Template
- Add `_lsp_java_class_file_contents` request to fetch contents of compiled Java classes via LSP (`java/classFileContents`). - Handle `java/classFileContents` responses by opening a new buffer with Java syntax highlighting and inserting the returned source. - Update definition handling to pass URI and range, enabling precise cursor placement after navigation. - Detect `jdt://` URIs in `textDocument/definition` responses and request class file contents instead of direct navigation. - Move goto navigation logic into `LSPServerEventsMixin`, using event system to access the active view and position the cursor. - Expose `emit` and `emit_to` to the response cache for event dispatching. - Restrict completion activation to `USER_REQUESTED`. - Add TODO note about mapping language IDs to dedicated response handlers.