feat: Implement image caching for game covers, enhance frontend game list item layout, add Factorio to the game list, and ignore the cache directory.

frontend/src/GameFilter.tsx

@@ -125,20 +125,26 @@ export function GameFilter() {
                   style={{
                     textDecoration: "none",
                     color: "inherit",
-                    display: "block",
+                    display: "flex",
+                    justifyContent: "space-between",
+                    alignItems: "center",
                   }}
                 >
-                  <strong>{game}</strong>
-                  <div
-                    style={{
-                      fontSize: "0.9em",
-                      color: "#4caf50",
-                      marginTop: "0.5rem",
-                    }}
-                  >
-                    ✓ All {selectedPeople.size} selected would play
+                  <div>
+                    <strong>{game}</strong>
+                    <div
+                      style={{
+                        fontSize: "0.9em",
+                        color: "#4caf50",
+                        marginTop: "0.5rem",
+                      }}
+                    >
+                      ✓ All {selectedPeople.size} selected would play
+                    </div>
+                  </div>
+                  <div style={{ width: "100px", marginLeft: "1rem" }}>
+                    <GameImage game={game} />
                   </div>
-                  <GameImage game={game} />
                 </Link>
               ))}
             </ul>