fix(p10-1a-1): tighten kebab-parse-code manifest + tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/kebab-parse-code/tests/lang.rs

@@ -48,6 +48,7 @@ fn special_filenames_map_to_identifiers() {
     assert_eq!(code_lang_for_path(Path::new("Dockerfile")), Some("dockerfile"));
     assert_eq!(code_lang_for_path(Path::new("foo.dockerfile")), Some("dockerfile"));
     assert_eq!(code_lang_for_path(Path::new("Makefile")), Some("make"));
+    assert_eq!(code_lang_for_path(Path::new("GNUmakefile")), Some("make"));
 }
 
 #[test]

crates/kebab-parse-code/tests/repo.rs

@@ -46,7 +46,7 @@ fn detect_repo_walks_up_to_git_dir() {
 }
 
 #[test]
-fn detect_repo_caches_per_path_call_for_repeated_files_in_same_repo() {
+fn detect_repo_returns_consistent_metadata_for_paths_in_same_repo() {
     let tmp = TempDir::new().unwrap();
     let repo_root = tmp.path().join("myrepo");
     fs::create_dir_all(&repo_root).unwrap();