feat: Separate tool routing (register) from UI visibility (visible)

axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/controller/McpRouterController.java

@@ -84,7 +84,10 @@ public class McpRouterController {
 
     @GetMapping("/tools/list")
     public ResponseEntity<JsonRpcResponse> listTools() {
-        List<ToolMetadata> activeTools = redisRegistryService.getAllTools();
+        List<ToolMetadata> activeTools = redisRegistryService.getAllTools()
+                .stream()
+                .filter(ToolMetadata::isVisible)
+                .collect(java.util.stream.Collectors.toList());
         
         JsonRpcResponse response = new JsonRpcResponse();
         response.setId(UUID.randomUUID().toString());
@@ -95,7 +98,10 @@ public class McpRouterController {
 
     @GetMapping(value = "/tools/docs/markdown", produces = "text/markdown;charset=UTF-8")
     public ResponseEntity<String> generateToolsMarkdown() {
-        List<ToolMetadata> tools = redisRegistryService.getAllTools();
+        List<ToolMetadata> tools = redisRegistryService.getAllTools()
+                .stream()
+                .filter(ToolMetadata::isVisible)
+                .collect(java.util.stream.Collectors.toList());
         
         StringBuilder md = new StringBuilder();
         md.append("# \uD83E\uDD16 Shinhan AI Tool Catalog\n\n");

axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/dto/ToolMetadata.java

@@ -40,6 +40,9 @@ public class ToolMetadata {
     // 2-3. Pod 실행 URL (독립적인 Microservice 라우팅용, 예: http://localhost:8082)
     private String podUrl;
 
+    // 2-4. 가시성 여부
+    private boolean visible;
+
     // 3. 연동 아키텍처 구분 (DIRECT / MCI_EAI)
     private String integrationType;   // 연동 타입: "DIRECT" 또는 "MCI_EAI"
 

axhub-gateway/src/main/java/io/shinhanlife/axhub/biz/mcp/gateway/service/ToolPlanner.java

@@ -37,17 +37,8 @@ public class ToolPlanner {
         var toolMetadata = redisRegistryService.getTool(toolName);
 
         if (toolMetadata == null) {
-            log.warn(" [Planner] 등록되지 않은 툴 요청: {}. 레지스트리를 참조하지 않고 강제 연동 모드로 전환합니다.", toolName);
-            // 히든 툴(register=false)에 대한 강제 라우팅 폴백
-            String fallbackPodUrl = "http://tool-other:8084"; // 기본값 (get_template_file_url 등)
-            if (toolName.contains("email")) fallbackPodUrl = "http://tool-email:8083";
-            else if (toolName.contains("sms")) fallbackPodUrl = "http://tool-sms:8082";
-
-            toolMetadata = ToolMetadata.builder()
-                .toolName(toolName)
-                .integrationType("DIRECT")
-                .podUrl(fallbackPodUrl)
-                .build();
+            log.warn(" [Planner] 등록되지 않은 툴 요청: {}", toolName);
+            throw new RuntimeException("해당 툴(" + toolName + ")이 레지스트리에 존재하지 않습니다.");
         }
 
         // 2-1. [신규] 도메인 그룹핑 기반 권한 검증