Hook install/uninstall fails in git worktree repositories

[vivindeena]

Bug description

Problem
The aicommits hook install and aicommits hook uninstall commands break when run inside git worktrees because they assume .git is always a directory.

Root Cause
In git worktrees, .git is a file (not a directory) containing a reference to the main repository's git directory:
gitdir: /path/to/main/repo/.git/worktrees/
The current code (src/commands/hook.ts:11) always attempts to use .git/hooks/${hookName} as the hook path, which doesn't exist in worktrees.

Expected Behavior
Worktrees have their own hooks directory located at:

• .git/worktrees//hooks/ (relative to main repo)
• Or accessible via git rev-parse --git-common-dir and git rev-parse --git-path hooks
  The install/uninstall should:

1. Detect if running in a worktree
2. Use the worktree-specific hooks directory instead of the main repo's hooks
3. Allow installing hooks per-worktree without affecting other worktrees

Current Code Location
src/commands/hook.ts:11, 39 - hardcodes .git/hooks/ path without handling worktree scenarios

aicommits version

v2.0.0

Environment

System:
    OS: macOS 26.2
    CPU: (10) arm64 Apple M1 Pro
    Memory: 174.03 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.12.0 - /Users/vivin/.nvm/versions/node/v24.12.0/bin/node
    npm: 11.6.2 - /Users/vivin/.nvm/versions/node/v24.12.0/bin/npm
    pnpm: 10.20.0 - /Users/vivin/.local/share/pnpm/pnpm
    bun: 1.3.1 - /Users/vivin/.bun/bin/bun

Can you contribute a fix?

• I’m interested in opening a pull request for this issue.

[vivindeena]

#315