Crate fret_interaction 

Shared interaction building blocks for editor-grade UI.

This crate intentionally lives under ecosystem/:

• it is policy-heavy and iteration-friendly,
• it is meant to be reused by multiple ecosystem surfaces (imui, node graphs, docking UX),
• it should not become a hard mechanism-layer contract in crates/fret-ui prematurely.

Design goals:

• Provide small, testable state machines and math helpers.
• Avoid domain semantics (no node/edge graph types; no app-specific command wiring).
• Support multiple coordinate spaces via explicit transform helpers (screen-space vs canvas-space).

Modules

dpi

DPI helpers shared by interaction primitives.

drag

Drag gesture helpers (thresholding and deltas).