v1.0.52: add Launch Nextcloud button

Spawns the Nextcloud.app binary directly (detached, no Terminal window)
since it doesn't register properly with launch services on some setups.
New action requires a one-time plugin reinstall (manifest changes don't
ship through the OTA updater, which only touches plugin.js + assets).

src/plugin.ts

@@ -1,4 +1,4 @@
-const CURRENT_VERSION = "1.0.51";
+const CURRENT_VERSION = "1.0.52";
 const GITEA_BASE = "https://gitea.pdmarf.co.uk/pdm/stream_deck_notion_timer/raw/branch/stable-rebuild";
 const SIGNING_PUBLIC_KEY = `-----BEGIN PUBLIC KEY-----
 MCowBQYDK2VwAyEAN7ko8TUpuPzPAJuKAZCRjV0c4ZSlou5d9pUAF6o12b4=
@@ -333,8 +333,31 @@ class TimerToggle extends SingletonAction<TimerSettings> {
   }
 }
 
+const NEXTCLOUD_BIN = "/Applications/Nextcloud.app/Contents/MacOS/Nextcloud";
+
+@action({ UUID: "com.pdma.notion-timer.launch-nextcloud" })
+class LaunchNextcloud extends SingletonAction {
+  async onKeyDown(ev: KeyDownEvent): Promise<void> {
+    try {
+      const { spawn } = await import("node:child_process");
+      const child = spawn(NEXTCLOUD_BIN, [], { detached: true, stdio: "ignore" });
+      // "error" (e.g. ENOENT if Nextcloud isn't installed at this path) fires
+      // asynchronously — without this listener it would crash the plugin process.
+      child.once("error", (err) => {
+        streamDeck.logger.error("Failed to launch Nextcloud:", err);
+      });
+      child.unref();
+      await ev.action.showOk();
+    } catch (err) {
+      streamDeck.logger.error("Failed to launch Nextcloud:", err);
+      await ev.action.showAlert();
+    }
+  }
+}
+
 const timerAction = new TimerToggle();
 streamDeck.actions.registerAction(timerAction);
+streamDeck.actions.registerAction(new LaunchNextcloud());
 
 streamDeck.ui.onSendToPlugin<{ event: string; settings?: TimerSettings; token?: string }>(async (ev) => {
   if (ev.payload.event === "saveSettings" && ev.payload.settings) {