feat(coding-agent): export RPC extension UI types

closes #5455

packages/coding-agent/CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - Added project trust gating for project-local settings, resources, instructions, and packages ([#5332](https://github.com/earendil-works/pi/pull/5332)).
 - Added the latest prompt cache hit rate to the interactive footer.
+- Exported RPC extension UI request and response types from the public API ([#5455](https://github.com/earendil-works/pi/issues/5455)).
 
 ### Fixed
 

packages/coding-agent/src/index.ts

@@ -295,6 +295,8 @@ export {
 	type RpcClientOptions,
 	type RpcCommand,
 	type RpcEventListener,
+	type RpcExtensionUIRequest,
+	type RpcExtensionUIResponse,
 	type RpcResponse,
 	type RpcSessionState,
 	runPrintMode,

packages/coding-agent/src/modes/index.ts

@@ -6,4 +6,10 @@ export { InteractiveMode, type InteractiveModeOptions } from "./interactive/inte
 export { type PrintModeOptions, runPrintMode } from "./print-mode.ts";
 export { type ModelInfo, RpcClient, type RpcClientOptions, type RpcEventListener } from "./rpc/rpc-client.ts";
 export { runRpcMode } from "./rpc/rpc-mode.ts";
-export type { RpcCommand, RpcResponse, RpcSessionState } from "./rpc/rpc-types.ts";
+export type {
+	RpcCommand,
+	RpcExtensionUIRequest,
+	RpcExtensionUIResponse,
+	RpcResponse,
+	RpcSessionState,
+} from "./rpc/rpc-types.ts";