fix(orchestrator): add prisma generate to Dockerfile and reflect-metadata to vitest setup

Two CI fixes:
1. Orchestrator Dockerfile now copies apps/api/prisma schema and runs
   prisma generate before build. Fixes TS2305/TS2339 errors (PrismaClient
   and model properties not found) in docker-build-orchestrator step.
2. Add reflect-metadata to vitest setupFiles. Fixes class-transformer
   decorator error (Reflect.getMetadata is not a function) in DTO unit tests.

apps/orchestrator/vitest.config.ts

@@ -4,6 +4,7 @@ export default defineConfig({
   test: {
     globals: true,
     environment: "node",
+    setupFiles: ["reflect-metadata"],
     exclude: ["**/node_modules/**", "**/dist/**", "**/tests/integration/**"],
     include: ["src/**/*.spec.ts", "src/**/*.test.ts"],
     coverage: {