24h of snapshots were already being retained but never read. Adds a
windowed query (last ~40 samples/host, one query total via
ROW_NUMBER() OVER PARTITION BY, not N+1) embedded in the existing
/api/hosts response, rendered as small hand-rolled SVG sparklines
(cpu/mem/disk overlaid) -- no charting library needed at this scale.
Closes#10.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
jhodgkin
f3ee4c2424