feat(ui): viewer=full document deep link opens the maximized side pane (#12812)

## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - Agents ask humans for decisions through approval cards, and a chat
gateway plugin can forward those cards to Slack with an "Open task"
button
> - The button opens the bare task page; to read the document under
approval, the reviewer must click four more times (open the side pane,
open the Artifacts tab, open the artifact, maximize the pane)
> - Approvals are the highest-frequency human touchpoint, so each
removed click matters
> - This pull request adds a `viewer=full` option to the existing
`#document-<key>` deep link; the link now opens the target document and
maximizes the side pane
> - The benefit is one-click access from an external notification to a
full-size reading surface for the document under approval

## Linked Issues or Issue Description

**What existing behavior does this improve?**

The issue page already supports `#document-<key>` deep links. They open
the document in the side pane, but at the pane's default width.

**Current behavior**

An external link cannot request the maximized (full-size) document view.
A reviewer who follows an approval notification must maximize the pane
by hand each time.

**Proposed behavior**

`#document-<key>&viewer=full` opens the document and maximizes the side
pane. Plan documents open in the Plan tab, maximized. Mobile keeps the
full-screen sheet. Unknown `viewer` values are ignored, so old links and
new links stay compatible in both directions.

**Reason and benefit**

Chat notifications about approvals can now land the reviewer directly on
a full-size view of the document they must read. This removes four
clicks from every approval review.

**Breaking changes**

None. The parameter is optional and additive. Links without it keep
today's behavior.

## What Changed

- `ui/src/lib/document-annotation-hash.ts`: parse and build an optional
`viewer=full` parameter in document hashes.
- `ui/src/lib/issue-document-deep-link.ts`: thread a `maximize` flag on
properties-pane routes; the continuation-summary route is unchanged.
- `ui/src/context/PanelContext.tsx`: add a one-shot panel maximize
request (`requestPanelMaximize` / `clearPanelMaximizeRequest`).
- `ui/src/components/PropertiesPanel.tsx`: the resizable panel host
consumes a pending request once it is visible and laid out, then clears
it.
- `ui/src/pages/IssueDetail.tsx`: request the maximize on the desktop
deep-link path only; mobile keeps the sheet.
- Tests for all of the above.

## Verification

- `cd ui && pnpm typecheck` — clean.
- `cd ui && pnpm vitest run src/lib/document-annotation-hash.test.ts
src/lib/issue-document-deep-link.test.ts
src/components/PropertiesPanel.test.tsx` — 31/31 green.
- New cases cover: `viewer` parse/build round trip, unknown values
ignored, maximize routing for document and plan tabs, a pending request
consumed on mount, and a request held while the panel is hidden.
- Manual check: open an issue with `#document-<key>&viewer=full` in the
URL; the pane opens on that document, maximized. Remove the parameter;
the pane opens at its normal width.

## Risks

- Low risk. The parameter is optional; no data, schema, or API changes.
- The maximize request lives in React context as a one-shot flag. It is
cleared on first consumption, so a stale request cannot re-maximize the
pane on later navigations.
- If a link carries `viewer=full` on a web build older than this change,
the parameter is ignored and the document still opens.

## Model Used

- Claude Fable 5 (`claude-fable-5`), Anthropic. Agentic coding session
with extended thinking and tool use (file edits, shell, test runs).

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [ ] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [ ] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Michael Nguyen 2026-09-03 20:27:25 -10:00 committed by GitHub
parent 54dd0f4868
commit 2a5aa5e213
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
9 changed files with 276 additions and 11 deletions

View File

@ -19,8 +19,10 @@ const mockPanelState = vi.hoisted(() => ({
panelContent: null as unknown,
panelContentMode: "padded" as const,
panelVisible: true,
panelMaximizeRequested: false,
}));
const mockSetPanelVisible = vi.hoisted(() => vi.fn());
const mockClearPanelMaximizeRequest = vi.hoisted(() => vi.fn());
vi.mock("../context/PanelContext", () => ({
usePanel: () => ({
@ -31,6 +33,9 @@ vi.mock("../context/PanelContext", () => ({
closePanel: vi.fn(),
setPanelVisible: mockSetPanelVisible,
togglePanelVisible: vi.fn(),
panelMaximizeRequested: mockPanelState.panelMaximizeRequested,
requestPanelMaximize: vi.fn(),
clearPanelMaximizeRequest: mockClearPanelMaximizeRequest,
}),
}));
@ -74,6 +79,8 @@ describe("PropertiesPanel", () => {
document.body.appendChild(container);
window.localStorage.clear();
mockSetPanelVisible.mockClear();
mockClearPanelMaximizeRequest.mockClear();
mockPanelState.panelMaximizeRequested = false;
});
afterEach(() => {
@ -151,6 +158,20 @@ describe("PropertiesPanel", () => {
expect(container.querySelector("section")?.getAttribute("data-maximized")).toBe("true");
});
it("consumes a pending deep-link maximize request on mount (LOOA-2181)", async () => {
mockPanelState.panelMaximizeRequested = true;
await renderPanel({ taskDetailLayout: true });
expect(mockClearPanelMaximizeRequest).toHaveBeenCalled();
expect(container.querySelector("section")?.getAttribute("data-maximized")).toBe("true");
});
it("holds a deep-link maximize request while the panel is hidden", async () => {
mockPanelState.panelMaximizeRequested = true;
await renderPanel({ panelVisible: false });
expect(mockClearPanelMaximizeRequest).not.toHaveBeenCalled();
expect(container.querySelector("section")?.getAttribute("data-maximized")).not.toBe("true");
});
it("uses an X to close the Streamlined task-detail sidebar", async () => {
await renderPanel({ taskDetailLayout: true });
const close = container.querySelector<HTMLButtonElement>('[aria-label="Close side panel"]');

View File

@ -9,7 +9,14 @@ import { ScrollArea } from "@/components/ui/scroll-area";
import { SidePanelFrame, SidePanelWindowControls } from "@/components/side-panel";
export function PropertiesPanel({ taskDetailLayout = false }: { taskDetailLayout?: boolean }) {
const { panelContent, panelContentMode, panelVisible, setPanelVisible } = usePanel();
const {
panelContent,
panelContentMode,
panelVisible,
setPanelVisible,
panelMaximizeRequested,
clearPanelMaximizeRequest,
} = usePanel();
const { enabled: classicTaskInterfaceEnabled } = useClassicTaskInterfaceEnabled();
const { enabled: streamlinedUiEnabled } = useStreamlinedUiEnabled();
const streamlinedTaskDetailLayout = streamlinedUiEnabled && taskDetailLayout;
@ -45,6 +52,8 @@ export function PropertiesPanel({ taskDetailLayout = false }: { taskDetailLayout
panelVisible={panelVisible}
setPanelVisible={setPanelVisible}
taskDetailLayout={streamlinedTaskDetailLayout}
maximizeRequested={panelMaximizeRequested}
clearMaximizeRequest={clearPanelMaximizeRequest}
/>
);
}
@ -144,6 +153,9 @@ interface ResizablePropertiesPanelProps {
panelVisible: boolean;
setPanelVisible: (visible: boolean) => void;
taskDetailLayout: boolean;
/** Pending `viewer=full` deep-link request (LOOA-2181); cleared once consumed. */
maximizeRequested: boolean;
clearMaximizeRequest: () => void;
}
function ResizablePropertiesPanel({
@ -152,6 +164,8 @@ function ResizablePropertiesPanel({
panelVisible,
setPanelVisible,
taskDetailLayout,
maximizeRequested,
clearMaximizeRequest,
}: ResizablePropertiesPanelProps) {
const defaultPaneWidth = taskDetailLayout
? TASK_DETAIL_DEFAULT_PANE_WIDTH
@ -301,6 +315,16 @@ function ResizablePropertiesPanel({
restoreTimerRef.current = window.setTimeout(finishRestore, RESTORE_FALLBACK_DELAY);
}, [clearRestoreTimer, finishRestore]);
// Deep-link maximize (LOOA-2181): the request may predate this mount (the
// hash routes before the panel content commits), so it lives in context and
// is consumed here once the panel is actually visible and laid out —
// handleMaximize measures live geometry, which needs a committed DOM.
useEffect(() => {
if (!maximizeRequested || !panelVisible) return;
clearMaximizeRequest();
if (!maximized) handleMaximize();
}, [maximizeRequested, panelVisible, maximized, handleMaximize, clearMaximizeRequest]);
const handleTransitionEnd = useCallback(
(event: React.TransitionEvent<HTMLElement>) => {
if (event.target !== asideRef.current || event.propertyName !== "left") return;

View File

@ -11,6 +11,15 @@ interface PanelContextValue {
closePanel: () => void;
setPanelVisible: (visible: boolean) => void;
togglePanelVisible: () => void;
/**
* One-shot maximize request (LOOA-2181): deep links with `viewer=full` ask
* the resizable panel host to open maximized. The request stays pending
* until the host consumes it (the panel may not be mounted yet when the
* deep link routes), so consumers must clear it after acting.
*/
panelMaximizeRequested: boolean;
requestPanelMaximize: () => void;
clearPanelMaximizeRequest: () => void;
}
const PanelContext = createContext<PanelContextValue | null>(null);
@ -36,6 +45,15 @@ export function PanelProvider({ children }: { children: ReactNode }) {
const [panelContent, setPanelContent] = useState<ReactNode | null>(null);
const [panelContentMode, setPanelContentMode] = useState<SidePanelContentMode>("padded");
const [panelVisible, setPanelVisibleState] = useState(readPreference);
const [panelMaximizeRequested, setPanelMaximizeRequested] = useState(false);
const requestPanelMaximize = useCallback(() => {
setPanelMaximizeRequested(true);
}, []);
const clearPanelMaximizeRequest = useCallback(() => {
setPanelMaximizeRequested(false);
}, []);
const openPanel = useCallback((content: ReactNode, options?: { contentMode?: SidePanelContentMode }) => {
setPanelContent(content);
@ -62,7 +80,18 @@ export function PanelProvider({ children }: { children: ReactNode }) {
return (
<PanelContext.Provider
value={{ panelContent, panelContentMode, panelVisible, openPanel, closePanel, setPanelVisible, togglePanelVisible }}
value={{
panelContent,
panelContentMode,
panelVisible,
openPanel,
closePanel,
setPanelVisible,
togglePanelVisible,
panelMaximizeRequested,
requestPanelMaximize,
clearPanelMaximizeRequest,
}}
>
{children}
</PanelContext.Provider>

View File

@ -15,6 +15,7 @@ describe("parseDocumentAnnotationHash", () => {
documentKey: "plan",
threadId: null,
commentId: null,
viewer: null,
});
});
@ -25,6 +26,25 @@ describe("parseDocumentAnnotationHash", () => {
documentKey: "plan",
threadId: "t1",
commentId: "c2",
viewer: null,
});
});
it("parses the viewer=full request", () => {
expect(parseDocumentAnnotationHash("#document-direction-package&viewer=full")).toEqual({
documentKey: "direction-package",
threadId: null,
commentId: null,
viewer: "full",
});
});
it("ignores unknown viewer values", () => {
expect(parseDocumentAnnotationHash("#document-plan&viewer=huge")).toEqual({
documentKey: "plan",
threadId: null,
commentId: null,
viewer: null,
});
});
@ -33,6 +53,7 @@ describe("parseDocumentAnnotationHash", () => {
documentKey: "my notes",
threadId: "abc",
commentId: null,
viewer: null,
});
});
@ -60,8 +81,24 @@ describe("buildDocumentAnnotationHash", () => {
).toBe("#document-plan&thread=t1&comment=c2");
});
it("includes the viewer request", () => {
expect(
buildDocumentAnnotationHash({
documentKey: "direction-package",
threadId: null,
commentId: null,
viewer: "full",
}),
).toBe("#document-direction-package&viewer=full");
});
it("survives a round trip", () => {
const target = { documentKey: "plan-2", threadId: "t-abc", commentId: "c-xyz" };
const target = {
documentKey: "plan-2",
threadId: "t-abc",
commentId: "c-xyz",
viewer: "full" as const,
};
expect(parseDocumentAnnotationHash(buildDocumentAnnotationHash(target))).toEqual(target);
});
});

View File

@ -2,6 +2,13 @@ export interface DocumentAnnotationHashTarget {
documentKey: string;
threadId: string | null;
commentId: string | null;
/**
* `viewer=full` (LOOA-2181): external deep links e.g. the Slack gateway's
* "Open task" button on an approval card request the document opened in
* the maximized (full-size) properties pane, skipping the manual
* open-pane Artifacts open maximize click chain.
*/
viewer: "full" | null;
}
const DOCUMENT_HASH_PREFIX = "#document-";
@ -25,13 +32,17 @@ export function parseDocumentAnnotationHash(hash: string): DocumentAnnotationHas
documentKey,
threadId: threadId && threadId.length > 0 ? threadId : null,
commentId: commentId && commentId.length > 0 ? commentId : null,
viewer: params.get("viewer") === "full" ? "full" : null,
};
}
export function buildDocumentAnnotationHash(target: DocumentAnnotationHashTarget): string {
export function buildDocumentAnnotationHash(
target: Omit<DocumentAnnotationHashTarget, "viewer"> & { viewer?: "full" | null },
): string {
const params = new URLSearchParams();
if (target.threadId) params.set("thread", target.threadId);
if (target.commentId) params.set("comment", target.commentId);
if (target.viewer) params.set("viewer", target.viewer);
const qs = params.toString();
const encodedKey = encodeURIComponent(target.documentKey);
return qs ? `${DOCUMENT_HASH_PREFIX}${encodedKey}&${qs}` : `${DOCUMENT_HASH_PREFIX}${encodedKey}`;

View File

@ -13,6 +13,7 @@ describe("resolveIssueDocumentDeepLink", () => {
kind: "properties-pane",
tab: "plans",
documentKey: "plan",
maximize: false,
});
});
@ -21,6 +22,22 @@ describe("resolveIssueDocumentDeepLink", () => {
kind: "properties-pane",
tab: "document",
documentKey: "qa evidence",
maximize: false,
});
});
it("requests the maximized pane for viewer=full deep links", () => {
expect(resolveIssueDocumentDeepLink("#document-direction-package&viewer=full")).toEqual({
kind: "properties-pane",
tab: "document",
documentKey: "direction-package",
maximize: true,
});
expect(resolveIssueDocumentDeepLink("#document-plan&viewer=full")).toEqual({
kind: "properties-pane",
tab: "plans",
documentKey: "plan",
maximize: true,
});
});

View File

@ -3,14 +3,16 @@ import { parseDocumentAnnotationHash } from "./document-annotation-hash";
export type IssueDocumentDeepLinkRoute =
| { kind: "continuation-summary" }
| { kind: "properties-pane"; tab: "plans"; documentKey: "plan" }
| { kind: "properties-pane"; tab: "document"; documentKey: string };
| { kind: "properties-pane"; tab: "plans"; documentKey: "plan"; maximize: boolean }
| { kind: "properties-pane"; tab: "document"; documentKey: string; maximize: boolean };
/**
* Maps an issue document hash to the surface that owns that document.
*
* The continuation summary remains in the activity/handoff surface, the plan
* keeps its dedicated pane tab, and every other document opens in its own tab.
* `viewer=full` (LOOA-2181) additionally requests the maximized pane so
* external links (Slack approval cards) land on a full-size reading surface.
*/
export function resolveIssueDocumentDeepLink(hash: string): IssueDocumentDeepLinkRoute | null {
const target = parseDocumentAnnotationHash(hash);
@ -19,8 +21,9 @@ export function resolveIssueDocumentDeepLink(hash: string): IssueDocumentDeepLin
if (target.documentKey === ISSUE_CONTINUATION_SUMMARY_DOCUMENT_KEY) {
return { kind: "continuation-summary" };
}
const maximize = target.viewer === "full";
if (target.documentKey === "plan") {
return { kind: "properties-pane", tab: "plans", documentKey: "plan" };
return { kind: "properties-pane", tab: "plans", documentKey: "plan", maximize };
}
return { kind: "properties-pane", tab: "document", documentKey: target.documentKey };
return { kind: "properties-pane", tab: "document", documentKey: target.documentKey, maximize };
}

View File

@ -118,7 +118,10 @@ const mockLocation = vi.hoisted(() => ({
const mockOpenPanel = vi.hoisted(() => vi.fn());
const mockClosePanel = vi.hoisted(() => vi.fn());
const mockSetPanelVisible = vi.hoisted(() => vi.fn());
const mockRequestPanelMaximize = vi.hoisted(() => vi.fn());
const mockClearPanelMaximizeRequest = vi.hoisted(() => vi.fn());
const mockPanelState = vi.hoisted(() => ({ panelVisible: true }));
const mockRouteParams = vi.hoisted(() => ({ issueId: "PAP-1" }));
const mockSidebarState = vi.hoisted(() => ({ isMobile: false }));
const mockIssuePropertiesRender = vi.hoisted(() => vi.fn());
const mockTaskSidePanelRender = vi.hoisted(() => vi.fn());
@ -216,7 +219,7 @@ vi.mock("@/lib/router", () => ({
useLocation: () => mockLocation,
useNavigate: () => mockNavigate,
useNavigationType: () => "PUSH",
useParams: () => ({ issueId: "PAP-1" }),
useParams: () => ({ ...mockRouteParams }),
}));
vi.mock("../context/CompanyContext", () => ({
@ -266,6 +269,8 @@ vi.mock("../context/PanelContext", () => ({
closePanel: mockClosePanel,
panelVisible: mockPanelState.panelVisible,
setPanelVisible: mockSetPanelVisible,
requestPanelMaximize: mockRequestPanelMaximize,
clearPanelMaximizeRequest: mockClearPanelMaximizeRequest,
}),
}));
@ -1347,6 +1352,8 @@ describe("IssueDetail", () => {
mockOpenPanel.mockClear();
mockClosePanel.mockClear();
mockSetPanelVisible.mockClear();
mockRequestPanelMaximize.mockClear();
mockClearPanelMaximizeRequest.mockClear();
mockSetBreadcrumbPanelControl.mockClear();
mockSetMobileToolbar.mockClear();
mockIssuePropertiesRender.mockClear();
@ -1364,6 +1371,7 @@ describe("IssueDetail", () => {
mockLocation.search = "";
mockLocation.hash = "";
mockLocation.state = null;
mockRouteParams.issueId = "PAP-1";
});
afterEach(async () => {
@ -1802,6 +1810,84 @@ describe("IssueDetail", () => {
});
});
it("maximizes the desktop pane once per viewer=full deep link", async () => {
mockPanelState.panelVisible = false;
mockLocation.hash = "#document-qa-evidence&viewer=full";
mockIssuesApi.get.mockResolvedValue(createIssue());
await act(async () => {
root.render(
<QueryClientProvider client={queryClient}>
<IssueDetail />
</QueryClientProvider>,
);
});
await waitForAssertion(() => {
expect(mockSetPanelVisible).toHaveBeenCalledWith(true);
expect(mockRequestPanelMaximize).toHaveBeenCalledTimes(1);
});
// Replaying the same hash (same-page link click) reopens the document but
// must not re-maximize a pane the user may have deliberately restored.
const link = document.createElement("a");
link.href = "#document-qa-evidence&viewer=full";
link.textContent = "QA evidence";
container.appendChild(link);
await act(async () => link.click());
expect(mockRequestPanelMaximize).toHaveBeenCalledTimes(1);
// Ending the deep link drops the pending request and re-arms the guard.
mockLocation.hash = "";
await act(async () => {
root.render(
<QueryClientProvider client={queryClient}>
<IssueDetail />
</QueryClientProvider>,
);
});
await waitForAssertion(() => {
expect(mockClearPanelMaximizeRequest).toHaveBeenCalled();
});
});
it("re-maximizes when navigating to another issue with an identical viewer=full hash", async () => {
mockPanelState.panelVisible = false;
mockLocation.hash = "#document-qa-evidence&viewer=full";
mockIssuesApi.get.mockResolvedValue(createIssue());
await act(async () => {
root.render(
<QueryClientProvider client={queryClient}>
<IssueDetail />
</QueryClientProvider>,
);
});
await waitForAssertion(() => {
expect(mockRequestPanelMaximize).toHaveBeenCalledTimes(1);
});
// Navigate to a sibling issue whose URL carries the same document hash.
// IssueDetail stays mounted; the destination pane must still maximize.
mockRouteParams.issueId = "PAP-2";
mockLocation.pathname = "/issues/PAP-2";
mockIssuesApi.get.mockResolvedValue(
createIssue({ id: "issue-2", identifier: "PAP-2" }),
);
await act(async () => {
root.render(
<QueryClientProvider client={queryClient}>
<IssueDetail />
</QueryClientProvider>,
);
});
await waitForAssertion(() => {
expect(mockRequestPanelMaximize).toHaveBeenCalledTimes(2);
});
});
it("opens the mobile properties sheet for a document deep link", async () => {
mockSidebarState.isMobile = true;
mockLocation.hash = "#document-qa-evidence";

View File

@ -2670,7 +2670,14 @@ export function IssueDetail() {
? "mx-auto w-full max-w-(--tc-shell-max-w)"
: undefined;
const { openNewIssue } = useDialogActions();
const { openPanel, closePanel, panelVisible, setPanelVisible } = usePanel();
const {
openPanel,
closePanel,
panelVisible,
setPanelVisible,
requestPanelMaximize,
clearPanelMaximizeRequest,
} = usePanel();
const {
setBreadcrumbs,
setBreadcrumbToolbar,
@ -5398,6 +5405,12 @@ export function IssueDetail() {
sourceBreadcrumb.href,
]);
// One maximize request per issue + `viewer=full` hash: routing re-runs
// whenever a callback dependency changes identity, and re-requesting then
// would re-maximize a pane the user deliberately restored. The key carries
// the issue param so navigating to another issue with an identical hash
// still maximizes the destination pane.
const lastMaximizeRequestKeyRef = useRef<string | null>(null);
const routeIssueDocumentDeepLink = useCallback(
(hash: string) => {
const route = resolveIssueDocumentDeepLink(hash);
@ -5421,6 +5434,16 @@ export function IssueDetail() {
setPanelBeforePlanOverrideIssueId(issue.id);
}
setPanelVisible(true);
// `viewer=full` (LOOA-2181): external links (Slack approval cards)
// land with the pane maximized. Mobile uses the sheet, which is
// already full-screen, so the request is desktop-only.
if (route.maximize) {
const requestKey = `${issueId ?? ""}::${hash}`;
if (lastMaximizeRequestKeyRef.current !== requestKey) {
lastMaximizeRequestKeyRef.current = requestKey;
requestPanelMaximize();
}
}
}
const targetIssueId = issue?.id ?? issueId ?? "";
setDocumentDeepLink((current) => ({
@ -5438,6 +5461,7 @@ export function IssueDetail() {
issue?.id,
issueId,
setPanelVisible,
requestPanelMaximize,
suppressPanelUntilPlan,
taskChatShellEnabled,
],
@ -5446,8 +5470,21 @@ export function IssueDetail() {
useEffect(() => {
if (!routeIssueDocumentDeepLink(location.hash)) {
setDocumentDeepLink(null);
// The deep link ended (hash cleared or issue changed): drop any
// maximize request the panel never consumed so it cannot maximize a
// later, unrelated panel, and re-arm for the next viewer=full hash.
lastMaximizeRequestKeyRef.current = null;
clearPanelMaximizeRequest();
}
}, [issueId, location.hash, routeIssueDocumentDeepLink]);
}, [issueId, location.hash, routeIssueDocumentDeepLink, clearPanelMaximizeRequest]);
// Leaving the issue page entirely also ends the deep link's lifetime.
useEffect(
() => () => {
clearPanelMaximizeRequest();
},
[clearPanelMaximizeRequest],
);
// React Router does not emit a location update when the user clicks a link
// whose hash is already current. Capture that repeated intent so a manually