zyterm 1.1.3 — warning cleanup

zyterm 1.1.3 — warning cleanup

Small patch release after v1.1.2.

Fixed

• USB port discovery build warnings — src/serial/port_discover.c
  now bounds-checks sysfs attribute path construction for idVendor
  and idProduct, which removes fortified snprintf truncation
  warnings on strict Linux builds without changing runtime behaviour.

Validation

• Rebuilt successfully as zyterm 1.1.3
• Full test suite still green: 239/239 passing
  • 208 unit
  • 11 e2e
  • 20 pty

See CHANGELOG.md for the full project history.