Mirrors code-go-ast-v1's chunker pattern. Snapshot test against
tests/fixtures/sample.c (function + typedef struct + typedef enum +
preprocessor) verifies symbol list + lang=c stamping.
Chunks produced (4 total):
- <top-level> glue: includes, defines, static vars, typedefs (lines 1-18)
- parse_record function (lines 20-23)
- print_record function (lines 25-27)
- main function (lines 29-33)
All chunks stamped with lang=c and chunker_version=code-c-ast-v1.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
