- Redirects default to 302 so browsers stop permanently caching the hop —
click analytics stay accurate and destination edits take effect for
returning visitors. 301 is a per-link opt-in (create/edit/API).
- Links can carry a password: visitors get a branded unlock page at /:code
and POST to /:code/unlock. Unlocks always redirect with 302.
- Missing, expired, and quota-limited links now show branded standalone
visitor pages (404/410/429) instead of bouncing to the marketing site
with ?error= query params.
- Clicks are recorded through the async pipeline with bot/crawler tagging
(UA heuristics), GeoLite2 country lookup (ip-api fallback gated behind
GEO_API_FALLBACK), and the IP_ANONYMIZE policy applied at write time.
- Deletes stamp deleted_at for later hard-purge.
- Dashboard: redirect-type selector and password set/replace/remove in the
edit form, lock badge on protected links.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>