- bash: Add file existence check before reading
- bash: Improve exit code handling for invalid JSON results
- bash: Expand detect_language to support all 42 languages
- python: Use detect_language() instead of non-existent EXT_MAP
- python: Remove exit_on_error param that doesn't exist
- python: Replace read_file test with validate_keys existence check
- Julia: Rename test() to run_test() to avoid name collision
- Julia: Use lambda syntax instead of do-block for cleaner execution
- Lua: Fix signature format test - verify structure instead of counting colons
- OCaml: Use apt-get instead of failing setup-ocaml@v2 action
- Clojure: Use 'clojure' instead of 'clj -M' for standalone script
- Dart: Add proper pubspec.yaml with SDK environment constraint
- Julia: Install SHA package before running tests
- Lua: Use lua5.4 explicitly, add awk for portable HMAC output parsing
- Perl: Install libjson-perl and libwww-perl dependencies
- Bash: Make un.sh executable before test
- OCaml: Add str.cma and unix.cma for Str module support
- OCaml unit test: Remove Str dependency with pure string search
