- Add GET /api/memory and PUT /api/memory routes with project-scoped file access and validation
- Add fetchMemory and saveMemory dashboard API helpers for memory file operations
- Extend the Settings modal Memory section with inline FileEditor loading, dirty tracking, save action, and read-only behavior when memory is disabled
- Add SettingsModal tests covering memory load, loading state, save flow, and empty-content handling
- Add memoryEnabled boolean setting to core types and default settings
- Add Memory section toggle to SettingsModal dashboard UI
- Integrate memoryEnabled check in executor and triage engine prompts
- Add tests for settings UI, executor prompt behavior, and triage prompt behavior
- Update SettingsModal section count test for the new Memory section
- Change export filename from 'kb-settings' to 'fusion-settings' in SettingsModal
- Add comprehensive tests for settings export functionality including filename branding
- Remove stale dashboard-footer-mobile-layout test and unused App test
- Fix minor CSS and README cleanup
