fix(freehire-search): reject detail URLs on other hosts instead of asking the API for their last segment (#622) (#623)

* fix(freehire-search): reject detail URLs on other hosts instead of asking the API for their last segment

normalizeSlug took the segment after "/jobs/" from ANY string, so a
Greenhouse apply link - which is what a freehire search result's own url
field carries - was reduced to its last path segment and detail
requested /api/v1/jobs/1, then reported NOT_FOUND for a URL that was
never a freehire posting. Every other portal CLI rejects an off-host
detail URL with BAD_ID (#447, #430, #499); freehire was the last one
trusting the path.

Parse URLs for real: freehire.me (apex or any subdomain, scheme optional)
or the host of FREEHIRE_API_URL for a self-hosted instance, plus a
/jobs/<slug> path, yields the slug; other hosts, look-alike and userinfo
hosts, and non-job freehire pages exit 1 with BAD_ID before any request.
Bare slugs are unchanged.

Five new normalizeSlug cases and a handler-level test that pastes the
search fixture's own apply URL into detail with fetch stubbed; the
off-host cases fail on master.

* changelog: place the #623 entry under [Unreleased]

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Mads Lorentzen <madslorentzen_17@hotmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

.agents/skills/freehire-search/SKILL.md

@@ -124,7 +124,7 @@ bun run .agents/skills/freehire-search/cli/src/cli.ts detail <slug|url> [--forma
 ```
 
 `slug` is the `id` from a `search` result (e.g. `golang-zensar-2bxu6dxm`). You may
-also pass a full `https://freehire.me/jobs/<slug>` URL. Returns the full (HTML-stripped)
+also pass a full `https://freehire.me/jobs/<slug>` URL. A URL on any other host - including the employer apply link a search result's `url` field carries - is rejected with `BAD_ID` before any request. Returns the full (HTML-stripped)
 description, skills, region/country, and — when the posting is enriched — seniority,
 category, employment type, and salary. `salary` keeps its period when freehire records
 one (`INR 300000–300000/year`, `INR 12000/month`); compare pay only in one period.