feat: govern file lifecycle and connector writes

src/govoplan_files/backend/routes/spaces.py

@@ -27,6 +27,7 @@ from govoplan_files.backend.storage.connector_spaces import (
     list_connector_spaces_for_user,
     soft_delete_connector_space,
     update_connector_space,
+    validate_connector_space_write_mode,
 )
 from govoplan_files.backend.storage.connector_policy import (
     ConnectorPolicyDenied,
@@ -145,6 +146,7 @@ def create_file_connector_space(
         )
         if not decision.allowed:
             raise ConnectorPolicyDenied(decision)
+        validate_connector_space_write_mode(profile, read_only=payload.read_only)
         space = create_connector_space(
             session,
             tenant_id=principal.tenant_id,
@@ -156,6 +158,7 @@ def create_file_connector_space(
             library_id=payload.library_id,
             remote_path=payload.remote_path,
             sync_mode=payload.sync_mode,
+            read_only=payload.read_only,
             metadata=payload.metadata,
             is_admin=_is_admin(principal),
         )
@@ -201,7 +204,11 @@ def update_file_connector_space(
     except FileStorageError as exc:
         raise _http_error(exc, not_found=True) from exc
     try:
-        if payload.library_id is not None or payload.remote_path is not None:
+        if (
+            payload.library_id is not None
+            or payload.remote_path is not None
+            or payload.read_only is not None
+        ):
             profile = _visible_connector_profile(
                 session, principal, space.connector_profile_id
             )
@@ -217,6 +224,14 @@ def update_file_connector_space(
             )
             if not decision.allowed:
                 raise ConnectorPolicyDenied(decision)
+            validate_connector_space_write_mode(
+                profile,
+                read_only=(
+                    payload.read_only
+                    if payload.read_only is not None
+                    else space.read_only
+                ),
+            )
         update_connector_space(
             session,
             space,
@@ -225,6 +240,7 @@ def update_file_connector_space(
             library_id=payload.library_id,
             remote_path=payload.remote_path,
             sync_mode=payload.sync_mode,
+            read_only=payload.read_only,
             is_active=payload.is_active,
             metadata=payload.metadata,
             is_admin=_is_admin(principal),