chore(release): v6.3.9 - Issue System Consistency

- Unified four-layer architecture (Schema/Agent/Command/Implementation)
- Upgraded to Rich Plan model with lifecycle fields
- Added multi-solution generation support
- Consolidated schemas (deleted redundant issue-task-jsonl-schema, solutions-jsonl-schema)
- Fixed field naming consistency (acceptance, lifecycle_status, priority mapping)
- Added search tool fallback chain to issue-plan-agent

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,29 @@ All notable changes to Claude Code Workflow (CCW) will be documented in this fil
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [6.3.9] - 2025-12-27
+
+### 🔧 Issue System Consistency | Issue系统一致性修复
+
+#### Schema Unification | Schema统一
+- **Upgraded**: `solution-schema.json` to Rich Plan model with full lifecycle fields
+- **Added**: `test`, `regression`, `commit`, `lifecycle_status` objects to task schema
+- **Changed**: `acceptance` from string[] to object `{criteria[], verification[]}`
+- **Added**: `analysis` and `score` fields for multi-solution evaluation
+- **Removed**: Redundant `issue-task-jsonl-schema.json` and `solutions-jsonl-schema.json`
+- **Fixed**: `queue-schema.json` field naming (`queue_id` → `item_id`)
+
+#### Agent Updates | Agent更新
+- **Added**: Multi-solution generation support based on complexity
+- **Added**: Search tool fallback chain (ACE → smart_search → Grep → rg → Glob)
+- **Added**: `lifecycle_requirements` propagation from issue to tasks
+- **Added**: Priority mapping formula (1-5 → 0.0-1.0 semantic priority)
+- **Fixed**: Task decomposition to match Rich Plan schema
+
+#### Type Safety | 类型安全
+- **Added**: `QueueConflict` and `ExecutionGroup` interfaces to `issue.ts`
+- **Fixed**: `conflicts` array typing (from `any[]` to `QueueConflict[]`)
+
 ## [6.2.0] - 2025-12-21
 
 ### 🎯 Native CodexLens & Dashboard Revolution | 原生CodexLens与Dashboard革新

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-code-workflow",
-  "version": "6.3.8",
+  "version": "6.3.9",
   "description": "JSON-driven multi-agent development framework with intelligent CLI orchestration (Gemini/Qwen/Codex), context-first architecture, and automated workflow execution",
   "type": "module",
   "main": "ccw/src/index.js",