Why a mounted filesystem was removed, surfaced on the removed descriptor so an
app can say why it vanished instead of failing mutely (auth-mount §"mount-remove"
/ AM2-4):
revoked — a durable grant was revoked (revokeGrant / consent withdrawal);
unshared — the granting user's membership was removed (or downgraded out);
signed-out — sign-out tore down every mount;
unmounted — the app's own unmountSpace (or region teardown);
deleted — the space was soft-deleted.
An older host that sends no reason is read as 'revoked' (most conservative).
Why a mounted filesystem was removed, surfaced on the removed descriptor so an app can say why it vanished instead of failing mutely (auth-mount §"mount-remove" / AM2-4):
revoked— a durable grant was revoked (revokeGrant / consent withdrawal);unshared— the granting user's membership was removed (or downgraded out);signed-out— sign-out tore down every mount;unmounted— the app's ownunmountSpace(or region teardown);deleted— the space was soft-deleted. An older host that sends no reason is read as'revoked'(most conservative).