switch to start_dependency_installation and await_dependency_installation, fix action play.ts repo

agents/shared.ts

@@ -7,7 +7,6 @@ import { pipeline } from "node:stream/promises";
 import type { McpHttpServerConfig } from "@anthropic-ai/claude-agent-sdk";
 import type { show } from "@ark/util";
 import { type AgentManifest, type AgentName, agentsManifest, type Payload } from "../external.ts";
-import type { PrepResult } from "../prep/index.ts";
 import { log } from "../utils/cli.ts";
 import { getGitHubInstallationToken } from "../utils/github.ts";
 
@@ -39,7 +38,6 @@ export interface AgentConfig {
   payload: Payload;
   mcpServers: Record<string, McpHttpServerConfig>;
   cliPath: string;
-  prepResults: PrepResult[];
   repo: RepoInfo;
 }