feat: 增强二维码和图片代理功能

主要修改:
1. 在QrProxyController中新增多个图片代理接口，包括首页、首次赏金、中途赏金和结束赏金图片的获取。
2. 更新LinkController中的链接状态查询逻辑，简化日志输出。
3. 在LinkStatusService中优化链接状态处理逻辑，增加对USING状态的过期检查。
4. 在ScriptClient中新增通用图片获取方法，支持从脚本端获取图片数据。
5. 更新SecurityConfig，允许公开访问二维码和游戏界面数据接口。

技术细节:
- 新增GameInterfaceResponse DTO以支持游戏界面数据的返回格式。
- 通过脚本端接口实现图片的动态获取和链接状态的自动刷新。

src/main/java/com/gameplatform/server/controller/link/LinkController.java

@@ -28,6 +28,7 @@ import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
 import reactor.core.publisher.Mono;
 
 @RestController
@@ -321,8 +322,7 @@ public Mono<Boolean> deleteLink(@PathVariable("codeNo") String codeNo, Authentic
         
         return linkStatusService.getUserLinkStatus(linkId, actualCodeNo)
                 .doOnSuccess(response -> {
-                    log.info("用户端链接状态查询成功: status={}, view={}, needRefresh={}", 
-                            response.getStatus(), response.getView(), response.getNeedRefresh());
+                    log.info("用户端链接状态查询成功: status={}", response.getStatus());
                 })
                 .doOnError(error -> {
                     log.error("用户端链接状态查询失败: {}", error.getMessage(), error);
@@ -407,7 +407,15 @@ public Mono<Boolean> deleteLink(@PathVariable("codeNo") String codeNo, Authentic
                 })
                 .onErrorResume(error -> {
                     log.error("获取设备 {} 二维码失败: {}", deviceId, error.getMessage(), error);
-                    return Mono.just(ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build());
+                    
+                    // 如果是404错误，返回404；其他错误返回500
+                    if (error instanceof WebClientResponseException.NotFound) {
+                        log.warn("设备 {} 的二维码文件不存在，返回404", deviceId);
+                        return Mono.just(ResponseEntity.status(HttpStatus.NOT_FOUND).build());
+                    } else {
+                        log.error("获取设备 {} 二维码时发生系统错误", deviceId);
+                        return Mono.just(ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build());
+                    }
                 });
     }
 }

src/main/java/com/gameplatform/server/controller/link/QrProxyController.java

@@ -1,8 +1,16 @@
 package com.gameplatform.server.controller.link;
 
+import com.gameplatform.server.mapper.agent.LinkBatchMapper;
+import com.gameplatform.server.mapper.agent.LinkTaskMapper;
+import com.gameplatform.server.model.dto.link.GameInterfaceResponse;
+import com.gameplatform.server.model.entity.agent.LinkBatch;
+import com.gameplatform.server.model.entity.agent.LinkTask;
 import com.gameplatform.server.service.external.ScriptClient;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.CacheControl;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
@@ -13,16 +21,29 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import reactor.core.publisher.Mono;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
 @RestController
 @RequestMapping("/api/link")
-@Tag(name = "二维码代理", description = "转发脚本端的二维码图片，避免混合内容")
+@Tag(name = "图片代理", description = "转发脚本端的图片，避免混合内容")
 public class QrProxyController {
+    private static final Logger log = LoggerFactory.getLogger(QrProxyController.class);
+    
     private final ScriptClient scriptClient;
+    private final String appBaseUrl;
+    private final LinkTaskMapper linkTaskMapper;
+    private final LinkBatchMapper linkBatchMapper;
 
-    public QrProxyController(ScriptClient scriptClient) {
+    public QrProxyController(ScriptClient scriptClient, 
+                           @Value("${app.base-url}") String appBaseUrl,
+                           LinkTaskMapper linkTaskMapper,
+                           LinkBatchMapper linkBatchMapper) {
         this.scriptClient = scriptClient;
+        this.appBaseUrl = appBaseUrl;
+        this.linkTaskMapper = linkTaskMapper;
+        this.linkBatchMapper = linkBatchMapper;
     }
 
     @GetMapping(value = "/{codeNo}/qr.png", produces = MediaType.IMAGE_PNG_VALUE)
@@ -36,6 +57,140 @@ public class QrProxyController {
                         .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=qr.png")
                         .body(bytes));
     }
+
+    @GetMapping(value = "/{codeNo}/homepage.png", produces = MediaType.IMAGE_PNG_VALUE)
+    @Operation(summary = "首次主页图片代理")
+    public Mono<ResponseEntity<byte[]>> homepage(@PathVariable("codeNo") String codeNo) {
+        String path = "/" + codeNo + "/首次主页.png";
+        return scriptClient.getImagePng(path)
+                .map(bytes -> ResponseEntity.ok()
+                        .contentType(MediaType.IMAGE_PNG)
+                        .cacheControl(CacheControl.maxAge(60, TimeUnit.SECONDS).cachePublic())
+                        .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=homepage.png")
+                        .body(bytes));
+    }
+
+    @GetMapping(value = "/{codeNo}/first-reward.png", produces = MediaType.IMAGE_PNG_VALUE)
+    @Operation(summary = "首次赏金图片代理")
+    public Mono<ResponseEntity<byte[]>> firstReward(@PathVariable("codeNo") String codeNo) {
+        String path = "/" + codeNo + "/首次赏金.png";
+        return scriptClient.getImagePng(path)
+                .map(bytes -> ResponseEntity.ok()
+                        .contentType(MediaType.IMAGE_PNG)
+                        .cacheControl(CacheControl.maxAge(60, TimeUnit.SECONDS).cachePublic())
+                        .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=first-reward.png")
+                        .body(bytes));
+    }
+
+    @GetMapping(value = "/{codeNo}/mid-reward.png", produces = MediaType.IMAGE_PNG_VALUE)
+    @Operation(summary = "中途赏金图片代理")
+    public Mono<ResponseEntity<byte[]>> midReward(@PathVariable("codeNo") String codeNo) {
+        String path = "/" + codeNo + "/中途赏金.png";
+        return scriptClient.getImagePng(path)
+                .map(bytes -> ResponseEntity.ok()
+                        .contentType(MediaType.IMAGE_PNG)
+                        .cacheControl(CacheControl.maxAge(60, TimeUnit.SECONDS).cachePublic())
+                        .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=mid-reward.png")
+                        .body(bytes));
+    }
+
+    @GetMapping(value = "/{codeNo}/end-reward.png", produces = MediaType.IMAGE_PNG_VALUE)
+    @Operation(summary = "结束赏金图片代理")
+    public Mono<ResponseEntity<byte[]>> endReward(@PathVariable("codeNo") String codeNo) {
+        String path = "/" + codeNo + "/结束赏金.png";
+        return scriptClient.getImagePng(path)
+                .map(bytes -> ResponseEntity.ok()
+                        .contentType(MediaType.IMAGE_PNG)
+                        .cacheControl(CacheControl.maxAge(60, TimeUnit.SECONDS).cachePublic())
+                        .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=end-reward.png")
+                        .body(bytes));
+    }
+
+    @GetMapping("/{codeNo}/images")
+    @Operation(summary = "获取所有图片代理链接")
+    public ResponseEntity<Map<String, String>> getImageLinks(@PathVariable("codeNo") String codeNo) {
+        Map<String, String> imageLinks = new HashMap<>();
+        
+        // 添加二维码链接
+        imageLinks.put("qrCode", appBaseUrl + "/api/link/" + codeNo + "/qr.png");
+        
+        // 添加其他图片链接
+        imageLinks.put("homepage", appBaseUrl + "/api/link/" + codeNo + "/homepage.png");
+        imageLinks.put("firstReward", appBaseUrl + "/api/link/" + codeNo + "/first-reward.png");
+        imageLinks.put("midReward", appBaseUrl + "/api/link/" + codeNo + "/mid-reward.png");
+        imageLinks.put("endReward", appBaseUrl + "/api/link/" + codeNo + "/end-reward.png");
+        
+        return ResponseEntity.ok()
+                .cacheControl(CacheControl.maxAge(5, TimeUnit.MINUTES).cachePublic())
+                .body(imageLinks);
+    }
+
+    @GetMapping("/{codeNo}/game-interface")
+    @Operation(summary = "获取游戏界面数据", description = "返回四张图片链接和总点数信息")
+    public ResponseEntity<GameInterfaceResponse> getGameInterface(@PathVariable("codeNo") String codeNo) {
+        log.info("获取游戏界面数据: codeNo={}", codeNo);
+        
+        try {
+            // 查询链接任务
+            LinkTask linkTask = linkTaskMapper.findByCodeNo(codeNo);
+            if (linkTask == null) {
+                log.warn("链接任务不存在: codeNo={}", codeNo);
+                return ResponseEntity.notFound().build();
+            }
+            
+            // 查询批次信息
+            LinkBatch linkBatch = linkBatchMapper.findById(linkTask.getBatchId());
+            if (linkBatch == null) {
+                log.warn("批次信息不存在: batchId={}", linkTask.getBatchId());
+                return ResponseEntity.notFound().build();
+            }
+            
+            // 构建响应对象
+            GameInterfaceResponse response = new GameInterfaceResponse();
+            response.setCodeNo(codeNo);
+            response.setQuantity(linkBatch.getQuantity());
+            response.setTimes(linkBatch.getTimes());
+            response.setTotalPoints(linkBatch.getQuantity() * linkBatch.getTimes());
+            
+            // 设置游戏区域信息
+            response.setRegion(linkTask.getRegion());
+            response.setRegionDesc(getRegionDescription(linkTask.getRegion()));
+            
+            // 设置图片链接
+            response.setQrCodeUrl(appBaseUrl + "/api/link/" + codeNo + "/qr.png");
+            response.setHomepageUrl(appBaseUrl + "/api/link/" + codeNo + "/homepage.png");
+            response.setFirstRewardUrl(appBaseUrl + "/api/link/" + codeNo + "/first-reward.png");
+            response.setMidRewardUrl(appBaseUrl + "/api/link/" + codeNo + "/mid-reward.png");
+            response.setEndRewardUrl(appBaseUrl + "/api/link/" + codeNo + "/end-reward.png");
+            
+            log.info("游戏界面数据构建完成: codeNo={}, totalPoints={}", codeNo, response.getTotalPoints());
+            
+            return ResponseEntity.ok()
+                    .cacheControl(CacheControl.maxAge(2, TimeUnit.MINUTES).cachePublic())
+                    .body(response);
+                    
+        } catch (Exception e) {
+            log.error("获取游戏界面数据失败: codeNo={}, error={}", codeNo, e.getMessage(), e);
+            return ResponseEntity.internalServerError().build();
+        }
+    }
+    
+    /**
+     * 获取区域描述
+     */
+    private String getRegionDescription(String region) {
+        if (region == null) {
+            return "未选择区域";
+        }
+        switch (region) {
+            case "Q":
+                return "QQ区";
+            case "V":
+                return "微信区";
+            default:
+                return "未知区域";
+        }
+    }
 }