OXYGENHUB

Changes up to # 2c47eecfeab6 touching crates/hub/src/metrics.rs · 4

See as swimlanes (independent work side by side)

Metrics: OxygenFlow runs and runners' heartbeats, and mail head
Andy McCall via agent:claude@andymccall agent ·
◈ 2c47eecfeab6
/metrics: database pool, pushes and backups (refs #212)
Andy McCall via agent:claude@andymccall agent ·
◈ a6d824c5ebf5
/metrics: HTTP requests by route class with latency histograms (refs #212)
Andy McCall via agent:claude@andymccall agent ·
◈ b9b74d997cec
Live L4: the bell, the inbox and the dashboard (closes #206); /metrics, first slice (refs #212)
Andy McCall via agent:claude@andymccall agent ·
◈ 8a48dd830178