[WIP] Fix failing GitHub Actions workflow lint-go

[Copilot]

Fix lint-go workflow failure

• Investigate failing lint-go workflow job (63934776261)
• Identify root cause: testifylint error in compiler_string_api_test.go line 229
• Fix assertion to use assert.NotContains instead of assert.False(strings.Contains)
• Remove unused strings import
• Verify tests pass
• Run make fmt
• Run make agent-finish to ensure all checks pass

Original prompt

Fix the failing GitHub Actions workflow lint-go
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 63934776261
Job URL: https://github.com/github/gh-aw/actions/runs/22119141337/job/63934776261

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[Copilot]

Pull request overview

This PR fixes a failing lint-go GitHub Actions workflow by addressing a testifylint violation in the test suite. The issue was caused by using assert.False(strings.Contains(...)) which testifylint flags as an anti-pattern when more specific assertion methods like assert.NotContains are available.

Changes:

• Replaced assert.False(t, strings.Contains(yaml, "Agentic")) with assert.NotContains(t, yaml, "Agentic") in test
• Removed unused strings import from the test file

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