fix(ci): Resolve unit test failures and clean up package.json

- Fix `tests/nostr-login-permissions.test.mjs`: Refresh permission cache reference after login.
- Fix `tests/hashtag-preferences.test.mjs`: Update mock to correctly simulate permission state.
- Remove duplicate dependencies from `devDependencies` in `package.json`.
- Document telemetry script in `AGENTS.md`.

Co-authored-by: PR0M3TH3AN <[email protected]>

package.json

@@ -35,8 +35,6 @@
   "devDependencies": {
     "@noble/hashes": "^2.0.1",
     "@playwright/test": "^1.58.0",
-    "@tailwindcss/typography": "^0.5.15",
-    "autoprefixer": "^10.4.23",
     "cross-env": "^10.1.0",
     "esbuild": "^0.25.12",
     "fake-indexeddb": "^6.2.5",