FTP compatibility and reliability release.
- Adds robust command framing, ASCII transfers, modern listings, restart/append support, and unrestricted IPv4 active mode.
- Hardens connection lifecycle, shutdown, timeouts, partial I/O, and malformed-command handling.
- Improves command-server, NetCtl, no-sleep, logging, and initialization safety.
- Keeps the canonical services on ports 1337 and 1338.