minimal-implementation

name	minimal-implementation
description	Run before implementation to record minimal necessary approach using Harness Decision Ladder.

Minimal Implementation Check

Run in PLANNED, before IMPLEMENTING. Do not implement code.

Read .harness/current-task.yaml, requirements, invariants, design/plan, and dependency manifest. Answer ladder in order:

1. Does capability need to exist?
2. Does equivalent repository capability exist?
3. Can stdlib solve it?
4. Can platform-native capability solve it?
5. Can installed dependency solve it?
6. Can small local implementation solve it?
7. Only then choose new abstraction.

Search repository before creation. First found short-circuits later checks: write checked: false, result: skipped. Requirement/invariant-required security, audit, compatibility, migration, accessibility, NFR, and trust-boundary complexity remains necessary.

Write YAML matching schemas/minimal-implementation.schema.json, then run:

harness check minimal --file /path/to/decision.yaml

Do not transition to IMPLEMENTING until command succeeds.