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ApprovabilityVerdict: Not approved Macroscope's review found this PR not approvable — The aggregate change is broader than the titled device bug fix: it introduces and rewires a side-panel registry and host architecture across ChatView, launchers, preview, diff, and terminal production paths. That cross-cutting refactor changes existing runtime lifecycle and loading behavior, so human review is warranted despite the focused device tests. You can add or adjust custom eligibility rules. Learn more. |
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📝 WalkthroughWalkthroughPreview, Diff, and Terminal now use a registered side-panel system with shared host context and metadata-driven launchers. DevicePanel also guards asynchronous operations against environment or thread changes. ChangesRegistered side panels
Device operation scope guards
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant ChatView
participant RegisteredSidePanel
participant PanelHostContext
participant PreviewSidePanel
ChatView->>RegisteredSidePanel: Select panel and pass its props
RegisteredSidePanel->>PanelHostContext: Render selected panel under host context
PanelHostContext->>PreviewSidePanel: Provide thread, visibility, and annotation sender
Suggested reviewers: Merge Risk: 🔵 Low · up to If you start a device or power one off and then switch threads before it finishes, the result is silently dropped. Returning to the original thread shows no new device tab and no closed surface, so you have to repeat the action. The rest of the side-panel changes show no blocking issues. Consider applying the result to the original thread before merging. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The inspected changes preserve existing panel capabilities and strengthen separation of device results between threads. No introduced security issue was established, but the assessment does not fully cover downstream authorization and deployment behavior. Retained concerns Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @apps/web/src/components/device/DevicePanel.tsx:
- Line 102: In the pick and power-off success handlers in DevicePanel, avoid
returning early on a stale selection before processing the result. Keep
failure/error and local pending updates guarded by stillCurrent(), but always
apply successful results through openDevice or closeSurface using the captured
props.threadRef; update late-success tests to expect actions for picking.
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📒 Files selected for processing (25)
apps/web/src/components/ChatView.tsxapps/web/src/components/RightPanelTabs.browserProfile.test.tsxapps/web/src/components/RightPanelTabs.terminal.test.tsxapps/web/src/components/RightPanelTabs.test.tsxapps/web/src/components/RightPanelTabs.tsxapps/web/src/components/device/DevicePanel.test.tsxapps/web/src/components/device/DevicePanel.tsxapps/web/src/components/diffs/DiffFileLoadingBoundary.tsxapps/web/src/components/diffs/DiffLoadingState.tsxapps/web/src/components/preview/PreviewPanel.tsxapps/web/src/components/pullRequest/PullRequestCodeTab.tsxapps/web/src/components/pullRequest/PullRequestDetailPanel.tsxapps/web/src/panels/bundledPanels.test.tsxapps/web/src/panels/bundledPanels.tsxapps/web/src/panels/diff/DiffSidePanel.tsxapps/web/src/panels/panelHost.tsapps/web/src/panels/panelRegistry.test.tsxapps/web/src/panels/panelRegistry.tsapps/web/src/panels/preview/PreviewSidePanel.test.tsxapps/web/src/panels/preview/PreviewSidePanel.tsxapps/web/src/panels/terminal/PersistentThreadTerminalDrawer.tsxapps/web/src/panels/terminal/TerminalSidePanel.attach.test.tsxapps/web/src/panels/terminal/TerminalSidePanel.test.tsxapps/web/src/panels/terminal/TerminalSidePanel.tsxapps/web/src/routes/_chat.pull-requests.tsx
💤 Files with no reviewable changes (1)
- apps/web/src/components/preview/PreviewPanel.tsx
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Preview becomes the second panel on the side-panel registry that Diff started. Each definition now also carries the panel's title, icon, launcher letter, client support and unavailable copy, so the tabs, the empty launcher and the add menu read one ordered list instead of three hand-kept ones. Labels, letters, order and copy are unchanged. Panel props are inferred from each lazily loaded body, and the caller is a closed union, so another panel's props, unknown ids and widened ids do not compile. ChatView lends the rendered panel a small host (thread, right panel visibility, composer draft target, workspace mutation id and the annotation send) instead of drilling the same props into each body; the annotation send keeps the per-render closure it had before, and PreviewView still drops a pick that settles after a thread switch. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
ChatView built a new PanelHost on every render, so every usePanelHost consumer re-rendered even when no host field changed. Memoize it on its fields and send annotations through onSendRef so the sender stays stable. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Plain server threads reuse one ChatView, so the memoized panel host's sender could resolve to the next thread's composer when a pick settled after a switch. The latest sender now carries its thread key, and each host forwards only to a sender for its own thread. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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ChatView replaced the panel host's annotation sender while rendering. If React threw that render away, an in-flight preview pick could still call its onSend, for example one that edits a queued message instead of sending a turn. Update the sender in a layout effect so only committed renders lend it. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
PersistentThreadTerminalPanel, PersistentThreadTerminalDrawer, their two reconciliation helpers and the terminal launch-context types now live in apps/web/src/panels/terminal. The moved code is unchanged apart from the added export keywords; ChatView imports them and its call sites, props, memo boundaries and callbacks are untouched. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The right-panel terminal is now a registered side panel. Its body reads the thread and visibility from the panel host and keybindings from the server keybindings atom, then hands them to the unchanged memoized terminal, so ChatView renders that leave its inputs alone still skip it. ChatView passes only the terminal surface, launch context, focus request, callbacks and shortcut labels. Launcher copy, letter, order and availability are unchanged; the bottom drawer stays mounted by ChatView. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…tree A terminal launch context with a null worktree path means the terminal was launched on the local checkout. The right-panel terminal treated that null as missing and fell back to the thread's worktree, so a thread that gained a worktree after the launch gave the drawer a worktree path and runtime env that did not match its cwd. Use the launch context whenever one exists, as the persistent drawer already does. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…hread's worktree A terminal summary's null worktree path means the server opened the terminal on the project checkout. Without a launch context the right-panel terminal treated that null as missing and fell back to the thread's worktree, so a thread that gained a worktree later gave the drawer a checkout cwd with a worktree path and runtime env. Fall back to the thread's worktree only when there is neither a launch context nor a summary. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
One Device panel instance stays mounted across a thread switch, so a device start or power-off that settled after the switch left its "Starting device…" spinner or its error in the next thread. The panel now resets its operation state when its thread changes, and a pick or power-off that settles after it moved to another thread (even back again) or unmounted no longer touches the panel's spinner or error. The tab it opens or closes still lands in the thread it started from, which is where the server opened or shut down the device. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Stacked on #16039 (and #15010). Review only the top commit: 640977a.
Problem
The Device panel (live iOS Simulator / Android Emulator) stays mounted when you switch threads. If you start a device or power one off and switch threads before it finishes, the next thread shows the previous thread's "Starting device…" spinner (with its device list unusable) or its error. The spinner and error belong to the thread that started the operation, not the one you are looking at now.
Why this qualifies
A small, self-contained bug fix in one web component. It does not depend on the panel host proposed in Ideas discussion #14938 or on any other stacked PR: it applies cleanly to
mainon its own, and the Device panel and everything its tests use are identical there. It is placed below the Device panel registration PR in the stack so that PR stays a mechanical move. No maintainer has agreed to it yet. Previous PR in this stack: refactor(web): open the right-panel terminal through the panel host (#16039).Fix
One commit, 2 files (+273/−6),
apps/web/src/components/device/DevicePanel.tsxand a new test.Evidence
Captured on macOS 26.5.2 against isolated state: one project, Thread A and Thread B, each with the Device picker tab open. The device is a dedicated Android emulator (API 36) set to cold-boot every time, so starting it takes tens of seconds and leaves time to switch threads. Before = this PR's parent
a24bc61e6c, captured on web (Playwright Chromium) and in the built Electron app, light and dark. After = this head56ab9a8347for the start and power-off flows, web only, dark only (Playwright Chromium, 1440×1000). The failed-start and same-thread after captures are from the earlier revision7a5afb4555(web and Electron); this head does not change how those flows behave. Recordings are real time.Start a device in A, switch to B before it boots, return to A
Before (base): B shows A's "Starting device…" and B's device list is unusable. When the boot finishes, A has its device tab.
After (
56ab9a8347): B keeps its own usable device list, with no spinner, error or device tab from A. When the boot finishes, A has its device tab, as on the base. On return, A shows the named device tab streaming the emulator. The switch to B came 776 ms after Start; the recording has no internal cuts.Start fails after switching away (the emulator is killed while it boots)
Before (base): B shows A's "failed to boot" error, and A still shows it on return.
After (captured at
7a5afb4555, same behaviour at this head): the late error is dropped. B shows no error, and neither does A on return.Power off, then switch away before it settles. Before and after (
56ab9a8347): A's device tab closes in A while you are away, and B keeps its own picker with the device shown as stopped. B shows no spinner or error from A after the fix. The switch came 252 ms after Power off. Staying in one thread behaves the same on both revisions: the device tab opens and streams (after captured at7a5afb4555).Stills
After stills for start and power-off are web dark at
56ab9a8347. The other after stills are from7a5afb4555. The isolated fixture also lists an unrelated "New thread, server" row in the sidebar.MP4s: before S · after S · before F · after F · before S Electron · after F Electron
Electron captures use the app built from each revision with an isolated profile (a throwaway HOME, Chromium
--use-mock-keychain). On those revisions the failed-start, power-off and same-thread flows matched the web results.Checks at this head (
56ab9a8347), run with the bot-review fix (CI=true, all exit 0):vp test run src/components/device/DevicePanel.test.tsx(apps/web): 1 file, 7 tests pass. The tests drive the real panel buttons with deferred device results and the same thread id in two environments.vp run --filter @t3tools/web typecheck,vp lint --report-unused-disable-directivesandvp fmt --checkon the touched files: pass.vp run knip:checkand the cherry-pick ontomainpassed at7a5afb4555.Surfaces
Not verified
Claude Opus 5.5 (build), GPT-6.1 Sol (review) and GPT-6 Astra (captures) via T3 Code
🤖 Generated with Claude Code