//! Crawler subsystem.
//!
//! Runs as its own binary (`src/bin/crawler.rs`) and shares `domain`,
//! `repo`, and `storage` with the API binary. Layering mirrors the
//! `Storage` trait pattern: callers depend on the `source::Source`
//! trait, not on a concrete site; new sites plug in as additional
//! impls without touching the job runner.
//!
//! Submodules:
//! - [`browser`]: launches and pools Chromium via `chromiumoxide`.
//!   First run downloads a known-good build via the `fetcher` feature.
//! - [`source`]: the `Source` trait. Per-site impls live alongside it.
//! - [`jobs`]: job kinds, queue wrapper, handler dispatch.
//! - [`diff`]: change detection — new / updated / dropped semantics.

pub mod browser;
pub mod content;
pub mod diff;
pub mod jobs;
pub mod rate_limit;
pub mod session;
pub mod source;