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//! Higher-level input handling for Cotis applications.
//!
//! Render backends expose **providers** — per-frame raw input state from
//! [`cotis_utils::interactivity`] (`MouseProvider`, `SimpleKeyboardProvider`,
//! `SimpleTextProvider`). This crate turns that state into UI-friendly **managers**
//! that track hover, click edges, key edges, and scroll offsets across frames.
//!
//! # Typical integration
//!
//! Hold managers in your application state. Each frame, after layout has run:
//!
//! 1. Call `update(...)` on each manager with `delta_time` (seconds).
//! 2. Read signals: `is_clicked()`, `is_key_pressed(...)`, `get_position()`, etc.
//!
//! Element-scoped managers additionally need layout bounds from a manager that
//! implements [`cotis_utils::element_state::ElementBoundingBox`] (for example
//! `cotis-layout`'s `CotisLayoutManager`) and, for scrolling,
//! [`cotis_utils::element_state::ElementClipInternalSize`].
//!
//! [`CotisApp`](cotis::cotis_app::CotisApp) has blanket implementations of
//! [`mouse::ElementCursorState`], [`mouse::FullElementCursorState`], and
//! [`scroll::FullElementScrollState`] when the renderer implements
//! [`cotis_utils::interactivity::mouse::MouseProvider`] and the layout manager
//! implements the required element-state traits.
//!
//! # Modules
//!
//! - [`mouse`] — hover hit-testing, click edge detection, per-element click managers.
//! - [`keyboard`] — key edge detection and text input buffering.
//! - [`scroll`] — wheel/drag scrolling with optional momentum and clamping.
//!
//! # Examples
//!
//! ```rust,ignore
//! use cotis::cotis_app::CotisApp;
//! use cotis_interactivity::mouse::{ElementCursorState, MouseButtonElementManager, MouseClickingStrategy};
//! use cotis_interactivity::keyboard::KeyboardManager;
//! use cotis_utils::interactivity::mouse::MouseButton;
//! use cotis_utils::interactivity::keyboard::KeyboardKey;
//!
//! // Inside your per-frame UI logic:
//! // let hovered = app.is_hovered(element_id);
//! // click_manager.update(&app as &dyn FullElementCursorState, dt);
//! // keyboard_manager.update(app.render_borrow());
//! // if keyboard_manager.is_key_pressed(KeyboardKey::KeyEscape) { ... }
//! ```
pub