test(03-01): add failing tests for setup backend

- Add setups and setupItems tables to DB schema
- Add Zod schemas for setup create/update/sync
- Add Setup/SetupItem types to shared types
- Add setup tables to test helper
- Write service and route tests (RED - no implementation yet)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/shared/schemas.ts

@@ -48,3 +48,16 @@ export const updateCandidateSchema = createCandidateSchema.partial();
 export const resolveThreadSchema = z.object({
   candidateId: z.number().int().positive(),
 });
+
+// Setup schemas
+export const createSetupSchema = z.object({
+  name: z.string().min(1, "Setup name is required"),
+});
+
+export const updateSetupSchema = z.object({
+  name: z.string().min(1, "Setup name is required"),
+});
+
+export const syncSetupItemsSchema = z.object({
+  itemIds: z.array(z.number().int().positive()),
+});