v1.2.0

Minor feature release.

New features:
- JSONL output (--json); CDX --from/--to/--status/--mime filters; --proxy;
  --version; colored --help.

Fixes & hardening:
- Multi-domain -o output; terminal-safe output; graceful Ctrl-C; page-count
  retry + --stdin batch resilience; numeric-flag validation (no more panics);
  no double-wildcard in --subs.

Quality:
- Terminal-aware progress bar with ETA; end-to-end pipeline tests under -race;
  CI runs vet+tests before building; Go 1.24.