Fix settings save: use @FormParam instead of @QueryParam for PATCH body

src/main/java/com/discdrop/web/SettingsController.java

@@ -8,6 +8,7 @@ import jakarta.inject.Inject;
 import jakarta.ws.rs.*;
 import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
+import java.util.List;
 
 @Path("/api/settings")
 public class SettingsController {
@@ -30,12 +31,13 @@ public class SettingsController {
     }
 
     @PATCH
+    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
     @Produces(MediaType.TEXT_HTML)
     public Response saveSettings(
-            @QueryParam("cache_ttl_hours") @DefaultValue("8") String cacheTtl,
-            @QueryParam("default_types") @DefaultValue("Album") String defaultTypes) {
+            @FormParam("cache_ttl_hours") @DefaultValue("8") String cacheTtl,
+            @FormParam("default_types") List<String> defaultTypes) {
         db.setSetting("cache_ttl_hours", cacheTtl);
-        db.setSetting("default_types", defaultTypes);
+        db.setSetting("default_types", defaultTypes != null ? String.join(",", defaultTypes) : "Album");
         return Response.ok("<div class=\"alert alert-success\">Settings saved</div>")
             .build();
     }