v6.3.9 - Issue System Consistency

What's Changed

Issue System Unified Architecture

• Four-layer consistency: Schema → Agent → Command → Implementation fully aligned
• Rich Plan model: Upgraded schemas with lifecycle fields (test, regression, commit, lifecycle_status)
• Multi-solution support: Plan agent now generates multiple solutions for complex issues with user selection

Schema Consolidation

• Deleted redundant issue-task-jsonl-schema.json
• Deleted redundant solutions-jsonl-schema.json
• Merged analysis/score fields into solution-schema.json

Field Naming Consistency

• Unified acceptance object structure: {criteria[], verification[], manual_checks?}
• Fixed lifecycle_status vs current_phase mismatch
• Aligned priority mapping: task.priority (1-5) → semantic_priority (0.0-1.0)

Agent Improvements

• Added search tool fallback chain to issue-plan-agent: ACE → smart_search → Grep → rg → Glob
• Added multi-solution generation guidance to issue-plan-agent
• Fixed queue-agent input context structure

Data Flow

new (init) → plan (issue-plan-agent) → queue (issue-queue-agent) → execute

Full Changelog: v6.3.8...v6.3.9