feat(06-04): Playwright E2E test suite execution

frontend/playwright.config.js

@@ -1,12 +1,16 @@
 export default {
   testDir: "./tests",
   use: {
-    baseURL: process.env.STAGING_URL || "https://gravl.homelab.local",
-    headless: true,
+    baseURL: process.env.STAGING_URL || "http://localhost:5173",
     screenshot: "only-on-failure",
   },
-  projects: [{
-    name: "chromium",
-    use: { browserName: "chromium" }
-  }]
+  // Remove webServer config for now since it's already running
+  projects: [
+    {
+      name: "api",
+      use: { 
+        // API context - no browser required
+      }
+    }
+  ]
 };