feat: add provider column, commission tracking, and report provider filter

- Claims & Payments: save npiProviderId when submitting MH claim; sync between claim and payment on update
- Claims table: add Provider column showing rendering provider name
- Payments table: add Provider column + purple Commissioned badge on status
- Claim edit modal: add Rendering Provider dropdown (defaults to Mary Scannell)
- Payment edit modal: add Rendering Provider dropdown + Commissioned metadata display
- Reports page: add Provider filter dropdown (dynamic from NPI providers settings)
- Reports page: remove Collections by Doctor report type and Select Doctor dropdown
- Commission section: new section in reports page with date range + provider filter, shows eligible paid claims/payments per provider, multi-select checkboxes, Pay Commission modal with print + save, marks payments as commissioned so they are excluded from future cycles
- DB: add CommissionBatch and CommissionBatchItem tables; backfill Payment.npiProviderId from linked claims
- Backend: PATCH /api/payments/:id/provider syncs to linked claim; PUT /api/claims/:id syncs to linked payment; new /api/commissions routes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/routes/index.ts

@@ -31,6 +31,7 @@ import officeHoursRoutes from "./office-hours";
 import officeContactRoutes from "./office-contact";
 import procedureTimeslotRoutes from "./procedure-timeslot";
 import insuranceContactsRoutes from "./insurance-contacts";
+import commissionsRoutes from "./commissions";
 
 const router = Router();
 
@@ -66,5 +67,6 @@ router.use("/office-hours", officeHoursRoutes);
 router.use("/office-contact", officeContactRoutes);
 router.use("/procedure-timeslot", procedureTimeslotRoutes);
 router.use("/insurance-contacts", insuranceContactsRoutes);
+router.use("/commissions", commissionsRoutes);
 
 export default router;