• feat(import-export): Add CSV import/export for clients with custom fields and contacts (Dries Peeters)
• feat: Add global custom field definitions with link template support (Dries Peeters)
• feat(billing): add paid status tracking for time entries with invoice reference (Dries Peeters)
• feat: Convert OAuth credentials section to dropdown in System Settings (Dries Peeters)
• Update dashboard: rename Project column to Source and make entries clickable (Dries Peeters)
• feat(clients): Add recent hours history to client detail page (Dries Peeters)
• feat: Enhance UI/UX with improved form validation and error handling (Dries Peeters)