refactor(ariadne): use conventional Cargo layout

src/ariadne/BUILD

@@ -3,19 +3,19 @@ load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_test")
 rust_library(
     name = "ariadne_lib",
     crate_name = "ariadne",
-    srcs = ["lib.rs"],
+    srcs = ["src/lib.rs"],
 )
 
 rust_test(
     name = "ariadne_lib_test",
-    srcs = ["lib_test.rs"],
+    srcs = ["tests/lib.rs"],
     deps = [":ariadne_lib"],
 )
 
 rust_binary(
     name = "ariadne",
     crate_name = "ariadne_cli",
-    srcs = ["main.rs"],
+    srcs = ["src/main.rs"],
     deps = [":ariadne_lib"],
 )
 

src/ariadne/Cargo.toml

@@ -3,15 +3,4 @@ name = "ariadne"
 version = "0.1.0"
 edition = "2024"
 
-[lib]
-path = "lib.rs"
-
-[[bin]]
-name = "ariadne"
-path = "main.rs"
-
-[[test]]
-name = "lib_test"
-path = "lib_test.rs"
-
 [dependencies]