Phase 2 skill. Use when designing the database schema, ORM models, and migration scripts from the PRD entities + API contract — produces schema files, ORM models, and reversible migrations consumed by api-implementation.
$npx -y skills add luckyonetwothree/harness-all --skill data-layerInstalls into the current project.
Run `npx skills use "https://github.com/luckyonetwothree/harness-all" --skill "luckyonetwothree/harness-all/data-layer"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/luckyonetwothree/harness-all" that are relevant to the current task. Run `npx skills add "https://github.com/luckyonetwothree/harness-all"` and select the relevant skills, then follow their instructions.