feat: add configurable pi statusbar extension

providers/openai-codex/constants.ts

@@ -0,0 +1,45 @@
+/**
+ * Constants for OpenAI Codex (ChatGPT OAuth) backend
+ */
+
+export const CODEX_BASE_URL = "https://chatgpt.com/backend-api";
+
+export const OPENAI_HEADERS = {
+  BETA: "OpenAI-Beta",
+  ACCOUNT_ID: "chatgpt-account-id",
+  ORIGINATOR: "originator",
+  SESSION_ID: "session_id",
+  CONVERSATION_ID: "conversation_id",
+} as const;
+
+export const OPENAI_HEADER_VALUES = {
+  BETA_RESPONSES: "responses=experimental",
+  BETA_RESPONSES_WEBSOCKETS_V2: "responses_websockets=2026-02-06",
+  ORIGINATOR_CODEX: "pi",
+} as const;
+
+export const URL_PATHS = {
+  RESPONSES: "/responses",
+  CODEX_RESPONSES: "/codex/responses",
+} as const;
+
+export const JWT_CLAIM_PATH = "https://api.openai.com/auth" as const;
+
+/**
+ * Extract account ID from a Codex JWT access token.
+ * Returns undefined if the token is not a valid Codex JWT.
+ */
+export function getCodexAccountId(accessToken: string): string | undefined {
+  try {
+    const parts = accessToken.split(".");
+    if (parts.length !== 3) return undefined;
+    const decoded = Buffer.from(parts[1] ?? "", "base64").toString("utf-8");
+    const payload = JSON.parse(decoded) as Record<string, unknown>;
+    const auth = payload[JWT_CLAIM_PATH] as
+      | { chatgpt_account_id?: string }
+      | undefined;
+    return auth?.chatgpt_account_id ?? undefined;
+  } catch {
+    return undefined;
+  }
+}