feat: build step 4 — /mediation/, /arbitration/, /med-arb/; source ADRIC's rules

Three pages, five in the build, zero JavaScript. /arbitration/ carries §4's
paired-disclosure condition on four surfaces and Q39's struck universal appears
in no form. /med-arb/ meets the procedural-fairness objection at the level of
process design and ships deliberately without Pouya's own protocol commitments,
which are Q54.

docs/01 directed the mediation page to name the "ADRIC Model Mediation Rules".
No such document exists — 0 occurrences across all four of ADRIC's rules pages
against 10 for "National Mediation Rules"; "Model" belongs to the Model Dispute
Resolution Clause inside the rules. Caught only because R14 requires the source
before the claim. docs/reference/adric-rules.md + adric-extract/ carry it, with
the digest drift measured rather than assumed: the HTML changes per request, the
text extracts are byte-stable, so the extracts are the artefact.

Four review passes, 21 defects, and the pattern was mine: I wrote the Q54 gate
into the page and then breached it four times, then round 2 found two survivors
of round 1's own fixes and one defect round 1's fix created. Also removed a
<title> naming a practised role §4 does not grant, a habitual presupposing awards
issued, and a claim about what ADRIC's rules permit that my own reference doc
says is unsupported.

Two instrument failures caught before they became conclusions: touch targets
measured over file:// with no CSS loaded (uniform 18px, including on a .btn with
a 44px floor), and a schema.org validator call that parsed nothing and returned
0 warnings for everything. Both re-run with the instrument validated first.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0148NztQskLKKApP5SzAA78e

docs/03-content-spec.md

@@ -384,7 +384,14 @@ Drafted by Claude, **every word reviewed by Pouya before publication**:
 
 - [ ] Every factual claim appears in `AGENTS.md` §4 Verified
 - [ ] No matter counts, settlement rates, dollar figures, or time-to-award stats
-- [ ] No testimonials, endorsements, or third-party quotes
+- [ ] No testimonials, endorsements, or third-party quotes **about the practice
+      or about Pouya**. Scope matters: `docs/01` §`/med-arb/` **directs** the page
+      to quote ADRIC's own framing of med-arb, and `/mediation/` and
+      `/arbitration/` name published rule sets. Quoting an institution about
+      **its own rules**, from a committed source, is not an endorsement — and an
+      unscoped version of this line flags the copy the spec requires. Same shape
+      as the "legal advice" item corrected on 2026-08-28, in the file that gets
+      grepped. **Keep the source's superlatives inside the quotation marks**
 - [ ] No superlatives and no guarantee language
 - [ ] No claim or implication of legal licensure anywhere (D13)
 - [ ] Q.Arb described as commenced August 2026, never as held or nearly complete