Merge origin/main into feat/cursor-cli

Merges latest main branch changes including:
- MCP server support and configuration
- Pipeline configuration system
- Prompt customization settings
- GitHub issue comments in validation
- Auth middleware improvements
- Various UI/UX improvements

All Cursor CLI features preserved:
- Multi-provider support (Claude + Cursor)
- Model override capabilities
- Phase model configuration
- Provider tabs in settings

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/ui/src/components/views/settings-view/hooks/use-settings-view.ts

@@ -4,6 +4,8 @@ export type SettingsViewId =
   | 'api-keys'
   | 'claude'
   | 'providers'
+  | 'mcp-servers'
+  | 'prompts'
   | 'ai-enhancement'
   | 'phase-models'
   | 'appearance'