feat: enhance workspace sidebar with create menu and document draft management

- Added a create menu in the WorkspaceSidebar for creating new documents (live docs, pages, whiteboards, databases, smart links, folders).
- Implemented document draft functionality to save and restore drafts for documents across various pages (ShedPage, SiloPage, SketchPage, SteadPage).
- Improved error handling in useDashboardDocuments for better user feedback on API errors.
- Introduced a NotificationBell component for displaying notifications with a read/unread state.
- Updated document update and publish logic to clear drafts upon successful updates.
- Enhanced user experience with keyboard shortcuts for editing and saving documents.

README.md

@@ -320,3 +320,64 @@ Next tenant work:
 - Workspace navigation now mirrors dashboard controls: “For you” links to the
   dashboard, while Recent, Favourite Projects, All Projects, and Templates
   use trailing chevrons and active flyout states.
+- Dashboard and workspace notification bells now share the same notification
+  feed, unread indicator, read-state behavior, and notification panel. The
+  workspace header no longer displays the redundant people icon.
+- Dashboard Feed activity now loads persisted per-document activity from the
+  collaboration API, orders it by newest event, links each event to its page,
+  and refreshes live every 15 seconds. Discover actions now open the existing
+  Templates or All Projects flyouts instead of being inert buttons.
+- Dashboard workspace selection now validates the locally stored workspace ID
+  against the authenticated user’s workspace memberships before requesting
+  documents. Stale or revoked workspace IDs are cleared, and 403 membership
+  errors are no longer incorrectly reported as MongoDB outages.
+- Authentication failures are now handled centrally: a protected API `401`
+  clears the stale local session and redirects to login, while protected routes
+  also require an access token instead of trusting only cached user metadata.
+  This prevents an expired token from leaving the dashboard visible while all
+  document and workspace requests fail.
+- Page editing now follows Confluence-style keyboard actions: `E` enters edit
+  mode, `Ctrl/Cmd+S` updates the draft, and `Ctrl/Cmd+Enter` publishes (or
+  unpublishes) the page. The buttons expose the same shortcuts visually and
+  through `aria-keyshortcuts`, while typing in form fields or the editor does
+  not trigger the edit shortcut.
+- Read-only page content now requires an explicit confirmation before editing:
+  double-clicking the content opens a “Would you like to edit this page?”
+  dialog, and only “Yes, edit” enables the editor. Escape and “No” leave the
+  page read-only.
+- Workspace titles now support fast renaming: double-clicking a title enters
+  title-edit mode and selects the complete name, while the sidebar Rename
+  action preselects the full existing name. Pressing Enter commits the title
+  change once and stops the event from affecting page editing shortcuts.
+- Unsaved edits now persist as per-document local drafts across workspace
+  navigation and reloads. Text pages and whiteboards restore a draft only when
+  it is newer than the server version, while successful Update, Publish,
+  history restore, archive, and delete operations clear the local draft.
+- Deleting the active file from the workspace sidebar now keeps navigation
+  inside the workspace: it opens the parent page, a remaining sibling, or the
+  containing space instead of always redirecting to the dashboard.
+- The workspace sidebar’s existing “Create new” button now opens the same
+  creation menu and uses the same page, whiteboard, space, and template
+  creation flows as the header Create button. Its original compact sidebar
+  appearance is preserved, with the menu opening upward to remain visible.
+- The workspace sidebar creation menu now floats between the sidebar and the
+  workspace content instead of being constrained inside the sidebar. It is
+  aligned to the existing button and remains upward-opening and accessible
+  without changing the button’s appearance.
+- File action menus opened from the workspace sidebar three-dot controls now
+  float outside the sidebar. They align to the left edge of the action button,
+  open downward for items with room below, and automatically open upward with
+  bottom-left alignment near the bottom of the list.
+- Dashboard Recent Activities now includes the user’s recently visited files,
+  even when no separate activity event exists, and labels those fallback
+  entries as recently opened. The Discover something new panel no longer
+  displays the redundant See all button.
+- Workspace editing shortcuts and title controls now apply consistently to
+  Silo pages, Sketch whiteboards, Shed documents, and Stead spaces. Each
+  supports E to edit, Ctrl/Cmd+S to update, Ctrl/Cmd+Enter to publish or
+  unpublish, double-click title selection, and Enter-to-commit title changes.
+  Stead plan controls also remain read-only until Edit mode is enabled.
+- Every workspace sidebar file row now has a plus create action. Its floating
+  Confluence-style menu supports Live Doc, Page, Whiteboard, Database, Smart
+  Link, and Folder actions, creating the corresponding Silos document or
+  container in the current workspace context.