fix(jobdanmark-search): render a JSON-LD description as text instead of passing the markup through (#516)

The JSON-LD branch of detail emitted jobPosting.description verbatim, so
`detail --format plain` printed
`description: <p>Vi søger en udvikler til R&D.</p><ul><li>Python & Go</li>...`
while the rendered-HTML branch of the same command printed one clean
line per paragraph and bullet. Two description shapes from one command
depending on which page layout it hit, and the markup landed in
/scrape's stored snippet and /rank's agent context as-is. The portal
contract (/add-portal Step 4) asks for readable text: entities decoded,
tags stripped, paragraph breaks preserved.

Render the HTML through node-html-parser's structuredText - one line per
block element, entities decoded, tags gone - which is the shape the
fallback already produces. A plain-text description is unchanged, an
absent one stays "".

The JSON-LD test that pinned the raw <p>...</p> now expects the text,
plus two new cases; the HTML case fails on master.

CHANGELOG.md

@@ -15,6 +15,21 @@ per-file diff commands.
 
 ### Fixed
 
+- **`jobdanmark-search detail` renders a JSON-LD description as text instead of passing
+  the markup through** (`.agents/skills/jobdanmark-search/cli/src/commands/detail.ts`,
+  `tests/detail-jsonld.test.ts`) - the JSON-LD branch emitted `jobPosting.description`
+  verbatim, so `detail --format plain` printed
+  `description: <p>Vi søger en udvikler til R&D.</p><ul><li>Python & Go</li>...` while the
+  rendered-HTML branch of the same command printed one clean line per paragraph and bullet:
+  two description shapes from one command depending on which page layout it hit, and the
+  markup landed in `/scrape`'s stored snippet and `/rank`'s agent context as-is. The
+  portal contract (`/add-portal` Step 4) asks for "readable text (entities decoded, tags
+  stripped, paragraph breaks preserved)". The JSON-LD branch now renders the HTML through
+  `node-html-parser`'s `structuredText` - one line per block element, entities decoded, tags
+  gone - which is the shape the fallback already produces. A plain-text description is
+  unchanged, an absent one stays `""`. The JSON-LD test that pinned the raw `<p>...</p>` now
+  expects the text, plus two new cases; the HTML case fails on master.
+
 - **`job_key.py` no longer gives two postings one key when a title or company is partly
   non-Latin** (`tools/job_key.py`, `tests/test_job_key.py`) - the hash fallbacks from #487
   and #502 fired only when the slug was completely empty, so a mixed-script name kept its