fix(push): add OPPO delivery diagnostics

push-service/src/main/java/com/xuqm/push/service/provider/OppoPushProvider.java

@@ -59,6 +59,7 @@ public class OppoPushProvider implements PushProvider {
             String messageId = appKey + "_" + System.currentTimeMillis();
             Map<String, Object> notification = new java.util.LinkedHashMap<>();
             notification.put("app_message_id", messageId);
+            notification.put("style", 1);
             notification.put("title", title);
             notification.put("content", body);
             notification.put("click_action_type", 0);
@@ -86,6 +87,9 @@ public class OppoPushProvider implements PushProvider {
             JsonNode json = objectMapper.readTree(response.body());
             int code = json.path("code").asInt(-1);
             if (response.statusCode() == 200 && code == 0) {
+                String vendorMessageId = json.path("data").path("messageId").asText("");
+                log.info("OPPO push accepted: appMessageId={} vendorMessageId={} channelId={} target={} response={}",
+                        messageId, vendorMessageId, channelId, maskToken(token), response.body());
                 return true;
             }
             log.error("OPPO push rejected: httpStatus={} code={} message={}",
@@ -139,6 +143,13 @@ public class OppoPushProvider implements PushProvider {
         return java.util.HexFormat.of().formatHex(digest);
     }
 
+    private static String maskToken(String token) {
+        if (token == null || token.length() <= 16) {
+            return "***";
+        }
+        return token.substring(0, 8) + "..." + token.substring(token.length() - 8);
+    }
+
     private String normalizeActionParameters(String payload) throws Exception {
         JsonNode parsed = runCatchingJson(payload);
         if (parsed != null && parsed.isObject()) {