refactor: remove memory slot system and Memories section from PrestigeTab

- Remove deepMemory prestige upgrade from constants/prestige.ts
- Remove Memory interface from types.ts
- Remove memorySlots, memories, addMemory, removeMemory, clearMemories from prestigeStore.ts
- Remove deepMemory/memory references from gameLoopActions.ts
- Remove MemoriesCard component and its usage from PrestigeTab.tsx
- Remove memorySlots display from LoopStatsSection.tsx
- Update tests: store-actions-combat-prestige.test.ts, PrestigeTab.test.ts, tick-integration.test.ts

The memory slot system was fully wired but had no gameplay mechanic — addMemory()
was never called outside tests. This removes dead code across 9 files.

docs/circular-deps.txt

@@ -1,11 +1,13 @@
 # Circular Dependencies
-Generated: 2026-05-23T17:29:49.986Z
-Found: 4 circular chain(s) — these MUST be fixed before modifying involved files.
+Generated: 2026-05-24T12:34:53.927Z
+Found: 6 circular chain(s) — these MUST be fixed before modifying involved files.
 
-1. Processed 132 files (1.4s) (3 warnings)
-2. 1) stores/gameStore.ts > stores/gameActions.ts
-3. 2) stores/gameStore.ts > stores/gameLoopActions.ts
-4. 3) stores/gameStore.ts > stores/tick-pipeline.ts
+1. Processed 132 files (1.4s) (2 warnings)
+2. 1) utils/floor-utils.ts > utils/room-utils.ts > utils/enemy-utils.ts
+3. 2) utils/floor-utils.ts > utils/room-utils.ts
+4. 3) stores/gameStore.ts > stores/gameActions.ts
+5. 4) stores/gameStore.ts > stores/gameLoopActions.ts
+6. 5) stores/gameStore.ts > stores/tick-pipeline.ts
 
 ## How to fix
 1. Identify which import in the chain can be extracted to a shared types/utils file.