Customizable dashboard with new widgets and sidebar improvements

[TechHutTV]

Summary

• Customizable dashboard: Users can now enable/disable and reorder the 9 grid widgets via a "Customize" dialog accessible from the dashboard header. Preferences are persisted per user per workspace in a new DashboardPreference table.
• 11 new dashboard widgets: Starred Files, Unread Messages, Recent Wiki Edits, Time Tracking, Upcoming Dates, Workspace Stats, Recent Files, My Wiki Edits, Mentions, Activity Feed, and an enhanced My Tasks widget with overdue grouping.
• Default layout: New users see Starred Files, Unread Messages, and Workspace Stats enabled by default; remaining widgets are available via the Customize dialog.
• Sidebar improvements: Added "+" button next to Knowledge header for creating wiki spaces, aligned logo/search bar separator lines, and clicking a wiki space name now navigates to its page listing.
• Widget hover fix: Removed clipped hover highlights on all dashboard widget list items.

Changes

Backend

• New DashboardPreference Prisma model with migration
• GET/PATCH /api/workspaces/:wid/dashboard/preferences endpoints
• Dashboard service returning project stats

Shared

• UpdateDashboardPreferenceSchema Zod schema with WidgetConfigItem type

Frontend

• Widget registry (GRID_WIDGETS, DEFAULT_WIDGET_ORDER)
• CustomizeDashboardDialog with toggle + reorder controls
• useDashboardPreferences / useUpdateDashboardPreferences hooks
• Dynamic widget rendering based on user preferences
• Sidebar: create-space button, border alignment fix, wiki space navigation fix