feat: add live replays and PostgreSQL maintenance tools

- Stream compact live replay updates across local and clustered dashboards.
- Render responsive snake bodies as SVG paths with aligned custom icons.
- Add cache-busted assets, replay fallback routes, and live-follow playback.
- Support PostgreSQL benchmark sampling and idempotent SQLite migration.
- Add dry-run cleanup for old low-quality PostgreSQL replay payloads.
- Reward safe perimeter lanes and bump Prism to version 1.5.0.
- Add backend, migration, dashboard, and perimeter regression coverage.

snakes/strategies/prism.py

@@ -1,4 +1,4 @@
-"""PrismBattleSnake_GPT_5_6_Sol v1.4.0
+"""PrismBattleSnake_GPT_5_6_Sol v1.5.0
 
 Built on ApexBattleSnake v1.0.0.  All strategic logic is inherited.
 Performance improvement: all spatial primitives (flood fill, territory,
@@ -54,7 +54,7 @@ class PrismBattleSnake_GPT_5_6_Sol(
   BitboardSpatialMixin,
   ApexBattleSnake,
 ):
-  VERSION = "1.4.0"
+  VERSION = "1.5.0"
 
   def __init__(self) -> None:
     super().__init__()