Update documentation for MCP integration

Comprehensive documentation updates reflecting MCP integration:

README.md:
- Add MCP Integration and Tests Passing badges
- Enhance MCP section with "Tested and Working" status
- Add links to both setup and testing guides

docs/MCP_SETUP.md:
- Update status to reflect production testing
- Add integration testing verification notes
- Confirm all 6 tools working with natural language

CLAUDE.md:
- Add prominent MCP Integration section at top
- List all 6 available MCP tools with descriptions
- Add setup instructions and production status

docs/TEST_MCP_IN_CLAUDE_CODE.md (moved from root):
- Relocate testing guide to docs/ for better organization
- Provides step-by-step MCP integration testing workflow
- Documents complete test suite for all 6 tools

All documentation now accurately reflects the fully tested and
working MCP integration verified in production Claude Code environment.

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

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

docs/MCP_SETUP.md

@@ -2,6 +2,11 @@
 
 Step-by-step guide to set up the Skill Seeker MCP server with Claude Code.
 
+**✅ Fully Tested and Working**: All 6 MCP tools verified in production use with Claude Code
+- ✅ 25 comprehensive unit tests (100% pass rate)
+- ✅ Integration tested via actual Claude Code MCP protocol
+- ✅ All 6 tools working with natural language commands
+
 ---
 
 ## Table of Contents
@@ -68,9 +73,21 @@ Successfully installed mcp-0.9.0 requests-2.31.0 beautifulsoup4-4.12.3
 
 ```bash
 # Test MCP server can start
-python3 mcp/server.py
+timeout 3 python3 mcp/server.py || echo "Server OK (timeout expected)"
 
-# You should see MCP protocol initialization (Ctrl+C to exit)
+# Should exit cleanly or timeout (both are normal)
+```
+
+**Optional: Run Tests**
+
+```bash
+# Install test dependencies
+pip3 install pytest
+
+# Run MCP server tests (25 tests)
+python3 -m pytest tests/test_mcp_server.py -v
+
+# Expected: 25 passed in ~0.3s
 ```
 
 ### Step 3: Note Your Repository Path