Steering (submitting mid-stream) dropped any pending composer attachments. Now the
pending files are uploaded before the /steer payload is sent, the uploaded file
paths are appended to the steer text so the active agent can inspect them with
tools, file chips stay staged if the steer fails (so nothing is lost), and
file-only busy submissions are handled.
Contributor stage; gate-pass. Co-authored-by: ruizanthony <ruizanthony@users.noreply.github.com>
Codex found a SILENT edge in the payload-signature fix: a live browser File
JSON-serializes to {} when the draft is POSTed to the server, so a text+attachment
send's suppression signature (computed from the rich File) never matched the
restored server draft (files:[{}]) — suppression cleared and the just-sent tail
could repopulate for the attachment case. Fix: _composerDraftFilesForPersist()
canonicalizes files to a stable serializable shape (name/path/size/type/lastModified)
used at BOTH _saveComposerDraft/_saveComposerDraftNow (persist) AND
_composerDraftPayloadSignature (sign), so the sent signature matches the
round-tripped server draft. Regression test self-demonstrates lossy-mismatch vs
canon-match.
Co-authored-by: ruizanthony <ruizanthony@users.noreply.github.com>
nesquena-hermes