fix: allow claims without appointment + support post/core multi-tooth input

- Make appointmentId nullable/optional in Prisma Zod schema via @zod rich
  comment so claims can be submitted without an existing appointment
- Convert undefined appointmentId to null in all claim form handlers and
  the backend claim creation endpoint
- Add AI classifier rule for expanding one procedure across multiple
  comma-separated tooth numbers (e.g. "post/core on #23, 24, 25, 26")
- Add "post/core" (slash) alias to CDT lookup maps

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

packages/db/shared/schemas/results/ClaimUpdateResult.schema.js

@@ -38,7 +38,7 @@ const z = __importStar(require("zod"));
 exports.ClaimUpdateResultSchema = z.nullable(z.object({
     id: z.number().int(),
     patientId: z.number().int(),
-    appointmentId: z.number().int(),
+    appointmentId: z.number().int().optional(),
     userId: z.number().int(),
     staffId: z.number().int(),
     patientName: z.string(),
@@ -53,9 +53,10 @@ exports.ClaimUpdateResultSchema = z.nullable(z.object({
     updatedAt: z.date(),
     status: z.unknown(),
     claimNumber: z.string().optional(),
+    preAuthNumber: z.string().optional(),
     npiProviderId: z.number().int().optional(),
     patient: z.unknown(),
-    appointment: z.unknown(),
+    appointment: z.unknown().optional(),
     user: z.unknown().optional(),
     staff: z.unknown().optional(),
     npiProvider: z.unknown().optional(),