feat: 更新问题规划和队列命令，增强解决方案注册和用户选择逻辑

.claude/agents/issue-plan-agent.md

@@ -180,10 +180,23 @@ function decomposeTasks(issue, exploration) {
 - Task validation (all 5 phases present)
 - Conflict detection (cross-issue file modifications)
 
-**Solution Registration**:
-```bash
-# Write solution and register via CLI
-ccw issue bind <issue-id> --solution /tmp/sol.json
+**Solution Registration** (CRITICAL: check solution count first):
+```javascript
+for (const issue of issues) {
+  const solutions = generatedSolutions[issue.id];
+
+  if (solutions.length === 1) {
+    // Single solution → auto-bind
+    Bash(`ccw issue bind ${issue.id} --solution ${solutions[0].file}`);
+    bound.push({ issue_id: issue.id, solution_id: solutions[0].id, task_count: solutions[0].tasks.length });
+  } else {
+    // Multiple solutions → DO NOT BIND, return for user selection
+    pending_selection.push({
+      issue_id: issue.id,
+      solutions: solutions.map(s => ({ id: s.id, description: s.description, task_count: s.tasks.length }))
+    });
+  }
+}
 ```
 
 ---
@@ -255,7 +268,7 @@ Each line is a solution JSON containing tasks. Schema: `cat .claude/workflows/cl
 2. Use vague criteria ("works correctly", "good performance")
 3. Create circular dependencies
 4. Generate more than 10 tasks per issue
-5. Bind when multiple solutions exist
+5. **Bind when multiple solutions exist** - MUST check `solutions.length === 1` before calling `ccw issue bind`
 
 **OUTPUT**:
 1. Register solutions via `ccw issue bind <id> --solution <file>`

.claude/agents/issue-queue-agent.md

@@ -244,4 +244,7 @@ Queue Item ID format: `S-N` (S-1, S-2, S-3, ...)
 **OUTPUT**:
 1. Write `.workflow/issues/queues/{queue-id}.json`
 2. Update `.workflow/issues/queues/index.json`
-3. Return summary with `queue_id`, `total_solutions`, `total_tasks`, `execution_groups`, `conflicts_resolved`, `issues_queued`
+3. **CRITICAL**: Final return MUST be PURE JSON only (no markdown, no explanation, no prose):
+   ```json
+   {"queue_id":"QUE-xxx","total_solutions":N,"total_tasks":N,"execution_groups":[...],"conflicts_resolved":N,"issues_queued":["ISS-xxx"]}
+   ```

.claude/commands/issue/plan.md

@@ -252,7 +252,11 @@ for (let i = 0; i < agentTasks.length; i += MAX_PARALLEL) {
     for (const item of summary.bound || []) {
       console.log(`✓ ${item.issue_id}: ${item.solution_id} (${item.task_count} tasks)`);
     }
-    pendingSelections.push(...(summary.pending_selection || []));
+    // Collect and notify pending selections
+    for (const pending of summary.pending_selection || []) {
+      console.log(`⏳ ${pending.issue_id}: ${pending.solutions.length} solutions → awaiting selection`);
+      pendingSelections.push(pending);
+    }
     if (summary.conflicts?.length > 0) {
       console.log(`⚠ Conflicts: ${summary.conflicts.map(c => c.file).join(', ')}`);
     }
@@ -261,11 +265,13 @@ for (let i = 0; i < agentTasks.length; i += MAX_PARALLEL) {
 }
 ```
 
-### Phase 3: Multi-Solution Selection
+### Phase 3: Multi-Solution Selection (MANDATORY when pendingSelections > 0)
 
 ```javascript
-// Only handle issues where agent generated multiple solutions
+// MUST trigger user selection when multiple solutions exist
 if (pendingSelections.length > 0) {
+  console.log(`\n## User Selection Required: ${pendingSelections.length} issue(s) have multiple solutions\n`);
+
   const answer = AskUserQuestion({
     questions: pendingSelections.map(({ issue_id, solutions }) => ({
       question: `Select solution for ${issue_id}:`,

.claude/commands/issue/queue.md

@@ -199,6 +199,8 @@ Phase 5: Queue Output
 
 ### Phase 1: Solution Loading
 
+**NOTE**: Execute code directly. DO NOT pre-read solution files - Bash cat handles all reading.
+
 ```javascript
 // Load issues.jsonl
 const issuesPath = '.workflow/issues/issues.jsonl';