Small cleanup PR to close three CodeQL alerts, without changing app behavior. - [#18](https://github.com/MagicMirrorOrg/MagicMirror/security/code-scanning/18) in `js/loader.js` - [#19](https://github.com/MagicMirrorOrg/MagicMirror/security/code-scanning/19) in `js/socketclient.js` - [#20](https://github.com/MagicMirrorOrg/MagicMirror/security/code-scanning/20) in `tests/electron/modules/calendar_spec.js` For `Loader` and `MMSocket`, make the global export explicit via `globalThis` (instead of suppressing `no-unused-vars`). For calendar tests, remove the unused debug helper `logAllText`. Also includes a tiny e2e cleanup: `MM_PORT` is cleared in `afterAll`. Outcome: Three open CodeQL alerts are addressed with small, low-risk changes. The global intent for `Loader` and `MMSocket` is explicit, dead test helper code is removed, and e2e test state is cleaned up more reliably between runs. With this, all current [code scanning issues](https://github.com/MagicMirrorOrg/MagicMirror/security/code-scanning) should be resolved in the develop branch 🎈

Day of the week repeated twice #18

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