Add missing server delete: handler, route, and UI button

DeleteServer already existed in the store layer (refuses if clients
still reference the server) but was never wired up anywhere, so there
was no way to actually remove a server from the UI or API.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

handler/routes.go

@@ -709,6 +709,19 @@ func CreateServer(db store.IStore) echo.HandlerFunc {
 	}
 }
 
+// RemoveServer handler deletes a server, refusing if any client still
+// references it (see store.DeleteServer). Admin-only.
+func RemoveServer(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		serverID := c.Param("id")
+		if err := db.DeleteServer(serverID); err != nil {
+			return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, err.Error()})
+		}
+		log.Infof("Removed server %s", serverID)
+		return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Server removed successfully"})
+	}
+}
+
 // NewClient handler
 func NewClient(db store.IStore) echo.HandlerFunc {
 	return func(c echo.Context) error {

main.go

@@ -264,6 +264,7 @@ func main() {
 	app.POST(util.BasePath+"/servers/:id/settings", handler.SaveServerSettingsHandler(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.POST(util.BasePath+"/servers/:id/interface", handler.UpdateServerInterfaceHandler(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.POST(util.BasePath+"/servers/:id/keypair", handler.UpdateServerKeyPairHandler(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+	app.POST(util.BasePath+"/servers/:id/delete", handler.RemoveServer(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.POST(util.BasePath+"/backup/download", handler.DownloadBackup(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.GET(util.BasePath+"/api/clients", handler.GetClients(db), handler.ValidSession)
 	app.GET(util.BasePath+"/api/client/:id", handler.GetClient(db), handler.ValidSession)

templates/servers.html

@@ -203,6 +203,9 @@ All Servers
                                         <button type="button" class="btn btn-outline-secondary btn-sm" data-toggle="modal"
                                             data-target="#modal_server_interface" data-serverid="${obj.id}">Interface</button>
                                     </div>
+                                    <div class="btn-group">
+                                        <button type="button" class="btn btn-outline-danger btn-sm btn-delete-server" data-serverid="${obj.id}" data-servername="${safeName}">Delete</button>
+                                    </div>
                                     <hr>
                                     <span class="info-box-text"><i class="fas fa-server"></i> ${safeName}</span>
                                     <span class="info-box-text"><i class="fas fa-fingerprint"></i> ID: ${obj.id}</span>
@@ -470,6 +473,34 @@ All Servers
         });
     });
 
+    // Delete server button: rendered dynamically, use event delegation
+    $(document).ready(function () {
+        $('#servers-list').on('click', '.btn-delete-server', function () {
+            const serverId = $(this).data('serverid');
+            const serverName = $(this).data('servername');
+            if (!confirm("Are you sure you want to delete server \"" + serverName + "\" (" + serverId + ")?\n" +
+                "This only works if no clients are assigned to it anymore.")) {
+                return;
+            }
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/servers/' + serverId + '/delete',
+                dataType: 'json',
+                contentType: "application/json",
+                success: function (data) {
+                    toastr.success("Server deleted successfully");
+                    $('#servers-list').empty();
+                    populateServersList();
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        });
+    });
+
     $(document).ready(function () {
         $.validator.setDefaults({
             submitHandler: function (form) {