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english/.opencode/skills/fix/references/task-orchestration.md
2026-04-12 01:06:31 +07:00

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# Task Orchestration
Native Claude Task tools for tracking and coordinating fix workflows.
**Skill:** Activate `ck:project-management` for advanced task orchestration — provides hydration (plan checkboxes → Tasks), sync-back (Tasks → plan checkboxes), cross-session resume, and progress tracking patterns.
**Tool Availability:** `TaskCreate`, `TaskUpdate`, `TaskGet`, `TaskList` are **CLI-only** — disabled in VSCode extension (`isTTY` check). If these tools error, use `TodoWrite` for progress tracking instead. Fix workflow remains fully functional — Tasks add visibility and coordination, not core functionality.
## When to Use Tasks
| Complexity | Use Tasks? | Reason |
|-----------|-----------|--------|
| Simple/Quick | No | < 3 steps, overhead exceeds benefit |
| Moderate (Standard) | Yes | 6 steps, multi-subagent coordination |
| Complex (Deep) | Yes | 9 steps, dependency chains, parallel agents |
| Parallel | Yes | Multiple independent issue trees |
## Task Tools
- `TaskCreate(subject, description, activeForm, metadata)` - Create task
- `TaskUpdate(taskId, status, addBlockedBy, addBlocks)` - Update status/deps
- `TaskGet(taskId)` - Get full task details
- `TaskList()` - List all tasks with status
**Lifecycle:** `pending` `in_progress` `completed`
## Standard Workflow Tasks (6 phases)
Create all tasks upfront, then work through them:
```
T1 = TaskCreate(subject="Scout codebase", activeForm="Scouting codebase", metadata={step: 1, phase: "investigate"})
T2 = TaskCreate(subject="Diagnose root cause", activeForm="Diagnosing root cause", metadata={step: 2, phase: "investigate"})
T3 = TaskCreate(subject="Implement fix", activeForm="Implementing fix", metadata={step: 3, phase: "implement"}, addBlockedBy=[T1, T2])
T4 = TaskCreate(subject="Verify + prevent", activeForm="Verifying fix", metadata={step: 4, phase: "verify"}, addBlockedBy=[T3])
T5 = TaskCreate(subject="Code review", activeForm="Reviewing code", metadata={step: 5, phase: "verify"}, addBlockedBy=[T4])
T6 = TaskCreate(subject="Finalize", activeForm="Finalizing", metadata={step: 6, phase: "finalize"}, addBlockedBy=[T5])
```
Update as work progresses:
```
TaskUpdate(taskId=T1, status="in_progress")
// ... scout codebase ...
TaskUpdate(taskId=T1, status="completed")
// T3 auto-unblocks when T1 + T2 complete
```
## Deep Workflow Tasks (9 phases)
Steps 1+2+3 run in parallel (scout + diagnose + research).
```
T1 = TaskCreate(subject="Scout codebase", metadata={step: 1, phase: "investigate"})
T2 = TaskCreate(subject="Diagnose root cause", metadata={step: 2, phase: "investigate"})
T3 = TaskCreate(subject="Research solutions", metadata={step: 3, phase: "investigate"})
T4 = TaskCreate(subject="Brainstorm approaches", metadata={step: 4, phase: "design"}, addBlockedBy=[T1, T2, T3])
T5 = TaskCreate(subject="Create implementation plan", metadata={step: 5, phase: "design"}, addBlockedBy=[T4])
T6 = TaskCreate(subject="Implement fix", metadata={step: 6, phase: "implement"}, addBlockedBy=[T5])
T7 = TaskCreate(subject="Verify + prevent", metadata={step: 7, phase: "verify"}, addBlockedBy=[T6])
T8 = TaskCreate(subject="Code review", metadata={step: 8, phase: "verify"}, addBlockedBy=[T7])
T9 = TaskCreate(subject="Finalize & docs", metadata={step: 9, phase: "finalize"}, addBlockedBy=[T8])
```
**Note:** Steps 1, 2, and 3 run in parallel (scout + diagnose + research simultaneously).
## Parallel Issue Coordination
For 2+ independent issues, create separate task trees per issue:
```
// Issue A tree
TaskCreate(subject="[Issue A] Scout", metadata={issue: "A", step: 1})
TaskCreate(subject="[Issue A] Diagnose", metadata={issue: "A", step: 2})
TaskCreate(subject="[Issue A] Fix", metadata={issue: "A", step: 3}, addBlockedBy=[A-step1, A-step2])
TaskCreate(subject="[Issue A] Verify", metadata={issue: "A", step: 4}, addBlockedBy=[A-step3])
// Issue B tree
TaskCreate(subject="[Issue B] Scout", metadata={issue: "B", step: 1})
TaskCreate(subject="[Issue B] Diagnose", metadata={issue: "B", step: 2})
TaskCreate(subject="[Issue B] Fix", metadata={issue: "B", step: 3}, addBlockedBy=[B-step1, B-step2])
TaskCreate(subject="[Issue B] Verify", metadata={issue: "B", step: 4}, addBlockedBy=[B-step3])
// Final shared task
TaskCreate(subject="Integration verify", addBlockedBy=[A-step4, B-step4])
```
Spawn `fullstack-developer` subagents per issue tree. Each agent:
1. Claims tasks via `TaskUpdate(status="in_progress")`
2. Completes tasks via `TaskUpdate(status="completed")`
3. Blocked tasks auto-unblock when dependencies resolve
## Subagent Task Assignment
Assign tasks to subagents via `owner` field:
```
TaskUpdate(taskId=taskA, owner="agent-scout")
TaskUpdate(taskId=taskB, owner="agent-diagnose")
```
Check available work: `TaskList()` filter by `status=pending`, `blockedBy=[]`, `owner=null`
## Rules
- Create tasks BEFORE starting work (upfront planning)
- Only 1 task `in_progress` per agent at a time
- Mark complete IMMEDIATELY after finishing (don't batch)
- Use `metadata` for filtering: `{step, phase, issue, severity}`
- If task fails keep `in_progress`, create subtask for blocker
- Skip Tasks entirely for Quick workflow (< 3 steps)