chore(vendor): import pi 1.3.0

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0

third_party/pi/packages/ai/src/index.ts

@@ -30,19 +30,18 @@ export type {
 	OAuthSelectOption,
 	OAuthSelectPrompt,
 } from "./compat/extension-oauth-types.ts";
-export * from "./images-models.ts";
 export * from "./models.ts";
 export * from "./models-store.ts";
 export * from "./providers/faux.ts";
 export * from "./session-resources.ts";
 export * from "./types.ts";
-export * from "./utils/assistant-message-frame.ts";
 export * from "./utils/diagnostics.ts";
 export * from "./utils/event-stream.ts";
 export * from "./utils/json-parse.ts";
 export * from "./utils/overflow.ts";
 export * from "./utils/retry.ts";
-export { contentText } from "./utils/text.ts";
+export { contentText, getSystemMessageText, renderSystemMessageUpdate } from "./utils/text.ts";
+export * from "./utils/transcript.ts";
 export * from "./utils/typebox-helpers.ts";
 export { uuidv7 } from "./utils/uuid.ts";
 export * from "./utils/validation.ts";