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https://github.com/diegosouzapw/OmniRoute.git
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bc6cd2a806
Root cause: the STREAMING branch of AntigravityExecutor.executeOnce() had no
!response.ok check at all — it unconditionally wrapped the upstream response
body in a pass-through TransformStream, unlike the sibling non-streaming
branch which already built a sanitized error via buildAntigravityUpstreamError.
When Google's 403 error body was binary/non-UTF8 (observed: gzip-magic-byte
payloads), those raw bytes were forwarded verbatim, corrupting the
client-visible error message ('[ERROR] [403]: <control-byte garbage>').
Fix: add the same !response.ok guard to the streaming branch, routing through
buildAntigravityUpstreamError()/buildErrorBody() (hard rule #12) instead of
piping unknown bytes through as if they were an SSE stream.
Reported-by: Duongkhanhtool (https://github.com/decolua/9router/issues/2461)