fix: use user CPU time for process_cpu_seconds_user_total on Windows

[cubic-dev-ai]

Summary

• Fixed process_cpu_seconds_user_total on Windows reporting system CPU time (stimeSeconds) instead of user CPU time (utimeSeconds)
• This made the user and system CPU metrics identical, breaking the user/system CPU breakdown in monitoring dashboards

Root Cause

Copy-paste error in process_metrics_windows.go:60 — the third WriteCounterFloat64 call used stimeSeconds where it should have used utimeSeconds. The Linux implementation (process_metrics_linux.go:89) correctly uses utime.

Test plan

• go test ./... passes
• go vet ./... clean
• GOOS=windows go vet ./... clean

🤖 Generated with Claude Code

---

Summary by cubic

Fixes process_cpu_seconds_user_total on Windows to report user CPU time instead of system time. Restores correct user/system CPU breakdown in dashboards.

• Bug Fixes
  • Corrected process_metrics_windows.go to use utimeSeconds for process_cpu_seconds_user_total (was incorrectly using stimeSeconds).

^{Written for commit 6bea0d2. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 1 file

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.14%. Comparing base (5dbd3cd) to head (6bea0d2).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #124   +/-   ##
=======================================
  Coverage   88.14%   88.14%           
=======================================
  Files          12       12           
  Lines        1392     1392           
=======================================
  Hits         1227     1227           
  Misses        114      114           
  Partials       51       51           

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[f41gh7]

LGTM