fix(coding-agent): decouple codex session cleanup

packages/ai/src/index.ts

@@ -16,14 +16,10 @@ export type {
 	OpenAICodexResponsesOptions,
 	OpenAICodexWebSocketDebugStats,
 } from "./providers/openai-codex-responses.js";
-export {
-	closeOpenAICodexWebSocketSessions,
-	getOpenAICodexWebSocketDebugStats,
-	resetOpenAICodexWebSocketDebugStats,
-} from "./providers/openai-codex-responses.js";
 export type { OpenAICompletionsOptions } from "./providers/openai-completions.js";
 export type { OpenAIResponsesOptions } from "./providers/openai-responses.js";
 export * from "./providers/register-builtins.js";
+export * from "./session-resources.js";
 export * from "./stream.js";
 export * from "./types.js";
 export * from "./utils/diagnostics.js";

packages/ai/src/providers/openai-codex-responses.ts

@@ -22,6 +22,7 @@ if (typeof process !== "undefined" && (process.versions?.node || process.version
 
 import { getEnvApiKey } from "../env-api-keys.js";
 import { clampThinkingLevel } from "../models.js";
+import { registerSessionResourceCleanup } from "../session-resources.js";
 import type {
 	Api,
 	AssistantMessage,
@@ -682,6 +683,8 @@ export function closeOpenAICodexWebSocketSessions(sessionId?: string): void {
 	websocketSessionCache.clear();
 }
 
+registerSessionResourceCleanup(closeOpenAICodexWebSocketSessions);
+
 function isWebSocketSseFallbackActive(sessionId: string | undefined): boolean {
 	return sessionId ? websocketSseFallbackSessions.has(sessionId) : false;
 }

packages/ai/src/session-resources.ts

@@ -0,0 +1,24 @@
+export type SessionResourceCleanup = (sessionId?: string) => void;
+
+const sessionResourceCleanups = new Set<SessionResourceCleanup>();
+
+export function registerSessionResourceCleanup(cleanup: SessionResourceCleanup): () => void {
+	sessionResourceCleanups.add(cleanup);
+	return () => {
+		sessionResourceCleanups.delete(cleanup);
+	};
+}
+
+export function cleanupSessionResources(sessionId?: string): void {
+	const errors: unknown[] = [];
+	for (const cleanup of sessionResourceCleanups) {
+		try {
+			cleanup(sessionId);
+		} catch (error) {
+			errors.push(error);
+		}
+	}
+	if (errors.length > 0) {
+		throw new AggregateError(errors, "Failed to cleanup session resources");
+	}
+}