Redesign the Active Downloads UI with four improvements:
- Rich progress: BullMQ jobs now report downloadedBytes/totalBytes instead
of just a percentage, showing "2.3 GB / 5.1 GB" instead of "78% / 100%"
- Friendly names: dispatch title metadata from curated categories, Content
Explorer library, Wikipedia selector, and map collections
- Cancel button: Redis-based cross-process abort signal lets users cancel
active downloads with file cleanup. Confirmation step prevents accidents.
- Live status indicator: green pulsing dot with transfer speed for active
downloads, orange stall warning after 60s of no data, gray dot for queued
Backward compatible with in-flight jobs that have integer-only progress.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When Ollama isn't installed, every ZIM download dispatches embedding jobs
that fail and retry 30x with 60s backoff. With many ZIM files downloading
in parallel, this exhausts Redis connections with EPIPE/ECONNRESET errors.
Two changes:
1. Don't dispatch embedding jobs when Ollama isn't installed (belt)
2. Use BullMQ UnrecoverableError for "not installed" so jobs fail
immediately without retrying (suspenders)
Closes#351
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
