refactor: drop dead JS code
Delete the handle-layer accessors, helpers and bun options (Svelte, MDX, pragmas, parser callbacks) that nothing reaches, so clippy passes with warnings denied. Variants that bun's printer still branches on keep an expect with the reason, and bun's tree enums allow unread payloads, so bun's fixes still apply as diffs.
Parent46483f3
23 files changed+59-1460
StackedSplit