fix(chase): align core chase types with spec

Made-with: Cursor

src/game/chase/types.ts

@@ -2,13 +2,16 @@ export type NodeId = string;
 
 export type Difficulty = "easy" | "normal" | "hard";
 
-export type GameStatus = "idle" | "running" | "won" | "lost";
+export type GameStatus = "setup" | "playing" | "win" | "lose";
 
 export interface GraphNode {
   id: NodeId;
+  q: number;
+  r: number;
   neighbors: NodeId[];
 }
 
 export interface GameGraph {
   nodes: Record<NodeId, GraphNode>;
+  edgeList: Array<[NodeId, NodeId]>;
 }