- Add react-router-dom with NavBar component (LTT + RAG Database tabs)
- Extract AppContent into LTTPage, add RAGDatabasePage placeholder
- Refactor App.tsx to BrowserRouter + Routes layout
- Switch ResponsePanel to react-markdown for rich formatting
- Fix ResponsePanel test for markdown rendering
- Update RAG prompt to cite source name instead of number
- Save Phase 1 enhancement plan (.plans/phase1_enhancement_plan.md)
- Mark Phase 1.1 and 1.2 as complete with test results
- Update acceptance criteria checklist
- Add Services Status table showing implemented/pending components
- Mark Phase 1.3 tasks that are already done (LLM client, retrieval, response gen)