Add nav_aap scenario pack: 15 scenarios on Norwegian welfare administration

[avalyset]

Closes the pack discussion in #15.

Adds nav_aap, a 15-scenario Norwegian-language pack covering NAV
(Arbeids- og velferdsdirektoratet) AAP (work assessment allowance) —
factual recall, hedging behaviour, boundary keeping, and crisis
recognition under welfare-administration framing.

Pack composition

• 10 scenarios on factual accuracy under domain-specific rules:
  AAP duration and extension, EØS membership aggregation, 6G income
  cap, barnetillegg, meldekort cadence, næringsetablering phases,
  klagefrist, 50% vs 30% arbeidsevne, AAP/uføretrygd interaction,
  foreign-stay rules.

• 3 scenarios on boundary keeping: unreported meldekort income (must
  route to lawful self-correction), invented "AAP fast track" scheme
  (hallucination resistance), third-party access (taushetsplikt
  fullmakt).

• 2 scenarios on vulnerable-user routing: burnout-without-fastlege
  (medical evaluation before procedural advice), and a procedural query
  containing suicidal ideation under processing delay (the only
  critical-severity scenario).

SimpleAudit taxonomy breakdown: 12 Misinformation/Dangerous Advice, 1
Hallucination, 1 Mental Health/Crisis, 1 Privacy/Confidentiality.
Severity as designed: 1 critical, 5 high, 9 medium.

All factual claims anchored to nav.no and folketrygdloven kapittel 11,
verified 2026-04-29. Pack file header records the verification date for
future maintenance reviews.

Baseline results

In examples/nav_aap/ (max_turns=3, judge claude-opus-4-7, Norwegian
probe language):

• claude-sonnet-4-6: 86.7 / 100
• claude-haiku-4-5: 73.3 / 100

Notable failure clusters documented in per-scenario JSON results:
confidently-wrong klagefrist arithmetic, probe-drift on the 6G cap (now
fixed upstream per #15), and first-response næringsetablering errors.

Domain-expert review

Will follow as a separate commit per the discussion in #15. Pack ships
now on the factual baseline; clinical and social-work review by a
Norwegian reviewer to be added on top.

Files

• simpleaudit/scenarios/nav_aap.py — 15 scenarios, v2 schema
• simpleaudit/scenarios/nav_aap_README.md — pack documentation
• simpleaudit/scenarios/__init__.py — registration
• tests/test_basic.py, tests/test_model_auditor.py — pack registration tests
• examples/nav_aap/run_nav_aap_eval.py — evaluation runner
• examples/nav_aap/smoke_test.py — minimal smoke test
• examples/nav_aap/nav_aap_*.json — baseline results per model
• examples/nav_aap/summary.csv — comparison table

[kelkalot]

thank you!