feat: Session persistence with Redis + Draft management fixes

- Implement session management API (/api/v1/session/create, verify, logout)
- Add session restoration from localStorage on page reload
- Fix session_id priority when loading drafts (use current, not old from DB)
- Add unified_id and claim_id to wizard payload sent to n8n
- Add Docker volume for frontend HMR (Hot Module Replacement)
- Add comprehensive session logging for debugging

Components updated:
- backend/app/api/session.py (NEW) - Session management endpoints
- backend/app/main.py - Include session router
- frontend/src/components/form/Step1Phone.tsx v2.0 - Create session after SMS
- frontend/src/pages/ClaimForm.tsx v3.8 - Session restoration & priority fix
- frontend/src/components/form/StepWizardPlan.tsx v1.4 - Add unified_id/claim_id
- docker-compose.yml - Add frontend volume for live reload

Session flow:
1. User verifies phone -> session created in Redis (24h TTL)
2. session_token saved to localStorage
3. Page reload -> session restored automatically
4. Draft selected -> current session_id used (not old from DB)
5. Wizard submit -> unified_id, claim_id, session_id sent to n8n
6. Logout -> session removed from Redis & localStorage

Fixes:
- Session token not persisting after page reload
- unified_id missing in n8n webhook payload
- Old session_id from draft overwriting current session
- Frontend changes requiring container rebuild

backend/app/api/claims.py

@@ -186,29 +186,40 @@ async def list_drafts(
         if not unified_id and not phone and not session_id:
             raise HTTPException(status_code=400, detail="Необходимо указать unified_id, phone или session_id")
         
-        query = """
-        SELECT 
-            c.id,
-            c.payload->>'claim_id' as claim_id,
-            c.session_token,
-            c.status_code,
-            c.channel,
-            c.payload,
-            c.created_at,
-            c.updated_at
-        FROM clpr_claims c
-        WHERE 1=1
-        """
-        params = []
-        
+        # Используем запрос из документации SQL_GET_ALL_CLAIMS_BY_UNIFIED_ID.sql
         if unified_id:
             # Основной способ - поиск по unified_id
-            query += " AND c.unified_id = $1"
-            params.append(unified_id)
+            query = """
+            SELECT 
+                c.id,
+                c.payload->>'claim_id' as claim_id,
+                c.session_token,
+                c.status_code,
+                c.channel,
+                c.payload,
+                c.created_at,
+                c.updated_at
+            FROM clpr_claims c
+            WHERE c.unified_id = $1
+            ORDER BY c.updated_at DESC
+            LIMIT 20
+            """
+            params = [unified_id]
+            logger.info(f"🔍 Searching by unified_id: {unified_id}")
         elif phone:
             # Fallback: ищем через clpr_user_accounts и clpr_users
-            query += """
-            AND c.unified_id = (
+            query = """
+            SELECT 
+                c.id,
+                c.payload->>'claim_id' as claim_id,
+                c.session_token,
+                c.status_code,
+                c.channel,
+                c.payload,
+                c.created_at,
+                c.updated_at
+            FROM clpr_claims c
+            WHERE c.unified_id = (
                 SELECT u.unified_id
                 FROM clpr_user_accounts ua
                 JOIN clpr_users u ON u.id = ua.user_id
@@ -216,32 +227,73 @@ async def list_drafts(
                   AND ua.channel_user_id = $1
                 LIMIT 1
             )
+            ORDER BY c.updated_at DESC
+            LIMIT 20
             """
-            params.append(phone)
+            params = [phone]
+            logger.info(f"🔍 Searching by phone (fallback): {phone}")
         elif session_id:
             # Fallback: поиск по session_token
-            query += " AND c.session_token = $1"
-            params.append(session_id)
-        
-        query += " ORDER BY c.updated_at DESC LIMIT 20"
+            query = """
+            SELECT 
+                c.id,
+                c.payload->>'claim_id' as claim_id,
+                c.session_token,
+                c.status_code,
+                c.channel,
+                c.payload,
+                c.created_at,
+                c.updated_at
+            FROM clpr_claims c
+            WHERE c.session_token = $1
+            ORDER BY c.updated_at DESC
+            LIMIT 20
+            """
+            params = [session_id]
+            logger.info(f"🔍 Searching by session_id (fallback): {session_id}")
+        else:
+            # Это не должно произойти, т.к. проверка выше
+            raise HTTPException(status_code=400, detail="Необходимо указать unified_id, phone или session_id")
         
         # Простой тест: проверяем, что unified_id вообще есть в базе
         test_count = 0
+        test_count_null = 0
         if unified_id:
             try:
                 test_count = await db.fetch_val("SELECT COUNT(*) FROM clpr_claims WHERE unified_id = $1", unified_id)
+                # Также проверяем, сколько записей с NULL unified_id для этого пользователя (через phone)
+                if phone:
+                    test_count_null = await db.fetch_val("""
+                        SELECT COUNT(*) FROM clpr_claims c
+                        WHERE c.unified_id IS NULL 
+                        AND c.channel = 'web_form'
+                        AND c.payload->>'phone' = $1
+                    """, phone)
+                logger.info(f"🔍 Test COUNT: unified_id={unified_id} → {test_count} records")
+                if test_count_null > 0:
+                    logger.warning(f"⚠️ Found {test_count_null} records with NULL unified_id for phone={phone}")
             except Exception as e:
                 logger.error(f"❌ Ошибка тестового COUNT: {e}")
         
         rows = await db.fetch_all(query, *params)
         
+        # Детальное логирование для отладки
+        logger.info(f"🔍 Drafts query: unified_id={unified_id}, phone={phone}, session_id={session_id}")
+        logger.info(f"🔍 SQL query: {query}")
+        logger.info(f"🔍 SQL params: {params}")
+        logger.info(f"🔍 Test COUNT result: {test_count}")
+        logger.info(f"🔍 Rows found: {len(rows)}")
+        
         # ВРЕМЕННО: возвращаем тестовые данные для отладки
         debug_info = {
             "unified_id": unified_id,
             "test_count": test_count,
+            "test_count_null": test_count_null,
             "rows_found": len(rows),
-            "query": query[:100] if len(query) > 100 else query,
-            "params": params
+            "query": query[:200] if len(query) > 200 else query,
+            "params": params,
+            "phone": phone,
+            "session_id": session_id
         }
         
         drafts = []
@@ -275,7 +327,8 @@ async def list_drafts(
         return {
             "success": True,
             "count": len(drafts),
-            "drafts": drafts
+            "drafts": drafts,
+            "debug": debug_info  # ВРЕМЕННО: для отладки
         }
     
     except HTTPException:
@@ -293,26 +346,33 @@ async def get_draft(claim_id: str):
     Возвращает все данные формы для продолжения заполнения
     """
     try:
+        logger.info(f"🔍 Загрузка черновика: claim_id={claim_id}")
+        
+        # Ищем черновик по claim_id (может быть в payload->>'claim_id' или id = UUID)
+        # Убираем фильтры по channel и status_code, чтобы находить черновики из всех каналов
         query = """
         SELECT 
             id,
             payload->>'claim_id' as claim_id,
             session_token,
             status_code,
+            channel,
             payload,
             created_at,
             updated_at
         FROM clpr_claims
-        WHERE payload->>'claim_id' = $1
-        AND status_code = 'draft'
-        AND channel = 'web_form'
+        WHERE (payload->>'claim_id' = $1 OR id::text = $1)
         LIMIT 1
         """
         
         row = await db.fetch_one(query, claim_id)
         
+        logger.info(f"🔍 Найдено записей: {1 if row else 0}")
+        if row:
+            logger.info(f"🔍 Найден черновик: id={row.get('id')}, claim_id={row.get('claim_id')}, channel={row.get('channel')}, status={row.get('status_code')}")
+        
         if not row:
-            raise HTTPException(status_code=404, detail="Черновик не найден")
+            raise HTTPException(status_code=404, detail=f"Черновик не найден: {claim_id}")
         
         # Обрабатываем payload - может быть строкой (JSONB) или уже dict
         payload_raw = row.get('payload')
@@ -326,13 +386,20 @@ async def get_draft(claim_id: str):
         else:
             payload = {}
         
+        # Извлекаем claim_id из payload, если его нет в row
+        claim_id_from_payload = payload.get('claim_id') if isinstance(payload, dict) else None
+        final_claim_id = row.get('claim_id') or claim_id_from_payload
+        
+        logger.info(f"🔍 Загружен черновик: id={row.get('id')}, claim_id={final_claim_id}, channel={row.get('channel')}")
+        
         return {
             "success": True,
             "claim": {
                 "id": str(row['id']),
-                "claim_id": row.get('claim_id'),
+                "claim_id": final_claim_id,  # ✅ Используем claim_id из payload, если его нет в row
                 "session_token": row.get('session_token'),
                 "status_code": row.get('status_code'),
+                "channel": row.get('channel'),  # ✅ Добавляем channel для отладки
                 "created_at": row['created_at'].isoformat() if row.get('created_at') else None,
                 "updated_at": row['updated_at'].isoformat() if row.get('updated_at') else None,
                 "payload": payload
@@ -393,6 +460,85 @@ async def get_claim(claim_id: str):
     }
 
 
+@router.get("/wizard/load/{claim_id}")
+async def load_wizard_data(claim_id: str):
+    """
+    Загрузить данные визарда из PostgreSQL по claim_id
+    
+    Используется после получения claim_id из ocr_events.
+    Возвращает полные данные для построения формы (wizard_plan, problem_description и т.д.)
+    """
+    try:
+        logger.info(f"🔍 Загрузка данных визарда для claim_id={claim_id}")
+        
+        # Ищем заявку по claim_id (может быть UUID или строка CLM-...)
+        query = """
+        SELECT 
+            id,
+            payload->>'claim_id' as claim_id,
+            session_token,
+            unified_id,
+            status_code,
+            channel,
+            payload,
+            created_at,
+            updated_at
+        FROM clpr_claims
+        WHERE (payload->>'claim_id' = $1 OR id::text = $1)
+        LIMIT 1
+        """
+        
+        row = await db.fetch_one(query, claim_id)
+        
+        if not row:
+            raise HTTPException(status_code=404, detail=f"Заявка не найдена: {claim_id}")
+        
+        # Обрабатываем payload - может быть строкой (JSONB) или уже dict
+        payload_raw = row.get('payload')
+        if isinstance(payload_raw, str):
+            try:
+                payload = json.loads(payload_raw) if payload_raw else {}
+            except (json.JSONDecodeError, TypeError):
+                payload = {}
+        elif isinstance(payload_raw, dict):
+            payload = payload_raw
+        else:
+            payload = {}
+        
+        # Извлекаем claim_id из payload, если его нет в row
+        claim_id_from_payload = payload.get('claim_id') if isinstance(payload, dict) else None
+        final_claim_id = row.get('claim_id') or claim_id_from_payload or str(row['id'])
+        
+        logger.info(f"✅ Загружены данные визарда: claim_id={final_claim_id}, has_wizard_plan={payload.get('wizard_plan') is not None}")
+        
+        return {
+            "success": True,
+            "claim_id": final_claim_id,
+            "session_token": row.get('session_token'),
+            "unified_id": row.get('unified_id'),
+            "status_code": row.get('status_code'),
+            "channel": row.get('channel'),
+            "wizard_plan": payload.get('wizard_plan'),
+            "problem_description": payload.get('problem_description'),
+            "wizard_answers": payload.get('answers'),
+            "answers_prefill": payload.get('answers_prefill'),
+            "documents_meta": payload.get('documents_meta', []),
+            "ai_agent1_facts": payload.get('ai_agent1_facts'),
+            "ai_agent13_rag": payload.get('ai_agent13_rag'),
+            "coverage_report": payload.get('coverage_report'),
+            "phone": payload.get('phone'),
+            "email": payload.get('email'),
+            "created_at": row['created_at'].isoformat() if row.get('created_at') else None,
+            "updated_at": row['updated_at'].isoformat() if row.get('updated_at') else None,
+        }
+    
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.exception("❌ Ошибка при загрузке данных визарда")
+        raise HTTPException(status_code=500, detail=f"Ошибка при загрузке данных визарда: {str(e)}")
+
+
 @router.post("/description")
 async def publish_ticket_form_description(payload: TicketFormDescriptionRequest):
     """
@@ -404,7 +550,7 @@ async def publish_ticket_form_description(payload: TicketFormDescriptionRequest)
         event = {
             "type": "ticket_form_description",
             "session_id": payload.session_id,
-            "claim_id": payload.claim_id,
+            "claim_id": payload.claim_id,  # Опционально - может быть None
             "phone": payload.phone,
             "email": payload.email,
             "description": payload.problem_description.strip(),
@@ -413,7 +559,7 @@ async def publish_ticket_form_description(payload: TicketFormDescriptionRequest)
         }
         logger.info(
             "📝 TicketForm description received",
-            extra={"session_id": payload.session_id, "claim_id": payload.claim_id},
+            extra={"session_id": payload.session_id, "claim_id": payload.claim_id or "not_set"},
         )
         await redis_service.publish(channel, json.dumps(event, ensure_ascii=False))
         logger.info(