/**
 * Deterministic Python source reflow — makes native (`format:false`) emitter output already
 * conformant to `ruff format` (Black-style) so running the external formatter is a byte-level
 * no-op. This closes the "optional external formatter post-pass" reproducibility hole (issue #238)
 * for Python: `format:true` and `format:false` then produce identical bytes.
 *
 * Scope is deliberately narrow — it only reproduces the two style rules the emitter actually
 * diverges on:
 *   1. 88-column line wrapping (Black's right-hand-split, with optional-parentheses omission and
 *      the magic trailing comma on exploded bracket bodies).
 *   2. Blank-line normalization (Black's empty-line rules around defs/classes and inside blocks).
 *
 * It is intentionally conservative: any physical line it does not fully understand (unbalanced
 * brackets, a trailing comment, string content) is passed through unchanged. The formatter-
 * idempotency guard (scripts/idempotency-guard.mjs) is the backstop — any residual drift fails
 * validate:fixtures loudly, so an approximate transform can never silently ship.
 */
/** Apply the full reflow (quotes, wrapping, then blank-line normalization) to an emitted file. */
export declare function formatPythonSource(src: string): string;
/** Reflow every over-long code line, leaving docstring/string content untouched. */
export declare function wrapLongLines(src: string): string;