AC Checkpoint Manager

Manage checkpoints for safe rollback during autonomous development.

Purpose

Creates and manages checkpoints that enable rollback to known-good states, providing safety during autonomous operation.

Quick Start

from scripts.checkpoint_manager import CheckpointManager

manager = CheckpointManager(project_dir)
checkpoint = await manager.create_checkpoint("before-refactor")
await manager.restore_checkpoint(checkpoint.id)

Checkpoint Types

• Auto: Created automatically at key points
• Manual: Created on explicit request
• Feature: Created after each feature completion
• Session: Created at session boundaries

Checkpoint Structure

.claude/checkpoints/
├── checkpoint-20240115-100000/
│   ├── metadata.json
│   ├── feature_list.json
│   ├── execution-state.json
│   └── git-ref.txt
├── checkpoint-20240115-110000/
│   └── ...

Auto-Checkpoint Points

• Before starting new feature
• After completing feature
• Before risky operations
• At context compaction

Workflow

1. CREATE    → Snapshot current state
2. STORE     → Save files and git ref
3. VALIDATE  → Verify checkpoint integrity
4. (on rollback)
5. RESTORE   → Restore from checkpoint
6. VERIFY    → Confirm restoration

Integration

• Used by: ac-state-tracker for state recovery
• Used by: ac-task-executor before risky operations

API Reference

See scripts/checkpoint_manager.py for full implementation.