Add PATCH/PUT update actions to all three entity controllers with
editor role authorization. Routes updated to include :update action.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- validate granblue_id via HEAD request to GBF CDN
- create characters with editor role check (role >= 7)
- async image download job with Redis status polling
- download_status endpoint for progress tracking
- Create IdResolvable concern for flexible ID lookups
- Update character/summon/weapon controllers to use concern
- Support both UUID and granblue_id in API calls
