refactor worktree into smaller components

[webdevcody]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @webdevcody, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly improves the architecture of the worktree management feature by refactoring a large component into a more modular and maintainable design. The change introduces a new WorktreePanel that leverages a suite of smaller, focused components and custom hooks to manage state and UI interactions, leading to a cleaner codebase and better scalability.

Highlights

• Component Refactoring: The monolithic WorktreeSelector component has been refactored into a new WorktreePanel component, which now orchestrates several smaller, specialized sub-components and custom hooks.
• Modular Architecture: Introduced a modular structure by creating dedicated components like BranchSwitchDropdown, WorktreeActionsDropdown, and WorktreeTab to handle specific UI elements and interactions.
• Custom Hooks for Logic Encapsulation: Extracted complex logic into reusable custom hooks, including useWorktrees, useDevServers, useBranches, useWorktreeActions, useDefaultEditor, and useRunningFeatures, improving separation of concerns and testability.
• Improved Maintainability: The breakdown into smaller units enhances code readability, makes future modifications easier, and reduces the complexity of individual files.

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[gemini-code-assist]

Code Review

This pull request is an excellent refactoring of the WorktreeSelector component. Breaking down the monolithic component into smaller, more manageable components and custom hooks significantly improves the code's readability, maintainability, and testability. The new file structure is logical and follows best practices for React development.

I've found one high-severity issue related to state management in the new useBranches hook, which was likely carried over from the original implementation. The state for branch information is shared across all worktree tabs, which can lead to incorrect data being displayed. My review comment provides details on the issue and a suggested fix.

Overall, this is a great step forward for the codebase.

[gemini-code-assist]

The useBranches hook is called once for the entire WorktreePanel, which causes all WorktreeTab components to share the same state for branches, aheadCount, behindCount, and branchFilter. This is incorrect because this data is specific to each worktree. For example, opening the dropdown for one worktree will fetch its branch data and overwrite the state for all other tabs.

To fix this, the state from useBranches should be scoped to each individual WorktreeTab. You can achieve this by creating a new component that wraps WorktreeTab and calls useBranches inside it. This new component would then be rendered inside the .map() loop, ensuring each tab has its own isolated branch state.