Rollback Changes

Rollback failed workflow phases by reading changes log and reversing tracked modifications.

When to Use

• Workflow phase fails and needs state restoration
• Error recovery in worker agents
• Quality gate failures requiring revert

Input

{
  "changes_log_path": ".bug-changes.json",
  "phase": "bug-fixing",
  "confirmation_required": true
}

Changes Log Format

{
  "phase": "bug-fixing",
  "timestamp": "2025-10-18T14:30:00Z",
  "files_modified": [{"path": "src/app.ts", "backup": ".rollback/src-app.ts.backup"}],
  "files_created": ["src/new-file.ts"],
  "commands_executed": ["pnpm install", "pnpm build"],
  "git_commits": ["abc123"],
  "artifacts": [".bug-fixing-plan.json"]
}

Process

1. Read & Parse Changes Log

Use Read tool to load JSON. Validate required fields: phase, timestamp, filesmodified, filescreated, commandsexecuted, gitcommits.

2. Request Confirmation (if required)

Show summary of changes to revert. If user declines, return dry run result.

3. Restore Modified Files

cp "{backup}" "{path}"  # For each {path, backup} in files_modified

4. Delete Created Files

rm -f "{file}"  # For each file in files_created

5. Revert Commands

• pnpm install → re-run to restore lockfile
• git add * → git restore --staged .
• pnpm build → rm -rf dist/
• Other → log warning (cannot auto-revert)

6. Revert Git Commits

git revert --no-edit {sha}  # In reverse order

7. Cleanup Artifacts

Remove plan files and temporary artifacts.

Output

{
  "success": true,
  "phase": "bug-fixing",
  "actions_taken": ["Restored src/app.ts", "Deleted src/new-file.ts", "Reverted abc123"],
  "files_restored": 1,
  "files_deleted": 1,
  "git_commits_reverted": 1,
  "errors": [],
  "warnings": ["Backup not found: .rollback/file.backup (skipped)"]
}

Error Handling

• Missing log: Return error "Changes log not found"
• Invalid JSON: Return parsing error
• Backup not found: Log warning, continue (partial rollback OK)
• Git conflicts: Log error with manual instructions, continue

Safety Features

• Confirmation by default before any changes
• Partial rollback acceptable (documented in warnings)
• Never delete without verifying backup exists
• All actions logged for audit trail

Worker Integration

Workers should track changes during operations:

1. Create .{domain}-changes.json before modifications
2. Create backups in .rollback/ for modified files
3. Log all file creates, commands, and commits
4. On failure: invoke rollback-changes with confirmation_required=false