Fix: add missing parser/docgen, rename parser→go_parser, add uv packaging

- parser.py renamed to go_parser.py (avoids Python builtin conflict)
- docgen.py was missing from flat structure
- Added pyproject.toml for uv
- Updated .mcp.json to use uv run
- Updated README for uv workflow

.mcp.json

@@ -1,8 +1,8 @@
 {
   "mcpServers": {
     "dev-intel": {
-      "command": "python",
-      "args": ["mcp_server.py"],
+      "command": "uv",
+      "args": ["run", "python", "mcp_server.py"],
       "cwd": "."
     }
   }