feat(ms-ai-architect): Spor D steg 2 — score-skill CLI (--json/--gate/--skill) (TDD)

Byggekloss for både SessionStart-surfacing og lifecycle-gate (D3).

- eval.mjs: ekstraher buildReport() (eksportert, testbar) ut av main() —
  samler hele korpus-rapporten (deterministisk + K10 + merget judge-cache).
- lib/skill-score.mjs: formatScoreReport() (ren) — sortert forbedringsrapport
  med score, status, floored/provisional/ujudget-tags og ⚑gulv-markering.
- score-skill.mjs (NY CLI): buildReport → scoreReport → render/json/gate.
  --skill scorer hele korpuset (K10 trenger alle søsken) men rapporterer/gater
  kun den valgte → inkrementell enkelt-skill-scoring for D3 lifecycle-gate.
- docs/development.md: ny «Skill-kvalitetsscore (Spor D)»-seksjon.

Live baseline: advisor 91, governance/security 96 (OK); engineering +
infrastructure 89 (floored av K10-gulv) UNDER mål. Gate exit=1.

Tester: kb-eval 134→142 (+8). validate 239, kb-update 316 uendret grønt.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

scripts/kb-eval/lib/skill-score.mjs

@@ -249,3 +249,35 @@ export function scoreReport(report, opts = {}) {
   const below = scored.filter((s) => !s.meetsTarget);
   return { target, scored, below };
 }
+
+/**
+ * Render a human-readable quality report (pure). Each skill shows its score and
+ * status; below-target skills list their sorted improvements (biggest weighted
+ * loss first). Returns a multi-line string.
+ * @param {{target: number, scored: object[]}} result  scoreReport() output
+ */
+export function formatScoreReport(result) {
+  const target = result?.target ?? TARGET;
+  const scored = result?.scored || [];
+  const below = scored.filter((s) => !s.meetsTarget);
+  const lines = [];
+  lines.push(`Skill-kvalitet — ${scored.length} skills, mål ≥${target} %  (${below.length} under mål)`);
+  lines.push('');
+  for (const s of scored) {
+    const tags = [];
+    if (s.floored) tags.push('floored');
+    if (s.provisional) tags.push('provisional');
+    if (!s.judged) tags.push('ujudget');
+    const status = s.meetsTarget ? 'OK' : 'UNDER MÅL';
+    const tagStr = tags.length ? ` [${tags.join(', ')}]` : '';
+    lines.push(`■ ${s.name}  ${s.score}/100  ${status}${tagStr}`);
+    if (!s.meetsTarget) {
+      for (const imp of s.improvements) {
+        const floor = imp.floor ? ' ⚑gulv' : '';
+        lines.push(`   ↳ ${imp.key} ${imp.label}${floor} (${imp.detail}) [-${imp.pointsLost.toFixed(2)}] → ${imp.fix}`);
+      }
+    }
+    lines.push('');
+  }
+  return lines.join('\n');
+}