worktree-execution

Included with Lifetime

$97 forever

Git worktree management for isolated parallel prompt execution. Use when creating isolated environments for prompt comparison or managing worktree lifecycle. Provides creation, cleanup, and orphan detection scripts.

AI Agentsscripts

What this skill does


# Worktree Execution Skill

## Architecture

Two isolated worktrees enable parallel prompt execution.

```
Orchestrator
    │
    ├── Create Worktrees (in ${TMPDIR:-/tmp}/)
    │       ├── worktree-rashomon-original-{timestamp}
    │       └── worktree-rashomon-optimized-{timestamp}
    │
    ├── Parallel Execution (Task tool)
    │       ├── Execution 1 → worktree-rashomon-original
    │       └── Execution 2 → worktree-rashomon-optimized
    │
    ├── Collect Results (await both)
    │
    └── Cleanup Worktrees (always)
```

## Worktree Management

### Creation

**Script**: `scripts/worktree-create.sh`

```bash
# Default labels (original/optimized) for prompt eval
./scripts/worktree-create.sh [repo_root]

# Custom labels for skill eval
./scripts/worktree-create.sh [repo_root] baseline with-skill
./scripts/worktree-create.sh [repo_root] old-version new-version
```

**Output** (stdout):
```
/tmp/worktree-rashomon-{label_a}-20260114-123456
/tmp/worktree-rashomon-{label_b}-20260114-123456
```

**Properties**:
- Location: `${TMPDIR:-/tmp}/`
- Naming: `worktree-rashomon-{label}-{timestamp}`
- Branch: Detached HEAD at current commit
- Labels default to `original` / `optimized` if not specified

### Cleanup

**Script**: `scripts/worktree-cleanup.sh`

```bash
# Remove all rashomon worktrees
./scripts/worktree-cleanup.sh [repo_root]

# Remove specific worktrees
./scripts/worktree-cleanup.sh [repo_root] path1 path2

# Remove only orphaned worktrees (age > 1 hour)
./scripts/worktree-cleanup.sh --orphans [repo_root]
```

**Cleanup Triggers**:
- After successful report generation
- In finally block on any failure
- On timeout
- On startup (orphan detection)

## Parallel Execution Principle

**Key**: To achieve true parallel execution, spawn both Task calls in a single message.

The calling command determines which agents to invoke and how to structure the Task calls. This skill provides only the worktree infrastructure.

## Error Handling (Worktree Operations)

| Scenario | Behavior |
|----------|----------|
| Creation fails | Report git error, suggest checking repository state |
| Cleanup fails | Log warning, attempt orphan cleanup on next run |
| Orphan detected | Force remove worktrees older than 1 hour |

## Scripts Reference

### worktree-create.sh

| Exit Code | Meaning |
|-----------|---------|
| 0 | Success |
| 1 | Not a git repository |
| 2 | Creation failed |

### worktree-cleanup.sh

| Exit Code | Meaning |
|-----------|---------|
| 0 | Success (or nothing to clean) |
| 1 | Not a git repository |
| 2 | Cleanup partially failed |

## Constraints

- **No concurrent comparisons**: One rashomon execution per repository
- **Git required**: git 2.5+ for worktree support
- **Disk space**: Sufficient space for worktree copies

Files: 3

Size: 8.3 KB

Complexity: 35/100

Category: AI Agents

Source: https://github.com/shinpr/rashomon/tree/main/skills/worktree-execution

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