feat(chat): add keyboard diagnostics

src/app/chat/hooks/use-chat-keyboard-avoidance.ts

@@ -13,6 +13,7 @@ import {
   type ChatKeyboardViewportBaseline,
   type ChatKeyboardViewportSnapshot,
 } from "./chat-keyboard-geometry";
+import { useChatKeyboardDiagnostics } from "./use-chat-keyboard-diagnostics";
 
 const CHAT_INPUT_LIFT_VAR = "--chat-input-lift";
 const CHAT_KEYBOARD_FALLBACK_DELAY_MS = 350;
@@ -39,6 +40,8 @@ export function useChatKeyboardAvoidance({
   const activeRef = useRef(active);
   const baselineRef = useRef<ChatKeyboardViewportBaseline | null>(null);
 
+  useChatKeyboardDiagnostics({ containerRef });
+
   useEffect(() => {
     activeRef.current = active;
   }, [active]);