DEV-3859: fix variantName empty value in gradle.properties

gradle.properties

@@ -18,16 +18,16 @@ android.nonFinalResIds=false
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-ossrhUsername=""
-publishUrl=""
-sonataUsername=""
-sonataPassword=""
-variantName=""
-url=""
-ossrhPassword=""
-signing_keyId=""
-signing_password=""
-signing_secretKeyRingFile=""
-sonatype_rees46=""
-sonatype_personaclick=""
-stagingProfileId=""
+ossrhUsername=
+publishUrl=
+sonataUsername=
+sonataPassword=
+variantName=
+url=
+ossrhPassword=
+signing_keyId=
+signing_password=
+signing_secretKeyRingFile=
+sonatype_rees46=
+sonatype_personaclick=
+stagingProfileId=

gradle/publishing/signing.gradle

@@ -1,5 +1,8 @@
 signing {
-    if (!isPublishingInMavenLocal) {
+    // Skip signing for JitPack builds — no GPG key is available on JitPack servers.
+    // JitPack builds are identified by empty variantName (only set in CI/CD).
+    def isJitPackBuild = !variantName
+    if (!isPublishingInMavenLocal && !isJitPackBuild) {
         sign publishing.publications
     }
 }