refactor(workflow): rename workflow-lite-plan to workflow-lite-planex and remove standalone lite-execute

- Rename skill directory from workflow-lite-plan to workflow-lite-planex (planex = plan + execute)
- Remove standalone lite-execute command entry from command.json and analyze_commands.py
- Update all 60+ files referencing workflow-lite-plan to use workflow-lite-planex
- Update descriptions to clarify Phase 1: plan → Phase 2: execute architecture
- Remove lite-execute as standalone command from orchestrator routing tables
- Update docs (EN/ZH) to reflect unified planex naming and phase descriptions

docs/zh/skills/core-skills.md

@@ -679,24 +679,24 @@ Skill(skill="workflow-plan")
 
 ---
 
-### workflow-lite-plan
+### workflow-lite-planex
 
 **用途**：轻量级规划和执行技能
 
-**触发器**：`workflow-lite-plan`、`workflow:lite-execute`
+**触发器**：`workflow-lite-planex`
 
-**说明**：路由到 lite-plan 或 lite-execute，带提示增强。
+**说明**：统一的规划和执行技能（Phase 1: 规划，Phase 2: 执行），带提示增强。
 
 **阶段**：
-1. 阶段 1：轻量级计划
-2. 阶段 2：轻量级执行
+1. 阶段 1：轻量级计划（规划管道）
+2. 阶段 2：轻量级执行（执行引擎，内部）
 
-**模式**：`lite-plan`、`lite-execute`
+**模式**：`plan`（Phase 1 → Phase 2 自动衔接）
 
 **产物**：LITE_PLAN.md、执行结果
 
 ```bash
-Skill(skill="workflow-lite-plan")
+Skill(skill="workflow-lite-planex")
 ```
 
 ---
@@ -707,7 +707,7 @@ Skill(skill="workflow-lite-plan")
 
 **触发器**：`workflow-multi-cli-plan`、`workflow:multi-cli-plan`
 
-**说明**：路由到 multi-cli-plan 或 lite-execute，带提示增强。
+**说明**：多 CLI 协作规划和执行技能（Phase 1: 规划，Phase 2: 执行），带提示增强。
 
 **阶段**：
 1. 阶段 1：多 CLI 计划（ACE 上下文 → 讨论 → 计划 → 执行）
@@ -851,7 +851,7 @@ Skill(skill="review-cycle")
 **使用场景**：快速迭代和快速原型
 
 ```bash
-Skill(skill="workflow-lite-plan")
+Skill(skill="workflow-lite-planex")
 Skill(skill="workflow-execute")
 ```
 
@@ -1039,7 +1039,7 @@ Skill(skill="skill-tuning")
 | 层级 | 技能 |
 |------|------|
 | 元技能 | skill-generator、skill-tuning、workflow-skill-designer |
-| 编排器 | workflow-plan、workflow-lite-plan、workflow-multi-cli-plan |
+| 编排器 | workflow-plan、workflow-lite-planex、workflow-multi-cli-plan |
 | 执行器 | workflow-execute |
 | 团队负责人 | team-lifecycle (v5) |
 
@@ -1085,7 +1085,7 @@ Skill(skill="skill-tuning")
 | `manage issue` | issue-manage |
 | `workflow-plan`、`workflow-plan-verify`、`workflow:replan` | workflow-plan |
 | `workflow-execute` | workflow-execute |
-| `workflow-lite-plan` | workflow-lite-plan |
+| `workflow-lite-planex` | workflow-lite-planex |
 | `workflow-multi-cli-plan`、`workflow:multi-cli-plan` | workflow-multi-cli-plan |
 | `workflow-tdd-plan` | workflow-tdd-plan |
 | `workflow-test-fix`、`test fix workflow` | workflow-test-fix |