Execute, executeClaudeNonStream and ExecuteStream all assign the validated original payload to the request and then translate both values. Since both translations saw the same bytes, every Antigravity request paid for a second full scan of the client payload. On a captured 24MB tool-history request that second pass cost roughly 0.9s of CPU and 651MB of allocations. Translate once when both inputs share a backing array and hand the caller an independent duplicate, because later stages edit the working copy in place. Payloads that genuinely differ still get two translations.