更新

backend/models/db_migrate.py

@@ -196,6 +196,54 @@ def migrate_rules_table(conn) -> None:
         )
 
 
+def migrate_roles_table(conn) -> None:
+    """Ensure roles table exists (create_all usually handles this; keep as safety net)."""
+    try:
+        insp = inspect(conn)
+        if insp.has_table("roles"):
+            return
+    except Exception:
+        return
+    dialect = _dialect(conn)
+    if dialect == "postgresql":
+        conn.execute(
+            text(
+                """
+                CREATE TABLE roles (
+                    id SERIAL PRIMARY KEY,
+                    code VARCHAR(50) NOT NULL UNIQUE,
+                    label VARCHAR(100) NOT NULL,
+                    description VARCHAR(255),
+                    is_system BOOLEAN DEFAULT FALSE,
+                    is_admin BOOLEAN DEFAULT FALSE,
+                    permissions TEXT NOT NULL DEFAULT '[]',
+                    created_at TIMESTAMP,
+                    updated_at TIMESTAMP
+                )
+                """
+            )
+        )
+    else:
+        conn.execute(
+            text(
+                """
+                CREATE TABLE IF NOT EXISTS roles (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    code VARCHAR(50) NOT NULL UNIQUE,
+                    label VARCHAR(100) NOT NULL,
+                    description VARCHAR(255),
+                    is_system BOOLEAN DEFAULT 0,
+                    is_admin BOOLEAN DEFAULT 0,
+                    permissions TEXT NOT NULL DEFAULT '[]',
+                    created_at DATETIME,
+                    updated_at DATETIME
+                )
+                """
+            )
+        )
+    add_index_if_missing(conn, "roles", "ix_roles_code", ("code",))
+
+
 def migrate_users_table(conn) -> None:
     add_column_if_missing(
         conn,