[codeBelt]

Svelte consumers could read stale values immediately after changing a store because the adapter used batched notifications. Deliver snapshots synchronously to satisfy the Svelte store contract while keeping ordinary core subscriptions batched.

Subscribe before the initial callback to observe mutations it makes, stop delivery after unsubscription during an active notification, and clean up if the initial callback throws. Add Svelte 5 browser regressions for input caret behavior, computed values, keyed lists, and repeated component cleanup. Update public documentation and include a patch changeset for 0.8.1.

Validation:

• 553 unit tests passed.
• 106 browser tests passed across Chromium, Firefox, and WebKit, including all 12 Svelte cases; 8 existing clipboard cases skipped as expected.
• Confirmed the timing regression fails on the original adapter and passes with the fix.
• TypeScript/Svelte checks, library build, Svelte example check/build, scoped lint, and frozen-lockfile install passed.
• Svelte browser and component type checks are included in existing CI commands.