chore(cli): [DO NOT MERGE] [#1217] trace instrumentation

[sai-ray]

Instrumentation-only branch for #1217. Adds [#1217-trace] log lines and a 5s active-handle heartbeat to identify the leaked handle. Do not merge.

Refs: #1217

Checklist

• This change contains a major version upgrade for a dependency and I confirm all breaking changes are addressed
  • Release notes for the new version:

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.27%. Comparing base (a90d578) to head (b114245).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1594      +/-   ##
==========================================
+ Coverage   88.19%   88.27%   +0.08%     
==========================================
  Files          76       76              
  Lines       10864    10923      +59     
  Branches     1503     1504       +1     
==========================================
+ Hits         9581     9642      +61     
+ Misses       1255     1253       -2     
  Partials       28       28              

Flag	Coverage Δ
suite.unit	88.27% <100.00%> (+0.08%)	⬆️

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