refactor: 移除 shadow results 相关模块和接口

apps/aether-gateway/src/handlers/admin/observability/monitoring/trace.rs

@@ -8,13 +8,29 @@ use aether_admin::observability::monitoring::{
     build_admin_monitoring_trace_provider_stats_payload_response,
     build_admin_monitoring_trace_request_payload_response, parse_admin_monitoring_attempted_only,
 };
-use aether_data_contracts::repository::candidates::RequestCandidateStatus;
+use aether_data_contracts::repository::candidates::{DecisionTrace, RequestCandidateStatus};
 use axum::{
     body::Body,
     response::{IntoResponse, Response},
 };
 use tracing::debug;
 
+const HIDDEN_TRACE_SKIP_REASONS: &[&str] = &["format_conversion_disabled"];
+
+fn filter_admin_monitoring_trace_candidates(mut trace: DecisionTrace) -> DecisionTrace {
+    trace.candidates.retain(|item| {
+        let skip_reason = item
+            .candidate
+            .skip_reason
+            .as_deref()
+            .map(str::trim)
+            .filter(|value| !value.is_empty());
+        !skip_reason.is_some_and(|reason| HIDDEN_TRACE_SKIP_REASONS.contains(&reason))
+    });
+    trace.total_candidates = trace.candidates.len();
+    trace
+}
+
 pub(super) async fn build_admin_monitoring_trace_request_response(
     state: &AdminAppState<'_>,
     request_context: &AdminRequestContext<'_>,
@@ -51,6 +67,7 @@ pub(super) async fn build_admin_monitoring_trace_request_response(
             attempted_only,
         ));
     };
+    let trace = filter_admin_monitoring_trace_candidates(trace);
 
     Ok(build_admin_monitoring_trace_request_payload_response(
         &trace,