evidence/prompt_outputs/20260816.130124.690Z_toml_build

RESULT: SUCCESS

FILES CHANGED:
- cmd/toml-decoder/main.go

SUMMARY:
- Added rejection of unexpected command-line arguments.
- `go test`, `go test -race`, `go vet`, and build pass.
- Full TOML suite passes: 205 valid and 474 invalid, zero failures.

BLOCKERS:
- None