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refactor(web): per-block chat timeline + Layer 1 aggregator #271

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Merged
mgoldsborough merged 9 commits into from
May 23, 2026
Merged

refactor(web): per-block chat timeline + Layer 1 aggregator #271

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85114fa
fix(web): render assistant turn segments in stream order
mgoldsborough May 23, 2026
94e3f08
refactor(web): replace turn pill with per-block inline timeline
mgoldsborough May 23, 2026
ba28f07
fix(web): merge contiguous reasoning + tools into one phase chip
mgoldsborough May 23, 2026
402a0f4
refactor(web): extract aggregateGroup — Layer 1 of tool-display
mgoldsborough May 23, 2026
e82b397
fix(web): unify loading state UX across chips and live cursor
mgoldsborough May 23, 2026
3b90c67
fix(web): chip head reflects terminal outcome, not journey
mgoldsborough May 23, 2026
c45d6fc
fix(web): per-call rows always identify the tool that ran
mgoldsborough May 23, 2026
529f7f0
fix(web): count-led label when verb has no majority
mgoldsborough May 23, 2026
71727aa
refactor(web): extract formatGroupLabel — single source of truth for …
mgoldsborough May 23, 2026
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742 changes: 742 additions & 0 deletions web/src/components/BlockTimeline.tsx
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2 changes: 1 addition & 1 deletion web/src/components/MessageInput.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -234,7 +234,7 @@ export function MessageInput({
</div>
</div>

{/* Shortcut hints — status copy lives on the TurnActivityPill, not here. */}
{/* Shortcut hints — status copy lives on the BlockTimeline / LiveCursor, not here. */}
<div className="flex items-center justify-center gap-3 mt-2 text-[10px] text-muted-foreground">
{onNewConversation && (
<button
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103 changes: 14 additions & 89 deletions web/src/components/MessageList.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,8 @@ import { Streamdown } from "streamdown";
import type { ChatMessage, PreparingTool, StreamingState } from "../hooks/useChat";
import { participantColor } from "../lib/participant-colors";
import type { DisplayDetail } from "../lib/tool-display";
import { BlockTimeline } from "./BlockTimeline";
import { FileAttachment } from "./FileAttachment";
import { InlineAppView } from "./InlineAppView";
import { ResourceLinkView } from "./ResourceLinkView";
import { TurnActivityPill } from "./TurnActivityPill";

function formatTokens(count: number): string {
if (count >= 1000) return `${(count / 1000).toFixed(1)}k`;
Expand Down Expand Up @@ -333,94 +331,21 @@ export function MessageList({
</div>
) : (
<div className="w-full break-words min-w-0 overflow-hidden flex flex-col gap-3">
{/* Turn-level activity surface — anchors at the top of the
assistant message. Single source of truth for status,
tool grouping, and reasoning timeline. */}
<TurnActivityPill
blocks={msg.blocks}
streamingState={streamingState}
preparingTool={preparingTool ?? null}
isCurrentTurn={isStreaming && idx === messages.length - 1}
displayDetail={displayDetail}
/>
{/* Render content blocks in temporal order. Reasoning is
surfaced inside the pill; tool blocks emit only their
widget/resource attachments here. */}
{msg.blocks ? (
msg.blocks.map((block, blockIdx) => {
if (block.type === "reasoning") {
// Reasoning lives in the pill timeline now.
return null;
}
if (block.type === "text" && block.text) {
return (
// biome-ignore lint/suspicious/noArrayIndexKey: blocks are append-only and don't reorder
<div key={blockIdx} className="min-h-[1em]">
<Streamdown
className="streamdown-container presence-assistant-message"
isAnimating={
isStreaming &&
idx === messages.length - 1 &&
blockIdx === msg.blocks!.length - 1
}
>
{block.text}
</Streamdown>
</div>
);
}
if (block.type === "tool" && block.toolCalls.length > 0) {
const blockWidgets = block.toolCalls.filter(
(tc) => tc.resourceUri && tc.status === "done" && tc.appName,
);
const resourceLinkCalls = block.toolCalls.filter(
(tc) =>
tc.status === "done" &&
tc.appName &&
tc.resourceLinks &&
tc.resourceLinks.length > 0,
);
if (blockWidgets.length === 0 && resourceLinkCalls.length === 0) {
return null;
}
return (
// biome-ignore lint/suspicious/noArrayIndexKey: blocks are append-only and don't reorder
<div key={blockIdx} className="flex flex-col gap-3">
{blockWidgets.map((tc) => {
// Pass the full ui:// URI through — InlineAppView strips the
// scheme and forwards everything after as the resource path.
// The legacy regex `/^ui:\/\/[^/]+\/(.+)$/` dropped the first
// segment on the assumption it was a namespace prefix, which
// breaks two-segment URIs like `ui://<state>/<method>` where
// the first segment is load-bearing (Reboot's convention for
// state-scoped UI methods).
return (
<InlineAppView
key={tc.id}
appName={tc.appName!}
resourceUri={tc.resourceUri!}
toolResult={{ tool: tc.name, result: tc.result }}
/>
);
})}
{resourceLinkCalls.flatMap((tc) =>
tc.resourceLinks!.map((link) => (
<ResourceLinkView
key={`${tc.id}:${link.uri}`}
appName={tc.appName!}
uri={link.uri}
name={link.name}
mimeType={link.mimeType}
description={link.description}
/>
)),
)}
</div>
);
}
return null;
})
<BlockTimeline
blocks={msg.blocks}
isCurrentMessage={isStreaming && idx === messages.length - 1}
streamingState={streamingState}
preparingTool={preparingTool ?? null}
displayDetail={displayDetail}
/>
) : (
// Legacy / pre-block-model conversations: render the
// serialized message content as one Streamdown block.
// The block model has been the engine's emission shape
// for some time, so this branch is essentially
// history-only; kept for archived JSONLs that don't
// have `blocks` populated.
<div className="min-h-[1em]">
<Streamdown
className="streamdown-container presence-assistant-message"
Expand Down
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