### Problem to solve When I’m working with stacks on Git worktrees, I expect stacks to be shared across all worktrees for the same repository. Right now, `StackLocation()` in `internal/git/stacked.go` uses `git rev-parse --git-dir`. In a linked worktree, that points to the worktree’s private Git admin directory `.git/worktrees/<name>`, which means each worktree gets its own separate copy of the stack metadata. That makes stacks created in one worktree/or on main repo invisible in another. Worktrees are rising in popularity now, as AI agents are adopting them for parallel work. ### Proposal Store stack metadata in the shared repository Git directory instead of the per-worktree Git directory. In practice, that means using `git rev-parse --git-common-dir` instead of `--git-dir` to keep this backward compatible we can migrate any existing stack metadata from the worktree-specific location if it already exists. ### Further details ### Links / references