chore(ai): bump prettier to 3.8.1 and perform dependency scan

- Perform `npm audit` and `npm outdated` (artifacts included).
- Update `prettier` to 3.8.1 (safe devDependency upgrade).
- Remove accidentally committed/leftover session file `js/ui/dm/jules_session_4520373547615093905.zip` which caused lint errors.
- Pre-existing lint error in `js/ui/components/VideoCard.js` and test failure in `tests/app/moderation-overrides.test.mjs` were identified and verified as unrelated.

artifacts/npm-outdated.json

@@ -27,6 +27,13 @@
     "dependent": "app",
     "location": "/app/node_modules/pixelmatch"
   },
+  "prettier": {
+    "current": "3.8.0",
+    "wanted": "3.8.1",
+    "latest": "3.8.1",
+    "dependent": "app",
+    "location": "/app/node_modules/prettier"
+  },
   "prettier-plugin-tailwindcss": {
     "current": "0.6.14",
     "wanted": "0.6.14",