Create a shared CleanupPreviewDeployment action that unifies PR cleanup logic across all Git providers. Previously, GitHub had comprehensive cleanup (cancels active deployments, kills helper containers, removes all PR containers), while GitLab, Bitbucket, and Gitea only did basic cleanup (delete preview record and remove one container by name).
This fix ensures all providers properly clean up orphaned PR containers when a PR is closed/merged, preventing security issues and resource waste. Also fixes early return bug in GitLab webhook handler.
Fixes#2610🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
This feature stored incoming webhooks during maintenance mode and replayed them
when maintenance ended. The behavior adds unnecessary complexity without clear
value. Standard approach is to let webhooks fail during maintenance and let
senders retry.
Removes:
- Listener classes that handled maintenance mode events and webhook replay
- Maintenance mode checks from all webhook controllers (Github, Gitea, Gitlab, Bitbucket, Stripe)
- webhooks-during-maintenance filesystem disk configuration
- Feature mention from CHANGELOG
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
