Problem

The current devenv git-hooks integration has accumulated substantial Git config orchestration logic to work around worktree-specific hook installation behavior. This is hard to maintain in devenv and duplicates installer concerns that should live upstream in prek.

Context

• active downstream PR with accumulated wrapper logic: fix(git-hooks): set worktree-safe core.hooksPath #2503
• original report context: core.hooksPath incorrectly calculated for git worktrees git-hooks.nix#688
• upstream tracking issue in prek: Make git hook installation worktree-safe and transactional j178/prek#1672

Decision

Implement the worktree-safe and transactional installation semantics in prek first, then simplify devenv to a thin integration wrapper.

Follow-up plan in devenv

1. Start a fresh devenv branch/PR after prek fix lands (or is available in nixpkgs input).
2. Remove most bash-level Git config mutation logic from src/modules/integrations/git-hooks.nix.
3. Keep only stage mapping / invocation glue needed for devenv task wiring.
4. Add regression coverage in devenv integration tests for the previously reported worktree scenario.
5. Verify no behavior regressions for non-worktree repositories.

Acceptance criteria

• devenv no longer carries complex hooksPath/worktree rollback logic
• worktree scenario from issue [bugfix]: remove extra quotes because escapeShellArg adds them #688 works through upstream prek behavior
• manual-only and failure modes remain safe

Created on behalf of @schickling.