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

.claude/skills/ccw-help/scripts/analyze_commands.py

@@ -176,21 +176,17 @@ def build_command_relationships() -> Dict[str, Any]:
             "alternatives": ["workflow:resume"],
             "related": ["workflow:session:list", "workflow:status"]
         },
-        "workflow-lite-plan": {
-            "calls_internally": ["workflow:lite-execute"],
-            "next_steps": ["workflow:lite-execute", "workflow:status"],
+        "workflow-lite-planex": {
+            "calls_internally": [],
+            "next_steps": ["workflow:status"],
             "alternatives": ["workflow-plan"],
             "prerequisites": []
         },
         "workflow:lite-fix": {
-            "next_steps": ["workflow:lite-execute", "workflow:status"],
-            "alternatives": ["workflow-lite-plan"],
+            "next_steps": ["workflow:status"],
+            "alternatives": ["workflow-lite-planex"],
             "related": ["workflow-test-fix"]
         },
-        "workflow:lite-execute": {
-            "prerequisites": ["workflow-lite-plan", "workflow:lite-fix"],
-            "related": ["workflow-execute", "workflow:status"]
-        },
         "workflow:review-session-cycle": {
             "prerequisites": ["workflow-execute"],
             "next_steps": ["workflow:review-fix"],
@@ -213,7 +209,7 @@ def build_command_relationships() -> Dict[str, Any]:
 def identify_essential_commands(all_commands: List[Dict]) -> List[Dict]:
     """Identify the most essential commands for beginners."""
     essential_names = [
-        "workflow-lite-plan", "workflow:lite-fix", "workflow-plan",
+        "workflow-lite-planex", "workflow:lite-fix", "workflow-plan",
         "workflow-execute", "workflow:status", "workflow:session:start",
         "workflow:review-session-cycle", "cli:analyze", "cli:chat",
         "memory:docs", "workflow:brainstorm:artifacts",