The removal guard and the per-worktree session count compared each
session's workingDir lexically against the worktree paths git lists,
which are real paths. POST /api/sessions stores workingDir as it was
spelled, so a session started in a worktree of a linked case whose
folder is a symlink (a repository on another disk, macOS /tmp, a
symlinked cases folder), named through that link, counted for no
worktree, and DELETE /api/cases/:name/worktrees/:worktree removed the
folder under the running agent (reproduced: 200 instead of 409).
Each session folder under the case path is now respelled onto the
repository's real top level before the comparison (respellUnder, pure
and lexical, so no filesystem call per session).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Sessions in one case share its folder, so several agents on one repository
edit, build and commit in the same checkout and step on each other. A case
whose folder is a git repository can now keep worktrees under
<repo>/.claude/worktrees/<name> on a new branch (default worktree-<name>),
which is Claude Code's own --worktree layout (measured in Claude Code
2.1.296) and the one Codeman's worktree pill already recognizes.
New module src/git-worktrees.ts (pure name/branch gates, worktree list
parsing, exclude text; IO through an injectable runner) and routes
GET/POST /api/cases/:name/worktrees and
DELETE /api/cases/:name/worktrees/:worktree:
- git runs as argv with -- before paths, non-interactive env, process
group timeouts, --no-optional-locks on reads; names are gated before
git and confirmed with git check-ref-format --branch.
- Only <repo>/.claude/worktrees/<valid-name> is created or removed; every
path component is lstat'ed and realpath-checked, so a symlinked .claude
cannot redirect a create or remove outside the repository.
- /.claude/worktrees/ (and the per-workspace hooks file Codeman writes,
which otherwise blocks git worktree remove) go to the repository's
local info/exclude, never a tracked .gitignore.
- Removal is git worktree remove WITHOUT --force, refused while a live
session runs inside; branch delete is git branch -d, never -D.
- Docker and remote cases are refused with a 400, and git never runs for
a case at or inside a Docker case workspace.
Starting a session reuses the existing create paths: quick-start takes
a worktree name (validated, local cases only) and runs hooks, the skill,
the model override and the session itself in the worktree;
POST /api/sessions takes the worktree as workingDir. The unified session
list names the worktree of a live session from its folder layout, so a
codex or shell session in one gets the worktree pill too.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Codeman maintainer