test(agentflare-shim): cover in_scoped_project's home-boundary walk-up

[getappz]

Ports test coverage from the closed/superseded PR #278 (feat/lean-ctx-winshim-227) — the feature itself landed via #279 with a different implementation, but these 4 unit tests for in_scoped_project's home-boundary walk-up were never carried over. Cherry-picked from 3315c3e.

Summary by CodeRabbit

• Tests
  • Added unit test coverage for project-scope detection when a marker exists in the current directory or an ancestor.
  • Added regression tests to ensure directory traversal stops at the configured home boundary, preventing unintended marker detection.
  • Added coverage confirming directories are not considered scoped when no reachable marker exists within the bounded search.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

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Run ID: 3da53412-6302-4fa0-9bef-c3a7017e28ef

📥 Commits

Reviewing files that changed from the base of the PR and between aca8f47 and 9d3cbff.

📒 Files selected for processing (1)

• crates/agentflare-shim/src/main.rs

🚧 Files skipped from review as they are similar to previous changes (1)

• crates/agentflare-shim/src/main.rs

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📝 Walkthrough

Walkthrough

Added filesystem-based unit tests for in_scoped_project, covering marker detection in the start directory and ancestors, home-boundary traversal, and unreachable markers.

Changes

Scoped project detection

Layer / File(s)	Summary
Scoped project validation crates/agentflare-shim/src/main.rs	Adds four temporary-directory tests covering start-directory and ancestor markers, the provided home boundary, and non-scoped results when no marker is reachable.

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

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description omits the required Summary, Test plan, and Notes for reviewers sections from the template.	Add the required sections: Summary, Test plan with checkboxes, and Notes for reviewers with risk areas and backwards compatibility.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly names the shim and the specific in_scoped_project walk-up coverage being added.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/agentflare-shim-home-boundary-coverage

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