feat: standardize request_user_input schema across all codex skills and add config reminder

- Update all 68 .codex/skills files to use correct request_user_input schema
  (header, id, question, options with label/description)
- Remove deprecated multiSelect, type, value, prompt fields
- Add mandatory confirmation gates to planning-only skills
- Add Codex config.toml reminder to ccw install CLI
- Add Codex configuration section to README.md and README_CN.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.codex/skills/workflow-tdd-plan/SKILL.md

@@ -7,12 +7,12 @@ description: |
   interactive verification. Produces IMPL_PLAN.md with Red-Green-Refactor cycles,
   task JSONs, TODO_LIST.md.
 argument-hint: "[-y|--yes] [--session ID] \"task description\" | verify [--session ID]"
-allowed-tools: spawn_agent, wait, send_input, close_agent, AskUserQuestion, Read, Write, Edit, Bash, Glob, Grep
+allowed-tools: spawn_agent, wait, send_input, close_agent, request_user_input, Read, Write, Edit, Bash, Glob, Grep
 ---
 
 ## Auto Mode
 
-When `--yes` or `-y`: Skip all confirmations, use defaults, auto-verify, auto-continue to execute if PROCEED.
+When `--yes` or `-y`: Skip all confirmations, use defaults, auto-verify. **This skill is planning-only — it NEVER executes implementation. Output is the plan for user review.**
 
 # Workflow TDD Plan
 
@@ -75,9 +75,9 @@ Multi-mode TDD planning pipeline using subagent coordination. Plan mode runs 6 s
 │     ├─ Validate Red-Green-Refactor structure                      │
 │     └─ Present Plan Confirmation Gate                             │
 │                                                                    │
-│  Plan Confirmation Gate                                           │
+│  Plan Confirmation Gate (PLANNING ENDS HERE)                     │
 │     ├─ "Verify TDD Compliance" → Phase 7                         │
-│     ├─ "Start Execution" → workflow-execute                      │
+│     ├─ "Done" → Display next-step command for user               │
 │     └─ "Review Status" → Display inline                          │
 │                                                                    │
 │  ═══ Verify Mode ═══                                              │
@@ -228,11 +228,10 @@ if (existingSessionId) {
       sessionFolder = sessions[0]
       sessionId = sessions[0].split('/').pop()
     } else {
-      const answer = AskUserQuestion({
+      const answer = request_user_input({
         questions: [{
           question: "Multiple sessions found. Select one:",
           header: "Session",
-          multiSelect: false,
           options: sessions.slice(0, 4).map(s => ({
             label: s.split('/').pop(),
             description: s
@@ -422,11 +421,10 @@ TASK DESCRIPTION: ${taskDescription}" --tool gemini --mode analysis --rule analy
       console.log(`   Strategy: ${c.strategy} | Impact: ${c.impact}`)
     })
 
-    const answer = AskUserQuestion({
+    const answer = request_user_input({
       questions: [{
         question: "Accept conflict resolution strategies?",
         header: "Conflicts",
-        multiSelect: false,
         options: [
           { label: "Accept All", description: "Apply all recommended strategies" },
           { label: "Review Each", description: "Approve strategies individually" },
@@ -556,11 +554,10 @@ if (validationErrors.length > 0) {
   validationErrors.forEach(e => console.log(`  - ${e}`))
 
   if (!AUTO_YES) {
-    const answer = AskUserQuestion({
+    const answer = request_user_input({
       questions: [{
         question: "TDD structure validation failed. Continue anyway?",
         header: "Validation",
-        multiSelect: false,
         options: [
           { label: "Fix and Retry", description: "Regenerate tasks with correct structure" },
           { label: "Continue", description: "Proceed despite errors" },
@@ -590,27 +587,26 @@ if (AUTO_YES) {
   console.log(`  [--yes] Auto-verifying TDD compliance...`)
   // → Fall through to Phase 7
 } else {
-  const nextStep = AskUserQuestion({
+  const nextStep = request_user_input({
     questions: [{
       question: "TDD plan generated. What's next?",
       header: "Next Step",
-      multiSelect: false,
       options: [
         { label: "Verify TDD Compliance (Recommended)", description: "Run full TDD compliance verification" },
-        { label: "Start Execution", description: "Proceed to workflow-execute" },
+        { label: "Done", description: "Planning complete — show next-step command" },
         { label: "Review Status", description: "Display plan summary inline" }
       ]
     }]
   })
 
-  if (nextStep['Next Step'] === 'Start Execution') {
-    console.log(`\nReady to execute. Run: $workflow-execute --session ${sessionId}`)
-    return
+  if (nextStep['Next Step'] === 'Done') {
+    console.log(`\nPlanning complete. To execute, run: $workflow-execute --session ${sessionId}`)
+    return  // STOP — this skill is planning-only
   }
   if (nextStep['Next Step'] === 'Review Status') {
     const plan = Read(`${sessionFolder}/IMPL_PLAN.md`)
     console.log(plan)
-    return
+    return  // STOP — this skill is planning-only
   }
   // Verify → continue to Phase 7
 }
@@ -703,10 +699,8 @@ BLOCKED: Critical failures, must fix before execution
   console.log(`  Quality gate: ${qualityGate}`)
   console.log(`  Report: ${sessionFolder}/.process/TDD_COMPLIANCE_REPORT.md`)
 
-  if (AUTO_YES && qualityGate === 'APPROVED') {
-    console.log(`  [--yes] TDD compliance verified. Ready for execution.`)
-    console.log(`  Run: $workflow-execute --session ${sessionId}`)
-  }
+  console.log(`\nPlanning complete. To execute, run: $workflow-execute --session ${sessionId}`)
+  // STOP — this skill is planning-only, NEVER proceed to execution
 }
 ```