Tier 2: shareable conversation URLs backed by Qdrant

fix: use VITE_API_URL for ingest SSE stream, not hardcoded localhost

feat: persistent agent memory + README generator

Fix PostHog blocked by ad blockers via Vercel reverse proxy

Add model selector: dropdown UI + /agent/models endpoint

feat: Mermaid diagrams, agent fixes, deployment prep

Major feature: interactive diagrams, MCP integration, and bug fixes

checkpoint: pre-UI-overhaul state

Cleanup + slash prompt autocomplete + CLAUDE.md file hygiene rule

UI: Add MCP server status panel to sidebar

Fix agent SSE error handling — use agent_error event, never return 503

Fix duplicate graph, agent error handling, and UI clarity

Phase 6: Code Knowledge Graph (D3 force-directed call graph)

Phase 5: MCP server + Agentic RAG (ReAct loop)

Fix 5 bugs found in expert review

Phase 4: deployment config (Vercel + Render + GitHub Actions CI)

Phase 3: React UI — chat, repo management, streaming, source cards