Add Today dashboard foundation with permission-aware KPI summary API.

Replace hardcoded Today cards with a backend summary endpoint and composable frontend widgets filtered by org type and tab permissions.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/app.module.ts

@@ -17,6 +17,7 @@ import { TreatmentCatalogModule } from './modules/treatment-catalog/treatment-ca
 import { CatalogModule } from './modules/catalog/catalog.module';
 import { ProsthesisCatalogModule } from './modules/prosthesis-catalog/prosthesis-catalog.module';
 import { LabCaseCommentsModule } from './modules/lab-case-comments/lab-case-comments.module';
+import { TodayModule } from './modules/today/today.module';
 
 @Module({
   imports: [
@@ -37,6 +38,7 @@ import { LabCaseCommentsModule } from './modules/lab-case-comments/lab-case-comm
     LabCaseCommentsModule,
     StaffModule,
     OrganizationModule,
+    TodayModule,
     AdminModule.forRoot(),
   ],
   controllers: [AppController],