* fix(#2774): inclusion-based worktree cleanup to protect workspace .git
The cleanup blocks in execute-phase.md and quick.md used an exclusion
filter (`grep -v "$(pwd)$"`) to skip the current worktree before calling
`git worktree remove --force` on everything else. The exclusion fails
whenever the current workspace is itself a worktree of an upstream repo:
- multi-workspace setups where `git worktree list` reports the registry
path as a different absolute path than `$(pwd)`
- the cross-drive Windows case where the registry reports `E:/...` while
`$(pwd)` resolves to `C:/...` — the equality test never holds, every
other worktree (including the workspace itself) is removed, and the
workspace's `.git` pointer file is destroyed.
Switches both cleanup blocks to an inclusion-based filter that targets
only agent-spawned worktrees under `.claude/worktrees/agent-`, the
namespace Claude Code's `isolation="worktree"` always uses for executor
worktrees. The workspace path can never collide with that prefix.
Adds tests/bug-2774-worktree-cleanup-workspace-safety.test.cjs covering:
- both workflow files use the inclusion filter
- neither falls back to the broken `grep -v "$(pwd)$"` guard
- end-to-end simulation of porcelain output with workspace + agent
worktrees yields only the agent worktree
Closes#2774
* test(#2774): replace source-grep with behavioral test of cleanup pipeline
* fix(#2774): whitespace-safe worktree iteration with while/read
CodeRabbit review on PR #2778 flagged that `for WT in $WORKTREES` splits
on whitespace. Any agent worktree path containing a space (e.g. a workspace
under '/Users/dev/My Workspace/') would be torn into broken half-paths,
`git -C` would fail on each fragment, and the executor branch would never
be deleted.
Switch both cleanup blocks (quick.md and execute-phase.md) to:
while IFS= read -r WT; do
[ -z "$WT" ] && continue
...
done < <(git worktree list --porcelain | grep ... | sed ...)
Process substitution feeds the pipeline output line-by-line — IFS= and -r
preserve every byte of the path including embedded spaces.
Also rename the misleading `makeBareTempGitRepo` helper to
`makeTempUpstreamRepo` (it does not pass --bare; it inits a normal repo
with an initial commit so worktree-add works).
Add two new behavioral tests:
- discovery pipeline yields whitespace paths intact on a single line
- the actual while/read loop iterates each whitespace-bearing path
exactly once (would fail with the previous `for WT in` form)
Tests: 5681 pass, 0 fail.
