feat: NanoClaude 프로덕션 통합 — Docker, Caddy, aiosqlite 로깅

- docker-compose에 nanoclaude 서비스 추가 (포트 8100)
- Caddy /nano/* → nanoclaude 리버스 프록시 (SSE flush)
- aiosqlite 요청/응답 로깅 (request_logs 테이블)
- .env.example, CLAUDE.md 업데이트

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

nanoclaude/services/worker.py

@@ -4,7 +4,10 @@ from __future__ import annotations
 
 import asyncio
 import logging
+from time import time
 
+from config import settings
+from db.database import log_completion, log_request
 from models.schemas import JobStatus
 from services.exaone_adapter import stream_chat
 from services.job_manager import Job, job_manager
@@ -18,6 +21,14 @@ HEARTBEAT_INTERVAL = 4.0
 
 async def run(job: Job) -> None:
     """EXAONE 호출 → SSE 이벤트 발행."""
+    start_time = time()
+
+    # DB 로깅: 요청 기록
+    try:
+        await log_request(job.id, job.message, settings.exaone_model, job.created_at)
+    except Exception:
+        logger.warning("Failed to log request for job %s", job.id, exc_info=True)
+
     try:
         # --- ACK ---
         await state_stream.push(job.id, "ack", {"message": "요청을 확인했습니다. 분석을 시작합니다."})
@@ -50,9 +61,19 @@ async def run(job: Job) -> None:
         if not collected:
             job_manager.set_status(job.id, JobStatus.failed)
             await state_stream.push(job.id, "error", {"message": "EXAONE으로부터 응답을 받지 못했습니다."})
+            status = "failed"
         else:
             job_manager.set_status(job.id, JobStatus.completed)
             await state_stream.push(job.id, "done", {"message": "완료"})
+            status = "completed"
+
+        # DB 로깅: 완료 기록
+        latency_ms = (time() - start_time) * 1000
+        response_text = "".join(collected)
+        try:
+            await log_completion(job.id, status, len(response_text), latency_ms, time())
+        except Exception:
+            logger.warning("Failed to log completion for job %s", job.id, exc_info=True)
 
     except asyncio.CancelledError:
         job_manager.set_status(job.id, JobStatus.cancelled)