chore: ignore playwright artifacts in biome and fix minor devfront imports

adminfront/biome.json

@@ -19,6 +19,12 @@
     "enabled": true
   },
   "files": {
-    "ignore": ["dist", "node_modules", "tsconfig*.json"]
+    "ignore": [
+      "dist",
+      "node_modules",
+      "tsconfig*.json",
+      "test-results",
+      "playwright-report"
+    ]
   }
 }