feat(desktop): restore Tauri auto-updater support

desktop/package.json

@@ -41,6 +41,7 @@
     "@tauri-apps/plugin-notification": "^2.3.3",
     "@tauri-apps/plugin-opener": "^2",
     "@tauri-apps/plugin-process": "^2.3.1",
+    "@tauri-apps/plugin-updater": "^2.10.0",
     "@tiptap/core": "^3.22.3",
     "@tiptap/extension-link": "^3.22.3",
     "@tiptap/extension-placeholder": "^3.22.3",

desktop/src-tauri/Cargo.toml

@@ -31,6 +31,7 @@ tauri-plugin-opener = "2"
 tauri-plugin-window-state = "2"
 tauri-plugin-websocket = "2"
 tauri-plugin-dialog = "2"
+tauri-plugin-updater = "2"
 tauri-plugin-process = "2"
 infer = "0.19"
 hex = "0.4"

desktop/src-tauri/build.rs

@@ -1,6 +1,9 @@
 fn main() {
     println!("cargo:rerun-if-env-changed=SPROUT_RELAY_URL");
     println!("cargo:rerun-if-env-changed=SPROUT_RELAY_HTTP");
+    println!("cargo:rerun-if-env-changed=SPROUT_UPDATER_PUBLIC_KEY");
+    println!("cargo:rerun-if-env-changed=SPROUT_UPDATER_ENDPOINT");
+    println!("cargo:rustc-check-cfg=cfg(sprout_updater_enabled)");
 
     if let Ok(relay_url) = std::env::var("SPROUT_RELAY_URL") {
         println!("cargo:rustc-env=SPROUT_DESKTOP_BUILD_RELAY_URL={relay_url}");
@@ -10,5 +13,18 @@ fn main() {
         println!("cargo:rustc-env=SPROUT_DESKTOP_BUILD_RELAY_HTTP={relay_http}");
     }
 
+    let updater_public_key = std::env::var("SPROUT_UPDATER_PUBLIC_KEY")
+        .ok()
+        .map(|value| value.trim().to_string())
+        .filter(|value| !value.is_empty());
+    let updater_endpoint = std::env::var("SPROUT_UPDATER_ENDPOINT")
+        .ok()
+        .map(|value| value.trim().to_string())
+        .filter(|value| !value.is_empty());
+
+    if updater_public_key.is_some() && updater_endpoint.is_some() {
+        println!("cargo:rustc-cfg=sprout_updater_enabled");
+    }
+
     tauri_build::build()
 }

desktop/src-tauri/capabilities/default.json

@@ -18,6 +18,8 @@
     "websocket:default",
     "window-state:default",
     "dialog:default",
+    "updater:allow-check",
+    "updater:allow-download-and-install",
     "process:allow-restart",
     "global-shortcut:allow-register",
     "global-shortcut:allow-unregister",

desktop/src-tauri/src/lib.rs

@@ -252,6 +252,19 @@ pub fn run() {
                 .build()
         });
 
+    // Only register the updater in release builds that were compiled with a
+    // real updater configuration. Local unsigned builds omit that config and
+    // should still launch for debugging.
+    #[cfg(sprout_updater_enabled)]
+    let builder = if cfg!(debug_assertions) {
+        builder
+    } else {
+        builder.plugin(tauri_plugin_updater::Builder::new().build())
+    };
+
+    #[cfg(not(sprout_updater_enabled))]
+    let builder = builder;
+
     let shutdown_started = Arc::new(AtomicBool::new(false));
     let restore_shutdown_started = Arc::clone(&shutdown_started);
     let app = builder

desktop/src-tauri/tauri.conf.json

@@ -33,6 +33,11 @@
       "csp": null
     }
   },
+  "plugins": {
+    "updater": {
+      "endpoints": []
+    }
+  },
   "bundle": {
     "active": true,
     "targets": "all",