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fix: show subagent current status instead of full tool-call list (#1528)

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The subagent card listed every nested tool call, ballooning the card as
the subagent ran. Show a single status line (current activity + step
count) until a richer activity UI lands.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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Johannes du Plessis 2026-06-15 10:53:28 -07:00 • committed by GitHub
parent dfa3fc13b9
commit 3deb3ef4e0
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1 changed files with 28 additions and 25 deletions
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53
ui/src/components/agents/subagents/SubagentActivity.tsx
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@ -6,12 +6,16 @@ function humanizeToolName(name: string): string {
}
/**
* Live nested activity for a single subagent, read straight from the SDK's
* scoped `tools` projection (`useToolCalls(stream, { namespace })`). The
* namespace comes from `stream.subagents` (attached to the `task` chunk by
* Live status for a single subagent, read straight from the SDK's scoped
* `tools` projection (`useToolCalls(stream, { namespace })`). The namespace
* comes from `stream.subagents` (attached to the `task` chunk by
* `streamMessagesToUi`), so this subscribes to exactly the subagent that the
* parent card represents.
*
* Hotfix: rather than listing every nested tool call (which balloons the card),
* this shows a single line with the subagent's current activity plus a running
* step count. A richer activity UI will replace this later.
*
* Mounting opens a ref-counted subscription scoped to `namespace`; unmounting
* closes it. Only mounted from {@link SubagentCard} when
* `useIsInAgentThreadStream()` is true, so the `useStreamContext` read is
@ -21,30 +25,29 @@ export function SubagentActivity({ namespace }: { namespace: Array<string> }) {
const stream = useAgentThreadStream()
const toolCalls = useToolCalls(stream, { namespace })
if (toolCalls.length === 0) return null
const current = toolCalls[toolCalls.length - 1]
if (!current) return null
const stepCount = toolCalls.length
return (
<div className="mt-1 flex flex-col gap-1 border-t border-[var(--ui-border)] pt-1.5">
{toolCalls.map((toolCall, index) => {
const id = toolCall.id || toolCall.callId || `sub-tool-${index}`
return (
<div key={id} className="flex min-w-0 items-center gap-1.5">
{toolCall.status === "finished" ? (
<Check className="h-3 w-3 shrink-0 text-[color:var(--ui-accent)]" aria-hidden />
) : toolCall.status === "error" ? (
<X className="h-3 w-3 shrink-0 text-red-400" aria-hidden />
) : (
<Loader2
className="h-3 w-3 shrink-0 animate-spin text-[color:var(--ui-text-dim)]"
aria-hidden
/>
)}
<span className="truncate text-[10px] text-[color:var(--ui-text-dim)]">
{humanizeToolName(toolCall.name)}
</span>
</div>
)
})}
<div className="mt-1 flex min-w-0 items-center gap-1.5 border-t border-[var(--ui-border)] pt-1.5">
{current.status === "finished" ? (
<Check className="h-3 w-3 shrink-0 text-[color:var(--ui-accent)]" aria-hidden />
) : current.status === "error" ? (
<X className="h-3 w-3 shrink-0 text-red-400" aria-hidden />
) : (
<Loader2
className="h-3 w-3 shrink-0 animate-spin text-[color:var(--ui-text-dim)]"
aria-hidden
/>
)}
<span className="truncate text-[10px] text-[color:var(--ui-text-dim)]">
{humanizeToolName(current.name)}
</span>
<span className="ml-auto shrink-0 text-[10px] tabular-nums text-[color:var(--ui-text-dim)]">
{stepCount} {stepCount === 1 ? "step" : "steps"}
</span>
</div>
)
}