- Created token-to-string mapping array parallel to Token enum in token.c
- Implemented TokenStream with lookahead buffering for proper tokenization
- Implemented tokenstream_open/close/next functions with support for:
- Keywords (module, import, void)
- Symbols (parentheses, brackets, comma, semicolon)
- Identifiers (alphanumeric starting with letter or underscore)
- Comment skipping (// style)
- Whitespace handling
- Added token_to_string function to token.h for token inspection
- Created comprehensive test suite (15 tests) covering all token types and edge cases
- All tests pass.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>