feat: add personal workspace creation for legacy users and invitation landing page

README.md

@@ -265,6 +265,8 @@ npm run build
 - Added workspace-scoped MongoDB document metadata and dashboard filtering.
 - Existing owner-owned spaces and pages are backfilled into the selected
   workspace on first workspace load without changing their content or sharing.
+- Legacy users without a tenant are automatically given a personal
+  organization and workspace, so Invite Fellow works immediately after login.
 - New document creation rejects workspace IDs the authenticated user cannot
   access.
 - Added a workspace administration page at `/settings/workspaces` for
@@ -276,6 +278,7 @@ npm run build
 - Removed the unused Customize sidebar action and its controls.
 - Updated Invite Fellow to create a workspace invitation and open a prefilled
   email containing the invitation link.
+- Added the invitation landing page at `/invite/:token`.
 
 Validation completed:
 
@@ -292,3 +295,28 @@ Next tenant work:
 - Add invitation and audit history views to the administration page.
 - Add organization-level security settings.
 - Add authenticated browser coverage for workspace creation and role denial.
+
+#### Workspace navigation polish
+
+- Workspace and page views now retain the primary dashboard navigation:
+  For you, Templates, Recent, Favourite Projects, and All Projects.
+- The navigation appears above the current space/page tree instead of replacing
+  the dashboard experience; the duplicate Dashboard button was removed because
+  the workspace header already provides that route.
+- Space views now keep the sidebar visible, with the active space and its
+  content shown beneath the primary navigation.
+- Navigating to a child page now automatically keeps its ancestor pages
+  expanded in the tree.
+- New child pages are created as `Untitled` so users can name them directly.
+- Template content now stays isolated to the page created from that template;
+  switching between pages remounts the editor for the active document instead
+  of reusing stale content from the previous page.
+- Workspace sidebar navigation now opens the corresponding dashboard view:
+  Recent, Favourite Projects, All Projects, and Templates no longer all open
+  the default dashboard state.
+- Workspace navigation now opens those flyouts in place without leaving the
+  current page or space. Dashboard and workspace navigation use matching
+  sidebar width, button height, padding, and text sizing.
+- 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.