20260418 优化去掉冗余存储repo object，mix quick最快170s

src/fetch/http.rs

@@ -470,7 +470,8 @@ mod tests {
         })
         .expect("http");
 
-        let (_, profile_short, timeout_short) = http.client_for_uri("https://example.test/root.tal");
+        let (_, profile_short, timeout_short) =
+            http.client_for_uri("https://example.test/root.tal");
         assert_eq!(profile_short, "short");
         assert_eq!(timeout_short, Duration::from_secs(3));