---
name: queue
description: Form execution queue from bound solutions using issue-queue-agent (solution-level)
argument-hint: "[--queues <n>] [--issue <id>]"
allowed-tools: TodoWrite(*), Task(*), Bash(*), Read(*), Write(*)
---

# Issue Queue Command (/issue:queue)

## Overview

Queue formation command using **issue-queue-agent** that analyzes all bound solutions, resolves **inter-solution** conflicts, and creates an ordered execution queue at **solution level**.

**Design Principle**: Queue items are **solutions**, not individual tasks. Each executor receives a complete solution with all its tasks.

## Core Capabilities

- **Agent-driven**: issue-queue-agent handles all ordering logic
- **Solution-level granularity**: Queue items are solutions, not tasks
- **Conflict clarification**: High-severity conflicts prompt user decision
- Semantic priority calculation per solution (0.0-1.0)
- Parallel/Sequential group assignment for solutions

## Core Guidelines

**⚠️ Data Access Principle**: Issues and queue files can grow very large. To avoid context overflow:

| Operation | Correct | Incorrect |
|-----------|---------|-----------|
| List issues (brief) | `ccw issue list --status planned --brief` | `Read('issues.jsonl')` |
| List queue (brief) | `ccw issue queue --brief` | `Read('queues/*.json')` |
| Read issue details | `ccw issue status <id> --json` | `Read('issues.jsonl')` |
| Get next item | `ccw issue next --json` | `Read('queues/*.json')` |
| Update status | `ccw issue update <id> --status ...` | Direct file edit |
| Sync from queue | `ccw issue update --from-queue` | Direct file edit |
| **Read solution (brief)** | `ccw issue solution <id> --brief` | `Read('solutions/*.jsonl')` |

**Output Options**:
- `--brief`: JSON with minimal fields (id, status, counts)
- `--json`: Full JSON (agent use only)

**Orchestration vs Execution**:
- **Command (orchestrator)**: Use `--brief` for minimal context
- **Agent (executor)**: Fetch full details → `ccw issue status <id> --json`

**ALWAYS** use CLI commands for CRUD operations. **NEVER** read entire `issues.jsonl` or `queues/*.json` directly.



## Usage

```bash
/issue:queue [FLAGS]

# Examples
/issue:queue                      # Form NEW queue from all bound solutions
/issue:queue --queues 3           # Form 3 parallel queues (solutions distributed)
/issue:queue --issue GH-123       # Form queue for specific issue only
/issue:queue --append GH-124      # Append to active queue
/issue:queue --list               # List all queues (history)
/issue:queue --switch QUE-xxx     # Switch active queue
/issue:queue --archive            # Archive completed active queue

# Flags
--queues <n>          Number of parallel queues (default: 1)
--issue <id>          Form queue for specific issue only
--append <id>         Append issue to active queue (don't create new)
--force               Skip active queue check, always create new queue

# CLI subcommands (ccw issue queue ...)
ccw issue queue list                  List all queues with status
ccw issue queue add <issue-id>        Add issue to queue (interactive if active queue exists)
ccw issue queue add <issue-id> -f     Add to new queue without prompt (force)
ccw issue queue merge <src> --queue <target>  Merge source queue into target queue
ccw issue queue switch <queue-id>     Switch active queue
ccw issue queue archive               Archive current queue
ccw issue queue delete <queue-id>     Delete queue from history
```

## Execution Process

```
Phase 1: Solution Loading & Distribution
   ├─ Load issues.jsonl, filter by status='planned' + bound_solution_id
   ├─ Read solutions/{issue-id}.jsonl, find bound solution
   ├─ Extract files_touched from task modification_points
   ├─ Build solution objects array
   └─ If --queues > 1: Partition solutions into N groups (minimize cross-group file conflicts)

Phase 2-4: Agent-Driven Queue Formation (issue-queue-agent)
   ├─ Generate N queue IDs (QUE-xxx-1, QUE-xxx-2, ...)
   ├─ If --queues == 1: Launch single issue-queue-agent
   ├─ If --queues > 1: Launch N issue-queue-agents IN PARALLEL
   ├─ Each agent performs:
   │   ├─ Conflict analysis (5 types via Gemini CLI)
   │   ├─ Build dependency DAG from conflicts
   │   ├─ Calculate semantic priority per solution
   │   └─ Assign execution groups (parallel/sequential)
   └─ Each agent writes: queue JSON + index update (NOT active yet)

Phase 5: Conflict Clarification (if needed)
   ├─ Collect `clarifications` arrays from all agents
   ├─ If clarifications exist → AskUserQuestion (batched)
   ├─ Pass user decisions back to respective agents (resume)
   └─ Agents update queues with resolved conflicts

Phase 6: Status Update & Summary
   ├─ Update issue statuses to 'queued'
   └─ Display new queue summary (N queues)

Phase 7: Active Queue Check & Decision (REQUIRED)
   ├─ Read queue index: ccw issue queue list --brief
   ├─ Get generated queue ID from agent output
   ├─ If NO active queue exists:
   │   ├─ Set generated queue as active_queue_id
   │   ├─ Update index.json
   │   └─ Display: "Queue created and activated"
   │
   └─ If active queue exists with items:
       ├─ Display both queues to user
       ├─ Use AskUserQuestion to prompt:
       │   ├─ "Use new queue (keep existing)" → Set new as active, keep old inactive
       │   ├─ "Merge: add new items to existing" → Merge new → existing, delete new
       │   ├─ "Merge: add existing items to new" → Merge existing → new, archive old
       │   └─ "Cancel" → Delete new queue, keep existing active
       └─ Execute chosen action
```

## Implementation

### Phase 1: Solution Loading & Distribution

**Data Loading:**
- Use `ccw issue list --status planned --brief` to get planned issues with `bound_solution_id`
- If no planned issues found → display message, suggest `/issue:plan`

**Solution Brief Loading** (for each planned issue):
```bash
ccw issue solution <issue-id> --brief
# Returns: [{ solution_id, is_bound, task_count, files_touched[] }]
```

**Build Solution Objects:**
```json
{
  "issue_id": "ISS-xxx",
  "solution_id": "SOL-ISS-xxx-1",
  "task_count": 3,
  "files_touched": ["src/auth.ts", "src/utils.ts"],
  "priority": "medium"
}
```

**Multi-Queue Distribution** (if `--queues > 1`):
- Use `files_touched` from brief output for partitioning
- Group solutions with overlapping files into same queue

**Output:** Array of solution objects (or N arrays if multi-queue)

### Phase 2-4: Agent-Driven Queue Formation

**Generate Queue IDs** (command layer, pass to agent):
```javascript
const timestamp = new Date().toISOString().replace(/[-:T]/g, '').slice(0, 14);
const numQueues = args.queues || 1;
const queueIds = numQueues === 1
  ? [`QUE-${timestamp}`]
  : Array.from({length: numQueues}, (_, i) => `QUE-${timestamp}-${i + 1}`);
```

**Agent Prompt** (same for each queue, with assigned solutions):
```
## Order Solutions into Execution Queue

**Queue ID**: ${queueId}
**Solutions**: ${solutions.length} from ${issues.length} issues
**Project Root**: ${cwd}
**Queue Index**: ${queueIndex} of ${numQueues}

### Input
${JSON.stringify(solutions)}
// Each object: { issue_id, solution_id, task_count, files_touched[], priority }

### Workflow

Step 1: Build dependency graph from solutions (nodes=solutions, edges=file conflicts via files_touched)
Step 2: Use Gemini CLI for conflict analysis (5 types: file, API, data, dependency, architecture)
Step 3: For high-severity conflicts without clear resolution → add to `clarifications`
Step 4: Calculate semantic priority (base from issue priority + task_count boost)
Step 5: Assign execution groups: P* (parallel, no overlaps) / S* (sequential, shared files)
Step 6: Write queue JSON + update index

### Output Requirements

**Write files** (exactly 2):
- `.workflow/issues/queues/${queueId}.json` - Full queue with solutions, conflicts, groups
- `.workflow/issues/queues/index.json` - Update with new queue entry

**Return JSON**:
\`\`\`json
{
  "queue_id": "${queueId}",
  "total_solutions": N,
  "total_tasks": N,
  "execution_groups": [{"id": "P1", "type": "parallel", "count": N}],
  "issues_queued": ["ISS-xxx"],
  "clarifications": [{"conflict_id": "CFT-1", "question": "...", "options": [...]}]
}
\`\`\`

### Rules
- Solution granularity (NOT individual tasks)
- Queue Item ID format: S-1, S-2, S-3, ...
- Use provided Queue ID (do NOT generate new)
- `clarifications` only present if high-severity unresolved conflicts exist
- Use `files_touched` from input (already extracted by orchestrator)

### Done Criteria
- [ ] Queue JSON written with all solutions ordered
- [ ] Index updated with active_queue_id
- [ ] No circular dependencies
- [ ] Parallel groups have no file overlaps
- [ ] Return JSON matches required shape
```

**Launch Agents** (parallel if multi-queue):
```javascript
const numQueues = args.queues || 1;

if (numQueues === 1) {
  // Single queue: single agent call
  const result = Task(
    subagent_type="issue-queue-agent",
    prompt=buildPrompt(queueIds[0], solutions),
    description=`Order ${solutions.length} solutions`
  );
} else {
  // Multi-queue: parallel agent calls (single message with N Task calls)
  const agentPromises = solutionGroups.map((group, i) =>
    Task(
      subagent_type="issue-queue-agent",
      prompt=buildPrompt(queueIds[i], group, i + 1, numQueues),
      description=`Queue ${i + 1}/${numQueues}: ${group.length} solutions`
    )
  );
  // All agents launched in parallel via single message with multiple Task tool calls
}
```

**Multi-Queue Index Update:**
- First queue sets `active_queue_id`
- All queues added to `queues` array with `queue_group` field linking them

### Phase 5: Conflict Clarification

**Collect Agent Results** (multi-queue):
```javascript
// Collect clarifications from all agents
const allClarifications = results.flatMap((r, i) =>
  (r.clarifications || []).map(c => ({ ...c, queue_id: queueIds[i], agent_id: agentIds[i] }))
);
```

**Check Agent Return:**
- Parse agent result JSON (or all results if multi-queue)
- If any `clarifications` array exists and non-empty → user decision required

**Clarification Flow:**
```javascript
if (allClarifications.length > 0) {
  for (const clarification of allClarifications) {
    // Present to user via AskUserQuestion
    const answer = AskUserQuestion({
      questions: [{
        question: `[${clarification.queue_id}] ${clarification.question}`,
        header: clarification.conflict_id,
        options: clarification.options,
        multiSelect: false
      }]
    });

    // Resume respective agent with user decision
    Task(
      subagent_type="issue-queue-agent",
      resume=clarification.agent_id,
      prompt=`Conflict ${clarification.conflict_id} resolved: ${answer.selected}`
    );
  }
}
```

### Phase 6: Status Update & Summary

**Status Update** (MUST use CLI command, NOT direct file operations):

```bash
# Option 1: Batch update from queue (recommended)
ccw issue update --from-queue [queue-id] --json
ccw issue update --from-queue --json              # Use active queue
ccw issue update --from-queue QUE-xxx --json      # Use specific queue

# Option 2: Individual issue update
ccw issue update <issue-id> --status queued
```

**⚠️ IMPORTANT**: Do NOT directly modify `issues.jsonl`. Always use CLI command to ensure proper validation and history tracking.

**Output** (JSON):
```json
{
  "success": true,
  "queue_id": "QUE-xxx",
  "queued": ["ISS-001", "ISS-002"],
  "queued_count": 2,
  "unplanned": ["ISS-003"],
  "unplanned_count": 1
}
```

**Behavior:**
- Updates issues in queue to `status: 'queued'` (skips already queued/executing/completed)
- Identifies planned issues with `bound_solution_id` NOT in queue → `unplanned` array
- Optional `queue-id`: defaults to active queue if omitted

**Summary Output:**
- Display queue ID, solution count, task count
- Show unplanned issues (planned but NOT in queue)
- Show next step: `/issue:execute`

### Phase 7: Active Queue Check & Decision

**After agent completes Phase 1-6, check for active queue:**

```bash
ccw issue queue list --brief
```

**Decision:**
- If `active_queue_id` is null → `ccw issue queue switch <new-queue-id>` (activate new queue)
- If active queue exists → Use **AskUserQuestion** to prompt user

**AskUserQuestion:**
```javascript
AskUserQuestion({
  questions: [{
    question: "Active queue exists. How would you like to proceed?",
    header: "Queue Action",
    options: [
      { label: "Merge into existing queue", description: "Add new items to active queue, delete new queue" },
      { label: "Use new queue", description: "Switch to new queue, keep existing in history" },
      { label: "Cancel", description: "Delete new queue, keep existing active" }
    ],
    multiSelect: false
  }]
})
```

**Action Commands:**

| User Choice | Commands |
|-------------|----------|
| **Merge into existing** | `ccw issue queue merge <new-queue-id> --queue <active-queue-id>` then `ccw issue queue delete <new-queue-id>` |
| **Use new queue** | `ccw issue queue switch <new-queue-id>` |
| **Cancel** | `ccw issue queue delete <new-queue-id>` |

## Storage Structure (Queue History)

```
.workflow/issues/
├── issues.jsonl              # All issues (one per line)
├── queues/                   # Queue history directory
│   ├── index.json            # Queue index (active + history)
│   ├── {queue-id}.json       # Individual queue files
│   └── ...
└── solutions/
    ├── {issue-id}.jsonl      # Solutions for issue
    └── ...
```

### Queue Index Schema

```json
{
  "active_queue_id": "QUE-20251227-143000",
  "active_queue_group": "QGR-20251227-143000",
  "queues": [
    {
      "id": "QUE-20251227-143000-1",
      "queue_group": "QGR-20251227-143000",
      "queue_index": 1,
      "total_queues": 3,
      "status": "active",
      "issue_ids": ["ISS-xxx", "ISS-yyy"],
      "total_solutions": 3,
      "completed_solutions": 1,
      "created_at": "2025-12-27T14:30:00Z"
    }
  ]
}
```

**Multi-Queue Fields:**
- `queue_group`: Links queues created in same batch (format: `QGR-{timestamp}`)
- `queue_index`: Position in group (1-based)
- `total_queues`: Total queues in group
- `active_queue_group`: Current active group (for multi-queue execution)

**Note**: Queue file schema is produced by `issue-queue-agent`. See agent documentation for details.
## Error Handling

| Error | Resolution |
|-------|------------|
| No bound solutions | Display message, suggest /issue:plan |
| Circular dependency | List cycles, abort queue formation |
| High-severity conflict | Return `clarifications`, prompt user decision |
| User cancels clarification | Abort queue formation |
| **index.json not updated** | Auto-fix: Set active_queue_id to new queue |
| **Queue file missing solutions** | Abort with error, agent must regenerate |
| **User cancels queue add** | Display message, return without changes |
| **Merge with empty source** | Skip merge, display warning |
| **All items duplicate** | Skip merge, display "All items already exist" |

## Quality Checklist

Before completing, verify:

- [ ] All planned issues with `bound_solution_id` are included
- [ ] Queue JSON written to `queues/{queue-id}.json` (N files if multi-queue)
- [ ] Index updated in `queues/index.json` with `active_queue_id`
- [ ] Multi-queue: All queues share same `queue_group`
- [ ] No circular dependencies in solution DAG
- [ ] All conflicts resolved (auto or via user clarification)
- [ ] Parallel groups have no file overlaps
- [ ] Cross-queue: No file overlaps between queues
- [ ] Issue statuses updated to `queued`

## Related Commands

- `/issue:execute` - Execute queue with codex
- `ccw issue queue list` - View current queue
- `ccw issue update --from-queue [queue-id]` - Sync issue statuses from queue
