- UpdateTablo SQL: add color = \$4 so color is preserved across title/description edits
- GetTabloByID SQL: add AND user_id = \$2 to push ownership enforcement into the DB layer
- DeleteTablo SQL: add AND user_id = \$2 to push authorization into the DB layer
- sqlc bindings regenerated (UpdateTabloParams+Color, GetTabloByIDParams, DeleteTabloParams)
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>