4 tagged matter, measured the same way as everything else here.
Agent Claude Code
Implements tests from a guard specification and proves each guard bites by removing the named production line. Use for regression guards, contract tests, table tests, and vitest cases. Requires a caller-supplied specification — it does not decide what to guard.
Agent Claude Code
Adversarial read-only defect hunt over a named area — wire handling, resource leaks, concurrency, silently dropped events, unwired seams. Produces ranked candidates with a reproduction path. It finds and argues; it never fixes.
Agent Claude Code
Scoped implementation work whose correctness a test or lint run can prove. Use for Go/Svelte changes inside named files with a stated acceptance command. NOT for composition-root wiring, wire formats, REST/WS contract semantics, Matter parity constants, or auth/secret code.