Optionalerrorsv2.0.0-beta.2 P1: per-file write errors collected during apply. Only populated when the apply phase encountered errors (so happy-path responses stay narrow).
v2.0.0-beta.2 P1: when true, the apply pass aborted partway through.
files_updated only contains files that DID write successfully. Files
in errors (if present) failed mid-write — caller should retry just
those and verify state. Always false on dry_run.
Envelope returned by replaceInNotes.
partial: truesignals that some writes failed mid-apply — checkerrorsfor the per-file reasons. Always false on dry-run.