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fix(metrics): engine metrics from PROMETHEUS_MULTIPROC_DIR + graceful bind - #1075

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ConnorLi96 wants to merge 9 commits into

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connorli/engine-metrics

Commits on Apr 14, 2026
- read engine metrics from PROMETHEUS_MULTIPROC_DIR in grpc mode
  
  Scott Lee
  authored and
  ConnorLi96
  committed
  504a855
- lint and format
  
  Scott Lee
  authored and
  ConnorLi96
  committed
  b33cf56
- fix(metrics): guard against empty prometheus multiproc metrics output
  ConnorLi96
  committed
  2b96a90
- fix(metrics): graceful metrics server bind failure
  ConnorLi96
  committed
  ad01bcf
- feat(metrics): merge engine metrics into :29000/metrics endpoint
  ConnorLi96
  committed
  63eff15
Commits on Apr 15, 2026
- feat(observability): add worker selection and backend response INFO logs
  ConnorLi96
  committed
  f4d1ecb
Commits on Apr 20, 2026
- fix(metrics): merge sglang engine metrics via HTTP scrape of gRPC workers
  ConnorLi96
  committed
  0f93a4c
Commits on Apr 22, 2026
- fix(metrics): preserve colons in sglang metric names on merged /metrics endpoint
  ConnorLi96
  committed
  3f6eec0
- style: fix nightly rustfmt formatting in health.rs and manager.rs
  ConnorLi96
  committed
  9a9b6e0