Core library for travelagent — the data model, VCS backends, forge abstraction, and session persistence that the TUI and MCP crates build on.

What lives here

• [model] — review data types ([model::review::ReviewSession], [model::review::Comment], [model::diff::DiffFile], [model::tour] structures).
• [vcs] — VCS-backend trait and git / hg / jj implementations (see [vcs::VcsBackend]).
• [forge] — trait and types for remote forges used by the GitHub/GitLab crates (see [forge::ForgeBackend]).
• [config] — user config.toml loader with warnings-on-error.
• [persistence] — on-disk ReviewSession save/load (see [persistence::storage::save_session] / [persistence::storage::load_session]).
• [diff] — diff parsing and word-level intra-line diffs.
• [risk] — risk scoring for tour stops.
• [syntax] — syntect-backed syntax highlighting.
• [trvignore] — gitignore-style filtering.
• [review_config] — per-repo .travelagent/review.toml loader for reviewer-side sparring settings (e.g. hidden_from_reviewer).
• [error] — the [error::TrvError] enum and [error::Result] alias used across the workspace.

The crate never performs terminal I/O, HTTP, or clap parsing — those concerns live in the TUI, forge, and MCP crates respectively.