Org Lens People Page & Crowdfunding Enhancements

New Features

• Introduces the foundational People page shell within Org Lens, establishing the page layout, a dynamic header that reflects the selected organization, and a seven-tab structure covering All Employees, Board, Committee, Key Contacts, Contributors, Event Attendees, and Trainees. Tab state persists across navigation, and the page is wired for a shared person profile panel as future tab content is built out.
• Adds a mock backend layer for the Crowdfunding module's My Initiatives, Initiative Detail, and My Donations pages, allowing frontend development to continue ahead of the production microservice. The My Donations view includes pagination support for contribution history.