feat(sync): 同步 Wavelet 推送审计、OTel schema 与前端字体

自定义 Webhook 在 HTTP 200 但业务 errcode 非零时记为失败，任务日志记录上游响应。
OTel Resource 改为 NewSchemaless，避免 semconv 与 SDK 版本冲突。
前端用 next/font 自托管 Inter，并忽略浏览器扩展改写 body 引起的 hydration 警告。

internal/apps/admin/push/push_test.go

@@ -52,12 +52,12 @@ type mockPusher struct {
 	sentTgt  string
 }
 
-func (m *mockPusher) Send(ctx context.Context, cfg pkgpush.Config, target string, body map[string]any, template string, ext map[string]any) error {
+func (m *mockPusher) Send(ctx context.Context, cfg pkgpush.Config, target string, body map[string]any, template string, ext map[string]any) (string, error) {
 	m.mu.Lock()
 	defer m.mu.Unlock()
 	m.sentBody = body
 	m.sentTgt = target
-	return nil
+	return "", nil
 }
 
 func (m *mockPusher) ValidateConfig(cfg pkgpush.Config) error {

internal/apps/admin/push/routers.go

@@ -284,7 +284,7 @@ func TestPush(c *gin.Context) {
 		keyContent: "当您收到这条消息，说明当前渠道连通性测试通过。",
 		keyLevel:   defaultLevelInfo,
 	}
-	if err := pusher.Send(c.Request.Context(), req.Config, req.Target, testBody, "", nil); err != nil {
+	if _, err := pusher.Send(c.Request.Context(), req.Config, req.Target, testBody, "", nil); err != nil {
 		response.AbortBadRequest(c, err.Error())
 		return
 	}

internal/apps/admin/push/tasks.go

@@ -93,13 +93,16 @@ func (h *PushHandler) Execute(ctx context.Context, payload []byte) (*task.TaskRe
 
 	// 执行真正的消息推送，扁平化为原始 json 格式
 	flatBody := req.Body.Flatten()
-	err = pusher.Send(ctx, req.Config, req.Target, flatBody, req.Template, nil)
+	upstreamResp, err := pusher.Send(ctx, req.Config, req.Target, flatBody, req.Template, nil)
 
 	title := req.Body.Title
 	content := req.Body.Content
 
 	if err != nil {
 		task.AppendLog(ctx, "消息推送失败 (标题: %s): %v", title, err)
+		if upstreamResp != "" {
+			task.AppendLog(ctx, "上游返回: %s", upstreamResp)
+		}
 		if task.IsFinalAttempt(ctx) {
 			h.recordHistory(ctx, req, "failed", err.Error())
 		}
@@ -107,6 +110,9 @@ func (h *PushHandler) Execute(ctx context.Context, payload []byte) (*task.TaskRe
 	}
 
 	task.AppendLog(ctx, "消息推送成功 (标题: %s, 内容摘要: %s)", title, content)
+	if upstreamResp != "" {
+		task.AppendLog(ctx, "上游返回: %s", upstreamResp)
+	}
 	h.recordHistory(ctx, req, "success", "")
 
 	return &task.TaskResult{