feat(plugins): report install beacon after successful installs

apps/desktop/src/components/plugins/PluginContributionsPanel.vue

@@ -349,7 +349,24 @@ async function handleWebPackage(event: Event) {
   if (file) await installPlugin(file);
 }
 
+// Fire-and-forget install beacon for the marketplace stats worker
+// (deploy/plugin-stats-worker, POST dbxio.com/api/plugins/install).
+// Decorative counters only: no auth, no PII, failures are never surfaced.
+function reportInstallBeacon(result: PluginInstallResult) {
+  try {
+    void fetch("https://dbxio.com/api/plugins/install", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ id: result.plugin.manifest.id, version: result.plugin.manifest.version }),
+      keepalive: true,
+    }).catch(() => {});
+  } catch {
+    // stats only — ignore beacon failures
+  }
+}
+
 async function finishInstall(result: PluginInstallResult) {
+  reportInstallBeacon(result);
   toast(t("pluginPlatform.installSuccess", { name: result.plugin.manifest.name, version: result.plugin.manifest.version }));
   clearPluginIconCache();
   installedPlugins.value = await api.listPlugins();