Make specFile optional in release task

Author: bentsherman

src/main/groovy/io/nextflow/gradle/registry/RegistryClient.groovy

@@ -139,7 +139,7 @@ class RegistryClient {
             id: id,
             version: version,
             checksum: "sha512:${checksum}",
-            spec: spec.text,
+            spec: spec.exists() ? spec.text : null,
             provider: provider
         ]
         def jsonBody = JsonOutput.toJson(requestBody)

src/main/groovy/io/nextflow/gradle/registry/RegistryReleaseIfNotExistsTask.groovy

@@ -5,6 +5,7 @@ import io.nextflow.gradle.NextflowPluginConfig
 import org.gradle.api.DefaultTask
 import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.TaskAction
 
 /**
@@ -29,6 +30,7 @@ class RegistryReleaseIfNotExistsTask extends DefaultTask {
      * By default, this points to the spec file created by the packagePlugin task.
      */
     @InputFile
+    @Optional
     final RegularFileProperty specFile
 
     RegistryReleaseIfNotExistsTask() {

src/main/groovy/io/nextflow/gradle/registry/RegistryReleaseTask.groovy

@@ -5,6 +5,7 @@ import io.nextflow.gradle.NextflowPluginConfig
 import org.gradle.api.DefaultTask
 import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.TaskAction
 
 /**
@@ -28,6 +29,7 @@ class RegistryReleaseTask extends DefaultTask {
      * By default, this points to the spec file created by the packagePlugin task.
      */
     @InputFile
+    @Optional
     final RegularFileProperty specFile
 
     RegistryReleaseTask() {

src/test/groovy/io/nextflow/gradle/registry/RegistryReleaseTaskTest.groovy

@@ -171,4 +171,29 @@ class RegistryReleaseTaskTest extends Specification {
         // This proves the fallback configuration is working
         thrown(RegistryReleaseException)
     }
+
+    def "should work when spec file is missing"() {
+        given:
+        project.ext['npr.apiKey'] = 'project-token'
+        project.ext['npr.apiUrl'] = 'https://project-registry.com/api'
+        project.nextflowPlugin {
+            description = 'A test plugin'
+            provider = 'Test Author'
+            className = 'com.example.TestPlugin'
+            nextflowVersion = '24.04.0'
+            extensionPoints = ['com.example.TestExtension']
+            registry {
+                url = 'https://example.com/registry'
+            }
+        }
+
+        // Don't set specFile - it should be optional
+
+        when:
+        task.run()
+
+        then:
+        // Should fail with connection error, not with missing file error
+        thrown(RegistryReleaseException)
+    }
 }