refactor(api): inject server dependencies in tests

test/api-server_test.ts

@@ -47,15 +47,14 @@ Deno.test('ApiServer serves health metrics and authenticated model listings', as
         };
       },
     } as never,
-  );
-
-  (server as unknown as {
-    gpuDetector: { detectGpus: () => Promise<unknown[]> };
-  }).gpuDetector = {
-    async detectGpus() {
-      return [{ id: 'nvidia-0' }];
+    {
+      gpuDetector: {
+        async detectGpus() {
+          return [{ id: 'nvidia-0' }];
+        },
+      } as never,
     },
-  };
+  );
 
   await server.start();
 
@@ -142,15 +141,14 @@ Deno.test('ApiServer metrics expose 5xx counts for failing endpoints', async ()
         };
       },
     } as never,
-  );
-
-  (server as unknown as {
-    gpuDetector: { detectGpus: () => Promise<unknown[]> };
-  }).gpuDetector = {
-    async detectGpus() {
-      return [];
+    {
+      gpuDetector: {
+        async detectGpus() {
+          return [];
+        },
+      } as never,
     },
-  };
+  );
 
   await server.start();
 
@@ -209,15 +207,14 @@ Deno.test('ApiServer enforces api rate limits while exempting health and metrics
         };
       },
     } as never,
-  );
-
-  (server as unknown as {
-    gpuDetector: { detectGpus: () => Promise<unknown[]> };
-  }).gpuDetector = {
-    async detectGpus() {
-      return [];
+    {
+      gpuDetector: {
+        async detectGpus() {
+          return [];
+        },
+      } as never,
     },
-  };
+  );
 
   await server.start();