[Copilot]

The scheduled Duplicate Code Detector workflow was failing before analysis with a Copilot engine HTTP 400 Bad Request, consistent with request validation rejecting the configured model.

• Workflow model
  • Changed the detector from gpt-5.4-mini to the supported gpt-5-mini model.

model: gpt-5-mini
engine:
  id: copilot

• Generated lockfile
  • Regenerated the corresponding .lock.yml so runtime metadata and Copilot environment values use the same model string.

• Fixes [aw] Duplicate Code Detector hit HTTP 400 bad request #8600

[Copilot]

🟢 Approval recommended

No unresolved review comments remain, and both files consistently use the supported model.

Pull request overview

Updates the Duplicate Code Detector to use the supported gpt-5-mini Copilot model and synchronizes its lockfile.

Changes:

• Updated the workflow model configuration.
• Regenerated matching lockfile metadata and environment values.

File summaries

File	Description
.github/workflows/duplicate-code-detector.md	Sets the Copilot model to gpt-5-mini.
.github/workflows/duplicate-code-detector.lock.yml	Propagates the updated model through runtime configuration.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Lite (auto)

Note

Copilot is running an experiment and ran this review at Lite.

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[github-actions]

✅ Copilot review passed with no inline comments.

@copilot Add the ready-for-aw label to this PR to trigger agentic CI smoke tests.

[github-actions]

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	94.12%	94.13%	➡️ +0.01%
Statements	92.80%	92.81%	📈 +0.01%
Functions	93.44%	93.44%	➡️ +0.00%
Branches	86.63%	86.64%	📈 +0.01%

📁 Per-file Coverage Changes (1 files)

File	Lines (Before → After)	Statements (Before → After)
src/log-directory-setup.ts	96.2% → 100.0% (+3.78%)	96.3% → 100.0% (+3.71%)

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Coverage comparison generated by scripts/ci/compare-coverage.ts