fix agents

fixtures/basic.txt

@@ -1 +1 @@
-create a comment on https://github.com/pullfrogai/scratch/pull/29 that says ribbit ribbit
+create a comment on https://github.com/pullfrogai/scratch/pull/29 that says GEM ribbit

mcp/config.ts

@@ -10,7 +10,7 @@ import { ghPullfrogMcpName } from "./index.ts";
 
 export type McpName = typeof ghPullfrogMcpName;
 
-export type McpConfigs = Record<McpName, McpServerConfig>;
+export type McpConfigs = Record<McpName, McpStdioServerConfig>;
 
 export function createMcpConfigs(githubInstallationToken: string): McpConfigs {
   const repoContext = parseRepoContext();

play.ts

@@ -24,7 +24,7 @@ export async function run(
 
     const inputs: Required<Inputs> = {
       prompt,
-      agent: "cursor",
+      agent: "gemini",
       ...flatMorph(agents, (_, agent) =>
         agent.inputKeys.map((inputKey) => [inputKey, process.env[inputKey.toUpperCase()]])
       ),