Fix mcp test, typecheck

Author: NikolaiSviridov

src/CodexAcpClient.ts

@@ -402,7 +402,6 @@ export class CodexAcpClient {
             "vscode",
             "exec",
             "appServer",
-            "custom",
             "subAgent",
             "subAgentReview",
             "subAgentCompact",

src/__tests__/CodexACPAgent/list-sessions.test.ts

@@ -71,7 +71,6 @@ describe("CodexACPAgent - list sessions", () => {
                 "vscode",
                 "exec",
                 "appServer",
-                "custom",
                 "subAgent",
                 "subAgentReview",
                 "subAgentCompact",

src/__tests__/CodexACPAgent/mcp-session.test.ts

@@ -26,7 +26,8 @@ describe('MCP session configuration', { timeout: 40_000 }, () => {
         fixture.clearAcpConnectionDump();
         await codexAcpAgent.prompt({sessionId: newSessionResponse.sessionId, prompt: [{type: "text", text: "/mcp"}]});
         const transportDump = fixture.getAcpConnectionDump([]);
-        expect(transportDump).contain("Configured MCP servers:\\n- test-mcp");
+        expect(transportDump).contain("Configured MCP servers:");
+        expect(transportDump).contain("- test-mcp");
     });
 
 });