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fix(backend): bridge maps real Pi message_update->text_delta for FE streaming

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Live end-to-end against real pi --mode rpc revealed Pi streams assistant text as
top-level message_update events whose nested assistantMessageEvent carries the
incremental delta — not the top-level text_delta the fake-pi-rpc emits. The bridge
now maps message_update(assistantMessageEvent.text_delta).delta -> FE text_delta,
so the chat shows the model's output during a real session.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
marcopan
2026-06-28 15:03:13 +02:00
co-authored by Claude Opus 4.8
parent 1ee692cdb1
commit 091a055bf0
2 changed files with 18 additions and 0 deletions
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backend/test/session-bridge.test.ts
+13
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@@ -15,6 +15,19 @@ function fakeRpc() {
};
}
test("real Pi message_update (assistantMessageEvent text_delta) becomes a text_delta to the FE", () => {
const { rpc, fire } = fakeRpc();
const b = new SessionBridge(rpc);
const seen: any[] = [];
b.onClientEvent((e) => seen.push(e));
// Shape emitted by real `pi --mode rpc`: text streams inside message_update.assistantMessageEvent.delta
fire({ type: "message_update", assistantMessageEvent: { type: "text_delta", contentIndex: 0, delta: "Avvio" } });
expect(seen[0]).toEqual({ type: "text_delta", text: "Avvio" });
// Non-text message_update events (e.g. text_start) are ignored.
fire({ type: "message_update", assistantMessageEvent: { type: "text_start", contentIndex: 0 } });
expect(seen).toHaveLength(1);
});
test("extension_ui_request nativo (method:input, title=json) diventa ui_request ed è il pendente", () => {
const { rpc, fire } = fakeRpc();
const b = new SessionBridge(rpc);