- Add REPO_DIRS constant; still_exists now only checks tokens that start
with a known repo top-level dir, ignoring plugin names (caddy-dns/gandi),
make command fragments (tf-init/plan), and role-relative paths.
- Add test_still_exists_ignores_non_repo_tokens (was failing before fix).
- Add test_nudge_line_overdue_on_age to close coverage gap on age threshold.
- Add load_signals docstring.
- Replace manual --today date parsing with datetime.date.fromisoformat type
converter so malformed dates give a clean argparse error.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
