feat(wearos): add release signing via EAS credentials.json

targets/wearos/app/build.gradle.kts

@@ -5,6 +5,8 @@ plugins {
     id("io.sentry.android.gradle") version "6.17.0"
 }
 
+val credentialsFile = rootProject.file("../credentials.json")
+
 android {
     namespace = "nl.guidoit.swimbuddy"
     compileSdk = 35
@@ -22,6 +24,20 @@ android {
         manifestPlaceholders["sentryDsn"] = sentryDsn
     }
 
+    signingConfigs {
+        if (credentialsFile.exists()) {
+            create("release") {
+                val credentials = groovy.json.JsonSlurper().parse(credentialsFile) as Map<*, *>
+                val keystoreData = credentials["android"]!! as Map<*, *>
+                val keyData = keystoreData["keystore"]!! as Map<*, *>
+                storeFile = rootProject.file(keyData["keystorePath"] as String)
+                storePassword = keyData["keystorePassword"] as String
+                keyAlias = keyData["keyAlias"] as String
+                keyPassword = keyData["keyPassword"] as? String ?: keyData["keystorePassword"] as String
+            }
+        }
+    }
+
     buildTypes {
         release {
             isMinifyEnabled = true
@@ -30,6 +46,9 @@ android {
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
+            if (credentialsFile.exists()) {
+                signingConfig = signingConfigs.getByName("release")
+            }
         }
     }