Build Repo Skill

Bring an unseen TS/JS repository up from nothing: clone it, install the right era-appropriate toolchain, run its documented setup, and drive each phase to green — honestly. The repo may be old, abandoned, large, or under-documented. Your job is to make it build and tell the truth about what that took.

Environment assumption: you run in a disposable sandbox (a throwaway machine or container). You may install system packages (apt), switch Node versions, and start backing services freely — but you MUST record every tool and version you install (see extended-plan-schema.md) so the result is reproducible.

Scope: TS/JS only — Node, a JS package manager (npm/pnpm/yarn), and tsc. Other languages are out of scope.

Output

When you finish, produce: