fix(gateway): fix routing prefix matching and cache fallback tools

dap-gateway/src/main/java/io/shinhanlife/dap/mcg/presentation/McpRouterController.java

@@ -154,6 +154,7 @@ public class McpRouterController {
                         if (Boolean.TRUE.equals(t.getVisible()) && !knownTools.contains(t.getUid())) {
                             activeTools.add(t);
                             knownTools.add(t.getUid());
+                            registryService.saveTool(t);
                         }
                     }
                 }

dap-gateway/src/main/java/io/shinhanlife/dap/mcg/service/ToolPlanner.java

@@ -58,7 +58,7 @@ public class ToolPlanner {
             String fallbackPodUrl = fallbackProperties.getDefaultUrl();
             if (fallbackProperties.getRoutes() != null) {
                 for (Map.Entry<String, String> entry : fallbackProperties.getRoutes().entrySet()) {
-                    if (toolName.contains(entry.getKey())) {
+                    if (toolName.startsWith(entry.getKey() + "_")) {
                         fallbackPodUrl = entry.getValue();
                         break;
                     }