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.

App.tsx

@@ -9,6 +9,7 @@ import { ApiKeys } from './pages/ApiKeys';
 import { TeamManagement } from './pages/TeamManagement';
 import { Teams } from './pages/Teams';
 import { Funnels } from './pages/Funnels';
+import { Origins } from './pages/Origins';
 import { Login } from './pages/Login';
 import { ForgotPassword } from './pages/ForgotPassword';
 import { ResetPassword } from './pages/ResetPassword';
@@ -96,6 +97,7 @@ const App: React.FC = () => {
         <Route path="/admin/users" element={<AuthGuard roles={['super_admin', 'admin', 'manager']}><TeamManagement /></AuthGuard>} />
         <Route path="/admin/teams" element={<AuthGuard roles={['super_admin', 'admin', 'manager']}><Teams /></AuthGuard>} />
         <Route path="/admin/funnels" element={<AuthGuard roles={['super_admin', 'admin', 'manager']}><Funnels /></AuthGuard>} />
+        <Route path="/admin/origins" element={<AuthGuard roles={['super_admin', 'admin', 'manager']}><Origins /></AuthGuard>} />
         <Route path="/users/:id" element={<AuthGuard><UserDetail /></AuthGuard>} />
         <Route path="/attendances/:id" element={<AuthGuard><AttendanceDetail /></AuthGuard>} />
         <Route path="/super-admin" element={<AuthGuard roles={['super_admin']}><SuperAdmin /></AuthGuard>} />