fix(auth): use UUID id generation for BetterAuth DB models

apps/api/src/telemetry/telemetry.interceptor.spec.ts

@@ -50,6 +50,8 @@ describe("TelemetryInterceptor", () => {
         getResponse: vi.fn().mockReturnValue({
           statusCode: 200,
           setHeader: vi.fn(),
+          headersSent: false,
+          writableEnded: false,
         }),
       }),
       getClass: vi.fn().mockReturnValue({ name: "TestController" }),
@@ -101,6 +103,35 @@ describe("TelemetryInterceptor", () => {
       expect(mockResponse.setHeader).toHaveBeenCalledWith("x-trace-id", "test-trace-id");
     });
 
+    it("should not set trace header when response is already committed", async () => {
+      const committedResponseContext = {
+        ...mockContext,
+        switchToHttp: vi.fn().mockReturnValue({
+          getRequest: vi.fn().mockReturnValue({
+            method: "GET",
+            url: "/api/test",
+            path: "/api/test",
+          }),
+          getResponse: vi.fn().mockReturnValue({
+            statusCode: 200,
+            setHeader: vi.fn(),
+            headersSent: true,
+            writableEnded: true,
+          }),
+        }),
+      } as unknown as ExecutionContext;
+
+      mockHandler = {
+        handle: vi.fn().mockReturnValue(of({ data: "test" })),
+      } as unknown as CallHandler;
+
+      const committedResponse = committedResponseContext.switchToHttp().getResponse();
+
+      await lastValueFrom(interceptor.intercept(committedResponseContext, mockHandler));
+
+      expect(committedResponse.setHeader).not.toHaveBeenCalled();
+    });
+
     it("should record exception on error", async () => {
       const error = new Error("Test error");
       mockHandler = {

apps/api/src/telemetry/telemetry.interceptor.ts

@@ -88,7 +88,7 @@ export class TelemetryInterceptor implements NestInterceptor {
 
       // Add trace context to response headers for distributed tracing
       const spanContext = span.spanContext();
-      if (spanContext.traceId) {
+      if (spanContext.traceId && !response.headersSent && !response.writableEnded) {
         response.setHeader("x-trace-id", spanContext.traceId);
       }
     } catch (error) {