Clean and organize project structure

Major reorganization:
- Created scripts/ directory for all utility scripts
- Created config/ directory for configuration files
- Moved all test files to tests/ directory
- Updated all script paths to work with new structure
- Updated README.md with new project structure diagram

New structure:
├── src/          # Source code (API + MCP)
├── scripts/      # Utility scripts (start-*.sh, docs_server.py, etc.)
├── tests/        # All test files and debug utilities
├── config/       # Configuration files (JSON, Caddy config)
├── docs/         # Documentation website
└── logs/         # Log files

All scripts updated to use relative paths from project root.
Documentation updated with new folder structure.

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

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

config/mcp_config.json

@@ -0,0 +1,13 @@
+{
+  "mcpServers": {
+    "langmem": {
+      "command": "python",
+      "args": ["/home/klas/langmem-project/src/mcp/server.py"],
+      "cwd": "/home/klas/langmem-project",
+      "env": {
+        "LANGMEM_API_URL": "http://localhost:8765",
+        "LANGMEM_API_KEY": "langmem_api_key_2025"
+      }
+    }
+  }
+}