Set pre-release app version and append a git-based debug suffix.

Made-with: Cursor

app/build.gradle.kts

@@ -1,3 +1,5 @@
+import com.android.build.api.dsl.ApplicationExtension
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.hilt.android)
@@ -5,7 +7,19 @@ plugins {
     alias(libs.plugins.kotlin.compose)
 }
 
-android {
+fun gitCommitCount(): String {
+    return runCatching {
+        val process = ProcessBuilder("git", "rev-list", "--count", "HEAD")
+            .redirectErrorStream(true)
+            .start()
+        val output = process.inputStream.bufferedReader().use { it.readText().trim() }
+        if (process.waitFor() == 0 && output.isNotBlank()) output else "local"
+    }.getOrElse { "local" }
+}
+
+val debugBuildId = gitCommitCount()
+
+extensions.configure<ApplicationExtension> {
     namespace = "org.db3.airmq"
     compileSdk {
         version = release(36) {
@@ -18,12 +32,16 @@ android {
         minSdk = 24
         targetSdk = 36
         versionCode = 1
-        versionName = "1.0"
+        versionName = "3.0.0-pre"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
+        getByName("debug") {
+            versionNameSuffix = "_debug_$debugBuildId"
+        }
+
         release {
             isMinifyEnabled = false
             proguardFiles(