Fix tabs for jsonp

static/jsonp.js

@@ -1,6 +1,11 @@
-import {h, htm, render, signal, computed, effect} from "./preact.js"
+import {h, htm, render, signal, computed, effect} from "preact"
 const html = htm.bind(h)
 
+// *** Status
+
+const loaded = signal(false)
+export {loaded}
+
 // *** Loading indicator
 
 render(html`Loading, please wait...`, document.getElementById("loading"))
@@ -69,6 +74,7 @@ async function cont() {
 		if (redirectTo) {
 			redirectTo.click()
 		}
+		loaded.value = true
 	})
 
 	xhr.open("POST", "/api/render/wiki")