                          if (room.twinDisabledByPeer) '상대가 분신 거부',
+                        ].join(' · '),
+                      ),
+                      onTap: () async {
+                        await Navigator.of(context).push(
+                          MaterialPageRoute(
+                            builder: (_) => ChatScreen(
+                              conversationId: room.id,
+                              title: me == null ? null : room.titleFor(me),
+                            ),
+                          ),
+                        );
+                        await _load();
+                      },
+                    ),
+                ],
+              ),
       ),
     );
   }

mobile/lib/screens/inbox_screen.dart

@@ -0,0 +1,103 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../models/models.dart';
+import '../services/api_client.dart';
+import '../state/session_state.dart';
+import 'chat_screen.dart';
+
+/// Post-hoc notification inbox: escalation logs that need human attention.
+/// Twin "되돌리기" remains available inside each chat bubble (PRD).
+class InboxScreen extends StatefulWidget {
+  const InboxScreen({super.key});
+
+  @override
+  State<InboxScreen> createState() => _InboxScreenState();
+}
+
+class _InboxScreenState extends State<InboxScreen> {
+  List<EscalationLogEntry> _logs = [];
+  bool _loading = true;
+  String? _error;
+
+  @override
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    final session = context.read<SessionState>();
+    if (session.user == null) return;
+    setState(() {
+      _loading = true;
+      _error = null;
+    });
+    try {
+      final logs = await session.api.listEscalationLogs(session.user!.id);
+      setState(() => _logs = logs);
+    } on ApiException catch (e) {
+      setState(() => _error = '알림 로드 실패 (${e.statusCode})');
+    } finally {
+      setState(() => _loading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Scaffold(
+      appBar: AppBar(title: const Text('사후 알림')),
+      body: RefreshIndicator(
+        onRefresh: _load,
+        child: _loading
+            ? ListView(children: const [SizedBox(height: 120), Center(child: CircularProgressIndicator())])
+            : ListView(
+                children: [
+                  Padding(
+                    padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+                    child: Text(
+                      '분신이 보류·차단한 내용과 에스컬레이션 기록입니다. '
+                      '이미 보낸 분신 메시지는 해당 대화방에서 되돌릴 수 있습니다.',
+                      style: theme.textTheme.bodyMedium?.copyWith(color: theme.colorScheme.onSurfaceVariant),
+                    ),
+                  ),
+                  if (_error != null)
+                    Padding(
+                      padding: const EdgeInsets.all(16),
+                      child: Text(_error!, style: TextStyle(color: theme.colorScheme.error)),
+                    ),
+                  if (_logs.isEmpty)
+                    const Padding(
+                      padding: EdgeInsets.all(24),
+                      child: Text('새 알림이 없습니다.'),
+                    ),
+                  for (final log in _logs)
+                    ListTile(
+                      leading: Icon(
+                        log.resolved ? Icons.check_circle_outline : Icons.warning_amber_rounded,
+                        color: log.resolved ? theme.colorScheme.primary : theme.colorScheme.error,
+                      ),
+                      title: Text(log.reason.isEmpty ? '에스컬레이션' : log.reason),
+                      subtitle: Text(
+                        [
+                          '대화방 #${log.conversationId}',
+                          if (log.messageSnippet.isNotEmpty) log.messageSnippet,
+                          log.createdAt.toLocal().toString().split('.').first,
+                        ].join('\n'),
+                      ),
+                      isThreeLine: true,
+                      onTap: () {
+                        Navigator.of(context).push(
+                          MaterialPageRoute(
+                            builder: (_) => ChatScreen(conversationId: log.conversationId),
+                          ),
+                        );
+                      },
+                    ),
+                ],
+              ),
+      ),
+    );
+  }
+}

mobile/lib/screens/onboarding_tone_screen.dart

@@ -0,0 +1,93 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../state/session_state.dart';
+
+/// Phase 1 onboarding skeleton: capture a few style samples locally.
+/// Fine copy / import UX waits for human PoC (#1) — do not invent §3 defaults here.
+class OnboardingToneScreen extends StatefulWidget {
+  const OnboardingToneScreen({super.key});
+
+  @override
+  State<OnboardingToneScreen> createState() => _OnboardingToneScreenState();
+}
+
+class _OnboardingToneScreenState extends State<OnboardingToneScreen> {
+  final _samples = List.generate(4, (_) => TextEditingController());
+  var _seeded = false;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    if (_seeded) return;
+    _seeded = true;
+    final existing = context.read<SessionState>().styleExamples;
+    for (var i = 0; i < existing.length && i < _samples.length; i++) {
+      _samples[i].text = existing[i];
+    }
+  }
+
+  @override
+  void dispose() {
+    for (final c in _samples) {
+      c.dispose();
+    }
+    super.dispose();
+  }
+
+  Future<void> _save({required bool markDone}) async {
+    final session = context.read<SessionState>();
+    await session.saveToneSamples(
+      _samples.map((c) => c.text).toList(),
+      markDone: markDone,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('말투 샘플'),
+        actions: [
+          TextButton(
+            onPressed: () => context.read<SessionState>().skipToneOnboarding(),
+            child: const Text('나중에'),
+          ),
+        ],
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.all(24),
+          children: [
+            Text('분신이 따라 쓸 말투', style: theme.textTheme.headlineSmall?.copyWith(fontWeight: FontWeight.w700)),
+            const SizedBox(height: 8),
+            Text(
+              '자주 쓰는 짧은 문장을 3~4개 적어 주세요. 기기에만 저장되며, 초안 요청 시 참고로 씁니다. '
+              '최종 문구·수집 방식은 사람 PoC 이후에 다듬습니다.',
+              style: theme.textTheme.bodyMedium?.copyWith(color: theme.colorScheme.onSurfaceVariant),
+            ),
+            const SizedBox(height: 24),
+            for (var i = 0; i < _samples.length; i++) ...[
+              TextField(
+                controller: _samples[i],
+                maxLines: 2,
+                decoration: InputDecoration(
+                  labelText: '샘플 ${i + 1}',
+                  hintText: i == 0 ? '예: ㅇㅇ 알겠음' : null,
+                  border: const OutlineInputBorder(),
+                ),
+              ),
+              const SizedBox(height: 12),
+            ],
+            const SizedBox(height: 8),
+            FilledButton(
+              onPressed: () => _save(markDone: true),
+              child: const Text('저장하고 시작'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

mobile/lib/services/api_client.dart

@@ -76,6 +76,67 @@ class ApiClient {
     );
   }
 
+  Future<List<ConversationSummary>> listConversations() async {
+    final obj = await _getObject('/conversations');
+    final list = (obj['conversations'] as List<dynamic>? ?? const []);
+    return list.map((e) => ConversationSummary.fromJson(e as Map<String, dynamic>)).toList();
+  }
+
+  Future<ConversationSummary> createConversation({
+    required List<int> userIds,
+    int? contactId,
+    bool isGroup = false,
+  }) async {
+    final json = await _json('POST', '/conversations', body: {
+      'user_ids': userIds,
+      'is_group': isGroup,
+      if (contactId != null) 'contact_id': contactId,
+    });
+    final rawIds = json['user_ids'] as List<dynamic>? ?? userIds;
+    return ConversationSummary(
+      id: json['id'] as int,
+      isGroup: json['is_group'] as bool? ?? isGroup,
+      userIds: rawIds.map((e) => e as int).toList(),
+      twinDisabledByPeer: false,
+    );
+  }
+
+  Future<List<ChatMessage>> listMessages(int conversationId) async {
+    final obj = await _getObject('/conversations/$conversationId/messages');
+    final list = (obj['messages'] as List<dynamic>? ?? const []);
+    return list.map((e) => ChatMessage.fromJson(e as Map<String, dynamic>)).toList();
+  }
+
+  Future<List<Contact>> listContacts(int userId) async {
+    final obj = await _getObject('/users/$userId/contacts');
+    final list = (obj['contacts'] as List<dynamic>? ?? const []);
+    return list.map((e) => Contact.fromJson(e as Map<String, dynamic>)).toList();
+  }
+
+  Future<Contact> createContact({
+    required int userId,
+    required String displayName,
+    int? contactUserId,
+    String relationshipNote = '',
+  }) async {
+    final json = await _json('POST', '/users/$userId/contacts', body: {
+      'display_name': displayName,
+      if (contactUserId != null) 'contact_user_id': contactUserId,
+      'relationship_note': relationshipNote,
+    });
+    return Contact.fromJson(json);
+  }
+
+  Future<void> deleteContact(int userId, int contactId) async {
+    await _json('DELETE', '/users/$userId/contacts/$contactId');
+  }
+
+  Future<List<EscalationLogEntry>> listEscalationLogs(int userId) async {
+    final obj = await _getObject('/users/$userId/escalation-logs');
+    final list = (obj['escalation_logs'] as List<dynamic>? ?? const []);
+    return list.map((e) => EscalationLogEntry.fromJson(e as Map<String, dynamic>)).toList();
+  }
+
   Future<ChatMessage> sendMessage({
     required int conversationId,
     required int senderId,
@@ -126,24 +187,6 @@ class ApiClient {
     return list.map((e) => WhitelistRule.fromJson(e as Map<String, dynamic>)).toList();
   }
 
-  Future<List<Map<String, dynamic>>> listConversations() async {
-    final obj = await _getObject('/conversations');
-    final list = (obj['conversations'] as List<dynamic>? ?? const []);
-    return list.cast<Map<String, dynamic>>();
-  }
-
-  Future<Map<String, dynamic>> createConversation({
-    required List<int> userIds,
-    int? contactId,
-    bool isGroup = false,
-  }) async {
-    return _json('POST', '/conversations', body: {
-      'user_ids': userIds,
-      'is_group': isGroup,
-      if (contactId != null) 'contact_id': contactId,
-    });
-  }
-
   Future<WhitelistRule> addWhitelist(int userId, String topicKeyword) async {
     final json = await _json('POST', '/users/$userId/whitelist-rules', body: {
       'topic_keyword': topicKeyword,

mobile/lib/state/session_state.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -12,11 +14,15 @@ class SessionState extends ChangeNotifier {
   AutonomyLevel autonomyLevel = AutonomyLevel.L0;
   String? error;
   bool loading = false;
+  bool toneOnboardingDone = false;
+  List<String> styleExamples = const [];
 
   static const _kUserId = 'user_id';
   static const _kDisplayName = 'display_name';
   static const _kInvite = 'invite_code';
   static const _kToken = 'session_token';
+  static const _kToneDone = 'tone_onboarding_done';
+  static const _kStyleExamples = 'style_examples_json';
 
   Future<void> restore() async {
     final prefs = await SharedPreferences.getInstance();
@@ -24,6 +30,12 @@ class SessionState extends ChangeNotifier {
     final name = prefs.getString(_kDisplayName);
     final invite = prefs.getString(_kInvite);
     final token = prefs.getString(_kToken);
+    toneOnboardingDone = prefs.getBool(_kToneDone) ?? false;
+    final rawExamples = prefs.getString(_kStyleExamples);
+    if (rawExamples != null && rawExamples.isNotEmpty) {
+      final decoded = jsonDecode(rawExamples) as List<dynamic>;
+      styleExamples = decoded.map((e) => e.toString()).where((s) => s.trim().isNotEmpty).toList();
+    }
     if (id != null && name != null && invite != null) {
       user = User(id: id, displayName: name, inviteCode: invite);
       _api.authToken = token;
@@ -38,11 +50,13 @@ class SessionState extends ChangeNotifier {
     try {
       final result = await _api.signup(inviteCode: inviteCode, displayName: displayName);
       user = result.user;
+      toneOnboardingDone = false;
       final prefs = await SharedPreferences.getInstance();
       await prefs.setInt(_kUserId, result.user.id);
       await prefs.setString(_kDisplayName, result.user.displayName);
       await prefs.setString(_kInvite, result.user.inviteCode);
       await prefs.setString(_kToken, result.token);
+      await prefs.setBool(_kToneDone, false);
     } on ApiException catch (e) {
       error = '가입 실패 (${e.statusCode}): ${e.body}';
     } catch (e) {
@@ -53,6 +67,23 @@ class SessionState extends ChangeNotifier {
     }
   }
 
+  Future<void> saveToneSamples(List<String> samples, {bool markDone = true}) async {
+    final cleaned = samples.map((s) => s.trim()).where((s) => s.isNotEmpty).toList();
+    styleExamples = cleaned;
+    if (markDone) toneOnboardingDone = true;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_kStyleExamples, jsonEncode(cleaned));
+    if (markDone) await prefs.setBool(_kToneDone, true);
+    notifyListeners();
+  }
+
+  Future<void> skipToneOnboarding() async {
+    toneOnboardingDone = true;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_kToneDone, true);
+    notifyListeners();
+  }
+
   Future<void> setAutonomy(AutonomyLevel level) async {
     if (user == null) return;
     try {

mobile/test/models_test.dart

@@ -0,0 +1,37 @@
+import 'package:bunsin_mobile/models/models.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('ConversationSummary parses list payload', () {
+    final c = ConversationSummary.fromJson({
+      'id': 3,
+      'is_group': false,
+      'twin_disabled_by_peer': true,
+      'user_ids': [1, 2],
+      'created_at': '2026-07-30T00:00:00Z',
+    });
+    expect(c.id, 3);
+    expect(c.userIds, [1, 2]);
+    expect(c.twinDisabledByPeer, isTrue);
+    expect(c.titleFor(1), '대화 · 상대 #2');
+  });
+
+  test('EscalationLogEntry and Contact parse', () {
+    final log = EscalationLogEntry.fromJson({
+      'id': 9,
+      'conversation_id': 2,
+      'reason': 'money',
+      'message_snippet': '보내줄게',
+      'resolved': false,
+      'created_at': '2026-07-30T01:00:00Z',
+    });
+    expect(log.reason, 'money');
+    final contact = Contact.fromJson({
+      'id': 1,
+      'display_name': '친구',
+      'contact_user_id': 7,
+      'relationship_note': '대학',
+    });
+    expect(contact.contactUserId, 7);
+  });
+}