Update TODO.md with completed tasks for version 1.4.2

- Added 'Recently Completed' section documenting all v1.4.2 improvements
- Marked ping frame parsing fix as completed
- Marked WebSocket reconnection logic as completed
- Marked professional watchdog scripts as completed
- Marked enhanced init scripts as completed
- Marked build system fixes as completed
- Marked Debian package improvements as completed
- Marked binary reuse logic as completed
- Marked documentation updates as completed

TODO.md

 # WebSocket SSH - Future Enhancements Roadmap
 
+## Recently Completed (v1.4.2)
+- [x] **Ping Frame Parsing Fix**: Fixed WebSocket ping frame handling in wsssh.c
+- [x] **WebSocket Reconnection Logic**: Added automatic reconnection for wsssh.c and wsscp.c
+- [x] **Professional Watchdog Scripts**: Implemented wssshd-watchdog and wssshc-watchdog for high availability
+- [x] **Enhanced Init Scripts**: Updated init scripts to use watchdog for daemon supervision
+- [x] **Build System Fixes**: Fixed --server-only option and Debian package build issues
+- [x] **Debian Package Improvements**: Resolved Makefile syntax errors, compatibility conflicts, and directory creation issues
+- [x] **Binary Reuse Logic**: Implemented intelligent reuse of existing wssshd binaries to avoid unnecessary rebuilds
+- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, and DOCUMENTATION.md for version 1.4.2
+
 ## Web Interface Improvements
 - [ ] **Better web terminal interface and functionality fix**
   - Improve xterm.js integration and responsiveness