fix: remove tree-sitter-go to resolve peer dependency conflict

- tree-sitter-go@0.23.4 peer depends on tree-sitter@^0.21.1
- Conflicts with tree-sitter@0.22.4 used by tree-sitter-python
- Go AST already falls back to generic export/deps extraction
- Add .npmrc with legacy-peer-deps=true as safety net
- npm install --omit=dev now works cleanly

package.json

@@ -46,7 +46,6 @@
     "p-limit": "^7.3.0",
     "picocolors": "^1.1.1",
     "tree-sitter": "^0.22.4",
-    "tree-sitter-go": "^0.23.4",
     "tree-sitter-python": "^0.23.6",
     "tree-sitter-typescript": "^0.23.2"
   }