chore: Shrink the Android app size to minimal, release type

src-tauri/Cargo.toml

@@ -95,7 +95,12 @@ tauri-plugin-single-instance = { version = "2.0.0", features = ["deep-link"] }
 # Release profile optimizations for minimal binary size
 [profile.release]
 opt-level = "z"     # Optimize for size
-lto = true          # Enable Link Time Optimization
-strip = true        # Strip symbols for smaller binary
+lto = "fat"         # Aggressive Link Time Optimization
+strip = "symbols"   # Strip debug symbols for smaller binary
 codegen-units = 1   # Reduce parallel codegen for better optimization
 panic = "abort"     # Don't unwind on panic, saves space
+overflow-checks = false  # Disable overflow checks for size
+debug = false       # No debug info
+debug-assertions = false  # No debug assertions
+incremental = false # Disable incremental compilation for release
+rpath = false       # Don't include rpath

src-tauri/gen/android/app/build.gradle.kts

@@ -38,11 +38,23 @@ android {
         }
         getByName("release") {
             isMinifyEnabled = true
+            isShrinkResources = true  // Remove unused resources
+            signingConfig = signingConfigs.getByName("release")
             proguardFiles(
                 *fileTree(".") { include("**/*.pro") }
                     .plus(getDefaultProguardFile("proguard-android-optimize.txt"))
                     .toList().toTypedArray()
             )
+            // Additional size optimizations
+            packaging {
+                resources.excludes.addAll(listOf(
+                    "META-INF/LICENSE*",
+                    "META-INF/NOTICE*",
+                    "META-INF/*.RSA",
+                    "META-INF/*.SF",
+                    "META-INF/*.DSA"
+                ))
+            }
         }
     }
     kotlinOptions {

src-tauri/plugins/tauri-plugin-hardware/src/vendor/vulkan.rs

@@ -45,6 +45,7 @@ pub fn get_vulkan_gpus(lib_path: &str) -> Vec<GpuInfo> {
     }
 }
 
+#[cfg(not(any(target_os = "android", target_os = "ios")))]
 fn parse_c_string_u8(buf: &[u8]) -> String {
     unsafe { std::ffi::CStr::from_ptr(buf.as_ptr() as *const std::ffi::c_char) }
         .to_str()

src-tauri/src/lib.rs

@@ -14,7 +14,10 @@ use tokio::sync::Mutex;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
+    #[cfg(desktop)]
     let mut builder = tauri::Builder::default();
+    #[cfg(mobile)]
+    let builder = tauri::Builder::default();
     #[cfg(desktop)]
     {
         builder = builder.plugin(tauri_plugin_single_instance::init(|_app, argv, _cwd| {

src-tauri/tauri.android.conf.json

@@ -1,4 +1,8 @@
 {
+  "build": {
+    "devUrl": null,
+    "frontendDist": "../web-app/dist"
+  },
   "app": {
     "security": {
       "capabilities": ["default"]