//! Emit the synthetic AcroForm corpus to disk.
//!
//! Usage: `cargo run -p pdfluent-forms --example gen_acroform_corpus -- <out_dir>`
//!
//! Writes one `<category>.pdf` per support-contract category. Used to feed the
//! external-compatibility validator (`scripts/forms/verify_acroform_output.py`,
//! pikepdf-based) and the language-binding tests. The same fixtures are
//! exercised in-process by `tests/corpus_gate.rs`.