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Hook API: replace send() with sendMessage(), add appendEntry() and registerCommand()

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Breaking changes to Hook API:
- pi.send(text, attachments?) replaced with pi.sendMessage(message, triggerTurn?)
  - Creates CustomMessageEntry instead of user messages
  - Properly handles queuing during streaming via agent loop
  - Supports optional turn triggering when idle
- New pi.appendEntry(customType, data?) for hook state persistence
- New pi.registerCommand(name, options) for custom slash commands
- Handler types renamed: SendHandler -> SendMessageHandler, new AppendEntryHandler

Implementation:
- AgentSession.sendHookMessage() handles all three cases:
  - Streaming: queues message with _hookData marker, agent loop processes it
  - Not streaming + triggerTurn: appends to state/session, calls agent.continue()
  - Not streaming + no trigger: appends to state/session only
- message_end handler routes based on _hookData presence to correct persistence
- HookRunner gains getRegisteredCommands() and getCommand() methods

New types: HookMessage<T>, RegisteredCommand, CommandContext
This commit is contained in:
Mario Zechner 2025-12-27 00:52:10 +01:00
parent d43a5e47a1
commit ba185b0571
13 changed files with 412 additions and 77 deletions
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18
packages/coding-agent/src/modes/rpc/rpc-mode.ts
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@ -131,16 +131,14 @@ export async function runRpcMode(session: AgentSession): Promise<never> {
hookRunner.onError((err) => {
output({ type: "hook_error", hookPath: err.hookPath, event: err.event, error: err.error });
});
// Set up send handler for pi.send()
hookRunner.setSendHandler((text, attachments) => {
// In RPC mode, just queue or prompt based on streaming state
if (session.isStreaming) {
session.queueMessage(text);
} else {
session.prompt(text, { attachments }).catch((e) => {
output(error(undefined, "hook_send", e.message));
});
}
// Set up handlers for pi.sendMessage() and pi.appendEntry()
hookRunner.setSendMessageHandler((message, triggerTurn) => {
session.sendHookMessage(message, triggerTurn).catch((e) => {
output(error(undefined, "hook_send", e.message));
});
});
hookRunner.setAppendEntryHandler((customType, data) => {
session.sessionManager.appendCustomEntry(customType, data);
});
// Emit session event
await hookRunner.emit({