fix: harden PWA install prompt

src/components/InstallAppPrompt.tsx

@@ -3,16 +3,26 @@ import { Download, PlusSquare, Share } from "lucide-react";
 import { Modal } from "./Modal";
 import { useInstallPrompt } from "../lib/useInstallPrompt";
 
-export function InstallAppPrompt() {
+export function InstallAppPrompt({ compact = false }: { compact?: boolean }) {
   const { state, install } = useInstallPrompt();
   const [iosOpen, setIosOpen] = useState(false);
+  const buttonClassName = compact
+    ? "btn btn-secondary h-9 w-9 shrink-0 justify-center p-0"
+    : "btn btn-secondary w-full justify-start";
 
   if (state === "unsupported" || state === "installed") return null;
   if (state === "ios-instructions") {
     return (
       <>
-        <button type="button" className="btn btn-secondary w-full justify-start" onClick={() => setIosOpen(true)}>
-          <Download className="h-4 w-4" /> Instalar AgendaMax
+        <button
+          type="button"
+          className={buttonClassName}
+          aria-label="Instalar AgendaMax"
+          title={compact ? "Instalar AgendaMax" : undefined}
+          onClick={() => setIosOpen(true)}
+        >
+          <Download className="h-4 w-4" />
+          <span className={compact ? "sr-only" : undefined}>Instalar AgendaMax</span>
         </button>
         <Modal open={iosOpen} onClose={() => setIosOpen(false)} title="Instalar AgendaMax" subtitle="Safari lo añade a tu pantalla de inicio.">
           <div className="safe-area-bottom">
@@ -25,5 +35,16 @@ export function InstallAppPrompt() {
       </>
     );
   }
-  return <button type="button" className="btn btn-secondary w-full justify-start" onClick={() => void install()}><Download className="h-4 w-4" /> Instalar AgendaMax</button>;
+  return (
+    <button
+      type="button"
+      className={buttonClassName}
+      aria-label="Instalar AgendaMax"
+      title={compact ? "Instalar AgendaMax" : undefined}
+      onClick={() => void install()}
+    >
+      <Download className="h-4 w-4" />
+      <span className={compact ? "sr-only" : undefined}>Instalar AgendaMax</span>
+    </button>
+  );
 }