refactor(android): consolidate signing config and bump SDK to 36

- Remove external android-signing.gradle.kts, inline keystore config
  into app/build.gradle.kts
- Update compileSdk and targetSdk to 36
- Fix version format in package.json (v0.1 → 0.1.0)

scripts/patch-android-signing.sh

@@ -1,28 +1,60 @@
 #!/usr/bin/env bash
-# Patch the generated Android build.gradle.kts with signing configuration.
-# Run this after `tauri android init` if the signing config is missing.
-
+# Patch the generated Android build.gradle.kts with signing + per-arch release builds.
+# Run this after `tauri android init` if the gen/android/ directory was regenerated.
 set -euo pipefail
 
 BUILD_FILE="src-tauri/gen/android/app/build.gradle.kts"
-SIGNING_FILE="src-tauri/android-signing.gradle.kts"
 
 if [ ! -f "$BUILD_FILE" ]; then
     echo "Error: $BUILD_FILE not found. Run 'tauri android init' first."
     exit 1
 fi
 
-# Check if signing is already configured
 if grep -q "keystoreProperties" "$BUILD_FILE" 2>/dev/null; then
-    echo "Signing already configured in $BUILD_FILE"
+    echo "Patch already applied."
     exit 0
 fi
 
-# Insert signing config block: find `signingConfigs` or add it before `buildTypes`,
-# then add `signingConfig` to the release buildType.
-# Strategy: replace the entire android block content using the external apply approach.
+# 1. Add keystore properties loading after the tauriProperties block
+sed -i '/^val tauriProperties/,/^$/{
+  /^$/a\
+\
+// Release signing config\
+val keystorePropertiesFile = java.io.File("/home/msksbr/Android/keystore.properties")\
+val keystoreProperties = Properties().apply {\
+    if (keystorePropertiesFile.exists()) {\
+        keystorePropertiesFile.inputStream().use { load(it) }\
+    }\
+}
+}' "$BUILD_FILE"
 
-# Inject the apply-line at end of file (before the tauri.build.gradle.kts apply)
-sed -i 's|apply(from = "tauri.build.gradle.kts")|apply(from = "../../../android-signing.gradle.kts")\napply(from = "tauri.build.gradle.kts")|' "$BUILD_FILE"
+# 2. Add signingConfigs block inside the android block, before buildTypes
+sed -i '/buildTypes {/i\    signingConfigs {\
+        if (keystorePropertiesFile.exists()) {\
+            create("release") {\
+                storeFile = java.io.File(keystoreProperties["storeFile"] as String)\
+                storePassword = keystoreProperties["storePassword"] as String\
+                keyAlias = keystoreProperties["keyAlias"] as String\
+                keyPassword = keystoreProperties["keyPassword"] as String\
+            }\
+        }\
+    }\
+' "$BUILD_FILE"
+
+# 3. Add signingConfig to the release buildType
+sed -i '/getByName("release") {/a\            if (keystorePropertiesFile.exists()) {\
+                signingConfig = signingConfigs.getByName("release")\
+            }' "$BUILD_FILE"
+
+# 4. Add per-arch release APK build task dependency
+cat >> "$BUILD_FILE" << 'TASKDEP'
+
+// Also build per-architecture release APKs when universal release is built
+tasks.whenTaskAdded {
+    if (name == "assembleUniversalRelease") {
+        dependsOn("assembleArm64Release", "assembleArmRelease")
+    }
+}
+TASKDEP
 
 echo "Signing config patched into $BUILD_FILE"