Add regression coverage for plugin descriptor parsing

package/package/src/test/java/net/runelite/pluginhub/packager/PluginTest.java

@@ -29,6 +29,8 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Comparator;
 import java.util.Properties;
 import lombok.extern.slf4j.Slf4j;
 import net.runelite.pluginhub.uploader.Util;
@@ -70,6 +72,27 @@ public void testCommitMustBeComplete() throws DisabledPluginException, IOExcepti
 		}
 	}
 
+	@Test
+	public void testAllPluginDescriptorsParse() throws IOException, PluginBuildException
+	{
+		File[] descriptors = new File("plugins").listFiles(File::isFile);
+		Assert.assertNotNull(descriptors);
+		Assert.assertTrue(descriptors.length > 0);
+		Arrays.sort(descriptors, Comparator.comparing(File::getName));
+
+		for (File descriptor : descriptors)
+		{
+			try (Plugin ignored = new Plugin(descriptor))
+			{
+				// Constructor validation is enough; building each plugin is covered by the packager flow.
+			}
+			catch (DisabledPluginException ignored)
+			{
+				// Disabled and unavailable descriptors are intentionally short-circuited by the packager.
+			}
+		}
+	}
+
 	@Test
 	public void testExamplePluginCompiles() throws DisabledPluginException, PluginBuildException, IOException, InterruptedException
 	{

plugins/grand-flip-out

@@ -0,0 +1,3 @@
+repository=https://github.com/Tunatroll/grand-flip-out.git
+commit=1d2649de4cb8cdac32a771b6e6fcb9396e32fdc1
+warning=This plugin submits your IP address to a 3rd-party server not controlled or verified by RuneLite developers.