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reattach round: attach-first handshake, honest Reattaching placeholder

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amosblomqvist
2026-10-02 02:23:20 +03:00
parent 0751fec9d8
commit 142f1978f2
4 changed files with 112 additions and 36 deletions
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components/chat.tsx
+20 -20
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@@ -15,6 +15,7 @@ import {
import { Message, MessageContent, MessageResponse } from "@/components/ai-elements/message";
import { Reasoning, ReasoningContent, ReasoningTrigger } from "@/components/ai-elements/reasoning";
import { Shimmer } from "@/components/ai-elements/shimmer";
import { BrailleSpinner } from "@/components/braille-spinner";
import { LiveToolCard } from "@/components/artifacts/live-tool-card";
import { Separator } from "@/components/ui/separator";
import { AnsweredCard } from "@/components/answered-card";
@@ -185,7 +186,7 @@ export function Chat({
// (core/view.ts projectView); sends are ONE explicit input event each
// ({chatId, input} — the stash indirection died with the SDK), and the
// turn stream is the VERBATIM AgentEvent passthrough the server emits.
const { messages, nativeMessages, send, submitAnswer, setMessages, adoptRecord, status, error, stop, clearError, resumeStream, setReattachSettled } =
const { messages, nativeMessages, send, submitAnswer, setMessages, adoptRecord, status, error, reattaching, stop, clearError, resumeStream, setReattachSettled } =
useChatSession({ chatId, initialMessages, initiallyInFlight });
// The reattach settled terminal → the sync-and-continue seam (below).
@@ -200,19 +201,6 @@ export function Chat({
}
}, [initialPrompt, initialMessages.length, send]);
// Reattach on mount (stream-reattach wave): a turn that outlived its
// client (navigate away mid-turn, back while in flight) is re-entered
// through the SAME rendering path as a live one — resumeStream() feeds
// the replay burst (instant catch-up) then the live deltas into the
// SDK's own chunk pipeline. Raced settle is the transport's turn-settled
// terminal: onSettled refetches the record. No once-ref guard: every
// mount resumes (the deps are stable — this fires once per mount), and
// React StrictMode's dev double-mount ABORTS the first attempt at
// dispose — the retry must be allowed to run.
useEffect(() => {
if (initiallyInFlight) void resumeStream();
}, [resumeStream, initiallyInFlight]);
// A turn running server-side, attached to no live view of ours (navigate
// away mid-turn, or a wake turn discovered mid-session): the reattach
// stream is the primary channel (resumeStream — the same rendering path
@@ -1193,12 +1181,24 @@ export function Chat({
2026-10-01): once a tool call starts writing, its LIVE card
carries the activity inline — the old bottom tool-activity
line retired rather than double-render. Same glimmer recipe
as the thinking row: duration 1. */}
{(status === "submitted" || turnInFlight) && (
<Shimmer duration={1} className="text-sm">
Thinking…
</Shimmer>
)}
as the thinking row: duration 1. The REATTACH variant
(reattach round 2026-10-02): while a fresh mount reattaches
to a server-side turn, the placeholder says what is actually
happening — Reattaching… + the working-state spinner —
instead of a bare Thinking shimmer. */}
{(status === "submitted" || turnInFlight) &&
(reattaching ? (
<span className="flex items-center gap-2">
<BrailleSpinner label="Reattaching to the running turn" />
<Shimmer duration={1} className="text-sm">
Reattaching…
</Shimmer>
</span>
) : (
<Shimmer duration={1} className="text-sm">
Thinking…
</Shimmer>
))}
{error && (
<div className="rounded-lg border border-destructive/50 bg-destructive/10 px-3 py-2 text-sm">
Something went wrong: {error.message}