feat(common): 添加 BusinessException/GlobalExceptionHandler/CompanyContext/状态枚举 (T007/T008/T012-T015)

src/main/java/com/label/common/exception/BusinessException.java

@@ -0,0 +1,22 @@
+package com.label.common.exception;
+
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+public class BusinessException extends RuntimeException {
+    private final String code;
+    private final HttpStatus httpStatus;
+
+    public BusinessException(String code, String message) {
+        super(message);
+        this.code = code;
+        this.httpStatus = HttpStatus.BAD_REQUEST;
+    }
+
+    public BusinessException(String code, String message, HttpStatus httpStatus) {
+        super(message);
+        this.code = code;
+        this.httpStatus = httpStatus;
+    }
+}