[onlydole]

Problem

When another Live Activity shares the Dynamic Island, compact trailing status text wraps inside its narrow slot. Input breaks into Inpu / t, and 3 active wraps across two lines.

Fixes #15682.

Change

Show the active count as bold black digits in a 28 pt circle using the existing phase tint. The circle separates the count from the T3 mark. Cap the visible count at 99+ while retaining the actual total and singular/plural wording in its native accessibility label. Keep action and outcome labels such as Input, Approval, Done, and Failed on one line, with scaling when needed.

Apple's Dynamic Island design session recommends essential compact information, rounded inset shapes with even margins, and an uncontained app mark. The count badge applies that guidance to the compact slot.

Scope and approval

This addresses the compact-slot rendering defect established in the issue's maintainer triage, which also identifies shorter compact copy as an option. The one-file change is local to iOS compactTrailing and uses provider-independent activity props.

Verification

A full iOS prebuild, pod install, Xcode build, and simulator install passed. Final layout changes kept the native fingerprint unchanged, and mobile-native-client ensure accepted the installed binary. Fresh ActivityKit activities verified the final native extension's pixels and accessibility labels.

The native check used an iPhone 18 Pro simulator running iOS 27.0, with Xcode 27.1 and an actual second Live Activity from a disposable companion app. That activity is labeled Test with a timer glyph. The rebuilt app paired to an isolated backend. Controlled activity props test rendering rather than network delivery.

Counts 1, 3, 12, 99, 123, and 1000 rendered in the final design. Both 123 and 1000 display 99+; native accessibility retains their full totals. Count 1 uses 1 active agent. Input, Approval, Done, and Failed stayed on one line.

node_modules/.bin/vp run check:changed passed formatting, lint, knip, and mobile/scripts typechecks on the final one-file diff. This visual fix uses native captures as regression proof, as the repository requests for visual bugs. Temporary fixtures are absent from the diff.

Physical iOS 27.0.1, single-activity visual behavior, landscape, reduced-luminance/tinted presentations, VoiceOver speech, and relay/APNs delivery remain unverified. The immediately stale fixture did not remain visible, so Out of date was not visually checked.

All images and the recording are status-bar crops reviewed for personal information. They exclude personal paths, device/session IDs, connection details, credentials, full-screen captures, and original phone attachments.

State	Before	After
Input
Three active agents

The final capped count for 123 active agents displays 99+. Its native accessibility label remains 123 active agents.

This six-second continuous native recording shows the final circle with the second activity present. It has a constant 30 fps and contains no cuts or app switching. All 180 frames have the same circle bounds.

t3-15682-final-steady.mp4

Final native accessibility results

Each case has two native Live Activity roots. Matching text nodes and bounds are retained; runtime identifiers are omitted.

[
  {
    "case": "count-1",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "1 active agent",
        "rect": {
          "height": 42,
          "x": 183,
          "width": 35,
          "y": 0
        }
      }
    ],
    "displayedCount": "1"
  },
  {
    "case": "count-3",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "3 active agents",
        "rect": {
          "width": 35,
          "height": 42,
          "y": 0,
          "x": 183
        }
      }
    ],
    "displayedCount": "3"
  },
  {
    "case": "count-12",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "12 active agents",
        "rect": {
          "x": 183,
          "y": 0,
          "height": 42,
          "width": 35
        }
      }
    ],
    "displayedCount": "12"
  },
  {
    "case": "count-99",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "99 active agents",
        "rect": {
          "x": 183,
          "y": 0,
          "height": 42,
          "width": 35
        }
      }
    ],
    "displayedCount": "99"
  },
  {
    "case": "count-123",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "123 active agents",
        "rect": {
          "y": 0,
          "x": 183,
          "width": 35,
          "height": 42
        }
      }
    ],
    "displayedCount": "99+"
  },
  {
    "case": "count-1000",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "1000 active agents",
        "rect": {
          "x": 183,
          "y": 0,
          "height": 42,
          "width": 35
        }
      }
    ],
    "displayedCount": "99+"
  },
  {
    "case": "input",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "Input",
        "rect": {
          "width": 35,
          "y": 0,
          "height": 42,
          "x": 183
        }
      }
    ]
  },
  {
    "case": "approval",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "Approval",
        "rect": {
          "x": 183,
          "width": 35,
          "y": 0,
          "height": 42
        }
      }
    ]
  },
  {
    "case": "done",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "Done",
        "rect": {
          "y": 0,
          "height": 42,
          "x": 183,
          "width": 35
        }
      }
    ]
  },
  {
    "case": "failed",
    "liveActivityCount": 2,
    "nativeText": [
      {
        "type": "Other",
        "label": "Failed",
        "rect": {
          "x": 183,
          "y": 0,
          "height": 42,
          "width": 35
        }
      }
    ]
  }
]

Reproduce the native check

1. Open an iOS simulator in T3's Device panel and use the returned AgentDevice launcher and flags throughout.
2. Run node scripts/mobile-native-client.ts ensure ios <simulator-id>, start Metro, and pair to an isolated worktree backend.
3. Temporarily copy the fixture below into apps/mobile/src/compactStatusFixture.ts and import it from the mobile entry point. Run the companion build script, install the resulting app, and start its second activity.
4. Open t3code-dev://compact-status-fixture?phase=running&count=3, then return to SpringBoard. Repeat for 1, 12, 99, 123, and 1000. Use phase=input, approval, done, or failed for the labels. The disposable fixture URL can show Route not found in the app; its native activity is still created.
5. Confirm two Live Activity roots and the expected full label in a fresh native accessibility snapshot. Capture the system Island. Device-panel and simctl screenshots omitted its pixels here, so the evidence uses cropped Xcode Device Hub window captures.
6. End with phase=clear, end and uninstall the companion, remove the temporary source/import and simulator connection, and stop only your test processes.

Disposable reproduction fixtures

These files stay outside the code diff. Use them only in a disposable simulator checkout, then remove them as described above.

compactStatusFixture.ts

import { Linking } from "react-native";
import AgentActivity, { type AgentActivityPhase, type AgentActivityProps } from "./widgets/AgentActivity";

async function fixture(url: string) {
  if (!url.includes("compact-status-fixture")) return;
  const params = new URL(url).searchParams;
  const value = params.get("phase") ?? "input";
  await Promise.all(AgentActivity.getInstances().map((activity) => activity.end("immediate")));
  if (value === "clear") return;
  const phase: AgentActivityPhase = value === "input" ? "waiting_for_input" : value === "approval" ? "waiting_for_approval" : value === "done" ? "completed" : value === "failed" ? "failed" : "running";
  const count = value === "done" || value === "failed" ? 0 : value === "running" ? Number(params.get("count") ?? 3) : 1;
  const props: AgentActivityProps = {
    title: "T3 Code",
    subtitle: "Disposable #15682 native fixture",
    activeCount: count,
    updatedAt: new Date().toISOString(),
    activities: [{ environmentId: "fixture", threadId: "fixture", projectTitle: "Disposable #15682 fixture", threadTitle: "Compact status native verification", modelTitle: "Fixture", phase, status: value === "input" ? "Input" : value === "approval" ? "Approval" : value === "done" ? "Done" : value === "failed" ? "Failed" : "Working", updatedAt: new Date().toISOString(), deepLink: "/" }],
  };
  const instance = AgentActivity.start(props, undefined, value === "stale" ? new Date(Date.now() - 1000) : undefined);
  console.log("#15682 fixture", value, instance.getId());
}
Linking.addEventListener("url", ({url}) => void fixture(url));
void Linking.getInitialURL().then((url) => { if (url) void fixture(url); });

Shared.swift

import ActivityKit
struct FixtureAttributes: ActivityAttributes {
  struct ContentState: Codable, Hashable { var title: String }
  var name: String
}

App.swift

import SwiftUI
import ActivityKit
@main struct IslandFixtureApp: App {
  var body: some Scene {
    WindowGroup {
      VStack(spacing: 20) {
        Text("Disposable #15682 companion").font(.title2)
        Text("A real second Live Activity for compact layout testing.")
        Button("Start second activity") { start() }
        Button("End second activity") { end() }
      }.padding().onOpenURL { url in
        if url.host == "clear" { end() } else { start() }
      }
    }
  }
  func start() {
    guard Activity<FixtureAttributes>.activities.isEmpty else { return }
    do { _ = try Activity.request(attributes: FixtureAttributes(name: "Disposable companion"), content: .init(state: .init(title: "Fixture"), staleDate: nil), pushType: nil) } catch { print(error) }
  }
  func end() { for activity in Activity<FixtureAttributes>.activities { Task { await activity.end(nil, dismissalPolicy: .immediate) } } }
}

Widget.swift

import SwiftUI
import WidgetKit
import ActivityKit
@main struct FixtureBundle: WidgetBundle { var body: some Widget { FixtureWidget() } }
struct FixtureWidget: Widget {
  var body: some WidgetConfiguration {
    ActivityConfiguration(for: FixtureAttributes.self) { context in
      Text("Disposable #15682 companion Live Activity").padding()
    } dynamicIsland: { context in
      DynamicIsland {
        DynamicIslandExpandedRegion(.center) { Text("Disposable #15682 companion") }
      } compactLeading: { Image(systemName: "timer") } compactTrailing: { Text("Test") } minimal: { Image(systemName: "timer") }
      .keylineTint(.orange)
    }
  }
}

App-Info.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>en</string>
	<key>CFBundleDisplayName</key>
	<string>Island Fixture</string>
	<key>CFBundleExecutable</key>
	<string>IslandFixture</string>
	<key>CFBundleIdentifier</key>
	<string>dev.t3code.compactstatusfixture</string>
	<key>CFBundleName</key>
	<string>IslandFixture</string>
	<key>CFBundlePackageType</key>
	<string>APPL</string>
	<key>CFBundleShortVersionString</key>
	<string>1.0</string>
	<key>CFBundleSupportedPlatforms</key>
	<array>
		<string>iPhoneSimulator</string>
	</array>
	<key>CFBundleURLTypes</key>
	<array>
		<dict>
			<key>CFBundleURLSchemes</key>
			<array>
				<string>island-fixture</string>
			</array>
		</dict>
	</array>
	<key>CFBundleVersion</key>
	<string>1</string>
	<key>LSRequiresIPhoneOS</key>
	<true/>
	<key>MinimumOSVersion</key>
	<string>18.0</string>
	<key>NSSupportsLiveActivities</key>
	<true/>
	<key>UIDeviceFamily</key>
	<array>
		<integer>1</integer>
	</array>
	<key>UILaunchScreen</key>
	<dict/>
</dict>
</plist>

Widget-Info.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>en</string>
	<key>CFBundleDisplayName</key>
	<string>Island fixture</string>
	<key>CFBundleExecutable</key>
	<string>IslandFixtureWidget</string>
	<key>CFBundleIdentifier</key>
	<string>dev.t3code.compactstatusfixture.widget</string>
	<key>CFBundleName</key>
	<string>IslandFixtureWidget</string>
	<key>CFBundlePackageType</key>
	<string>XPC!</string>
	<key>CFBundleShortVersionString</key>
	<string>1.0</string>
	<key>CFBundleSupportedPlatforms</key>
	<array>
		<string>iPhoneSimulator</string>
	</array>
	<key>CFBundleVersion</key>
	<string>1</string>
	<key>MinimumOSVersion</key>
	<string>18.0</string>
	<key>NSExtension</key>
	<dict>
		<key>NSExtensionPointIdentifier</key>
		<string>com.apple.widgetkit-extension</string>
	</dict>
	<key>NSSupportsLiveActivities</key>
	<true/>
	<key>UIDeviceFamily</key>
	<array>
		<integer>1</integer>
	</array>
</dict>
</plist>

build-companion.sh

#!/usr/bin/env bash
set -euo pipefail
fixture_dir="$(cd "$(dirname "$0")" && pwd)"
build_dir="$fixture_dir/.build"
app="$build_dir/IslandFixture.app"
ext="$app/PlugIns/IslandFixtureWidget.appex"
mkdir -p "$ext"
cp "$fixture_dir/App-Info.plist" "$app/Info.plist"
cp "$fixture_dir/Widget-Info.plist" "$ext/Info.plist"
xcrun --sdk iphonesimulator swiftc -target arm64-apple-ios18.0-simulator -parse-as-library "$fixture_dir/Shared.swift" "$fixture_dir/App.swift" -o "$app/IslandFixture"
xcrun --sdk iphonesimulator swiftc -target arm64-apple-ios18.0-simulator -parse-as-library -application-extension -Xlinker -e -Xlinker _NSExtensionMain "$fixture_dir/Shared.swift" "$fixture_dir/Widget.swift" -o "$ext/IslandFixtureWidget"
codesign --force --sign - "$ext"
codesign --force --sign - "$app"
printf '%s\n' "$app"

Final focused check output

$ node scripts/check-changed.ts ⊘ cache disabled
check:changed: 1 files since b5a226e49c52

> vp format
Checking formatting...

All matched files use the correct format.
Finished in 99ms on 1 files using 12 threads.

> vp lint

> vp knip
$ knip --include files,dependencies --no-config-hints ⊘ cache disabled

$ knip --workspace apps/server --workspace apps/desktop --workspace apps/web --workspace packages/client-runtime --workspace packages/contracts --workspace packages/effect-acp --workspace packages/effect-codex-app-server --workspace packages/shared --workspace packages/ssh --workspace packages/tailscale --workspace packages/provider-core --workspace packages/provider-acp --workspace packages/provider-acp-registry --workspace packages/provider-testing --workspace packages/provider-pi --workspace packages/provider-muse --workspace packages/provider-opencode --workspace packages/provider-cursor --workspace packages/provider-grok --workspace packages/source-control-core --workspace packages/source-control-azure-devops --workspace packages/source-control-bitbucket --workspace packages/source-control-forgejo --workspace packages/source-control-gitcafe --workspace packages/source-control-github --workspace packages/source-control-gitlab --workspace packages/source-control-testing --exports --preprocessor ./scripts/knip-schemas.ts --no-config-hints ⊘ cache disabled

---
vp run: 2/2 successful. (Run `vp run --last-details` for full details)

> vp typecheck (2 packages)
~/scripts$ tsc-rs --noEmit ○ cache miss: 'scripts/mobile-native-static-check.ts' modified, executing
~/apps/mobile$ tsc-rs --noEmit ○ cache miss: 'apps/mobile/src/lib/markdownMedia.test.ts' modified, executing


---
vp run: 0/2 cache hit (0%), 2/2 successful. @t3tools/scripts#typecheck not cached because it modified its inputs. (Run `vp run --last-details` for full details)

check:changed summary
  pass  format  0.4s
  pass  lint  0.6s
  pass  knip  35.9s
  pass  typecheck (2 packages)  1.9s
  CI also runs: full test suites

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Approvability

Verdict: Approved at c1be92d

Macroscope's review found this PR approvable — This is a focused mobile Live Activity presentation change that improves compact active-agent readability and accessibility without changing data contracts, workflows, or configuration. Existing attention, completed, failed, and stale states retain their prior labels.

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• apps/mobile/src/widgets/AgentActivity.tsx

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📝 Walkthrough

The compact Live Activity status now shows a capped active count when work is current and no attention row is present. Other states retain their existing status labels, with a minimum scale factor added to the text fallback.

Changes: Compact status display

Layer / File(s)	Summary
Select and render compact status apps/mobile/src/widgets/AgentActivity.tsx	When no attention row exists, work is active, and the activity is not stale, the trailing status shows the count up to 99+. The count uses an accessible tinted circular badge. Other states retain their text labels, which now use a 0.5 minimum scale factor.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix · Severity of issue fixed: Low

Suggested reviewers: fixfon

Merge Risk: ⚪ Minimal · up to 6a902

The compact status change is ready to merge after normal checks; no specific remaining user-facing failure has been established.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title clearly and concisely identifies the main change: improving readability of compact Dynamic Island status content on mobile.
Linked Issues check		Issue #15682 requires compact trailing status content to stay on one line when another Live Activity shares the Dynamic Island. apps/mobile/src/widgets/AgentActivity.tsx adds lineLimit(1) and `min…
Out of Scope Changes check		The whole-PR diff changes only apps/mobile/src/widgets/AgentActivity.tsx. The count badge, visual cap, accessibility label, and single-line modifiers directly implement issue #15682. No unrelated pr…
Description check		The pull request description includes all required sections: Problem, Change, Scope and approval, and Verification. It explains the defect, implementation, linked issue and maintainer triage, focused …

Full details: Linked Issues check

Explanation

Issue #15682 requires compact trailing status content to stay on one line when another Live Activity shares the Dynamic Island. apps/mobile/src/widgets/AgentActivity.tsx adds lineLimit(1) and minimumScaleFactor to the text states. Running states use a 28 pt tinted count circle with a visual 99+ cap. The circle exposes agentsLabel, which preserves the actual count and singular/plural wording for accessibility. Input, Approval, Done, Failed, and Out of date use the single-line text path. The reported native checks cover the required count and status cases.

Full details: Out of Scope Changes check

Explanation

The whole-PR diff changes only apps/mobile/src/widgets/AgentActivity.tsx. The count badge, visual cap, accessibility label, and single-line modifiers directly implement issue #15682. No unrelated product area or Live Activity presentation changed.

Full details: Description check

Explanation

The pull request description includes all required sections: Problem, Change, Scope and approval, and Verification. It explains the defect, implementation, linked issue and maintainer triage, focused test results, visual evidence, limitations, and agent details.

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[t3dotgg]

Note

🤖 Claude Opus 5.5 responding on behalf of Theo

Merged as part of #23327, with your commit rebased onto current main. The squash commit keeps you as co-author. Closing this one since it is now redundant. Thanks for the fix and the careful native captures.