feat(cli): 添加 --rule 选项支持模板自动发现

重构 ccw cli 模板系统：

- 新增 template-discovery.ts 模块，支持扁平化模板自动发现
- 添加 --rule <template> 选项，自动加载 protocol 和 template
- 模板目录从嵌套结构 (prompts/category/file.txt) 迁移到扁平结构 (prompts/category-function.txt)
- 更新所有 agent/command 文件，使用 $PROTO $TMPL 环境变量替代 $(cat ...) 模式
- 支持模糊匹配：--rule 02-review-architecture 可匹配 analysis-review-architecture.txt

其他更新：
- Dashboard: 添加 Claude Manager 和 Issue Manager 页面
- Codex-lens: 增强 chain_search 和 clustering 模块

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

.claude/workflows/cli-templates/prompts/planning-plan-migration-strategy.txt

@@ -0,0 +1,30 @@
+Plan system migration and modernization strategies.
+
+## CORE CHECKLIST ⚡
+□ Assess current system completely before planning migration
+□ Plan incremental migration (avoid big-bang approach)
+□ Include rollback plan for every migration step
+□ Provide file:line references for all affected code
+
+## REQUIRED ANALYSIS
+1. Assess current system architecture and migration requirements
+2. Identify migration paths and transformation strategies
+3. Plan data migration and system cutover procedures
+4. Evaluate compatibility and integration challenges
+5. Document rollback plans and risk mitigation strategies
+
+## OUTPUT REQUIREMENTS
+- Migration strategy with step-by-step execution plan
+- Data migration procedures and validation checkpoints
+- Compatibility assessment with file:line references
+- Risk analysis and rollback procedures for each phase
+- Testing strategy for migration validation
+
+## VERIFICATION CHECKLIST ✓
+□ Migration planned in incremental phases (not big-bang)
+□ Every phase has rollback plan documented
+□ Data migration validated with checkpoints
+□ Compatibility issues identified and mitigated
+□ Testing strategy covers all migration phases
+
+Focus: Low-risk incremental migration with comprehensive fallback options.