feat(web): replace existing shortcuts with TanStack Hotkeys

[tibisabau]

Description

Replaced the existing custom keyboard shortcut implementation with TanStack Hotkeys library. This migration reduces the amount of custom code we need to maintain while leveraging a well-tested, production-ready hotkeys solution. TanStack Hotkeys provides a cleaner API and better support for advanced use cases like sequence shortcuts.

The migration involved:

• Replacing react-hotkeys-hook with @tanstack/react-hotkeys
• Refactoring useKeyboardEvent hook to use TanStack Hotkeys internally
• Updating all components that directly used react-hotkeys-hook
• Updating tests to work with the new implementation
• Maintaining backward compatibility with existing keyboard event handlers

Closes #1472.

The code in this pull request was generated by GitHub Copilot with the Claude Sonnet 4.5 model.

Checklist if Applicable

• The tests passed – yarn test packages/web/src/common/hooks/useKeyboardEvent.test.ts and yarn test packages/web/src/views/Forms/SomedayEventForm/useSomedayFormShortcuts.test.tsx
• Linting passed – yarn prettier . --write
• Documentation has been added
• CHANGELOG.md has been updated

[Copilot]

Pull request overview

This PR migrates the web app’s keyboard shortcut handling from react-hotkeys-hook (and some custom global keyboard plumbing) to TanStack Hotkeys, aiming to reduce custom maintenance while keeping existing shortcut behavior working.

Changes:

• Added @tanstack/react-hotkeys and removed react-hotkeys-hook.
• Updated form and calendar shortcut hooks/components to register TanStack hotkeys and normalized several key combo strings (e.g., $mod, arrow*).
• Refactored useKeyboardEvent to delegate to TanStack Hotkeys and updated its unit tests accordingly.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
yarn.lock	Adds TanStack hotkeys/store dependencies and removes react-hotkeys-hook.
packages/web/package.json	Swaps dependency from react-hotkeys-hook to @tanstack/react-hotkeys.
packages/web/src/views/Forms/SomedayEventForm/useSomedayFormShortcuts.ts	Updates Someday form hotkeys to TanStack format ($mod, arrow*).
packages/web/src/views/Forms/SomedayEventForm/useSomedayFormShortcuts.test.tsx	Adjusts mocks and expectations for TanStack hotkey combos.
packages/web/src/views/Forms/EventForm/EventForm.tsx	Migrates EventForm shortcuts to TanStack and updates combo strings/deps.
packages/web/src/views/Calendar/hooks/shortcuts/useFocusHotkey.ts	Migrates reminder hotkey hook to TanStack.
packages/web/src/views/Calendar/components/Dedication/Dedication.tsx	Migrates dedication modal shortcut hook to TanStack.
packages/web/src/common/hooks/useKeyboardEvent.ts	Replaces custom key stream logic with TanStack useHotkeys.
packages/web/src/common/hooks/useKeyboardEvent.test.ts	Reworks tests to mock TanStack useHotkeys and validate registration/behavior.

Comments suppressed due to low confidence (1)

packages/web/src/common/hooks/useKeyboardEvent.ts:25

• exactMatch is destructured with a default (exactMatch = true) but never used. With noUnusedLocals: true in tsconfig, this will fail TypeScript compilation. Either implement the exactMatch behavior (to preserve the prior API) or remove it from the options/destructuring to avoid the unused local.

export function useKeyboardEvent({
  combination,
  exactMatch = true,
  handler,
  listenWhileEditing,

[tyler-dane]

Thanks for the PR. However, e2e tests are failing and there are valid PR comments