feat(voice): adapt voice entry to the stacked-jobs prosthesis model

Authored by the /orchestrate builder agent, committed unrepaired so the
fixes that follow are reviewable against it.

Backend: replaces the flat prosthesisDefaultType/prosthesisOverrides wire
shape with a prosthesis: ProsthesisAssignment[] list whose targets can be a
tooth or a jaw; adds resolveAssignmentTarget / classifyTypeCode /
resolveProsthesisAssignment for leaf-vs-category classification, region
validity with mixed-region deferral, and assignmentIndex on unresolved
items; adds PROSTHESIS_CATEGORY and PROSTHESIS_SUBCATEGORY to
CatalogEntityKind with a migration and seeded fa/en/nl translations; and
rewrites the extraction prompt to render the catalog as a tree.

Frontend: merged "teeth and prosthesis" row, stack preview through the
existing applyLeafToJobs, three chip-fold paths, rewritten applyVoiceResult
and voiceForEditor, and the two carried-forward recording fixes — the
container fallback that refused Safari and the render gate that never
checked isMediaRecorderSupported().

Adds Vitest for the frontend's pure helpers, and updates CLAUDE.md.

Gate was green: backend 16 suites / 209 tests, nest build, prisma validate;
frontend 37 Vitest tests, tsc --noEmit, next build.

KNOWN DEFECTS, fixed in the commits that follow:
- VoiceReviewSheet.tsx:169 — a picked tooth chip is dropped on Apply
- VoiceReviewSheet.tsx:213 / TreatmentWorkspace.tsx:2215 — decision 41's
  type-row lock is missing, so unticking it saves prosthesis lab rows on a
  non-prosthesis detail

Reviewed on the correctness lens only; regression-risk never ran. The
migration was validated but never applied.

Spec: docs/specs/voice-treatment-entry/spec.md
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

backend/src/modules/voice/openrouter.provider.spec.ts

@@ -12,7 +12,18 @@ const CONFIG = {
 
 const CATALOG = {
   treatmentTypes: [{ code: 'prosthesis', label: 'پروتز' }],
-  prosthesisTypes: [{ code: 'pfm_crown', label: 'روکش پی‌اف‌ام' }],
+  prosthesisTypes: [
+    {
+      code: 'pfm_crown',
+      label: 'روکش پی‌اف‌ام',
+      category: 'crown',
+      subcategory: '',
+      chartRegion: 'crown',
+      stackGroup: 'restoration',
+    },
+  ],
+  prosthesisCategories: [{ code: 'crown', label: 'روکش‌ها' }],
+  prosthesisSubcategories: [],
   labs: [{ id: 'lab-1', name: 'لابراتوار سینا' }],
 };
 
@@ -111,8 +122,21 @@ describe('OpenRouterExtractionProvider', () => {
     ],
     connectedSpans: [],
     comment: null,
-    prosthesisDefaultType: 'pfm_crown',
-    prosthesisOverrides: [],
+    prosthesis: [
+      {
+        targets: [
+          {
+            spoken: 'یک چهار',
+            fdi: '14',
+            arch: null,
+            side: null,
+            position: null,
+          },
+        ],
+        types: ['pfm_crown'],
+        spoken: 'روکش پی‌اف‌ام روی ۱۴',
+      },
+    ],
     labId: 'lab-1',
     labMatchExact: true,
     due: {