fix(sqlite): WAL + busy_timeout 120s standardized across all labs

8개 lab의 _conn() 함수에 표준 동시성 패턴 통일:
- timeout=120.0 (connection 획득)
- PRAGMA journal_mode=WAL (reader/writer 분리)
- PRAGMA busy_timeout=120000 (트랜잭션 충돌 시 120초 대기)

stock-lab/screener/router.py 의 검증된 패턴(d9b6122) 을 lotto, stock-lab(메인),
music-lab, blog-lab, realestate-lab, agent-office, personal, travel-proxy 로 확산.
기존 'database is locked' 오류 윈도우를 흡수.

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

agent-office/app/db.py

@@ -9,9 +9,10 @@ from .config import DB_PATH
 
 def _conn() -> sqlite3.Connection:
     os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
-    conn = sqlite3.connect(DB_PATH, timeout=10)
+    conn = sqlite3.connect(DB_PATH, timeout=120.0)
     conn.row_factory = sqlite3.Row
     conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn
 
 

blog-lab/app/db.py

@@ -8,9 +8,10 @@ from .config import DB_PATH
 
 def _conn() -> sqlite3.Connection:
     os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
-    conn = sqlite3.connect(DB_PATH)
+    conn = sqlite3.connect(DB_PATH, timeout=120.0)
     conn.row_factory = sqlite3.Row
     conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn
 
 

lotto/app/db.py

@@ -9,8 +9,10 @@ DB_PATH = "/app/data/lotto.db"
 
 def _conn() -> sqlite3.Connection:
     os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
-    conn = sqlite3.connect(DB_PATH)
+    conn = sqlite3.connect(DB_PATH, timeout=120.0)
     conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn
 
 def _ensure_column(conn: sqlite3.Connection, table: str, col: str, ddl: str) -> None:

music-lab/app/db.py

@@ -9,8 +9,10 @@ DB_PATH = "/app/data/music.db"
 
 def _conn() -> sqlite3.Connection:
     os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
-    conn = sqlite3.connect(DB_PATH)
+    conn = sqlite3.connect(DB_PATH, timeout=120.0)
     conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn
 
 

personal/app/db.py

@@ -9,9 +9,10 @@ DB_PATH = "/app/data/personal.db"
 
 
 def _conn():
-    c = sqlite3.connect(DB_PATH, timeout=10)
+    c = sqlite3.connect(DB_PATH, timeout=120.0)
     c.row_factory = sqlite3.Row
     c.execute("PRAGMA journal_mode=WAL;")
+    c.execute("PRAGMA busy_timeout=120000;")
     c.execute("PRAGMA foreign_keys=ON;")
     return c
 

realestate-lab/app/db.py

@@ -12,9 +12,10 @@ DB_PATH = os.getenv("REALESTATE_DB_PATH", "/app/data/realestate.db")
 
 
 def _conn():
-    c = sqlite3.connect(DB_PATH, timeout=10)
+    c = sqlite3.connect(DB_PATH, timeout=120.0)
     c.row_factory = sqlite3.Row
     c.execute("PRAGMA journal_mode=WAL;")
+    c.execute("PRAGMA busy_timeout=120000;")
     c.execute("PRAGMA foreign_keys=ON;")
     return c
 

stock-lab/app/db.py

@@ -12,8 +12,10 @@ def _conn() -> sqlite3.Connection:
     parent = os.path.dirname(db_path)
     if parent:
         os.makedirs(parent, exist_ok=True)
-    conn = sqlite3.connect(db_path)
+    conn = sqlite3.connect(db_path, timeout=120.0)
     conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn
 
 def init_db():

travel-proxy/app/db.py

@@ -7,9 +7,10 @@ DB_PATH = os.getenv("TRAVEL_DB_PATH", "/data/thumbs/travel.db")
 
 def _conn() -> sqlite3.Connection:
     os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
-    conn = sqlite3.connect(DB_PATH)
+    conn = sqlite3.connect(DB_PATH, timeout=120.0)
     conn.row_factory = sqlite3.Row
     conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=120000")
     return conn