Move 136 prototype mixins under mixins/domain, json-export, and
runtime/* so the package root stays navigable. Manifest assign order
is unchanged; apply-platform-mixins and runtime registry paths updated.
Co-authored-by: Cursor <[email protected]>
Move ~30k lines from platform-pearcord-platform-class.js into dedicated
platform-* mixins including view(), guild wire/sync, JSON export surface,
and domain APIs. Manifest grows to 136 rows with 76 runtime mixins; class
spine retains constructor, session lifecycle, openGuild, and close (~938 lines).
Co-authored-by: Cursor <[email protected]>