The feedback form relies on instance SMTP being configured, which
MapleDeploy customers won't do. Without SMTP it silently logs to
the server and shows a misleading success message. Removed the
navbar button, onboarding modal, subscription page link, API
endpoint, and all associated dead code.
- Validate content (required string, min:10, max:2000) in OtherController@feedback
- Register 'feedback' named rate limiter (3/min per user or IP) in RouteServiceProvider
- Apply throttle:feedback middleware to POST /api/feedback
- Forward to Discord with allowed_mentions.parse=[] and a 5s HTTP timeout
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
