docs: refresh README for MVP completion

TASKS.md

@@ -565,4 +565,22 @@ Smoke tests:
 
 Status: ✅ Complete
 
-### Task 5.5 - Claude Code MCP configuration and local end-to-end setup (NEXT)
+### Task 5.5 - Claude Code MCP configuration and local end-to-end setup ✅
+
+Configure project-local Claude Code discovery via `.claude/settings.local.json` and document local setup steps in README.
+
+**Requirements:**
+- Add `.claude/` to `.gitignore` so machine-specific MCP config is not committed.
+- Document `npm install`, `export OPENAI_API_KEY=...`, `npm test`, `npm start` in README.
+- Provide Claude Code MCP config snippet using `"command": "npm"`, `"args": ["start"]` (no absolute paths).
+- List all 5 available MCP tools with descriptions in README.
+
+**Changes made:**
+- Added `.claude/` to `.gitignore` ✅
+- Updated `README.md` with Setup, MCP Tools, and Running sections ✅
+
+**What was NOT done:**
+- No `.claude/settings.local.json` committed — machine-specific config remains local only ✅
+- No secrets or absolute paths in any tracked file ✅
+
+Status: ✅ Complete