fix(fc3h): split semicolon-stacked statements (E702) and bridge v-dialog v-model to avoid prop write

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

backend/app/api/system_backup.py

@@ -30,7 +30,8 @@ _BACKUP_SETTINGS_FIELDS = (
 
 
 def _bad(error: str, *, status: int = 400, **extra):
-    body = {"error": error}; body.update(extra)
+    body = {"error": error}
+    body.update(extra)
     return jsonify(body), status
 
 

backend/app/tasks/backup.py

@@ -54,7 +54,9 @@ def backup_db_task(self, *, tag: str | None = None,
             kind="db", status="running", tag=tag,
             triggered_by=triggered_by, started_at=now, manifest={},
         )
-        session.add(row); session.commit(); session.refresh(row)
+        session.add(row)
+        session.commit()
+        session.refresh(row)
         run_id = row.id
 
     try:
@@ -101,7 +103,9 @@ def backup_images_task(self, *, tag: str | None = None,
             kind="images", status="running", tag=tag,
             triggered_by=triggered_by, started_at=now, manifest={},
         )
-        session.add(row); session.commit(); session.refresh(row)
+        session.add(row)
+        session.commit()
+        session.refresh(row)
         run_id = row.id
 
     try:
@@ -156,7 +160,9 @@ def restore_db_task(self, *, source_backup_run_id: int) -> dict:
             restored_from_id=src.id,
             manifest={"source_sql_path": src.sql_path},
         )
-        session.add(marker); session.commit(); session.refresh(marker)
+        session.add(marker)
+        session.commit()
+        session.refresh(marker)
         marker_id = marker.id
         sql_path = src.sql_path
 
@@ -200,7 +206,9 @@ def restore_images_task(self, *, source_backup_run_id: int) -> dict:
             restored_from_id=src.id,
             manifest={"source_tar_path": src.tar_path},
         )
-        session.add(marker); session.commit(); session.refresh(marker)
+        session.add(marker)
+        session.commit()
+        session.refresh(marker)
         marker_id = marker.id
         tar_path = src.tar_path