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/voice.service.ts

@@ -138,8 +138,12 @@ export class VoiceService {
         todayIso,
         weekStartJs: weekStartForLocale(catalogLocale),
         treatmentTypeCodes: new Set(catalog.treatmentTypes.map((t) => t.code)),
-        prosthesisTypeCodes: new Set(
-          catalog.prosthesisTypes.map((t) => t.code),
+        prosthesisLeaves: catalog.prosthesisTypes,
+        prosthesisCategoryCodes: new Set(
+          catalog.prosthesisCategories.map((c) => c.code),
+        ),
+        prosthesisSubcategoryCodes: new Set(
+          catalog.prosthesisSubcategories.map((c) => c.code),
         ),
         linkedLabIds: new Set(catalog.labs.map((l) => l.id)),
       });
@@ -244,9 +248,17 @@ export class VoiceService {
     organizationId: string,
     locale: string,
   ): Promise<ExtractionCatalog> {
-    const [treatmentTypes, prosthesisTypes, labs] = await Promise.all([
+    const [
+      treatmentTypes,
+      prosthesisTypes,
+      prosthesisCategories,
+      prosthesisSubcategories,
+      labs,
+    ] = await Promise.all([
       this.treatmentCatalog.list(locale, null),
       this.prosthesisCatalog.list(locale),
+      this.prosthesisCatalog.listCategories(locale),
+      this.prosthesisCatalog.listSubcategories(locale),
       this.listLinkedLabs(organizationId),
     ]);
 
@@ -254,10 +266,11 @@ export class VoiceService {
       treatmentTypes: treatmentTypes
         .filter((entry) => entry.availableInTreatment)
         .map((entry) => ({ code: entry.code, label: entry.label })),
-      prosthesisTypes: prosthesisTypes.map((entry) => ({
-        code: entry.code,
-        label: entry.label,
-      })),
+      // `buildCatalog` used to throw away category/subcategory/chartRegion/stackGroup here —
+      // the prompt now presents the catalog as the tree it is (§5).
+      prosthesisTypes,
+      prosthesisCategories,
+      prosthesisSubcategories,
       labs,
     };
   }
@@ -333,7 +346,7 @@ export class VoiceService {
           treatmentType: resolved.treatmentType != null,
           teeth: resolved.teeth.length,
           comment: resolved.comment != null,
-          prosthesisComplete: resolved.prosthesis?.complete ?? null,
+          prosthesisAssignments: resolved.prosthesisAssignments.length,
           lab: resolved.labId != null,
           dueDate: resolved.dueDate != null,
         },