feat(hooks): add comment-checker hook for detecting unnecessary comments

- Port Go comment-checker to TypeScript using web-tree-sitter
- Support 38 programming languages via tree-sitter-wasms
- Filter out valid comments: BDD patterns, lint directives, docstrings, shebangs
- Integrate with OpenCode's tool.execute.before/after hooks
- Attach feedback to Write/Edit/MultiEdit tool output

src/hooks/index.ts

@@ -2,3 +2,4 @@ export * from "./todo-continuation-enforcer"
 export * from "./context-window-monitor"
 export * from "./session-notification"
 export * from "./session-recovery"
+export * from "./comment-checker"