feat: implement relational lead origins with team assignments

- Dropped simple origins table in favor of origin_groups and origin_items to match the Funnels architecture.

- Added origin_group_id to teams table to assign specific origins to specific teams.

- Updated /admin/origins page to support creating origin groups, adding origin items to them, and assigning teams to groups.

- Updated Dashboard and UserDetail pages to dynamically load the exact origin items belonging to the active team/user.

components/Layout.tsx

@@ -3,7 +3,7 @@ import { NavLink, useLocation, useNavigate } from 'react-router-dom';
 import { 
   LayoutDashboard, Users, UserCircle, Bell, Search, Menu, X, LogOut, 
   Hexagon, Settings, Building2, Sun, Moon, Loader2, Layers,
-  ChevronLeft, ChevronRight, Key
+  ChevronLeft, ChevronRight, Key, Target
 } from 'lucide-react';
 import { 
   getAttendances, getUsers, getUserById, logout, searchGlobal, 
@@ -240,6 +240,7 @@ export const Layout: React.FC<{ children: React.ReactNode }> = ({ children }) =>
                   <SidebarItem to="/admin/users" icon={Users} label="Membros" collapsed={isSidebarCollapsed} />
                   <SidebarItem to="/admin/teams" icon={Building2} label={currentUser.role === 'manager' ? 'Meu Time' : 'Times'} collapsed={isSidebarCollapsed} />
                   <SidebarItem to="/admin/funnels" icon={Layers} label="Gerenciar Funis" collapsed={isSidebarCollapsed} />
+                  <SidebarItem to="/admin/origins" icon={Target} label="Origens de Lead" collapsed={isSidebarCollapsed} />
                 </>
               )}
             </>