refactor(slay-the-spire-like): reorganize combat system files

Move combat factory to a dedicated combat directory and update
`buildCombatState` to use `IPlayerState` and `IPlayerDeck` instead of
deriving them from `RunState` and `GridInventory`.

src/samples/slay-the-spire-like/system/combat/factory.ts

@@ -2,22 +2,19 @@ import {
   CombatState,
   EffectTable,
   EnemyEntity,
+  IPlayerDeck,
+  IPlayerState,
   PlayerEntity,
-} from "../combat/types";
-import { generateDeckFromInventory } from "../deck";
-import { GridInventory } from "../grid-inventory";
-import { GameItemMeta } from "../grid-inventory/types";
+} from "./types";
 import { EffectData, EncounterData, EnemyData, IntentData } from "../types";
-import { CombatEncounterState, RunState } from "./types";
 
 export function buildCombatState(
-  runState: RunState,
-  inventory: GridInventory<GameItemMeta>,
-  encounter: CombatEncounterState,
+  playerState: IPlayerState,
+  deck: IPlayerDeck,
+  encounter: EncounterData,
 ): CombatState {
-  const deck = generateDeckFromInventory(inventory);
-  const player = createPlayerEntity(runState, deck);
-  const enemies = createEnemyEntities(encounter.data);
+  const player = createPlayerEntity(playerState, deck);
+  const enemies = createEnemyEntities(encounter);
 
   return {
     enemies,
@@ -29,12 +26,6 @@ export function buildCombatState(
   };
 }
 
-export function buildCombatEncounterState(
-  data: EncounterData<"minion" | "elite">,
-): CombatEncounterState {
-  return { data, blocked: false };
-}
-
 function createEnemyEntities(encounter: EncounterData): EnemyEntity[] {
   const enemies: EnemyEntity[] = [];
   let instanceCounter = 0;
@@ -96,18 +87,18 @@ function buildEffectTable(buffs: readonly [EffectData, number][]): EffectTable {
 }
 
 function createPlayerEntity(
-  runState: RunState,
-  deck: ReturnType<typeof generateDeckFromInventory>,
+  playerState: IPlayerState,
+  deck: IPlayerDeck,
 ): PlayerEntity {
   return {
     id: "player",
-    hp: runState.currentHp,
-    maxHp: runState.maxHp,
-    isAlive: runState.currentHp > 0,
+    hp: playerState.hp,
+    maxHp: playerState.maxHp,
+    isAlive: playerState.hp > 0,
     energy: 3,
     maxEnergy: 3,
     deck,
-    itemEffects: {},
+    itemEffects: playerState.itemEffects,
     effects: {},
   };
 }

src/samples/slay-the-spire-like/system/combat/types.ts

@@ -18,6 +18,12 @@ export type CombatEntity = {
   isAlive: boolean;
 };
 
+export interface IPlayerState {
+  hp: number;
+  maxHp: number;
+  itemEffects: Record<string, EffectTable>;
+}
+
 export interface IPlayerDeck {
   cards: Record<string, Part<{ cardData: CardData; itemId: string }>>;
   regions: {