vtcode-diff 0.166.0

Bounded structured text diffs and renderer-neutral terminal preview rows
Documentation 
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# vtcode-diff

`vtcode-diff` computes bounded, structured text diffs and lays them out as
renderer-neutral semantic rows. It supports unified and side-by-side previews,
Unicode display-width wrapping, intraline emphasis, bounded head/tail excerpts,
and parsing existing unified-diff text.

```rust
use vtcode_diff::{DiffDocument, DiffLayout, DiffOptions, LayoutOptions};

let diff = DiffDocument::between("old\n", "new\n", DiffOptions::default());
let rows = diff.layout(LayoutOptions {
    layout: DiffLayout::Unified,
    width: 80,
    ..LayoutOptions::default()
});
assert!(rows.iter().any(|row| row.marker == '+'));
```

For paired old/new columns, select the side-by-side layout:

```rust
let rows = diff.layout(LayoutOptions {
    layout: DiffLayout::SideBySide,
    width: 120,
    ..LayoutOptions::default()
});
```

Layout automatically falls back to unified below `min_side_by_side_width`. `max_rows` retains a
head/tail excerpt with an omission row and accurate document statistics.

Features:

- `serde`: serialization for public model types.
- `ratatui`: conversion helpers for Ratatui text rows.
- `ansi`: ANSI rendering with a caller-supplied palette.

Practical Myers is the default algorithm. Computation and intraline refinement
have separate timeouts, and costly intraline work is skipped for large inputs.

## Acknowledgments

The presentation architecture and underlying ideas (unified and side-by-side
terminal previews with intraline emphasis) were informed by
[OpenAI Codex](https://github.com/openai/codex), licensed under Apache-2.0.
This crate is an independent implementation for VT Code; no Codex source code
was copied.

Licensed under MIT or Apache-2.0, at your option.