add an about page #25

app/build.gradle.kts

@@ -1,8 +1,18 @@
+import java.util.Properties
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
 }
 
+val localProps = Properties().also { props ->
+    val f = rootProject.file("local.properties")
+    if (f.exists()) props.load(f.inputStream())
+}
+
+fun localOrEnv(key: String, envKey: String) =
+    localProps.getProperty(key) ?: System.getenv(envKey) ?: ""
+
 android {
     namespace = "sh.sar.basedbank"
     compileSdk = 36
@@ -15,6 +25,9 @@ android {
         versionName = "1.0.17"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+
+        buildConfigField("String", "ACCOUNT_MVR", "\"${localOrEnv("account.mvr", "ACCOUNT_MVR")}\"")
+        buildConfigField("String", "ACCOUNT_USD", "\"${localOrEnv("account.usd", "ACCOUNT_USD")}\"")
     }
 
     signingConfigs {
@@ -49,6 +62,7 @@ android {
     }
     buildFeatures {
         viewBinding = true
+        buildConfig = true
     }
 }