v1.3.0

Minor feature release.

- Live streaming: results are flushed as they are found, not buffered until the
  run ends (pipeable, watchable).
- ProjectDiscovery-style CLI conventions (stdlib-only): --silent, --stats,
  --list/-l, --retries, --nc/--no-color, [INF]/[WRN]/[ERR] logging, and PD-style
  aliases (-t, -rl, --jsonl, --output). Composes cleanly in recon pipelines.
- Version now resolves from Go build info, so `go install ...@latest` reports
  the tag instead of "dev".