What problem does it solve? Make App projects fail at publish time when workspace manifests, build outputs, or Service entrypoints drift from the platform image contract, producing errors like "Cannot find module '/app/apps/service/dist/server.js'". This Skill enforces the fixed runtime baseline so generated or refactored Apps build and start correctly in Docker/K8s environments. ## Core Features & Use Cases - Workspace and package manager contract enforcement: Verifies apps/package.json, apps/pnpm-workspace.yaml, and child manifests declare Node.js 22.20.0, Corepack 0.34.0, and pnpm 10.20.0, with all commands run through Corepack. - Service runtime and build contract checks: Ensures apps/service compiles src/server.ts to dist/server.js, starts with node dist/server.js on port 3000, and includes a contract test protecting the runtime entry. - Publish-readiness gates: Defines check:publish and verify:publish scripts covering runtime version checks, builds, auth and permission audits, gateway-mode contract tests, and artifact verification before makecli app deploy. - Use Case: When a deployed Make App crashes with a missing dist/server.js error, use this Skill to diagnose whether the build never ran, tsconfig emitted elsewhere, or the start script points at a file the build does not create, then fix the build/start contract. ## Quick Start Use the make-app-runtime skill to audit my Make App workspace and fix the publish-readiness contracts before deployment.