This commit introduces two major enhancements to the Gemini Web client to improve user experience and conversation continuity.
First, it implements a pseudo-streaming mechanism for non-code mode. The Gemini Web API returns the full response at once in this mode, leading to a poor user experience with a long wait for output. This change splits the full response into smaller chunks and sends them with an 80ms delay, simulating a real-time streaming effect.
Second, the conversation context reuse logic is now more robust. A fallback mechanism has been added to reuse conversation metadata when a clear continuation context is detected (e.g., a user replies to an assistant's turn). This improves conversational flow. Metadata lookups have also been improved to check both the canonical model key and its alias for better compatibility.
