probe: profile T5 default path on CI (temporary, never merged)

[JohnnyWilson16]

Description

Please include a summary of the changes and the related issue/feature description.

Fixes # (issue number if applicable)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor / Style / Performance improvement

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Type checks (mypy) and linter checks (ruff) pass locally

Summary by CodeRabbit

• Chores
  • Updated performance validation to continue reporting results without blocking the workflow when a benchmark gate fails.
  • Added profiling diagnostics for the default T5 cleaning process to help identify performance bottlenecks.
  • Improved visibility into cumulative processing time during performance checks.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: a448299d-cd75-4969-8404-c84255a82bdb

📥 Commits

Reviewing files that changed from the base of the PR and between 9368ea4 and eb859e4.

📒 Files selected for processing (1)

• .github/workflows/perf-regression.yml

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📝 Walkthrough

Walkthrough

Changes

Performance workflow

Layer / File(s)	Summary
T5 gate handling .github/workflows/perf-regression.yml	The T5 gate command tolerates non-zero exit status so detected regressions do not fail the workflow.
T5 profiling probe .github/workflows/perf-regression.yml	A probe warms up and profiles the default T5 cleaning flow, printing the top freshdata functions by cumulative time.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: johnnywilson-portfolio

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch probe/ci-profile-t5

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