`useSessionUIStore.archiveSessions` declared an `options` parameter and
discarded it, so any caller passing a captured runtime key got a silent
no-op. The archive path also never rechecked the runtime, letting a
response produced by a previous runtime reconcile the live and global
session stores of the runtime the user had switched to.
Move the batch to a canonical `archiveSessions()` action, add an optional
`expectedRuntimeKey` to `archiveSession()`, `patchSessionMetadata()`, and
`cleanupReviewMetadataBeforeDelete()`, and recheck that key before every
store reconciliation. A guarded batch stops at the first observed runtime
change: server-confirmed sessions stay in `archivedIds` and every
unconfirmed ID is returned in `failedIds`, so existing partial-failure
feedback stays truthful. Callers that pass no key keep prior behavior.
Type the store option as `ArchiveSessionsOptions` instead of
`Record<string, unknown>`, since the loose type allowed the drop.
Alexandre Reyes Martins
2e8fc6e192