fix: correct Gemini 3 thought signature injection format via OpenRouter#10640

mrubens merged 1 commit intomainRooCodeInc/Roo-Code:mainfrom

feature/roo-494-fix-gemini-3-thought-signature-is-not-valid-error-viaRooCodeInc/Roo-Code:feature/roo-494-fix-gemini-3-thought-signature-is-not-valid-error-viaCopy head branch name to clipboard