- Add i18next, react-i18next, i18next-browser-languagedetector packages
- Configure i18n initialization with language detector in lib/i18n.ts
- Created en/de translation files and moved most hard-coded strings into the files and translated them
- Uses locale-aware date formatting where applicable
- Added language-specific Wikipedia content files (wikipedia.en.json, wikipedia.de.json) and updated download URLs
- Added NOMAD_REPO_URL env variable for fork-friendly URL resolution (easier testing and rollout independent of Crosstalk repo)
Three bugs caused downloads to hang, disappear, or leave stuck spinners:
1. Wikipedia downloads that failed never updated the DB status from 'downloading',
leaving the spinner stuck forever. Now the worker's failed handler marks them as failed.
2. No stall detection on streaming downloads - if data stopped flowing mid-download,
the job hung indefinitely. Added a 5-minute stall timer that triggers retry.
3. Failed jobs were invisible to users since only waiting/active/delayed states were
queried. Now failed jobs appear with error indicators in the download list.
Closes#364, closes#216
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
