chore: update a3s-search to v1.1 with obscura feature

Author: claude

core/Cargo.toml

@@ -16,7 +16,7 @@ path = "src/lib.rs"
 a3s-common = { version = "0.1", path = "../../common" }
 a3s-memory = { version = "0.1.1", path = "../../memory" }
 a3s-lane = { version = "0.4", path = "../../lane" }
-a3s-search = { version = "1.0", path = "../../search", default-features = false }
+a3s-search = { version = "1.1", path = "../../search", default-features = false, features = ["obscura"] }
 a3s-ahp = { version = "2.0", path = "../../ahp", optional = true, features = ["http", "websocket", "unix-socket"] }
 
 # Async runtime