- prometheus.ts: new Prometheus client with 7d/30d range queries for disk,
memory, swap, CPU steal, and disk I/O (GB/hr); getWeeklyDigestData()
aggregates all metrics for digest and API endpoint
- routes.ts: GET /api/vm/metrics/trend?metric=…&range=… and
GET /api/vm/weekly-digest endpoints
- api.ts: TrendPoint/TrendSeries types; getTrend() and getMemoryTrend()
added to vmApi
- vm/page.tsx: Sparkline (pure SVG polyline+fill), TrendCard with
latest/avg/peak and threshold colouring, TrendsPanel with lazy load
on first open; Promise.allSettled() isolation for all 5 data panels
- vm-weekly-digest.sh: weekly Telegram digest via docker exec into
devops-backend to reach Prometheus; emoji severity indicators; cron
summary from /var/log/vm-cleanup.log
- systemd timer: Mon 08:00 UTC, Persistent=true (fires on next boot
if missed); first trigger 2026-06-02
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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