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425507d15a
* fix(brief): category-gated context + RELEVANCE RULE to stop formulaic grounding
Shadow-diff of 15 v2 pairs (2026-04-22) showed the analyst pattern-
matching the loudest context numbers — VIX 19.50, top forecast
probability, MidEast FX stress 77 — into every story regardless of
editorial fit. A Rwanda humanitarian story about refugees cited VIX;
an aviation story cited a forecast probability.
Root cause: every story got the same 6-bundle context block, so the
LLM had markets / forecasts / macro in-hand and the "cite a specific
fact" instruction did the rest.
Two-layer fix:
1. STRUCTURAL — sectionsForCategory() maps the story's category to
an editorially-relevant subset of bundles. Humanitarian stories
don't see marketData / forecasts / macroSignals; diplomacy gets
riskScores only; market/energy gets markets+forecasts but drops
riskScores. The model physically cannot cite what it wasn't
given. Unknown categories fall back to all six (backcompat).
2. PROMPT — WHY_MATTERS_ANALYST_SYSTEM_V2 adds a RELEVANCE RULE
that explicitly permits grounding in headline/description
actors when no context fact is a clean fit, and bans dragging
off-topic market metrics into humanitarian/aviation/diplomacy
stories. The prompt footer (inline, per-call) restates the
same guardrail — models follow inline instructions more
reliably than system-prompt constraints on longer outputs.
Cache keys bumped to invalidate the formulaic v5 output: endpoint
v5 to v6, shadow v3 to v4. Adds 11 unit tests pinning the 5
policies + default fallback + humanitarian structural guarantee +
market policy does-see-markets + guardrail footer presence.
Observability: endpoint now logs policyLabel per call so operators
can confirm in Vercel logs that humanitarian/aviation stories are
NOT seeing marketData without dumping the full prompt.
* test(brief): address greptile P2 — sync MAX_BODY_BYTES + add parseWhyMattersV2 coverage
Greptile PR #3281 review raised two P2 test-quality issues:
1. Test-side MAX_BODY_BYTES mirror was still 4096 — the endpoint
was bumped to 8192 in PR #3269 (v2 output + description). With
the stale constant, a payload in the 4097–8192 range was
accepted by the real endpoint but looked oversize in the test
mirror, letting the body-cap invariant silently drift. Fixed
by syncing to 8192 + bumping the bloated fixture to 10_000
bytes so a future endpoint-cap bump doesn't silently
re-invalidate the assertion.
2. parseWhyMattersV2 (the only output-validation gate on the
analyst path) had no dedicated unit tests. Adds 11 targeted
cases covering: valid 2 and 3 sentence output, 100/500 char
bounds (incl. boundary assertions), all 6 banned preamble
phrases, section-label leaks (SITUATION/ANALYSIS/Watch),
markdown leakage (#, -, *, 1.), stub echo rejection, smart/
plain quote stripping, non-string defensive branch, and
whitespace-only strings.
Suite size: 50 to 61 tests, all green.
* fix(brief): add aviation policy to sectionsForCategory (PR #3281 review P1)
Reviewer caught that aviation was named in WHY_MATTERS_ANALYST_SYSTEM_V2's
RELEVANCE RULE as a category banned from off-topic market metrics, but
had no matching regex entry in CATEGORY_SECTION_POLICY. So 'Aviation
Incident' / 'Airspace Closure' / 'Plane Crash' / 'Drone Incursion' all
fell through to DEFAULT_SECTIONS and still got all 6 bundles including
marketData, forecasts, and macroSignals — exactly the VIX / forecast
probability pattern the PR claimed to structurally prevent.
Reproduced on HEAD before fix:
Aviation Incident -> default
Airspace Closure -> default
Plane Crash -> default
...etc.
Fix:
1. Adds aviation policy (same 3 bundles as humanitarian/diplomacy/
tech: worldBrief, countryBrief, riskScores).
2. Adds dedicated aviation-gating test with 6 category variants.
3. Adds meta-invariant test: every category named in the system
prompt's RELEVANCE RULE MUST have a structural policy entry,
asserting policyLabel !== 'default'. If someone adds a new
category name to the prompt in the future, this test fires
until they wire up a regex — prevents soft-guard drift.
4. Removes 'Aviation Incident' from the default-fall-through test
list (it now correctly matches aviation).
No cache bump needed — v6 was published to the feature branch only a
few minutes ago, no production entries have been written yet.