Four patterns. One graph.
Each pattern states when to use it and what it costs. Combine them in the 5-beat loop, or use any one standalone.
Graph triage
Reconcile what you declared against what git says. Output is High / Watch / Noise — never a wall of text. Stops in under 5k tokens when there's nothing actionable.
Diamond execution
Fan out parallel workers in isolated git worktrees, dedupe with deterministic code (zero tokens), then synthesize one report. Collapses 15 minutes of sequential waiting into ~15 seconds.
Fresh-context verify
A new agent invocation gets only the artifact, the contract, and HEAD — never the worker's transcript. Correctness, currentness, compiler anchor. Max 3 attempts, then a human.
Worktree isolate
Every file-writing node gets its own git worktree. Two writers never share a checkout, so multi-agent fleets can't overwrite each other.