feat: chatbot rendering provider override and NPI provider ordering

- AI chat extracts 'with provider <name>' and routes claim to that provider
- Claim form reads provider from sessionStorage before any async effects run,
  preventing saved claim/procedure data from overriding the chatbot selection
- NPI provider settings table shows Provider #1 / #2 labels with up/down
  reorder buttons; Provider #1 is always the default for claims
- Default provider now uses sortOrder instead of hardcoded 'Mary Scannell'
- Added sortOrder column to NpiProvider schema with migration

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

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

@@ -9,6 +9,7 @@ import { AppointmentProcedureCreateNestedManyWithoutNpiProviderInputObjectSchema
 const makeSchema = () => z.object({
   npiNumber: z.string(),
   providerName: z.string(),
+  sortOrder: z.number().int().optional(),
   createdAt: z.coerce.date().optional(),
   user: z.lazy(() => UserCreateNestedOneWithoutNpiProvidersInputObjectSchema),
   claims: z.lazy(() => ClaimCreateNestedManyWithoutNpiProviderInputObjectSchema).optional(),