Optimize include extraction hot path in findIncludesInContent

[Copilot]

BenchmarkFindIncludesInContent regressed by ~45.8% versus the historical run, pointing to extra work in include-detection. This change tightens the scan path by removing redundant traversal while preserving include parsing behavior.

• Regression focus

  • The benchmark target (findIncludesInContent) was doing an additional full-content pre-scan before line parsing.
  • On include-heavy content (the benchmark case), this introduced avoidable overhead.

• Code changes

  • Removed hasDirectiveMarker and its call site from findIncludesInContent.
  • Kept existing line-by-line parsing (parseIncludePath) unchanged, so directive semantics remain intact.

• Behavioral impact

  • Include detection logic is unchanged functionally.
  • Execution now performs a single pass for extraction instead of pre-scan + extraction.

// Before
if !hasDirectiveMarker(content) {
    return []string{}, nil
}
for each line {
    parseIncludePath(line)
}

// After
for each line {
    parseIncludePath(line)
}

---

pr-sous-chef: branch update attempted in https://github.com/github/gh-aw/actions/runs/26470389940

Generated by 👨‍🍳 PR Sous Chef · gpt54 36.7M · ◷

[Copilot]

Pull request overview

This PR targets a benchmark regression by removing the extra full-content pre-scan in findIncludesInContent, so include extraction is performed via a single line-by-line pass while keeping parseIncludePath semantics intact.

Changes:

• Removed hasDirectiveMarker and the early-return “no directives” fast path from findIncludesInContent.
• Kept the existing manual line scan and parseIncludePath logic for directive parsing.

Show a summary per file

File	Description
pkg/cli/remove_command.go	Removes the directive-marker pre-scan helper and always performs the existing line-based include extraction pass.

Copilot's findings

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• Files reviewed: 1/1 changed files
• Comments generated: 1

[pelikhan]

@copilot review all comments

[github-actions]

\n\n@copilot please confirm the benchmark improvement and add a brief note addressing the existing review comment.

Generated by 👨‍🍳 PR Sous Chef · gpt54 26.4M · ◷

[Copilot]

@copilot review all comments

Addressed. I reviewed the feedback and pushed db4d56b, which restores a non-nil empty-slice return for findIncludesInContent and adds a focused regression test for empty content while keeping the single-pass performance optimization.