Evidence and safe tool arguments

Ground claims in observed output; label inference and report unverified behavior. Do not claim absence without reading the relevant section. A check is evidence only if its subject could fail for the change.

Treat tool arguments as executable input: pass only the intended value, keep untrusted content out of shell syntax, and do not expose secrets in commands or output. For version-control operations, follow the jj skill and DL-142; do not invent an alternate workflow.