feat: price med-arb by phase, attest the conflicts undertaking, and answer the first real spam

Pouya's rulings of 2026-09-03 (the last two D20 findings) and 2026-09-04 (the
spam observation and four mitigations), in one change set.

D20 finding 10 — med-arb is billed BY PHASE, each phase at the rates already
published, so /fees/'s "Every figure is on this page" is true as written rather
than narrowed. FEES.medArb is the single source; docs/07 §Med-arb carries the
rule INTERIM against R5, and R5 now carries it back, because a derived price
moves silently when a rate moves.

D20 finding 13 — conduct undertaking (g), attested 2026-09-03, published as his
wording verbatim on /legal/privacy/ and /contact/. The clause that raised the
finding promised to DISCLOSE a conflicts check's outcome, which the attestation
does not cover; it is struck. D20 now partitions 17 fixed / 2 refuted / 1 owed.

Spam, 2026-09-04 — recorded in docs/05 §Observed abuse with the date and
signature. A second honeypot (a decoy checkbox, own class, `hidden`, a label
that tells a human not to tick it) and scoring that LABELS and never rejects:
nothing is dropped, nothing new is stored, and only the operator notification
changes. Q65 opens the WAF cost call.

The timing floor could not be built: there is no timing check and never has
been. docs/05 carries it struck, and every mechanism that would give a real
per-visitor clock breaks zero-JS, handler-and-form-only, or D1. Q66.

configure.mjs gains section 5 — a custom origin request policy forwarding
CloudFront-Viewer-Address on /api/*. Written, dry-run against the live
distribution, NOT applied. It reads the handler's own header reads and refuses
to run if the whitelist omits one.

And reading the live account to do it found four AGENTS.md §7 rows saying the
intake backend was undeployed, two days after it went live — corrected against
get-function-configuration, get-routes, get-stage, get-policy and the deployed
zip, which was downloaded and read.

Review: adversarial-reviewer only (claims-auditor is D20's cutover pass and has
run). Round 1 five lenses, 56 findings, 7 blocking, 4 refuted by an independent
refuter; round 2 four lenses, 36 findings, 33 of them defects in round 1's own
repairs. Stopped at two per D19.

Gates, exit status read for each: check 0 · build 0 (23 pages) · check:claims 0
· check:intake 0 · og:proof 0 · lint 0 · spam-score.test 39/39 with 6/6 mutations
killed · router.test 30/30 · minifier grep 1 (clean) · lighthouse 0, no category
below 95 · configure.mjs dry run 0, nothing written.

Nothing deployed and nothing applied.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Md3GndFqWPzK78xAoebsg5

eslint.config.js

@@ -100,4 +100,17 @@ export default [
       'no-console': 'off',
     },
   },
+
+  /* THE BACKEND TEST FILE ONLY — NOT `backend/intake/**`. `handler.mjs` runs in
+     Lambda, where `console.log` is a line in CloudWatch that nobody reads and
+     `console.warn`/`console.error` are the two that signal, so the rule stays on
+     for it deliberately. The test beside it is a CLI tool and prints its verdict,
+     exactly as `scripts/` and the router test do.
+
+     ⚠️ LAST, LIKE THE TWO ABOVE. Flat config applies matching blocks in order
+     and the last one wins. */
+  {
+    files: ['backend/**/*.test.mjs'],
+    rules: { 'no-console': 'off' },
+  },
 ];