fix: make behaviour evaluation authoritative

Core fix: For cases with expectedBehaviours, reasoningQuality.status is now
set exclusively from behaviour evaluation results (required behaviour pass/fail).
Legacy concept checks remain visible as diagnostic-only metrics and do not
influence the authoritative result.

Key changes:
- Behaviour-based scoring determines reasoning status (passed/failed)
  instead of legacy concept literal matching
- Schema failure correctly forces not_evaluated (no vacuous truth)
- Saved live results re-evaluator preserves provenance metadata
- Classification tolerance map works bidirectionally for interchangeable types
- normalise() treats underscores as word characters, hyphens as spaces

Tests: 74 passing across both evaluator test suites
- tests/evaluator-behaviour-authoritative.test.mjs (47 tests, new)
- tests/evaluator-semantic.test.mjs (27 tests)

components/scenario-form.jsx

@@ -48,7 +48,8 @@ export default function ScenarioForm() {
   const hasReconstruction = result?.reconstruction;
   const hasNextQuestion = result?.nextQuestion;
   const hasEvidence = result?.evidence && result.evidence.length > 0;
-  const hasMeaningfulContent = hasClassification || hasReconstruction || hasNextQuestion || hasEvidence;
+  const hasMeaningfulContent =
+    hasClassification || hasReconstruction || hasNextQuestion || hasEvidence;
 
   return (
     <div className="space-y-6">
@@ -62,7 +63,9 @@ export default function ScenarioForm() {
           className="w-full rounded-lg border border-gray-300 px-4 py-3 text-sm focus:border-gray-500 focus:outline-none focus:ring-2 focus:ring-gray-400"
         />
         <div className="flex items-center justify-between">
-          <span className="text-xs text-gray-400">{scenario.length}/{MAX_LENGTH}</span>
+          <span className="text-xs text-gray-400">
+            {scenario.length}/{MAX_LENGTH}
+          </span>
           <button
             type="submit"
             disabled={status === "loading" || !scenario.trim()}
@@ -84,7 +87,8 @@ export default function ScenarioForm() {
           {/* Show partial content even on validation failure */}
           {(hasClassification || hasReconstruction) && (
             <div className="rounded-lg border border-yellow-300 bg-yellow-50 px-4 py-2 text-sm text-yellow-800">
-              ⚠ Partial result — some fields failed validation. Showing what was accepted.
+              ⚠ Partial result — some fields failed validation. Showing what was
+              accepted.
             </div>
           )}
           {hasReconstruction && (
@@ -106,13 +110,17 @@ export default function ScenarioForm() {
       )}
 
       {status === "loading" && (
-        <div className="py-12 text-center text-sm text-gray-400">Waiting for model response...</div>
+        <div className="py-12 text-center text-sm text-gray-400">
+          Waiting for model response...
+        </div>
       )}
 
       {/* Empty state */}
       {status === "idle" && (
         <div className="rounded-lg border border-dashed border-gray-300 bg-gray-50 px-6 py-8 text-center">
-          <p className="text-sm text-gray-400">Enter a scenario above and click Analyse to begin.</p>
+          <p className="text-sm text-gray-400">
+            Enter a scenario above and click Analyse to begin.
+          </p>
         </div>
       )}