scope-task（范围任务）

Scope Task

Overview

This skill researches and scopes a single new task, then inserts it into an existing ROADMAP.md at the specified position. It follows the same discovery depth as project-init — web research, self-reflection, and user interview — but focused on one task rather than an entire project. The output is a properly formatted action item inserted into the roadmap, ready for do-task to implement.

Workflow

Step 1: Parse Arguments

Extract two pieces from the user's input:

• Task ID — numeric identifier in <phase>.<item> format (e.g., 2.5, 3.3)
• Task Title — the descriptive title following the ID (e.g., "Integrate Research into SPEC.md")

If either is missing or malformed, ask the user to provide the full invocation: /scope-task <phase.item> <Task Title>.

Step 2: Load Project Context

Read the following files from the current working directory (check docs/ subdirectory first, then project root):

1. ROADMAP.md — to understand existing phases, task numbering, and what has already been scoped
2. SPEC.md — to understand the project's architecture, tech stack, data models, and key decisions

If ROADMAP.md does not exist, inform the user and stop — this skill requires an existing roadmap to insert into.

Validate the task ID:

• The phase number must correspond to an existing phase in the roadmap (Phases 1-4 for actionable tasks; Phase 5 for future directions)
• The item number must not already exist — scope-task always creates new insertions
• If the ID conflicts with an existing task, list nearby IDs and ask the user to pick an available slot

Step 3: Research

Conduct targeted research using WebSearch to investigate:

• Best practices — established patterns and approaches for this type of task given the project's tech stack
• Similar implementations — how other projects have solved this problem
• Libraries and tools — relevant packages, APIs, or utilities that could aid implementation
• Trade-offs — alternative approaches with their pros and cons
• Pitfalls — common mistakes and gotchas specific to this task

Keep research focused on the single task — not the broader project. Use SPEC.md context to make searches specific to the project's stack and architecture.

Step 4: Self-Reflection

Before interviewing the user, pause and reason through:

• How research findings connect to the project's existing architecture (from SPEC.md)
• What the task's requirements should be, based on research
• Gaps in understanding that only the user can fill
• Potential impacts on other roadmap tasks
• Scope boundaries — what this task should and should not include
• Questions where the answer is NOT obvious from SPEC.md, ROADMAP.md, or research

Step 5: Interview

Use AskUserQuestion to clarify unresolved items from Steps 2-4. Topics may include:

• Technical implementation choices surfaced by research
• Scope boundaries — what exactly should be in vs. out
• Integration points with existing or planned roadmap tasks
• Acceptance criteria the user has in mind
• Priority or ordering relative to neighboring tasks

Rules for the interview:

• Do NOT ask questions whose answers are obvious from SPEC.md, ROADMAP.md, or research
• Do NOT re-ask information already present in the project documentation
• Each round should surface genuinely new information
• Keep it focused — this is one task, not a full project discovery
• 1-2 rounds of questions is typical; go deeper only if the task is genuinely complex

Step 6: Write the Action Item

Compose the new task following the canonical roadmap format.

For Phases 1-4, use exactly 3 subsections:

### <phase>.<item> <Task Title>

**Description**: What this task is and why it matters. Connect it to the project's goals and architecture.

**Requirements**:
- [ ] Concrete deliverable 1
- [ ] Concrete deliverable 2
- [ ] ...

**Implementation Notes**: Technical guidance, references to specific libraries or APIs discovered during research, trade-offs considered, gotchas to watch for. Reference relevant parts of SPEC.md where helpful.

For Phase 5 (Future), use the alternative format:

### <phase>.<item> <Task Title>

**Description**: What this direction is about.

**Features**:
- Potential feature or capability 1
- Potential feature or capability 2

**Rationale**: Why this direction is worth pursuing.

Quality guidelines for the action item:

• Requirements should be concrete, testable, and individually checkable
• Implementation Notes should contain genuinely useful technical guidance drawn from research — not generic advice
• Description should clearly explain *why* this task matters in the context of the project
• Target 4-10 requirement items depending on task complexity
• Reference specific libraries, APIs, or patterns by name when applicable

Step 7: Insert into ROADMAP.md

Insert the new action item into ROADMAP.md at the correct position:

• Place it after the task with the preceding item number (e.g., 2.5 goes after 2.4)
• If inserting at the end of a phase (e.g., 2.5 when the last task is 2.4), place it before the next phase heading
• If inserting between existing tasks (e.g., 2.5 between 2.4 and 2.6), place it in numerical order
• Do NOT renumber existing tasks — the new ID fills a gap or extends the sequence
• Preserve all existing content and formatting in the roadmap

Use the Edit tool to insert the new task. Verify the insertion by reading back the modified section of ROADMAP.md.

Step 8: Summary

After insertion, present a brief summary to the user:

• The task ID and title
• A one-line description of what was scoped
• The number of requirements defined
• Any notable trade-offs or decisions made during scoping

The task is now ready for /do-task <id>.