refactor(ms-ai-architect): R14 — persona ut av plugin-flaten, og de seks stedene som produserte den

Nøytral arkitekt-ramme (ratifisert 15.09) i SKILL.md-ene, 23 kommandoer, 70 redaksjonelle
forekomster i ref-korpuset, README/CLAUDE.md/NOTICE og A11Y-rapportens proveniens-linje.
Hver av de 70 avgjort i kontekst: dialog fikk ny taler, proveniens ny opphavspåstand.

Ordren navnga fem produsent-steder; den live sjette manglet. `PROMPT_TEMPLATE` settes i
generate-skills.sh:27 og leses ALDRI — prompten er en heredoc i samme script. Å rette bare
prompt-template.md ville latt generatoren re-minte personaen ved neste KB-kjøring.

Ny G4-klausul i check-cosmo-gate.mjs: persona i leveranseflaten = 0, derivasjonsregisteret
pinnet per fil PÅ TALL (et filnavn-unntak er blindt for hva fila senere inneholder).
Registeret utvidet med README.md 3 — versjonstabellens rader er historikk, ikke leveranse.
Den ene genitiv-formede produktlinja adjudiseres på cosmos-db-URL-en i samme rad; regelen
er målt lukket (8 tvetydige linjer totalt, 33 URL-linjer, 2 persona-klassifiserte, begge
produkt) og hvitvasker ikke bar `Cosmo`. classifyCosmo urørt — baselinene hviler på den.
R3 godtar nå R14-utført (0) men ingenting imellom: et halvveis sveip felles fortsatt.

Bevis: gate PASSED + NETTET VALIDERT BEGGE VEIER · 1137/1137 · validate-plugin 250/0/0 ·
begge --dry-drivere 0 · Layer B 45/45 OK (kjent-positiv feller, exit 1).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

scripts/kb-update/lib/cosmo-persona.mjs

@@ -519,3 +519,78 @@ export function neutralizeLabels(content, { relPath = '' } = {}) {
   });
   return { content: out.join('\n'), changes };
 }
+
+// ================================ R14: the delivery surface ================================
+//
+// R13 emptied the reference corpus's headings, R13b its mechanical labels and cells. R14 is
+// the rest of the plugin: SKILL.md files, 23 commands, the 70 editorial occurrences, and the
+// six sites that PRODUCE new persona on every KB generation. What stays behind is the
+// DERIVATION REGISTER below — statements that are true about the past.
+//
+// WHY A SEPARATE COUNTER AND NOT classifyCosmo. One line outside the corpus defeats the R13
+// classifier: `docs/ref-kb-gold-reconciliation-2026-06.md:93` reads "Cosmos multi-region
+// writes (active-active)", which the Norwegian-genitive rule scores as persona because
+// PRODUCT_FOLLOWERS was enumerated over a corpus that contains no English product prose.
+// The verdict was settled by the `/azure/cosmos-db/` URL in the same table row, so that is
+// the discriminator applied here — a rule, not a filename exemption.
+//
+// The rule is CLOSED, not open-ended. Measured over all tracked `*.md` on 2026-09-15: only 8
+// lines have the ambiguous `Cosmos <lowercase>` shape at all, and only 33 lines carry a
+// cosmos-db URL; of those 33, exactly 2 classify as persona and BOTH are genuinely the
+// product. It is also not a laundering channel: the URL only excuses the GENITIVE shape, so a
+// bare `Cosmo` on a line that happens to cite cosmos-db still counts as persona.
+//
+// classifyCosmo itself is deliberately NOT changed: the G1/G3/R1/R3 baselines are measured
+// with it, and moving a classifier under a committed baseline is how a gate stops proving
+// anything.
+
+/**
+ * Persona occurrences in DELIVERY content — classifyCosmo plus the adjudicated product rule.
+ * @param {string} content
+ * @returns {number}
+ */
+export function personaInDeliveryContent(content) {
+  let n = 0;
+  for (const line of String(content ?? '').split('\n')) {
+    const citesProduct = /cosmos-db|cosmosdb/i.test(line);
+    for (const m of line.matchAll(/cosmo/gi)) {
+      const rest = line.slice(m.index);
+      if (!isPersonaOccurrence(rest)) continue;
+      // Only the genitive shape is excused by the URL. A bare `Cosmo` is the persona
+      // whatever else the line cites.
+      if (citesProduct && /^Cosmos[ \t]/.test(rest)) continue;
+      n++;
+    }
+  }
+  return n;
+}
+
+/**
+ * The derivation register: files whose persona mentions are TRUE statements about the past
+ * and must survive R14. Two classes — history (CHANGELOG and the README version table, which
+ * CLAUDE.md forbids rewriting: v1.0.0 really did ship the persona, and v1.16.5 really did
+ * remove `For Cosmo` from two files) and derivation records (the plans, briefs and the
+ * measurement document that record why the decisions were taken).
+ *
+ * PINNED ON COUNTS, NEVER ON FILENAMES. A filename exemption is blind to what the file later
+ * comes to contain; a count moves the moment a new persona line is added, so it still fells
+ * the gate. The set is closed under its own documentation: the measurement document counts
+ * itself, which is why the register can be committed at all.
+ *
+ * Counts measured 2026-09-15 with personaInDeliveryContent — the same function G4 uses, so
+ * the register's population matches the field it is subtracted from.
+ */
+export const DERIVATION_REGISTER = {
+  'CHANGELOG.md': 6,
+  'README.md': 3,
+  'docs/cosmo-removal-brief-2026-06.md': 32,
+  'docs/devils-advocate-audit-2026-06-18.md': 1,
+  'docs/kb-mechanism-redesign-brief.md': 1,
+  'docs/kb-refresh-backlog-2026-06.md': 3,
+  'docs/r14-persona-gate-measurement-2026-09.md': 32,
+  'docs/ref-kb-correctness-program-2026-06.md': 4,
+  'docs/ref-kb-direction-note-2026-06.md': 6,
+  'docs/ref-kb-workflow-plan-2026-06.md': 25,
+  'docs/skill-validation-routine-brief-2026-07.md': 2,
+  'docs/spor1-authority-selection.md': 3,
+};