Walkthrough

This PR fixes a bug where closing an issue after editing its title creates a new open-issue file instead of properly managing the original. The core change modifies SaveIssue in pkg/storage.go to preserve existing issue filenames when an issue already exists in the target directory, rather than always generating a new slug-based filename. The counter is incremented, a new issue document is added describing the bug, and tests are included to verify the fix works correctly.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

• pkg/storage.go: The conditional logic for checking existing filenames and reusing paths is straightforward but affects core save behavior—verify the FindIssueFile call and error handling are correct
• pkg/storage_test.go: Contains a duplicate test (TestSaveIssuePreservesExistingFilename appears twice)—one copy should be removed
• cmd/close_test.go: The new test is clear and follows existing patterns
• Counter and issue document: Trivial updates

Poem

🐰 A title may change, but the issue's true face,
Now keeps its original slug in its place,
When closed after edits, no duplicate born—
Just one tidy file, as it was that fine morn!
Hop-tidy-hop! ✨

Pre-merge checks and finishing touches

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