fix: resetGame button doesn't fully reset game state

src/lib/game/stores/combat-reset.ts

@@ -0,0 +1,67 @@
+// ─── Combat Reset Helper ───────────────────────────────────────────────────────
+// Generates the full default combat store state for resetCombat().
+// Keeps combatStore.ts under the 400-line limit.
+
+import type { RuntimeActiveGolem } from '../types';
+import { getFloorMaxHP } from '../utils';
+import { generateSpireFloorState, getRoomsForFloor } from '../utils/spire-utils';
+import { makeInitialSpells } from './combat-actions';
+import type { CombatState } from './combat-state.types';
+
+export function createDefaultCombatState(
+  startFloor: number,
+  spellsToKeep: string[] = [],
+): Partial<CombatState> {
+  const startSpells = makeInitialSpells(spellsToKeep);
+  const seed = startFloor * 12345;
+  const rooms = getRoomsForFloor(startFloor, seed);
+  const startRoom = generateSpireFloorState(startFloor, 0, rooms, 0);
+
+  return {
+    currentFloor: startFloor,
+    floorHP: getFloorMaxHP(startFloor),
+    floorMaxHP: getFloorMaxHP(startFloor),
+    maxFloorReached: startFloor,
+    activeSpell: 'manaBolt',
+    currentAction: 'meditate',
+    castProgress: 0,
+    spireMode: false,
+    currentRoom: startRoom,
+    clearedFloors: {},
+    climbDirection: null,
+    isDescending: false,
+    startFloor,
+    exitFloor: startFloor,
+    currentRoomIndex: 0,
+    roomsPerFloor: rooms,
+    runId: 0,
+    descentPeak: null,
+    roomResetState: {},
+    clearedRooms: {},
+    isDescentComplete: false,
+    golemancy: {
+      golemDesigns: {},
+      golemLoadout: [],
+      activeGolems: [] as RuntimeActiveGolem[],
+      lastSummonFloor: 0,
+    },
+    equipmentSpellStates: [],
+    weaponCastProgress: {},
+    comboHitCount: 0,
+    floorHitCount: 0,
+    meleeSwordProgress: {},
+    guardianShield: 0,
+    guardianShieldMax: 0,
+    guardianBarrier: 0,
+    guardianBarrierMax: 0,
+    spells: startSpells,
+    activityLog: [],
+    achievements: {
+      unlocked: [],
+      progress: {},
+    },
+    totalSpellsCast: 0,
+    totalDamageDealt: 0,
+    totalCraftsCompleted: 0,
+  };
+}