fix cleaning macos security scope

[sensuikan1973]

No description provided.

[gemini-code-assist]

Code Review

This pull request addresses an important aspect of resource management on macOS by ensuring that the security scope for a book file is properly cleaned up. The change made is clear, concise, and directly improves the robustness of the application. Well done on this targeted fix!

Since no specific style guide was provided, this review assumes adherence to common Dart/Flutter conventions and best practices, which the changes align with.

Summary of Findings

• Improved Resource Cleanup for macOS Security Scope: The core change in this PR, nullifying _macosBookmarkResolvedFile after stopping access to a security-scoped resource, is a significant improvement. It ensures proper state cleanup and prevents potential errors from using stale file references, enhancing application stability on macOS.
• Minor Stylistic Change (Not Commented): An empty line was added at lib/engine/options/native/book_file_option.dart:83. This is a minor stylistic choice with no functional impact. In line with the review settings to focus on medium or higher severity issues, no specific review comment was added for this.
• PR Description (Not Commented): The pull request description is currently empty. While the title is descriptive for this small change, consistently adding a brief description can aid reviewers and future maintainers in understanding the context and intent more quickly. This is a minor process suggestion and was not raised as a specific review comment due to severity settings.

Merge Readiness

The change in this pull request is a clear improvement and enhances the robustness of macOS-specific resource handling. From a technical perspective, the code appears sound and ready for merging. As always, please ensure it passes all relevant CI checks and obtains any other necessary approvals before merging. I am unable to approve the pull request myself, but I recommend it for merging once standard procedures are complete.

[gemini-code-assist]

This line is a valuable addition for ensuring correct state management. By nullifying _macosBookmarkResolvedFile after access to the security-scoped resource is stopped, it effectively prevents the application from potentially using a stale or unauthorized file reference in subsequent operations. This significantly enhances the robustness and correctness of handling these resources on macOS.

Was this change prompted by an observed issue, or is it a proactive measure to improve resource handling?