Two fixes for bare repo worktree setups:
1. fork_protection.go: Use git.GetGitDir() instead of hardcoding .git
In worktrees, .git is a file containing gitdir path, not a directory.
Using GetGitDir() handles this correctly.
2. sync_git.go: Simplify gitHasBeadsChanges to use absolute paths
The previous code used git -C main-repo-root status, but in bare
repo worktrees GetMainRepoRoot() returns the parent of the bare repo
which is not a valid working tree. Using absolute paths without -C
lets git find the repo from cwd, which always works.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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