Augur for Exboss

Fixed countdown audio. The countdown clips (5, 4, 3, 2, 1) were playing Chinese instead of English because of a typo in a byte-encoded label.

Added Adds Spawning and Stack & Drop Circle. Two labels the upstream uses that this pack was missing.

Future-proofed countdown labels. Upstream Engine.lua now does a two-step lookup for countdowns and tries the new format before the legacy one. Registered both forms so the override holds either way.

74 to 79 labels covered.