v4.0.0

First release under its own name and from its own repository. It was @docspace/ui-kit@0.0.1,
a workspace package of the DocSpace client resolved to its source root; it is now
@onlyoffice/apps-ui-kit, built and consumed as a package. The version follows the
ONLYOFFICE Apps 4.0 line.

Changed

• Renamed from @docspace/ui-kit to @onlyoffice/apps-ui-kit
• ESM only: dist/esm/** and .d.mts declarations in dist/types/**; no CJS output
• An exports map decides what resolves: ., ./styles.css, ./package.json,
  ./locales/*, ./styles/* and a ./* wildcard onto <subpath>/index.js. A plain
  (non-module) stylesheet is reached only through the module that imports it
• One CSS file per module, imported by that module; dist/styles.css still holds the
  whole sheet
• Dependencies split three ways: 32 dependencies; react, react-dom, i18next and
  react-i18next as required peers; 15 optional peers needed only by the portal-internal
  modules (@onlyoffice/ai-chat ^1.0.0, mobx, mobx-react, axios, socket.io-client,
  react-router, the markdown/KaTeX stack, @onlyoffice/document-editor-react)
• @onlyoffice/docspace-api-sdk comes from npm (^3.7.0); react/react-dom peers are
  ^19.0.0; i18next 25, react-i18next 15, react-svg 16.4.2
• providers/api and providers/Providers left providers/index.ts; import them by subpath
• The hooks barrel is exported from the root
• Article / ArticleLiveChat drive Zendesk through the messaging API; zendeskEmail,
  chatDisplayName and Zendesk's config are gone
• DocumentEditor takes either documentServerUrl + config, or fileId; with neither
  it reports through onLoadComponentError instead of opening file 1
• The section header has its height (69/61/53px) and background back. This changes the
  portal's layout
• TextInput, Textarea, Checkbox, ComboBox no longer default tabIndex to -1
• ModalDialog puts role="dialog" and aria-modal on the dialog surface, not the
  overlay
• Aside is a flex column whose body fills the remaining height; only aria-* props go
  to the <aside>, everything else to the header
• DateTimePickerProps includes the required translations
• TwoStateToggle defaults name the product ONLYOFFICE Apps: title is
  "ONLYOFFICE Apps design", ariaLabel "Switch ONLYOFFICE Apps design", and confirmBody ends
  "…the classic ONLYOFFICE Apps view." A test querying the old accessible name fails
• ThemeProvider no longer fetches the portal palette (the call never worked); pass
  colorTheme

Added

• FilterInput and StatusMessage as named exports
• Text, Heading, Link: role, aria-label, aria-live, aria-hidden
• Textarea and ModalDialog: aria-label, aria-labelledby, aria-describedby
• FieldContainer: labelFor
• A README for every component and public provider; docs/getting-started.md,
  docs/components.md and docs/public-api.md
• docs/plugin-surface.json: every name the root barrel exports, with its kind and module

Fixed

• ImageEditor crash on render; icons keep their viewBox
• Selector no longer scrolls the page on mount
• RoomLogoCoverDialog fits the window on first open
• MCPServersSelector loads the portal logo from the ApiProvider's baseUrl
• Secondary scaled Tabs no longer report false overflow
• RoomIcon without logo draws initials
• Uploader's targetId accepts string | number
• ModalDialog no longer leaks touchend listeners
• ThemeProvider follows a colorTheme that arrives after the first render
• Two mounted Toasts no longer throw
• AIAgentSelector no longer disables every agent for a right the folder never carries
• Missing locales/en keys for Filter and the AI agent export labels
• Brand and constant lookups survive a second module instance

Known issues

• The root barrel needs mobx, mobx-react, react-router and axios to build (via
  billing and uploader); import by subpath to avoid them