移除 users 审计人字段强制映射

Co-authored-by: multica-agent <github@multica.ai>

api/app/core/database.py

@@ -103,42 +103,6 @@ def _ensure_user_timestamp_column_compatibility() -> None:
             )
 
 
-def _ensure_user_audit_column_compatibility() -> None:
-    """
-    Keep `users` audit actor columns aligned with current ORM mapping.
-
-    Legacy deployments may still use `create_user` / `update_user`,
-    while current models expect `created_by` / `updated_by`.
-    """
-    if not database_url.startswith("postgresql"):
-        return
-
-    schema = settings.resolved_db_schema
-    with engine.begin() as connection:
-        db_inspector = inspect(connection)
-        if not db_inspector.has_table("users", schema=schema):
-            return
-
-        column_names = {
-            column["name"]
-            for column in db_inspector.get_columns("users", schema=schema)
-        }
-
-        if "created_by" not in column_names and "create_user" in column_names:
-            connection.execute(text("ALTER TABLE users RENAME COLUMN create_user TO created_by"))
-            logger.warning(
-                "Detected legacy users.create_user; renamed to users.created_by for schema compatibility.",
-            )
-            column_names.remove("create_user")
-            column_names.add("created_by")
-
-        if "updated_by" not in column_names and "update_user" in column_names:
-            connection.execute(text("ALTER TABLE users RENAME COLUMN update_user TO updated_by"))
-            logger.warning(
-                "Detected legacy users.update_user; renamed to users.updated_by for schema compatibility.",
-            )
-
-
 def get_db() -> Generator[Session, None, None]:
     db = SessionLocal()
     try:
@@ -177,7 +141,6 @@ def init_db() -> None:
 
     _ensure_user_pk_column_compatibility()
     _ensure_user_timestamp_column_compatibility()
-    _ensure_user_audit_column_compatibility()
     Base.metadata.create_all(bind=engine)
     with SessionLocal() as db:
         local_hosts = {"db", "localhost", "127.0.0.1", "::1"}

api/app/models/user.py

@@ -56,17 +56,6 @@ class User(Base):
         default=utcnow,
         onupdate=utcnow,
     )
-    create_user: Mapped[str | None] = mapped_column(
-        "created_by",
-        String(64),
-        nullable=True,
-    )
-    update_user: Mapped[str | None] = mapped_column(
-        "updated_by",
-        String(64),
-        nullable=True,
-    )
-
     @property
     def last_login_at(self) -> datetime | None:
         return self.updated_at