feat: BCBS MA paper claim — fill 2024 ADA claim form; office NPI setting

- New GET /api/claims/:id/ada-form fills the 2024 ADA Dental Claim Form
  (J43024) with payer address, patient/subscriber, CDT lines, fees,
  missing teeth, billing (office) NPI and treating NPI; signatures blank
- "BCBS Claim (ADA Form)" button saves the claim and opens the PDF;
  Claim All routes BCBS patients to it; "Print ADA Form" in claim view
- Settings > NPI Providers: "Add Office NPI" (billing name, NPI, license,
  TIN) and optional per-provider license number
- Migration: office_contact billing fields, NpiProvider.licenseNumber

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/db/shared/helpers/decimal-helpers.ts

@@ -1,7 +1,8 @@
 import * as z from 'zod';
 
-import { Prisma } from '../../generated/prisma';
-import Decimal from 'decimal.js';
+import type { Prisma } from '../../generated/prisma';
+
+import Decimal from "decimal.js";
 
 // DECIMAL HELPERS
 //------------------------------------------------------
@@ -23,7 +24,7 @@ export const isValidDecimalInput = (
   if (v === undefined || v === null) return false;
   return (
     // Explicit instance checks first
-    v instanceof Prisma.Decimal ||
+    v instanceof Decimal ||
     // If Decimal.js is present and imported by the generator, this symbol exists at runtime
     // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore - Decimal may be undefined when not installed; codegen controls the import