Adds HeykelSavasiContext runtime logic for Task 4.2: per-team statue
break progress/winner tracking (extracted into a pure, testable
StatueProgressState), OnDestructibleDied wiring against the base
MiniGameContext's existing Destructible->Died auto-subscription, and
SpawnStatueAsync which spawns the next statue (561) + 4 guards (580)
via the map initializer using placeholder line-of-statues coordinates.
OnGameStartAsync now spawns each team's first statue after the warp.
Adds the HeykelSavasiTeam enum (None/Red/Blue) and the HeykelSavasiContext
skeleton (subclass of MiniGameContext) with team registration
(AssignTeam/GetTeam/PlayersOf/TeamCount) and a join-balance rule
(|Red-Blue| <= 2 after the prospective join), exposed as a pure static
IsJoinAllowed for fast unit testing without constructing the full context.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
