Add automated bead-to-PR workflow mode to 'co work create'

[newhook]

Summary

This PR introduces an automated end-to-end workflow mode for co work create that transforms a bead into a complete pull request without manual intervention.

Key Features

• New --bead flag for co work create that triggers automated workflow mode
• Auto-generated branch names from bead titles (e.g., "Add user authentication" → feat/add-user-authentication)
• Transitive dependency collection - automatically includes all blocked_by dependencies
• Epic support - when given an epic bead, processes all child beads
• Automated review-fix loop - runs up to 5 iterations until code review passes
• New co task set-review-epic command - links review tasks to their issue epics for accurate issue tracking

Changes

New Files:

• cmd/work_automated.go - Complete automated workflow orchestration
• cmd/work_automated_test.go - 35+ tests for branch name generation
• internal/db/migrations/006_task_metadata.sql - Task metadata table
• internal/db/task_metadata.go - Metadata operations (get/set/delete)
• sql/queries/task_metadata.sql - SQLC query definitions

Modified Files:

• cmd/work.go - Added --bead flag support
• cmd/task.go - Added set-review-epic subcommand
• internal/beads/client.go - Added GetTransitiveDependenciesInDir and GetBeadWithChildrenInDir
• internal/beads/client_test.go - Integration tests for new functions
• internal/db/schema.sql - Added task_metadata table
• internal/db/sqlc/* - Regenerated SQLC code

Usage

# Traditional mode (unchanged)
co work create my-feature-branch

# New automated mode
co work create --bead ac-xyz

The automated workflow:

1. Creates work unit with auto-generated branch name
2. Collects bead and its dependencies/children
3. Plans tasks using auto-grouping
4. Executes all tasks
5. Runs review-fix loop until clean (max 5 iterations)
6. Creates PR

Technical Details

Review-Fix Loop Improvements:

• Captures pre-review bead IDs to accurately detect new issues
• Uses review_epic_id metadata to track which beads belong to a review
• Falls back to new-bead detection if no epic is set

Task Metadata System:

• Generic key-value store on tasks via task_metadata table
• Primary use case: review_epic_id for review task tracking
• Displayed in co task show output

Beads Resolved

• ac-au3 (epic): Add automated bead-to-PR workflow mode to 'co work create'
• ac-rba: Add --bead flag to co work create command
• ac-qcz: Add helper functions for branch name generation and dependency collection
• ac-ys9: Add transitive dependency collection to beads client
• ac-2rz: Implement automated workflow orchestration
• ac-7pu: Add database migrations for automated workflow
• ac-8es: Implement automated review-fix loop

Test Plan

• Unit tests for branch name generation (35+ test cases)
• Unit tests for beads client functions
• Integration tests for transitive dependency collection
• Tests for automated workflow functions
• go test ./... passes
• Manual testing of automated workflow end-to-end

🤖 Generated with Claude Code