Overwrites an object in place, which on a versioned bucket is what creates a new
version. Not `uploadFiles`, which renames rather than overwrites on a name
clash, and with upsert set so storage does not reject the path as a conflict.
The panel's own preview URL is cached for a week against the path, so the
replace invalidates it alongside the version list; without that the panel keeps
rendering the bytes from before. A rejected write reports why where storage
answers with a bare status and no message.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N3euXsz25sTybsGTcxCFfn
Claude
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