⚡ Bolt: Eliminate cascading render in SessionDrawer

[parvezk]

💡 What: Moved the prop-driven state reset for message and sent in SessionDrawer out of a useEffect and into a conditional render-phase check (if (session?.id !== prevSessionId)).
🎯 Why: Setting state synchronously inside a useEffect when responding to prop changes triggers an extra render cycle, which causes cascading re-renders and degrades performance (and triggered an ESLint warning).
📊 Impact: Eliminates an unnecessary render cycle whenever a user clicks to view a different session, resulting in a slightly snappier UI response and resolving the ESLint react-hooks/set-state-in-effect error.
🔬 Measurement: Verified by running cd web && pnpm lint which now passes without the error, and manual review of the logic. Tests and builds pass as expected.

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PR created automatically by Jules for task 4610172703070404862 started by @parvezk

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Project	Deployment	Actions	Updated (UTC)
polyagent	Ready	Preview, Comment	Jul 17, 2026 8:24am

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