chore(test): configure Vivaldi Playwright runner

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

playwright.config.ts

@@ -29,8 +29,24 @@ export default defineConfig({
   },
   projects: [
     {
-      name: "chromium",
-      use: { ...devices["Desktop Chrome"] },
+      name: "vivaldi",
+      use: {
+        ...devices["Desktop Chrome"],
+        launchOptions: {
+          executablePath: "/usr/bin/vivaldi",
+          args: [
+            "--headless=new",
+            "--no-sandbox",
+            "--disable-gpu",
+            "--disable-dev-shm-usage",
+            "--no-first-run",
+            "--noerrdialogs",
+            "--ozone-platform=headless",
+            "--ozone-override-screen-size=1280,720",
+            "--use-angle=swiftshader-webgl",
+          ],
+        },
+      },
     },
   ],
   webServer: {