# Step 2 Verification Report: compare-worktrees Command

**Date:** 2026-01-30
**Verdict:** PASS
**Score:** 4.4/5.0

## Summary

The `compare-worktrees` command implementation is complete, well-structured, and follows the patterns established by `create-worktree.md` in Step 1. All requirements have been met.

## Issues

None

## Improvements (Optional)

- Consider adding `model: haiku` field value consistency note in documentation
- Add cross-reference to merge-worktree command once created

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## Detailed Evaluation

### 1. Correctness (35%) - Score: 4.5/5.0

**Requirements Checklist:**

| Requirement | Status | Evidence |
|-------------|--------|----------|
| Compares worktrees or worktree and current branch | PASS | Step 3 covers all comparison targets (lines 26-31) |
| Based on user input and local state | PASS | Step 2 parses multiple input types (lines 18-24) |
| Supports comparison of specific files or directories | PASS | Step 4 addresses file/directory comparison (lines 33-37), Examples show this (lines 97-102, 112-114) |
| Follows patterns from Step 1 | PASS | Frontmatter structure identical, CRITICAL instruction pattern used |

**Key Features Verified:**
- Interactive mode when no arguments provided
- File path arguments for specific comparisons
- `--stat` flag for summary statistics
- `--worktrees` flag for specifying two worktrees
- Branch name for comparing with branch's worktree
- Git diff fallback when no worktrees exist

### 2. Integration (25%) - Score: 4.5/5.0

**Pattern Matching with create-worktree.md:**

| Pattern Element | create-worktree.md | compare-worktrees.md | Match |
|-----------------|-------------------|---------------------|-------|
| Frontmatter structure | `---` with description, argument-hint, model, allowed-tools | Identical structure | YES |
| model field | `model: haiku` | `model: haiku` | YES |
| Allowed-tools format | `Bash(git worktree:*)`, etc. | `Bash(git worktree:*)`, etc. | YES |
| CRITICAL instruction prefix | "CRITICAL: Perform the following steps exactly as described:" | Identical | YES |
| Current state check as Step 1 | Yes | Yes | YES |
| Parse user input step | Yes | Yes | YES |
| Numbered instruction steps | 5 steps | 6 steps | YES |
| Section headers | All present | All present | YES |

### 3. Completeness (25%) - Score: 4.3/5.0

**Required Elements Present:**

| Element | Present | Location |
|---------|---------|----------|
| YAML frontmatter | YES | Lines 1-6 |
| description field | YES | Line 2 |
| argument-hint field | YES | Line 3 |
| model field | YES | Line 4 |
| allowed-tools field | YES | Line 5 |
| Clear task description | YES | Lines 8-10 |
| Numbered instructions | YES | Lines 14-70 |
| Code examples | YES | Lines 41-65, 98-134 |
| Comparison modes table | YES | Lines 74-80 |
| Examples section | YES | Lines 95-134 |
| Output format section | YES | Lines 136-170 |
| Common workflows | YES | Lines 172-198 |
| Important notes | YES | Lines 200-213 |
| Integration section | YES | Lines 215-225 |
| Troubleshooting | YES | Lines 227-241 |

### 4. Quality (15%) - Score: 4.2/5.0

**Strengths:**
- Comprehensive comparison modes table
- Clear output format examples
- Integration section linking to create-worktree
- Troubleshooting covers common failure scenarios
- Good balance between automated behavior and user interaction

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## Weighted Score Calculation

| Criterion | Weight | Score | Weighted |
|-----------|--------|-------|----------|
| Correctness | 35% | 4.5 | 1.575 |
| Integration | 25% | 4.5 | 1.125 |
| Completeness | 25% | 4.3 | 1.075 |
| Quality | 15% | 4.2 | 0.630 |
| **Total** | **100%** | - | **4.405** |

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## Verification Questions

**Q1: Does the command properly handle the case when no worktrees exist?**
A1: Yes, line 31 states: "If no other worktrees exist: Offer to compare with a branch using `git diff`" and the troubleshooting section addresses this scenario.

**Q2: Does the frontmatter follow the exact pattern from create-worktree.md?**
A2: Yes, both commands use identical frontmatter structure with description, argument-hint, model: haiku, and allowed-tools fields.

**Q3: Does the command support all required comparison scenarios from the step requirements?**
A3: Yes - worktree vs worktree, worktree vs current branch, and specific files/directories are all supported.

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## Files Reviewed

1. `/home/leovs09/work/neolab/context-engineering-kit/plugins/git/commands/compare-worktrees.md` (implementation)
2. `/home/leovs09/work/neolab/context-engineering-kit/plugins/git/commands/create-worktree.md` (Step 1 pattern reference)
3. `/home/leovs09/work/neolab/context-engineering-kit/plugins/customaize-agent/commands/create-command.md` (command creation guide)
4. `/home/leovs09/work/neolab/context-engineering-kit/plugins/git/skills/worktrees/SKILL.md` (worktrees skill reference)

---

## Conclusion

The compare-worktrees command is ready for use. It properly implements all required functionality for comparing files and directories between git worktrees, follows the established patterns from Step 1, and includes comprehensive documentation with examples, troubleshooting, and integration guidance.
