feat(hotkeys): Refresh landing page with live demos

[KevinVandy]

• Rewrites the Hotkeys landing page. The old copy described features the library doesn't have, such as scope priority and press-and-hold gestures, so the new copy sticks to what the library does.
• Replaces the hero with a live demo that registers page-wide shortcuts (J/K, a G G sequence, X, ⌘S) plus a note textarea that shows single-key shortcuts being ignored while typing.
• Adds live demos for formatForDisplay across macOS, Windows, and Linux, for useHotkeyHint, and for useHotkeyRecorder with conflict detection. They load client-only through createIsomorphicFn and ClientOnly.
• Bumps @tanstack/react-hotkeys from 0.10.0 to 0.14.0. Sequences now use useHotkey with an array, and the rebinding copy covers app hotkeys (feat: Unify hotkeys and sequences, and add app hotkeys hotkeys#175).
• Changes the Hotkeys badge from alpha to beta.

Notes

The demos register real shortcuts on the page, including ⌘S, so the browser's save dialog is suppressed on this route. ⌘K is left alone because the site's search already uses it.

Summary by CodeRabbit

• New Features
  • Added interactive demos for page-level shortcuts, platform- and layout-aware formatting, shortcut hints, and rebinding with conflict feedback.
  • Added keycap displays in multiple sizes, including pressed-state styling.
• Updates
  • Refocused the landing page on typed shortcut strings, platform-specific labels, modifier hints, rebinding, keyboard edge cases, and Devtools, with editor-style completion and type-error examples.
  • Updated the hotkeys library status from alpha to beta.

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Latest commit: d1fce30

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• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing: 4

• package.json
• src/components/landing/HotkeysLanding.tsx
• src/components/landing/HotkeysLandingDemos.client.tsx
• src/libraries/libraries.ts

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📝 Walkthrough

The hotkeys landing page now presents typed-shortcut guidance and interactive demos. The change adds keycap components, updates the hotkey dependency range, and replaces the previous scope and gesture content.

Changes: Hotkeys landing page

Layer / File(s)	Summary
Hotkey dependency and keycap primitives package.json, src/components/landing/HotkeysKeycap.tsx	The @tanstack/react-hotkeys range changes from ^0.10.0 to ^0.14.0. Keycap and KeyCombo add sized key displays with pressed-state styling.
Landing page content and demo loading src/components/landing/HotkeysLanding.tsx	The page replaces scope and gesture content with typed-shortcut guidance, edge cases, platform labels, modifier hints, rebinding, and Devtools content. It adds client-only demos, a type-safety illustration, and loading placeholders.
Shortcut, formatting, and hint demos src/components/landing/HotkeysLandingDemos.client.tsx	ShortcutLab registers page shortcuts and displays shortcut state. FormatLab shows platform and keyboard-layout-specific labels. DefaultsLab shows formatted hints on toolbar actions.
Shortcut rebinding src/components/landing/HotkeysLandingDemos.client.tsx	RebindLab records a replacement shortcut for Quick open, excludes its registration from conflict detection, and displays cancellation or conflict messages.
Hotkeys library listing src/libraries/libraries.ts	The hotkeys library badge changes from alpha to beta.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant RebindLab
  participant ConflictDetection as Conflict detection
  participant QuickOpen as Quick open registration
  User->>RebindLab: Record a shortcut
  RebindLab->>ConflictDetection: Check conflicts, excluding Quick open
  ConflictDetection-->>RebindLab: Return conflict details or no conflict
  alt No conflict
    RebindLab->>QuickOpen: Replace the registered shortcut
  else Conflict
    RebindLab-->>User: Show rejection message
  end

Loading

Suggested reviewers: jhislop-design

Merge Risk: ⚪ Minimal · up to 601df

The refresh adds interactive hotkey demos, but available evidence does not establish a user-facing failure that should block merging.

Security architecture risk: 🔵 Low · up to d1d40

The new shortcuts affect keyboard behavior across the landing page, but their actions remain local to the demo. Rebinding has scoped registrations and lifecycle cleanup. No new privileged action or external data flow was identified; compatibility across existing shortcut consumers remains incompletely established.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The directly introduced event-handling scope is the visitor's document while the demos are mounted. The dependency upgrade additionally reaches existing application handlers, including bot mutation triggers, but the inspected demo callbacks do not delegate to those handlers or gain their authority.

Trust Boundaries and Controls

• observed — Recording starts through an explicit button action. During an active session, the shared recording guard suppresses application shortcut dispatch, and captured keydown events prevent defaults and propagation. Rebinding conflict detection excludes registrations named Quick open; it is not an authorization control.

Resilience and Maintainability Implications

• observed — Registration removal is handle-specific and removes a target's listeners only after its final registration is removed. Recording guards retain pending key-release protection after completion or cancellation, then clean up after releases or window blur. Sequence progress resets when recording intercepts an event.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 7.69% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 4 files. (1 skipped: 1…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: refreshing the Hotkeys landing page with live demos.

Full details: Docstring Coverage

Explanation

Docstring coverage is 7.69% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 4 files. (1 skipped: 1 unsupported.)

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Status	Name	Latest Commit	Updated (UTC)
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Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​tanstack/​react-hotkeys@​0.10.0 ⏵ 0.14.0	+23			+9

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Actionable comments posted: 1

---

• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @src/components/landing/HotkeysLandingDemos.client.tsx:
- Line 60: Update the setSelected navigation limit so repeated J presses cannot
select beyond the items displayed on the board; alternatively, render every
selectable item. Keep selection and the X action aligned with visible items.

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📒 Files selected for processing (4)

• package.json
• src/components/landing/HotkeysKeycap.tsx
• src/components/landing/HotkeysLanding.tsx
• src/components/landing/HotkeysLandingDemos.client.tsx

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[tannerlinsley]

I checked the selection issue against the current code. The board renders items.slice(0, 6), but J can advance through the entire array. Once there are seven items, it can select an invisible row and X acts on that row.

Let's keep the six-row layout and cap J at Math.min(items.length, 6) - 1. Please check adding enough notes to exceed six rows, then navigating down and toggling the last visible row. That should keep the selection and the action on screen.

[tannerlinsley]

Fixed the visible-row selection bound in 7c6e5a1. I added two notes to the five starting items in the browser, pressed J seven times, and confirmed selection stayed on the sixth visible row. X toggled that row. Typing jkx in the note field left the board selection and completion state unchanged.

The full pnpm test suite passed with the locked dependencies, and the commit hook passed again. CI on the new head and the remaining PR review gates still need to clear before merging.