fix(agent): mount @agentclientprotocol/sdk for pi and claude adapters (#135)

- The pi and claude ACP adapters import `@agentclientprotocol/sdk`, but it was missing from each agent descriptor's `requires`, so it was never projected into the VM at `/root/node_modules`.
- On runtimes whose module resolver does not fall back to the host tree, the adapter exits code 1 with "Cannot resolve module '@agentclientprotocol/sdk'" (reported against `@agentos-software/claude-code@0.2.0`).
- Add it to `requires` for both agents so it is mounted regardless of resolver/runtime version; both packages already declare it as a dependency.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: NathanFlurry

registry/agent/claude/src/index.ts

@@ -8,7 +8,7 @@ const claude = {
 	name: "claude",
 	type: "agent" as const,
 	packageDir,
-	requires: ["@anthropic-ai/claude-agent-sdk"],
+	requires: ["@agentclientprotocol/sdk", "@anthropic-ai/claude-agent-sdk"],
 	agent: {
 		id: "claude",
 		acpAdapter: "@agentos-software/claude-code",

registry/agent/pi/src/index.ts

@@ -8,7 +8,11 @@ const pi = {
 	name: "pi",
 	type: "agent" as const,
 	packageDir,
-	requires: ["@agentos-software/pi", "@mariozechner/pi-coding-agent"],
+	requires: [
+		"@agentclientprotocol/sdk",
+		"@agentos-software/pi",
+		"@mariozechner/pi-coding-agent",
+	],
 	agent: {
 		id: "pi",
 		acpAdapter: "@agentos-software/pi",