//! Comprehensive ASS specification coverage integration tests
//!
//! Tests end-to-end parsing and analysis of complex ASS scripts that exercise
//! the full breadth of the ASS specification. Ensures compatibility with
//! libass extensions, Aegisub features, and `TCax` format variations.
//!
//! # Coverage Areas
//!
//! - All event types: Dialogue, Comment, Picture, Sound, Movie, Command
//! - Complete style override tag set including drawing commands
//! - Embedded media sections: [Fonts] and [Graphics] with UU-encoding
//! - Complex animation sequences with timing functions
//! - Unicode text handling and bidirectional content
//! - Performance validation for large scripts
//!
//! The test cases are organized into focused submodules under `spec_coverage/`,
//! with the shared comprehensive script fixture living in `common`.