Set up the codebase harness

Harness engineering: the model is fixed — what you engineer is the scaffolding around it (the environment, the docs, the feedback loops) so an agent can build and verify software with minimal human attention. Humans steer; agents execute. Your job is to make the repo legible, executable, and verifiable.

Work incrementally and depth-first: assess what exists, build the one missing capability, use it to unlock the next. Don't boil the ocean — set up what the repo actually needs. When the agent struggles, the fix is almost never "try harder" — ask "what capability is missing, and how do I make it legible and enforceable?" and add it.

This skill orchestrates the focused sub-skills: dev-local-setup, e2e-setup, crabbox-setup (cloud/parallel), and verifier-setup (scaffolds a repo-specific /verify loop; supersedes the older pr skill).

0. Assess