chore: retain ignored worktrees directory

[senamakel]

Summary

• retain the local worktree container with a tracked .gitkeep
• ignore generated worktree contents

Validation

• bash scripts/check-public-boundary.sh

Summary by CodeRabbit

• Chores
  • Added a placeholder to preserve the worktrees directory.
  • Updated repository settings so temporary worktree contents are excluded while retaining the directory structure.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: b3e0a179-9616-4353-91aa-360a2ebff8a5

📥 Commits

Reviewing files that changed from the base of the PR and between 6c3a2e7 and 520318a.

📒 Files selected for processing (2)

• .gitignore
• worktrees/.gitkeep

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The changes ignore files in /worktrees/ while preserving worktrees/.gitkeep. The placeholder keeps the directory tracked.

Changes

Worktrees directory tracking

Layer / File(s)	Summary
Configure worktrees tracking .gitignore, worktrees/.gitkeep	The ignore rules exclude /worktrees/* and un-ignore worktrees/.gitkeep. The empty placeholder file is added to the directory.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 52031

This change retains the worktrees directory while ignoring generated contents and introduces no actionable merge-blocking risk beyond normal checks and review.

Poem

A rabbit hops through tracked space
While hidden worktrees leave no trace
One keep file marks the ground
Ignore rules guard files around
The directory stays sound

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: preserving the ignored worktrees directory with a tracked placeholder.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (2 skipped: 2 unsupported.)

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_{Comment @coderabbitai help to get the list of available commands.}

[tinysweeper]

tinysweeper found nothing blocking. Approving.

$0.0000 · 0 in / 0 out