feat: 添加图形验证码接口和扣分项排序功能

新增功能:
- 添加图形验证码接口 GET /oauth/captcha，返回验证码图片和key
- 添加扣分项排序接口 POST /update-order
- 新增数据库完整备份 martial_db.sql

技术细节:
- CaptchaController: 新增 getCaptcha() 方法，生成4位验证码，Redis缓存5分钟
- MartialDeductionItemController: 新增 updateOrder() 批量更新排序
- IMartialDeductionItemService/Impl: 新增排序服务方法

src/main/java/org/springblade/modules/auth/controller/CaptchaController.java

@@ -28,11 +28,39 @@ public class CaptchaController {
 
 	private final BladeRedis bladeRedis;
 
+	/**
+	 * 获取图形验证码
+	 */
+	@GetMapping("/oauth/captcha")
+	@ApiOperationSupport(order = 1)
+	@Operation(summary = "获取图形验证码", description = "返回验证码图片和key")
+	public R<java.util.Map<String, String>> getCaptcha() {
+		// 生成唯一key
+		String key = java.util.UUID.randomUUID().toString().replace("-", "");
+
+		// 生成4位随机验证码
+		String code = generateCode(4);
+
+		// 存储验证码到Redis，有效期5分钟
+		String cacheKey = CacheNames.CAPTCHA_KEY + key;
+		bladeRedis.setEx(cacheKey, code.toLowerCase(), Duration.ofMinutes(5));
+
+		// 生成验证码图片（简单的base64图片）
+		String image = generateCaptchaImage(code);
+
+		// 返回结果
+		java.util.Map<String, String> result = new java.util.HashMap<>();
+		result.put("key", key);
+		result.put("image", image);
+
+		return R.data(result);
+	}
+
 	/**
 	 * 发送短信验证码
 	 */
 	@PostMapping("/send")
-	@ApiOperationSupport(order = 1)
+	@ApiOperationSupport(order = 2)
 	@Operation(summary = "发送短信验证码", description = "传入手机号")
 	public R send(@Parameter(description = "手机号", required = true) @RequestParam String phone) {
 		// 验证手机号格式
@@ -78,4 +106,62 @@ public class CaptchaController {
 		}
 		return code.toString();
 	}
+
+	/**
+	 * 生成验证码图片（Base64格式）
+	 * 使用 SVG 格式生成验证码,避免字体依赖问题
+	 *
+	 * @param code 验证码文本
+	 * @return Base64编码的图片
+	 */
+	private String generateCaptchaImage(String code) {
+		Random random = new Random();
+		StringBuilder svg = new StringBuilder();
+
+		svg.append("<svg xmlns='http://www.w3.org/2000/svg' width='120' height='40'>");
+
+		// 背景
+		svg.append("<rect width='120' height='40' fill='#f8f9fa'/>");
+
+		// 绘制验证码字符
+		for (int i = 0; i < code.length(); i++) {
+			char c = code.charAt(i);
+			int x = 15 + i * 25;
+			int y = 25 + random.nextInt(5) - 2;
+			int rotate = random.nextInt(30) - 15;
+
+			// 随机颜色
+			String color = String.format("#%02x%02x%02x",
+				random.nextInt(100),
+				random.nextInt(100),
+				random.nextInt(100));
+
+			svg.append(String.format(
+				"<text x='%d' y='%d' font-size='28' font-weight='bold' fill='%s' transform='rotate(%d %d %d)'>%c</text>",
+				x, y, color, rotate, x, y, c
+			));
+		}
+
+		// 添加干扰线
+		for (int i = 0; i < 3; i++) {
+			int x1 = random.nextInt(120);
+			int y1 = random.nextInt(40);
+			int x2 = random.nextInt(120);
+			int y2 = random.nextInt(40);
+			String color = String.format("#%02x%02x%02x",
+				random.nextInt(200) + 50,
+				random.nextInt(200) + 50,
+				random.nextInt(200) + 50);
+
+			svg.append(String.format(
+				"<line x1='%d' y1='%d' x2='%d' y2='%d' stroke='%s' stroke-width='1'/>",
+				x1, y1, x2, y2, color
+			));
+		}
+
+		svg.append("</svg>");
+
+		// 转换为 Base64
+		return "data:image/svg+xml;base64," + java.util.Base64.getEncoder().encodeToString(svg.toString().getBytes());
+	}
 }

src/main/java/org/springblade/modules/martial/controller/MartialDeductionItemController.java

@@ -75,4 +75,13 @@ public class MartialDeductionItemController extends BladeController {
 		return R.status(deductionItemService.removeByIds(Func.toLongList(ids)));
 	}
 
+	/**
+	 * 更新排序
+	 */
+	@PostMapping("/update-order")
+	@Operation(summary = "更新排序", description = "传入排序数据")
+	public R updateOrder(@RequestBody List<MartialDeductionItem> sortData) {
+		return R.status(deductionItemService.updateOrder(sortData));
+	}
+
 }

src/main/java/org/springblade/modules/martial/service/IMartialDeductionItemService.java

@@ -3,6 +3,8 @@ package org.springblade.modules.martial.service;
 import com.baomidou.mybatisplus.extension.service.IService;
 import org.springblade.modules.martial.pojo.entity.MartialDeductionItem;
 
+import java.util.List;
+
 /**
  * DeductionItem 服务类
  *
@@ -10,4 +12,12 @@ import org.springblade.modules.martial.pojo.entity.MartialDeductionItem;
  */
 public interface IMartialDeductionItemService extends IService<MartialDeductionItem> {
 
+	/**
+	 * 批量更新排序
+	 *
+	 * @param sortData 排序数据
+	 * @return 是否成功
+	 */
+	boolean updateOrder(List<MartialDeductionItem> sortData);
+
 }

src/main/java/org/springblade/modules/martial/service/impl/MartialDeductionItemServiceImpl.java

@@ -6,6 +6,8 @@ import org.springblade.modules.martial.mapper.MartialDeductionItemMapper;
 import org.springblade.modules.martial.service.IMartialDeductionItemService;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 /**
  * DeductionItem 服务实现类
  *
@@ -14,4 +16,23 @@ import org.springframework.stereotype.Service;
 @Service
 public class MartialDeductionItemServiceImpl extends ServiceImpl<MartialDeductionItemMapper, MartialDeductionItem> implements IMartialDeductionItemService {
 
+	@Override
+	public boolean updateOrder(List<MartialDeductionItem> sortData) {
+		if (sortData == null || sortData.isEmpty()) {
+			return false;
+		}
+
+		// 批量更新排序
+		for (MartialDeductionItem item : sortData) {
+			if (item.getId() != null && item.getSortOrder() != null) {
+				MartialDeductionItem updateItem = new MartialDeductionItem();
+				updateItem.setId(item.getId());
+				updateItem.setSortOrder(item.getSortOrder());
+				this.updateById(updateItem);
+			}
+		}
+
+		return true;
+	}
+
 }