Multi-agent codebase audit

Review a whole repository with a fleet of agents. The hard constraint that shapes everything: a codebase doesn't fit in one agent's context — so you can't just "review the repo." You partition → fan out → reduce: split the repo into slices that each fit a context, audit each slice in its own subagent in parallel, then reconcile across slices to catch what no single slice can see.

This is the whole-repo sibling of dual-agent-review (which reviews a diff). It reuses that skill's triage → fix → report machinery — see it for those steps; this skill adds the map/partition/reduce layer on top. Partitioning heuristics, the auditor/critic prompts, and the coverage-ledger template live in reference/partition-and-prompts.md.

When to use (and not)