diff --git a/custom_components/bahmcloud_store/panel/app.js b/custom_components/bahmcloud_store/panel/app.js
index 4dc341c..9054b81 100644
--- a/custom_components/bahmcloud_store/panel/app.js
+++ b/custom_components/bahmcloud_store/panel/app.js
@@ -1,29 +1,86 @@
-async function load() {
+async function apiGet() {
   const r = await fetch("/api/bahmcloud_store", { credentials: "same-origin" });
-  const data = await r.json();
+  return await r.json();
+}
 
+async function apiPost(payload) {
+  const r = await fetch("/api/bahmcloud_store", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    credentials: "same-origin",
+    body: JSON.stringify(payload),
+  });
+  return await r.json();
+}
+
+function el(tag, attrs = {}, children = []) {
+  const n = document.createElement(tag);
+  for (const [k, v] of Object.entries(attrs)) {
+    if (k === "class") n.className = v;
+    else if (k === "onclick") n.onclick = v;
+    else n.setAttribute(k, v);
+  }
+  for (const c of children) {
+    n.appendChild(typeof c === "string" ? document.createTextNode(c) : c);
+  }
+  return n;
+}
+
+function card(pkg) {
+  const installedBadge = el("span", { class: "badge" }, [pkg.installed ? "Installed" : "Not installed"]);
+
+  const title = el("div", {}, [
+    el("strong", {}, [pkg.name]),
+    el("div", { class: "muted" }, [pkg.repo]),
+  ]);
+
+  const ver = el("div", { class: "muted" }, [
+    `Installed: ${pkg.installed_version || "-"} | Latest: ${pkg.latest_version || "-"}`
+  ]);
+
+  const btnInstall = el("button", {
+    onclick: async () => {
+      btnInstall.disabled = true;
+      btnInstall.textContent = "Working...";
+      await apiPost({ op: "install", package_id: pkg.id });
+      await load();
+    }
+  }, [pkg.installed ? "Reinstall" : "Install"]);
+
+  const btnUpdate = el("button", {
+    onclick: async () => {
+      btnUpdate.disabled = true;
+      btnUpdate.textContent = "Working...";
+      await apiPost({ op: "update", package_id: pkg.id });
+      await load();
+    }
+  }, ["Update"]);
+
+  // Update-Button nur wenn installiert
+  btnUpdate.disabled = !pkg.installed;
+
+  const actions = el("div", { class: "actions" }, [btnInstall, btnUpdate]);
+
+  return el("div", { class: "card" }, [
+    el("div", { class: "row" }, [title, installedBadge]),
+    ver,
+    actions
+  ]);
+}
+
+async function load() {
+  const status = document.getElementById("status");
   const list = document.getElementById("list");
+
+  status.textContent = "Loading...";
   list.innerHTML = "";
 
-  data.packages.forEach(p => {
-    const div = document.createElement("div");
-    div.className = "card";
-    div.innerHTML = `
-      <div class="row">
-        <div>
-          <b>${p.name}</b>
-          <div class="muted">${p.repo}</div>
-        </div>
-        <div class="badge">${p.installed ? "Installed" : "Not installed"}</div>
-      </div>
-      <div class="muted">
-        Installed: ${p.installed_version || "-"} |
-        Latest: ${p.latest_version || "-"}
-        ${p.release_url ? `| <a href="${p.release_url}" target="_blank">Release</a>` : ""}
-      </div>
-    `;
-    list.appendChild(div);
-  });
+  const data = await apiGet();
+  status.textContent = `Store: ${data.store_url}`;
+
+  for (const pkg of data.packages) {
+    list.appendChild(card(pkg));
+  }
 }
 
 document.getElementById("refresh").onclick = load;