Add Time-to-Render Performance Tracking for Rovo Dev Chat Responses #1400
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What Is This Change?
Overview
This PR adds performance telemetry to track the complete end-to-end latency of Rovo Dev chat responses, specifically measuring the time from when the last message is received (from API or replay) until it’s fully rendered in the UI.
How It Works
Added timeToRender event to RovoDevPerfEvents for tracking UI render performance
2. Render Time Measurement Flow
The measurement captures the time between when messages are sent to the webview and when React completes rendering them:
Last Message Received → Store Timestamp → Send to UI → React Renders → Signal Complete → Calculate & Log