What: Significant improvements to Language Server Protocol client reliability and error handling. Details:
- New spawn event handling ensures process fully started before using stdio
- Added stdin error handler for write failures
- Added connection-level error and close handlers
- New cleanup flag prevents spurious errors during intentional shutdown
- Enhanced listener cleanup removes stdin/stderr handlers on stop
- Trace setup now has error handling
- Evidence:
w02()function at line 304885 in v2.0.50