feat: add PreAuth tab, preauth selenium flow, and PreAuth No column

- Insurance Forms modal: split into Insurance Claim / PreAuth tabs
- PreAuth tab: same patient info + service lines, no toggle/direct combos
- Excluded Recalls & New Patients, Composite Fillings (Front/Back), Pedo from PreAuth combos
- Extractions: replaced Simple/Surg/Baby Teeth EXT with Full Bony EXT (D7240)
- MH PreAuth button: rewritten selenium worker to use masshealth-dental.org,
  selects Dental Prior Authorization (2nd option), skips Date of Service field
- agent.py: convert pdf_path to pdf_url for /claim-pre-auth endpoint
- nginx + Express: raise body size limit to 50mb (fix 413 errors)
- DB schema: appointmentId optional on Claim, add preAuthNumber field, add PREAUTH status
- Backend: create PREAUTH claim record on preauth submit, save preAuthNumber on completion
- Claims table: add PreAuth No column (blue) next to Claim No

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

packages/db/shared/schemas/objects/ClaimCreateManyInput.schema.ts

@@ -9,7 +9,7 @@ import { JsonValueSchema as jsonSchema } from '../../helpers/json-helpers';
 const makeSchema = () => z.object({
   id: z.number().int().optional(),
   patientId: z.number().int(),
-  appointmentId: z.number().int(),
+  appointmentId: z.number().int().optional().nullable(),
   userId: z.number().int(),
   staffId: z.number().int(),
   patientName: z.string(),
@@ -24,6 +24,7 @@ const makeSchema = () => z.object({
   updatedAt: z.coerce.date().optional(),
   status: ClaimStatusSchema.optional(),
   claimNumber: z.string().optional().nullable(),
+  preAuthNumber: z.string().optional().nullable(),
   npiProviderId: z.number().int().optional().nullable()
 }).strict();
 export const ClaimCreateManyInputObjectSchema: z.ZodType<Prisma.ClaimCreateManyInput> = makeSchema() as unknown as z.ZodType<Prisma.ClaimCreateManyInput>;