Crate lingxia_shell

Expand description

Platform-neutral semantic core for the LingXia host shell.

This crate owns app-declared activators, user-owned Pins, validation, Pin persistence, and deterministic state transitions. It deliberately has no dependency on lxapps, the surface graph, browser bookmarks, Logic, or platform UI. Host integration resolves metadata and executes activation; platform skins only render resolved snapshots and report stable ids.