fix(know-your-world): fix TypeScript build errors

- Fix MapData import in GameInfoPanel.tsx (import from types, not maps)
- Fix MapData import in test files
- Fix currentRegionName type (handle undefined with ?? null)

These errors were blocking the Docker build in CI.

apps/web/src/arcade-games/know-your-world/components/GameInfoPanel.test.tsx

@@ -2,7 +2,7 @@ import { describe, it, expect, vi, beforeEach } from 'vitest'
 import { render, screen, waitFor } from '@testing-library/react'
 import userEvent from '@testing-library/user-event'
 import { GameInfoPanel } from './GameInfoPanel'
-import type { MapData } from '../maps'
+import type { MapData } from '../types'
 
 // Mock the context
 vi.mock('@/contexts/ThemeContext', () => ({

apps/web/src/arcade-games/know-your-world/components/GameInfoPanel.tsx

@@ -4,7 +4,7 @@ import { useEffect } from 'react'
 import { css } from '@styled/css'
 import { useTheme } from '@/contexts/ThemeContext'
 import { useKnowYourWorld } from '../Provider'
-import type { MapData } from '../maps'
+import type { MapData } from '../types'
 
 interface GameInfoPanelProps {
   mapData: MapData

apps/web/src/arcade-games/know-your-world/components/PlayingPhase.test.tsx

@@ -1,7 +1,7 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest'
 import { render, screen } from '@testing-library/react'
 import { PlayingPhase } from './PlayingPhase'
-import type { MapData } from '../maps'
+import type { MapData } from '../types'
 
 // Mock dependencies
 vi.mock('../Provider', () => ({

apps/web/src/arcade-games/know-your-world/components/PlayingPhase.tsx

@@ -21,7 +21,7 @@ export function PlayingPhase() {
 
   // Get the display name for the current prompt
   const currentRegionName = state.currentPrompt
-    ? mapData.regions.find((r) => r.id === state.currentPrompt)?.name
+    ? mapData.regions.find((r) => r.id === state.currentPrompt)?.name ?? null
     : null
 
   // Debug logging