chore: speed up tests and update opencode models

vitest.gateway.config.ts

@@ -1,15 +1,14 @@
-import { defineConfig, mergeConfig } from "vitest/config";
+import { defineConfig } from "vitest/config";
 import baseConfig from "./vitest.config.ts";
 
 const baseTest = (baseConfig as { test?: { exclude?: string[] } }).test ?? {};
 const exclude = baseTest.exclude ?? [];
 
-export default mergeConfig(
-  baseConfig,
-  defineConfig({
-    test: {
-      include: ["src/gateway/**/*.test.ts", "extensions/**/*.test.ts"],
-      exclude,
-    },
-  }),
-);
+export default defineConfig({
+  ...baseConfig,
+  test: {
+    ...baseTest,
+    include: ["src/gateway/**/*.test.ts"],
+    exclude,
+  },
+});