go

Go — Build It

CRITICAL: Run HARNESS_DIR=$(epic-harness path) first. NEVER use .harness/ in the project directory.

Execution Modes

This skill has 3 internal modes that run sequentially:

1. go:plan — Decompose requirements into ordered, parallelizable tasks
2. go:build — Execute each task using TDD (Red→Green→Refactor)
3. go:integrate — Merge results, verify all ACs, fix failures

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Mode: go:plan (Plan)

Decompose the spec into an execution plan.

Process

1. Load the spec:

   ls -t $HARNESS_DIR/specs/SPEC-*.md | head -1
   

   Read the file. Confirm frontmatter has status: approved. If not, invoke the spec skill first.

2. Survey the codebase: Identify relevant files, modules, patterns for each requirement.

3. Decompose: Map each Requirement → one or more Tasks. Every task must reference its source requirement:

   Task 1: [description] — satisfies: R1 — depends on: none — modifies: [file list]
   Task 2: [description] — satisfies: R2 — depends on: Task 1 — modifies: [file list]
   Task 3: [description] — satisfies: R1,R2 (integration) — depends on: Task 1,2 — modifies: [file list]
   

4. Conflict analysis:

   • Tasks modifying same files → serialize or use worktree isolation
   • Tasks modifying different files → safe to parallelize
   • Don't plan more than 8 tasks — if bigger, split into phases
   • Include "verify integration" as final task if 3+ tasks

5. Show the plan. Get user confirmation (or auto-proceed if in /orbit).

6. Identify risks: For each task, list potential failure modes:

   ### Risks
   - {risk}: {mitigation}
   

7. Create feature branch (standalone invocation only — /orbit handles this in Step 3):

   git checkout -b feature/{goal_slug}
   

Execution Order Format

- Batch 1 (parallel): Task 1, Task 3
- Batch 2 (sequential): Task 2

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Mode: go:build (Execute TDD)

For each task, follow this TDD cycle:

Builder Protocol