* Rename legacy controller subsystem (LSPController, websocket controller, controller events, and base classes)
into clarified client module for LSP communication
* Structure around LSPManager and LSPManagerClient to handle orchestration and client lifecycle
* Update plugin integration to use LSPManager instead of LSPController
* Simplify architecture by reducing controller indirection
- 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.
- Moved cut_to_temp_buffer and paste_temp_buffer commands to plugin
- Remove temporary cut buffer logic from SourceView
- Remove related keybindings (Ctrl+K / Ctrl+U)
- Fix word-end detection in ProviderResponseCacheBase to avoid extending past line end
- Improve completion controller to support RequestCompletionEvent with optional provider filtering
- Add GetActiveViewEvent handling in SourceViewsController
- Ensure view scrolls to cursor after buffer switch via GLib.idle_add
- Emit focus-in-event after DnD file load to restore focus behavior
- Prevent "buffer" pseudo-path from interfering with loaded file filtering
- Remove obsolete AGENTS.md from LSP manager plugin
- Moved prettify_json and lsp_completer plugins to sub categories
- Add filter_out_loaded_files to prevent opening already-loaded files
- Refactor code events into single events module
- Fix signal blocking during file load operations
- Include READONLY state in source view lifecycle handling
