feat(报销/拨款): 进入页面检测OCR服务状态

- 后端新增 GET /ocr-health 端点，探测 Python OCR 服务 /health
- 前端页面 created 时调用健康检查，服务不可用时顶部显示红色警告
  "发票识别服务已停止，请联系信息化部门"
- 服务不可用时禁用附件上传区域（FileUpload 新增 disabled prop）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

fad-hrm/src/main/java/com/ruoyi/hrm/controller/HrmAppropriationReqController.java

@@ -68,9 +68,11 @@ public class HrmAppropriationReqController extends BaseController {
         return R.ok(service.queryList(bo));
     }
 
-    /**
-     * 通过ossId触发发票OCR识别，返回识别条目（不保存，供前端实时回显）
-     */
+    @GetMapping("/ocr-health")
+    public R<Boolean> ocrHealth() {
+        return R.ok(invoiceOcrService.isAlive());
+    }
+
     @PostMapping("/ocr-by-oss")
     public R<HrmInvoiceOcrResultVo> ocrByOss(@RequestParam @NotNull Long ossId) {
         return R.ok(invoiceOcrService.recognizeByOssId(ossId));

fad-hrm/src/main/java/com/ruoyi/hrm/controller/HrmReimburseReqController.java

@@ -68,9 +68,11 @@ public class HrmReimburseReqController extends BaseController {
         return R.ok(service.queryList(bo));
     }
 
-    /**
-     * 通过ossId触发发票OCR识别，返回识别条目（不保存，供前端实时回显）
-     */
+    @GetMapping("/ocr-health")
+    public R<Boolean> ocrHealth() {
+        return R.ok(invoiceOcrService.isAlive());
+    }
+
     @PostMapping("/ocr-by-oss")
     public R<HrmInvoiceOcrResultVo> ocrByOss(@RequestParam @NotNull Long ossId) {
         return R.ok(invoiceOcrService.recognizeByOssId(ossId));

fad-hrm/src/main/java/com/ruoyi/hrm/service/IHrmInvoiceOcrService.java

@@ -9,9 +9,11 @@ public interface IHrmInvoiceOcrService {
 
     /**
      * 通过ossId识别发票
-     *
-     * @param ossId 附件ID
-     * @return 识别结果
      */
     HrmInvoiceOcrResultVo recognizeByOssId(Long ossId);
+
+    /**
+     * 检查OCR服务是否存活
+     */
+    boolean isAlive();
 }

fad-hrm/src/main/java/com/ruoyi/hrm/service/impl/HrmInvoiceOcrServiceImpl.java

@@ -193,6 +193,20 @@ public class HrmInvoiceOcrServiceImpl implements IHrmInvoiceOcrService {
         return val.toString();
     }
 
+    @Override
+    public boolean isAlive() {
+        String ocrUrl = ocrProperties.getUrl();
+        if (StringUtils.isBlank(ocrUrl)) return false;
+        try {
+            RestTemplate restTemplate = new RestTemplate();
+            ResponseEntity<String> resp = restTemplate.getForEntity(ocrUrl + "/health", String.class);
+            return resp.getStatusCode().is2xxSuccessful();
+        } catch (Exception e) {
+            log.warn("[OCR] 健康检查失败: {}", e.getMessage());
+            return false;
+        }
+    }
+
     private String getStringOrFieldValue(JSONObject obj, String key) {
         Object val = obj.get(key);
         if (val == null) return null;