Add a Language Gate - no dimension currently checks language requirements (#275)

Nothing in the framework checks a posting's language requirements
against what the candidate actually speaks. It is not one of the five
Scoring Dimensions in 04-job-evaluation.md, it is not checked in
/scrape's Step 3 fit assessment, and it is not a field in /rank's JSON
output - even though /apply's Step 1 already extracts a posting's
required language generically, with nowhere to report a mismatch to.

This adds a Language Gate, structured like the existing Eligibility
Gate (read the posting, classify against profile data, hard-stop on a
real mismatch), built on a new structured Languages table in CLAUDE.md
/ 01-candidate-profile.md. /setup now asks for it directly (Path C), or
infers it from a CV/LinkedIn export (Paths A/B - LinkedIn exports
already carry a self-rated Languages section).

The gate compares a posting's stated language requirements against
that table with three outcomes:

- Requires a language not declared at all -> hard FAIL, never
  presented.
- Requires a higher level in a language that is declared (e.g. "fluent
  English" against a declared B1/B2) -> FLAG, not an auto-reject -
  scored and drafted normally, with the gap surfaced so the candidate
  judges it themselves (a "fluent" bar reads very differently from a
  strict employer vs. one that's flexible on it).
- Requires a language at or below the declared level -> clean PASS.

Wired through the three places that need it: /scrape (Step 3), /rank
(new language_gate/language_note fields alongside the existing
location veto - both are now persisted to seen_jobs.json, not just
used transiently to decide one run's shortlist), and /apply (Step 1's
language extraction now has somewhere to report to).

Out of scope, deliberately: this does not touch the free-form
Deal-breakers list or how it's used elsewhere (e.g. Scoring Dimension
4's relocation check) - that's a separate question this change takes
no position on.

Validated with two live-testing passes against real, unfetched
postings (not fabricated text) across 3 portals and 3 market languages
(Danish, German, Spanish/Argentina): 8/8 postings gated correctly in
the first pass, including ambiguous real-world wording ("you
communicate well in English") a rigid rule would have gotten wrong. A
second pass, run specifically to force a hard-FAIL case, found one
(a Danish posting requiring the ability to read Danish) and confirmed
it persists correctly and would be excluded from /rank's shortlist.

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

.claude/skills/job-scraper/SKILL.md

@@ -113,6 +113,8 @@ For each new job, do a rapid fit check (NOT the full evaluation from `04-job-eva
 - **Medium match**: Role is adjacent to your experience
 - **Low match**: Role requires significant skills you lack
 
+**Language override:** before assigning a match level, check the posting against `04-job-evaluation.md`'s Language Gate (a required language you haven't declared at all in your CLAUDE.md Languages table). A required language that's entirely undeclared overrides skill fit: mark it **Low** regardless of how well the skills align, and name it in the highlight bullets so it isn't buried under an otherwise-good-looking match. A **declared** language at a requirement that reads higher than your declared level is *not* an override — score fit normally, but add a red-flag bullet under that job's highlights (Step 5) quoting the posting's requirement next to your declared level, so the gap is visible without being auto-downgraded.
+
 ### Step 4: Deduplicate & Store
 
 1. Add ALL fetched jobs (new and skipped) to `seen_jobs.json` with structure:
@@ -203,7 +205,7 @@ health: <portal-name> - broken (0 results for the SKILL.md test query and a broa
 |---|-----|-------|---------|----------|----------|-----|
 | 1 | High | ... | ... | ... | ... | [Link](...) |
 
-If Step 2.5 flagged a mass-posting pattern, note it in the Title cell (e.g. "Frontend Developer (posted in 6 cities)") rather than burying it - it's a signal the user should see at a glance, not just in the detail highlights below.
+If Step 2.5 flagged a mass-posting pattern, note it in the Title cell (e.g. "Frontend Developer (posted in 6 cities)") rather than burying it. Do the same for a declared-language-insufficient-level flag from the Language Gate (e.g. "Backend Engineer ⚠ fluent English required") - both are signals the user should see at a glance, not just in the detail highlights below.
 
 ### High-Match Highlights
 For each high-match job, add 2-3 bullet points: