More strict email address parsing (to match nodemailer) - #914

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

React Hook useEffect has missing dependencies: 'activeStudyIndex', 'setActiveStudyIndex', 'setStudies', and 'studies.length'. Either include them or remove the dependency array

Unexpected any. Specify a different type

Unexpected any. Specify a different type

Unexpected any. Specify a different type

Unexpected any. Specify a different type

React Hook useEffect has a missing dependency: 'invalid'. Either include it or remove the dependency array

React Hook useEffect has a missing dependency: 'studyId'. Either include it or remove the dependency array

Unexpected any. Specify a different type

React Hook useMemo has an unnecessary dependency: 'duoEntries'. Either exclude it or remove the dependency array. Outer scope values like 'duoEntries' aren't valid dependencies because mutating them doesn't re-render the component