finalize tonight's session

src/client/src/App.tsx

···
   return (
     <>
       <div className="card">
-        <button onClick={() => setCount((count: number) => count + 1)}>
+        <button type="button" onClick={() => setCount((count: number) => count + 1)}>
           count is {count}
         </button>
         <p>

src/common/gate.ts

···
+// deno-lint-ignore no-explicit-any
 export function makeGate<F extends (...args: any[]) => void>(
   outercb?: () => void,
 ) {