20260607 完成transport预热、roa cache和finalize长尾优化

src/validation/tree.rs

@@ -22,6 +22,8 @@ pub struct TreeRunConfig {
     pub build_ccr_accumulator: bool,
     /// Reuse accepted ROA validation outputs from previous VCIR when explicitly enabled.
     pub enable_roa_validation_cache: bool,
+    /// Prefetch transport requests from the previous run before normal tree traversal.
+    pub enable_transport_request_prefetch: bool,
 }
 
 impl Default for TreeRunConfig {
@@ -33,6 +35,7 @@ impl Default for TreeRunConfig {
             persist_vcir: true,
             build_ccr_accumulator: true,
             enable_roa_validation_cache: false,
+            enable_transport_request_prefetch: false,
         }
     }
 }