Codex gate found two SILENT defects, fixed:
1) Failed-steer RETRY re-uploaded the same File objects (uploadPendingFiles ran
again with clearPending:false). Added _steerUploadCache keyed by ownerSid +
file signature so a retry with the same staged set reuses the uploaded paths;
invalidated when the staged set changes (signature miss) or on accepted steer.
2) Accepted steer cleared ALL S.pendingFiles, dropping files staged during the
upload/API await. Now removes ONLY the delivered snapshot by object identity,
preserving newly staged files.
(The owner-session draft is still cleared on accepted steer — clearing the
delivered session's draft is correct even after a mid-upload switch; the existing
test asserts this.) Tests updated for the identity-based removal + new
cache/dedup guard. 69 steer/composer tests pass, node --check clean.
nesquena-hermes
c78d5083ad
