refactor(core): decouple run settling from terminal status transition

Resolve #running before the terminal statuschange so the settle signal can
never be lost to re-entrant listeners. Hooks keep middleware semantics:
a throwing hook fails the run; integrations that don't want this should
suppress errors in their own hooks. Also make suppress() async-aware so
rejected promises (e.g. showMask) are actually caught.

packages/core/src/utils/index.ts

@@ -133,9 +133,9 @@ export function assert(condition: unknown, message?: string, silent?: boolean):
 /**
  * Suppress errors from a function.
  */
-export function suppress<T>(fn: () => T): T | undefined {
+export async function suppress<T>(fn: () => T | Promise<T>): Promise<Awaited<T> | undefined> {
 	try {
-		return fn()
+		return await fn()
 	} catch (error) {
 		console.error(error)
 		return undefined