[alco]

Summary

• Renames the microsecond-unit suffix used by several telemetry metric and span-attribute names from the non-ASCII µs/μs characters to plain-ASCII us, since backends such as Mimir/Prometheus reject metric names containing non-ASCII characters and were dropping these metrics on ingestion.
• Covers the shape DB connection pool checkout queue-time metric named directly in the issue, plus several interval/span-duration attribute names elsewhere in the sync-service that used the same non-ASCII suffix, for consistency.
• Adds coverage confirming the renamed metric is exported with a plain-ASCII name.

Fixes #4732

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.11%. Comparing base (7b9e9fe) to head (9b9cd9c).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4776       +/-   ##
===========================================
+ Coverage   43.29%   60.11%   +16.81%     
===========================================
  Files         314      409       +95     
  Lines       25624    44242    +18618     
  Branches     8705    12589     +3884     
===========================================
+ Hits        11094    26594    +15500     
- Misses      14449    17566     +3117     
- Partials       81       82        +1     

Flag	Coverage Δ
electric-telemetry	64.39% <ø> (?)
elixir	64.39% <ø> (?)
packages/agents	72.77% <ø> (ø)
packages/agents-mcp	77.70% <ø> (ø)
packages/agents-mobile	80.67% <ø> (ø)
packages/agents-runtime	83.73% <ø> (?)
packages/agents-server	75.67% <ø> (+0.02%)	⬆️
packages/agents-server-ui	8.32% <ø> (ø)
packages/electric-ax	51.06% <ø> (ø)
packages/experimental	87.73% <ø> (ø)
packages/react-hooks	86.48% <ø> (ø)
packages/start	82.83% <ø> (ø)
packages/typescript-client	91.84% <ø> (-0.12%)	⬇️
packages/y-electric	56.05% <ø> (ø)
typescript	60.06% <ø> (+16.76%)	⬆️
unit-tests	60.11% <ø> (+16.81%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

This PR has been released! 🚀

The following packages include changes from this PR:

• @core/sync-service@1.8.0

Thanks for contributing to Electric!