Add hosted WebUI transport tests and proxy method controls

src/main/java/com/bencodez/votingplugin/control/domain/InMemoryNodeRegistry.java

@@ -27,6 +27,7 @@ public final class InMemoryNodeRegistry implements NodeRegistry {
     public static final Set<String> SUPPORTED_CAPABILITIES = Set.of("discovery.read", "presence.snapshot",
             ConfigurationOperations.CAPABILITY, ConfigurationOperations.FILE_CAPABILITY,
             ConfigurationOperations.QUICK_SETUP_CAPABILITY, ConfigurationOperations.VOTE_SITES_SYNC_CAPABILITY,
+            ConfigurationOperations.TRANSPORT_TEST_CAPABILITY, ConfigurationOperations.PROXY_METHOD_CAPABILITY,
             "config.file-comments.v1");
     private static final Pattern ID = Pattern.compile("[A-Za-z0-9][A-Za-z0-9._-]{0,63}");
     private static final Pattern CAPABILITY = Pattern.compile("[a-z][a-z0-9.-]{0,63}");

src/main/java/com/bencodez/votingplugin/control/http/ControlHttpServer.java

@@ -388,6 +388,7 @@ private void route(HttpExchange exchange) throws IOException {
             send(exchange, 200, Map.of("items", page.items(), "offset", offset, "limit", limit,
                     "registryRevision", registryPage.revision(), "total", registryPage.total(),
                     "backendItemsReturned", page.backendItemsReturned(),
+                    "backendItemsTruncatedNodeIds", page.backendItemsTruncatedNodeIds(),
                     "backendItemsTruncated", page.backendItemsTruncated()));
             return;
         }
@@ -554,22 +555,24 @@ private void handlePasswordLogin(HttpExchange exchange, PasswordRequest request,
     }
 
     static BackendPage boundedNodePage(List<NodeStatus> nodes) {
-        if (nodes.isEmpty()) return new BackendPage(List.of(), 0, false);
+        if (nodes.isEmpty()) return new BackendPage(List.of(), 0, false, List.of());
         int perNode = Math.min(MAX_BACKENDS_PER_NODE_SUMMARY,
                 Math.max(1, MAX_BACKENDS_PER_NODE_PAGE / nodes.size()));
         int returned = 0;
         boolean truncated = false;
+        java.util.ArrayList<String> truncatedNodeIds = new java.util.ArrayList<>();
         java.util.ArrayList<NodeStatus> items = new java.util.ArrayList<>(nodes.size());
         for (NodeStatus node : nodes) {
             int count = Math.min(perNode, node.backends().size());
             returned += count;
             truncated |= count < node.backends().size();
+            if (count < node.backends().size()) truncatedNodeIds.add(node.nodeId());
             items.add(new NodeStatus(node.nodeId(), node.sessionId(), node.displayName(), node.platform(),
                     node.pluginVersion(), node.protocolVersion(), node.advertisedCapabilities(),
                     node.acceptedCapabilities(), node.detectedPlugins(), node.backends().subList(0, count),
                     node.snapshotSequence(), node.lastSeen(), node.lastAuthenticatedUpdate(), node.online()));
         }
-        return new BackendPage(List.copyOf(items), returned, truncated);
+        return new BackendPage(List.copyOf(items), returned, truncated, List.copyOf(truncatedNodeIds));
     }
 
     private <T> T read(HttpExchange exchange, Class<T> type) throws IOException {
@@ -861,7 +864,8 @@ private record WebResource(String classpath, String contentType) { }
     private record PasswordRequest(String password) { }
     private record SetupRequest(String setupCode, String password) { }
     private record EnrollmentRequest(String nodeId) { }
-    record BackendPage(List<NodeStatus> items, int backendItemsReturned, boolean backendItemsTruncated) { }
+    record BackendPage(List<NodeStatus> items, int backendItemsReturned, boolean backendItemsTruncated,
+                       List<String> backendItemsTruncatedNodeIds) { }
 
     static final class AuthFailureLimiter {
         private final java.util.function.LongSupplier nanoTime;

src/main/java/com/bencodez/votingplugin/control/protocol/ManagedConfiguration.java

@@ -11,6 +11,8 @@ public record ManagedConfiguration(String domain, Boolean sendVotesToAllServers,
     public static final String FILE = "file";
     public static final String QUICK_SETUP = "quick-setup";
     public static final String VOTE_SITES_SYNC = "sync-vote-sites";
+    public static final String COMMUNICATION_TEST = "communication-test";
+    public static final String PROXY_METHOD = "proxy-method";
     public static final int MAX_CONTENT = 512 * 1024;
 
     public ManagedConfiguration {
@@ -60,14 +62,26 @@ public void validateProposal() {
                 && (options.size() != 1 || !options.containsKey("sourceContent"))) {
             throw new IllegalArgumentException("VoteSites sync requires sourceContent");
         }
+        if (QUICK_SETUP.equals(domain) && COMMUNICATION_TEST.equals(preset)
+                && (options.size() != 1 || options.get("server") == null
+                || !options.get("server").matches("[A-Za-z0-9][A-Za-z0-9._-]{0,63}"))) {
+            throw new IllegalArgumentException("communication test requires one valid server");
+        }
+        if (QUICK_SETUP.equals(domain) && PROXY_METHOD.equals(preset)
+                && (options.size() != 1 || !List.of("PLUGINMESSAGING", "REDIS", "MQTT", "SOCKETS", "MYSQL")
+                .contains(options.get("method")))) {
+            throw new IllegalArgumentException("proxy method requires one supported method");
+        }
     }
 
     public String capability() {
         return switch (domain) {
             case PROXY_ROUTING -> "config.proxy-routing.v1";
             case FILE -> "config.files.v1";
             case QUICK_SETUP -> VOTE_SITES_SYNC.equals(preset)
-                    ? "config.vote-sites-sync.v1" : "config.quick-setup.v1";
+                    ? "config.vote-sites-sync.v1" : COMMUNICATION_TEST.equals(preset)
+                    ? "config.transport-test.v1" : PROXY_METHOD.equals(preset)
+                    ? "config.proxy-method.v1" : "config.quick-setup.v1";
             default -> throw new IllegalStateException("unsupported configuration domain");
         };
     }

src/main/resources/web/app.css

@@ -156,7 +156,8 @@ select { width: 100%; margin-bottom: 16px; }
 .check-row { display: flex; align-items: center; gap: 10px; }
 label span { color: var(--muted); font-weight: 400; }
 .operation-actions { display: flex; flex-wrap: wrap; gap: 9px; }
-#operation-status, #file-operation-status, #quick-operation-status, #vote-sites-sync-status { min-height: 84px; margin: 18px 0 0; padding: 14px; overflow: auto; border: 1px solid var(--border); border-radius: 9px; background: #050c16; color: #c6d5e8; white-space: pre-wrap; }
+.method-buttons { display: grid; grid-template-columns: repeat(auto-fit, minmax(145px, 1fr)); gap: 9px; }
+#operation-status, #file-operation-status, #quick-operation-status, #vote-sites-sync-status, #transport-test-status, #proxy-method-status { min-height: 84px; margin: 18px 0 0; padding: 14px; overflow: auto; border: 1px solid var(--border); border-radius: 9px; background: #050c16; color: #c6d5e8; white-space: pre-wrap; }
 #file-operation-status { margin: 0; border: 0; border-top: 1px solid var(--border); border-radius: 0; }
 .form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 16px 0; }
 .form-grid label { color: var(--muted); }