Module render 

Render-time plugin contract — synchronous highlight requests.

[ARCH] Lifecycle hooks (on_issue_created, …) and structured events (PluginEvent) handle async/asynchronous workflows. Render-time work is different: the host is in the middle of drawing a frame and needs Vec<TokenSpan> now with per-call latency in the low microseconds.

Plugins implement Plugin::highlight (see crate::traits::core). The host calls it from a cache-miss path; the host is expected to cache aggressively so the Lua roundtrip happens once per (lang, content) pair, not once per frame.

Structs

HighlightRequest

What the host asks a highlight provider to render.

HighlightResponse

What the plugin returns when it wants to highlight.

Rgb

24-bit RGB colour. Maps cleanly onto ratatui::Color::Rgb.

TokenSpan

One styled run of text in a highlight response.