Inline account_risk_state DDL in init_db; use autocommit for migration.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/migrate_sqlite_to_postgres.py

@@ -13,11 +13,34 @@ ROOT = Path(__file__).resolve().parents[1]
 if str(ROOT) not in sys.path:
     sys.path.insert(0, str(ROOT))
 
+try:
+    import psycopg
+    from psycopg.rows import dict_row
+except ImportError:
+    psycopg = None  # type: ignore[assignment]
+    dict_row = None  # type: ignore[assignment]
+
 from dotenv import load_dotenv
 
 load_dotenv(ROOT / ".env")
 
-from db_conn import DB_PATH, connect_db, db_backend, is_postgres, rollback_if_postgres  # noqa: E402
+from db_conn import DB_PATH, db_backend, is_postgres  # noqa: E402
+
+
+def _migrate_conn():
+    """迁移专用连接（autocommit，避免单表失败污染事务）。"""
+    if not is_postgres():
+        raise RuntimeError("需要 PostgreSQL")
+    url = (os.getenv("DATABASE_URL") or "").strip()
+    raw = psycopg.connect(url, row_factory=dict_row, autocommit=True)
+    try:
+        with raw.cursor() as cur:
+            cur.execute("SET TIME ZONE 'Asia/Shanghai'")
+    except Exception:
+        pass
+    from db_conn import DbConnection
+
+    return DbConnection("postgres", raw, from_pool=False)
 
 
 def _sqlite_tables(conn: sqlite3.Connection) -> list[str]:
@@ -70,7 +93,7 @@ def migrate(*, sqlite_path: str | None = None, dry_run: bool = False) -> dict:
 
     try:
         for table in tables:
-            tbl = connect_db()
+            tbl = _migrate_conn()
             try:
                 pg_cols = _pg_columns(tbl, table)
                 if not pg_cols:
@@ -97,11 +120,9 @@ def migrate(*, sqlite_path: str | None = None, dry_run: bool = False) -> dict:
                     tbl.execute(insert_sql, tuple(row[c] for c in cols))
                 if "id" in cols:
                     _reset_sequences(tbl, table, "id")
-                tbl.commit()
                 stats[table] = len(rows)
                 print(f"  {table}: {len(rows)} 行")
             except Exception as exc:
-                rollback_if_postgres(tbl)
                 raise RuntimeError(f"迁移表 {table} 失败: {exc}") from exc
             finally:
                 tbl.close()