feat(dev-workflow): Phase 2-9 prompt templates + orchestrator

Phase 2 头脑风暴:
- prompts/brainstorming.md - 问答策略和需求收集模板

Phase 3 方案设计:
- prompts/solution-design.md - 3个子代理启动配置

Phase 4 方案审核:
- prompts/solution-review.md - 交叉审核和综合方案生成

Phase 5 方案汇报:
- prompts/solution-report.md - 用户决策处理

Phase 6 Spec编排:
- prompts/spec-planning.md - 依赖分析和分波计划

Phase 7 并行开发:
- prompts/parallel-development.md - 波次执行逻辑

Phase 8 测试:
- prompts/testing.md - 测试框架检测和重试逻辑

Phase 9 代码审查:
- prompts/code-review.md - 3个子代理独立审查

Phase 10 修复验证:
- prompts/fix-verification.md - 修复循环和最终汇报

主编排器:
- orchestrator.py - 9阶段协调逻辑
- 状态管理和恢复机制

.planning/ROADMAP.md

@@ -251,7 +251,7 @@
 
 | Phase | Status | Plans | Summaries |
 |-------|--------|-------|-----------|
-| 1 | Not Started | 0/1 | 0/1 |
+| 1 | ✓ Completed | 1/1 | 1/1 |
 | 2 | Not Started | 0/1 | 0/1 |
 | 3 | Not Started | 0/1 | 0/1 |
 | 4 | Not Started | 0/1 | 0/1 |

.planning/STATE.md

@@ -1,9 +1,9 @@
 ---
-phase: 0
-stage: initialized
+phase: 1
+stage: completed
 milestone: v1.0
 started: 2026-03-09T18:52:00+08:00
-updated: 2026-03-09T18:52:00+08:00
+updated: 2026-03-09T18:58:00+08:00
 retry_count: 0
 ---