feat(fuzz): add awk_fuzz target for awk builtin#1112
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Add fuzz target for the awk builtin which implements a full AWK interpreter with pattern matching, expressions, functions, and field separation — many code paths to explore. The target splits fuzz input into an AWK program (first line) and input data (remainder), then exercises the awk builtin with both default and colon field separators through the full interpreter with tight resource limits. Includes scaffold tests validating the awk builtin handles valid programs, invalid syntax, BEGIN/END blocks, malformed regex, and field separators without panicking. Closes #1095
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Summary
awkbuiltin which implements a full AWK interpreter with pattern matching, expressions, functions, and field separationChanges
fuzz/fuzz_targets/awk_fuzz.rs: fuzz targetfuzz/Cargo.toml: added[[bin]]entry forawk_fuzztests/awk_fuzz_scaffold_tests.rs: 5 scaffold tests (valid program, invalid syntax, BEGIN/END, regex, field separator)Test plan
cargo test --test awk_fuzz_scaffold_tests— 5 tests passcargo clippy --all-targets --all-features -- -D warnings— cleancargo fmt --check— cleanCloses #1095