Mirror the design-doc update in the actual download progress component
so the GUI matches the trimmed chip. Previously the large progress
panel rendered `[icon] from N peer(s)` inline; now it renders just
`[icon] N`, with the full "Downloading from N peers on the LAN"
sentence retained as the `title` tooltip for discoverability.
Changes:
- `DownloadProgress.tsx` (lg variant): drop the "from" / unit text from
the inline span, keeping only the count. `peerUnit` stays in scope
because the tooltip still needs singular/plural.
- `launcher.css`: collapse `.dl-peers` and `.dl-peers strong` into a
single rule that puts the t-1 colour, 600 weight and tabular-nums
directly on the chip (the inner `<strong>` no longer exists). Gap
drops from 5px to 4px to match the tighter icon+number layout.
- Container queries: peers drops at <=240px and ETA drops at <=320px,
matching the new thresholds in the design reference. The narrower
chip simply fits in smaller modals, so the old 300/380 cutoffs were
hiding stats that would have rendered fine.
Test Plan
- `just frontend-test` (passes)
- `just run`, start a download, confirm the chip reads `[icon] N`,
hover shows the tooltip, and narrowing the window collapses ETA
before peers at the new breakpoints.