nw-execute

# NW-EXECUTE: Atomic Task Execution

**Wave**: EXECUTION_WAVE | **Agent**: Dispatched agent (specified by caller)

## Overview

Dispatch one unit of DELIVER work to an agent: a single roadmap step. `/nw-execute` extracts the step from `roadmap.json` and dispatches it for the 3-phase TDD canon; the agent appends phase events to `execution-log.json`.

## Syntax

```
/nw-execute @{agent} "{feature-id}" "{step-id}"
```

## Context Files Required

- `docs/feature/{feature-id}/deliver/roadmap.json` — Orchestrator reads once, extracts step context
- `docs/feature/{feature-id}/deliver/execution-log.json` — Agent appends only (never reads)

## Rigor Profile Integration

Before dispatching the agent, read rigor config from `.nwave/des-config.json` (key: `rigor`). If absent, use standard defaults.

- **`agent_model`**: Pass as `model` parameter to Agent tool. If `"inherit"`, omit `model` (inherits from session).
- **`tdd_phases`**: Modify the TDD_PHASES section in the DES template to match the configured phases. The 3-phase canon (ADR-025) is `[RED, GREEN, COMMIT]`; the lean variant is `[RED, GREEN]`. Legacy 5-phase contract (`[PREPARE, RED_ACCEPTANCE, RED_UNIT, GREEN, COMMIT]`) and its lean variant (`[RED_UNIT, GREEN]`) remain supported for audit-log replay of pre-2026-05-07 commits. Remove omitted phases' instructions from the template.
- **`refactor_pass`**: If `false`, skip COMMIT phase refactoring instructions.

## Dispatcher Workflow

1. **Parse Parameters** — Extract agent name, feature ID, and step ID from invocation. Gate: all three parameters present and non-empty.
2. **Load Rigor Profile** — Read `.nwave/des-config.json` key `rigor` (default: standard if absent). Gate: config loaded or default applied.
3. **Validate Context Files** — Confirm `roadmap.json` and `execution-log.json` exist under `docs/feature/{feature-id}/deliver/`. Gate: both files present; report path-not-found if missing.
4. **Extract Step Context** — Grep roadmap for `step_id: "{step-id}"` with ~50 lines context. Gate: step found; report available step IDs if missing.
5. **Invoke Agent** — Call Agent tool with DES template below, applying rigor model and phases from step 2. Gate: Agent tool called, not executed inline.

## Agent Invocation

@{agent}

Use this DES template verbatim. Fill `{placeholders}` from roadmap. Without DES markers, hooks cannot validate.

```
<!-- DES-VALIDATION : required -->
<!-- DES-PROJECT-ID : {feature-id} -->
<!-- DES-STEP-ID : {step-id} -->

# DES_METADATA
Step: {step-id}
Feature: {feature-id}
Command: /nw-execute

# AGENT_IDENTITY
Agent: {agent-name}

# SKILL_LOADING
Before starting TDD phases, read your skill files for methodology guidance.
Skills path: ~/.claude/skills/nw-{skill-name}/SKILL.md
Always load before RED: tdd-methodology.md, quality-framework.md (3-phase canon, ADR-025) — legacy 5-phase logs reference loading at PREPARE.
Load on-demand per phase as specified in your Skill Loading Strategy table.

# TASK_CONTEXT
{step context from roadmap - name|criteria|test_file|scenario_name|implementation_notes|deps|files_to_modify (per nWave/templates/roadmap-schema.json)}

# DESIGN_CONTEXT
{Summary of architectural decisions relevant to this step, extracted by the orchestrator from docs/product/architecture/brief.md and wave-decisions.md. Include: component structure, dependency boundaries, technology choices, and any design constraints that affect implementation. If no design artifacts exist, write "No design artifacts available — use project conventions."}

# TDD_PHASES
3-phase canon (ADR-025, 2026-05-07). Execute in order:

1. RED - Activate the pre-authored acceptance test (PRIMARY TBU DEFENSE); write PBT unit tests ONLY if the AT cannot reach GREEN without them.
   AT activation: If TASK_CONTEXT includes test_file, locate it and remove the @skip/@ignore/@pending/xit/.skip/[Ignore] marker from the target scenario (the AT scaffold was authored by DISTILL — DELIVER does NOT re-author ATs). Run it — must fail for business logic reason (not import/syntax error). Fail-for-right-reason gate: collected ≥ 1, failures ≥ 1, no collection errors, semantic AssertionError / expected-exception-not-thrown.
   PORT-TO-PORT PRINCIPLE: The acceptance test exercises the scenario through
   the driving port (application service, orchestrator, CLI handler, API controller),
   not a decomposed helper or internal class. A correctly-written port-to-port test
   makes TBU structurally impossible — if a new function were missing or unwired,
   THIS test stays RED. That is the entire point: GREEN is unreachable without wiring.
   Litmus test: "If I delete the call-site that wires the new code, does this test fail?"
   If no → the test is at the wrong level. Stop and flag to orchestrator (DISTILL re-author needed).
   Conditional unit-test authoring: write PBT unit tests (or integration tests for adapter/infrastructure code — adapters use real infrastructure, never mocked unit tests) ONLY when the AT requires them to reach GREEN. If the AT can pass via direct minimal implementation, skip unit-test authoring inside RED.

2. GREEN - Minimal code to pass AT + any unit tests authored in RED.
   After GREEN: run FULL test suite. If all pass, proceed to COMMIT immediately.
   Smell test: if any new function is only called from test code, your acceptance
   test is at the wrong abstraction level — stop and flag.
   Never move to new task or stop without committing green code.

3. COMMIT - Stage and commit with conventional message.
   Include git trailer: `Step-Id: {step-id}` (required for DES verification)
   Example:
   ```
   feat(feature-id): implement feature X

   Step-Id: 02-01
   ```

LEGACY 5-PHASE CONTRACT (ADR-024 era, pre-2026-05-07): PREPARE → RED_ACCEPTANCE → RED_UNIT → GREEN → COMMIT. Preserved for audit-log replay only — new work uses the 3-phase canon above. Audit-log entries referencing RED_ACCEPTANCE/RED_UNIT/PREPARE represent merged sub-steps now folded into RED.

# QUALITY_GATES
- All tests pass