feat: validate MCP tool input constraints

dap-tool-oth/src/main/java/io/shinhanlife/dap/mcc/biz/cmm/dto/BalanceRequest.java

@@ -16,10 +16,12 @@ package io.shinhanlife.dap.mcc.biz.cmm.dto;
  * </pre>
  */
 import io.shinhanlife.dap.lib.annotation.McpParameter;
+import io.shinhanlife.dap.lib.annotation.McpValidation;
 import lombok.Data;
 
 @Data
 public class BalanceRequest {
     @McpParameter(description = "고객의 계좌번호 (- 제외)", required = true)
+    @McpValidation(pattern = "\\S")
     private String accountNumber;
 }

dap-tool-oth/src/main/java/io/shinhanlife/dap/mcc/biz/cmm/dto/BillingProcessRequest.java

@@ -5,6 +5,7 @@ import lombok.NoArgsConstructor;
 import lombok.AllArgsConstructor;
 
 import io.shinhanlife.dap.lib.annotation.McpParameter;
+import io.shinhanlife.dap.lib.annotation.McpValidation;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -30,8 +31,10 @@ import lombok.Setter;
 public class BillingProcessRequest {
 
     @McpParameter(description = "처리할 청구 접수 번호", required = true)
+    @McpValidation(pattern = "\\S")
     private String billingId;
 
     @McpParameter(description = "심사 승인 여부 (예: APPROVE, REJECT)")
+    @McpValidation(required = true, allowedValues = {"APPROVE", "REJECT"})
     private String approvalStatus;
-}
+}

dap-tool-oth/src/main/java/io/shinhanlife/dap/mcc/biz/cmm/dto/BondIssueRequest.java

@@ -5,6 +5,7 @@ import lombok.NoArgsConstructor;
 import lombok.AllArgsConstructor;
 
 import io.shinhanlife.dap.lib.annotation.McpParameter;
+import io.shinhanlife.dap.lib.annotation.McpValidation;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -30,8 +31,10 @@ import lombok.Setter;
 public class BondIssueRequest {
 
     @McpParameter(description = "발행할 디지털 증권 금액", required = true)
+    @McpValidation(minimum = 1)
     private Long amount;
 
     @McpParameter(description = "발행 대상 계좌 번호", required = true)
+    @McpValidation(pattern = "\\S")
     private String targetAccount;
-}
+}

dap-tool-oth/src/main/java/io/shinhanlife/dap/mcc/biz/cmm/dto/VacationRegisterRequest.java

@@ -5,6 +5,7 @@ import lombok.NoArgsConstructor;
 import lombok.AllArgsConstructor;
 
 import io.shinhanlife.dap.lib.annotation.McpParameter;
+import io.shinhanlife.dap.lib.annotation.McpValidation;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -30,8 +31,10 @@ import lombok.Setter;
 public class VacationRegisterRequest {
 
     @McpParameter(description = "연차를 등록할 사원 번호", required = true)
+    @McpValidation(pattern = "\\S")
     private String employeeId;
 
     @McpParameter(description = "휴가 일자 (YYYY-MM-DD 형식)", required = true)
+    @McpValidation(pattern = "^\\d{4}-\\d{2}-\\d{2}$")
     private String date;
-}
+}