perf: Apk Sign fullback (#1323)

* perf: Apk Sign fullback

* Clean up signing configuration comments in build.gradle.kts

Removed commented-out signing configuration management sections.

---------

Co-authored-by: 二刺螈 <i@songe.li>

Author: cjy0812

app/build.gradle.kts

@@ -95,11 +95,15 @@ android {
         resValues = true
     }
 
-    val gkdSigningConfig = signingConfigs.create("gkd") {
-        storeFile = file(project.properties["GKD_STORE_FILE"] as String)
-        storePassword = project.properties["GKD_STORE_PASSWORD"].toString()
-        keyAlias = project.properties["GKD_KEY_ALIAS"].toString()
-        keyPassword = project.properties["GKD_KEY_PASSWORD"].toString()
+    val gkdSigningConfig = if (project.hasProperty("GKD_STORE_FILE")) {
+        signingConfigs.create("gkd") {
+            storeFile = file(project.properties["GKD_STORE_FILE"] as String)
+            storePassword = project.findProperty("GKD_STORE_PASSWORD")?.toString()
+            keyAlias = project.findProperty("GKD_KEY_ALIAS")?.toString()
+            keyPassword = project.findProperty("GKD_KEY_PASSWORD")?.toString()
+        }
+    } else {
+        signingConfigs.getByName("debug")
     }
 
     val playSigningConfig = if (project.hasProperty("PLAY_STORE_FILE")) {
@@ -295,4 +299,4 @@ dependencies {
     compileOnly(libs.loc.annotation)
 
     implementation(libs.kevinnzouWebview)
-}
+}