Fall back to the release feed for update checks

src-tauri/tauri.conf.json

@@ -67,7 +67,8 @@
     "updater": {
       "pubkey": "dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IDY4NDMzMDkwRTQzNzIxQ0MKUldUTUlUZmtrREJEYUN6NXpqMndNLzlyVEZxbndacHNydEFWQVBydm1uUUkxUUsxZ0xUYS9zYkYK",
       "endpoints": [
-        "https://gist.githubusercontent.com/solancer/47a3dee0bace9ff5134878f55d887157/raw/latest.json"
+        "https://gist.githubusercontent.com/solancer/47a3dee0bace9ff5134878f55d887157/raw/latest.json",
+        "https://github.com/solancer/sarala/releases/latest/download/latest.json"
       ]
     }
   }

src/updater.ts

@@ -130,8 +130,14 @@ async function runCheck(silent: boolean): Promise<void> {
     setAvailableUpdate({ version: update.version, notes: (update.body ?? "").trim() });
   } catch (err) {
     if (!silent) {
+      // A network failure reads as "error sending request for url (…)", which
+      // says nothing useful to the person; lead with what they can do.
+      const detail = err instanceof Error ? err.message : String(err);
+      const offline = /sending request|timed out|connect|dns|network/i.test(detail);
       await alertDialog(
-        `Update check failed: ${err instanceof Error ? err.message : String(err)}`,
+        offline
+          ? "Couldn't reach the update server. Check your internet connection and try again."
+          : `Update check failed: ${detail}`,
         "Update",
       );
     }