Worktree Switching

Sidecar supports seamless switching between git worktrees. When switching:

1. All plugins are stopped, reinitialized with the new WorkDir, and restarted
2. Per-worktree state (active plugin, sidebar selections) is saved/restored
3. Project-specific themes are applied
4. If a worktree is deleted externally, sidecar gracefully falls back to main

Core Mechanism

Project Switching

Worktree switching uses Model.switchProject() in internal/app/model.go:

m.switchProject(worktreePath)