fix(rithmomachia): Fix TypeScript errors in playing guide modal

Fix PieceRenderer props and modal scope issues:
- Update PieceRenderer usage to match correct interface (type, color, value, size)
- Move PlayingGuideModal to correct scope within RithmomachiaGame component
- Remove duplicate modal render from ResultsPhase

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/web/src/arcade-games/rithmomachia/components/PlayingGuideModal.tsx

@@ -362,19 +362,10 @@ function PiecesSection() {
             >
               <svg viewBox="0 0 100 100" width="100%" height="100%">
                 <PieceRenderer
-                  piece={{
-                    id: `guide-${piece.type}`,
-                    color: 'W',
-                    type: piece.type,
-                    value: piece.type === 'P' ? undefined : 64,
-                    pyramidFaces: piece.type === 'P' ? [64, 49, 36, 25] : undefined,
-                    activePyramidFace: null,
-                    square: 'A1',
-                    captured: false,
-                  }}
-                  x={50}
-                  y={50}
-                  size={35}
+                  type={piece.type}
+                  color="W"
+                  value={piece.type === 'P' ? 'P' : 64}
+                  size={70}
                 />
               </svg>
             </div>

apps/web/src/arcade-games/rithmomachia/components/RithmomachiaGame.tsx

@@ -368,6 +368,9 @@ export function RithmomachiaGame() {
           </main>
         </div>
       </StandardGameLayout>
+
+      {/* Playing Guide Modal - persists across all phases */}
+      <PlayingGuideModal isOpen={isGuideOpen} onClose={() => setIsGuideOpen(false)} />
     </PageWithNav>
   )
 }
@@ -3070,9 +3073,6 @@ function ResultsPhase() {
           🚪 Exit
         </button>
       </div>
-
-      {/* Playing Guide Modal - persists across all phases */}
-      <PlayingGuideModal isOpen={isGuideOpen} onClose={() => setIsGuideOpen(false)} />
     </div>
   )
 }