feat: persist AI conversation state in DB and fix LangGraph flow bugs

- Replace in-memory Maps in aiHandoffStore with DB-backed async functions
  using new patient_conversation table (stage + aiHandoff per patient)
- Add afterHoursEnabled to ai_settings table (persists across restarts)
- Fix runtime crash in reschedule-graph: mon/tue/wed variables were out
  of scope in the next-week fallback branch (ReferenceError)
- Wire rescheduleGreeting and generalFallback chat templates through to
  LangGraph nodes so user-configured messages take effect
- Add otherNode to reminder-graph to handle unclassified patient replies
  (e.g. "I want another appointment") and route to booking flow
- Fetch chatTemplates once per webhook request instead of per stage

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

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

@@ -0,0 +1,49 @@
+import * as z from 'zod';
+import type { Prisma } from '../../../generated/prisma';
+import { PatientCreateNestedManyWithoutUserInputObjectSchema as PatientCreateNestedManyWithoutUserInputObjectSchema } from './PatientCreateNestedManyWithoutUserInput.schema';
+import { AppointmentCreateNestedManyWithoutUserInputObjectSchema as AppointmentCreateNestedManyWithoutUserInputObjectSchema } from './AppointmentCreateNestedManyWithoutUserInput.schema';
+import { StaffCreateNestedManyWithoutUserInputObjectSchema as StaffCreateNestedManyWithoutUserInputObjectSchema } from './StaffCreateNestedManyWithoutUserInput.schema';
+import { NpiProviderCreateNestedManyWithoutUserInputObjectSchema as NpiProviderCreateNestedManyWithoutUserInputObjectSchema } from './NpiProviderCreateNestedManyWithoutUserInput.schema';
+import { ClaimCreateNestedManyWithoutUserInputObjectSchema as ClaimCreateNestedManyWithoutUserInputObjectSchema } from './ClaimCreateNestedManyWithoutUserInput.schema';
+import { InsuranceCredentialCreateNestedManyWithoutUserInputObjectSchema as InsuranceCredentialCreateNestedManyWithoutUserInputObjectSchema } from './InsuranceCredentialCreateNestedManyWithoutUserInput.schema';
+import { PaymentCreateNestedManyWithoutUpdatedByInputObjectSchema as PaymentCreateNestedManyWithoutUpdatedByInputObjectSchema } from './PaymentCreateNestedManyWithoutUpdatedByInput.schema';
+import { DatabaseBackupCreateNestedManyWithoutUserInputObjectSchema as DatabaseBackupCreateNestedManyWithoutUserInputObjectSchema } from './DatabaseBackupCreateNestedManyWithoutUserInput.schema';
+import { BackupDestinationCreateNestedManyWithoutUserInputObjectSchema as BackupDestinationCreateNestedManyWithoutUserInputObjectSchema } from './BackupDestinationCreateNestedManyWithoutUserInput.schema';
+import { NotificationCreateNestedManyWithoutUserInputObjectSchema as NotificationCreateNestedManyWithoutUserInputObjectSchema } from './NotificationCreateNestedManyWithoutUserInput.schema';
+import { CloudFolderCreateNestedManyWithoutUserInputObjectSchema as CloudFolderCreateNestedManyWithoutUserInputObjectSchema } from './CloudFolderCreateNestedManyWithoutUserInput.schema';
+import { CloudFileCreateNestedManyWithoutUserInputObjectSchema as CloudFileCreateNestedManyWithoutUserInputObjectSchema } from './CloudFileCreateNestedManyWithoutUserInput.schema';
+import { CommunicationCreateNestedManyWithoutUserInputObjectSchema as CommunicationCreateNestedManyWithoutUserInputObjectSchema } from './CommunicationCreateNestedManyWithoutUserInput.schema';
+import { TwilioSettingsCreateNestedOneWithoutUserInputObjectSchema as TwilioSettingsCreateNestedOneWithoutUserInputObjectSchema } from './TwilioSettingsCreateNestedOneWithoutUserInput.schema';
+import { AiSettingsCreateNestedOneWithoutUserInputObjectSchema as AiSettingsCreateNestedOneWithoutUserInputObjectSchema } from './AiSettingsCreateNestedOneWithoutUserInput.schema';
+import { OfficeHoursCreateNestedOneWithoutUserInputObjectSchema as OfficeHoursCreateNestedOneWithoutUserInputObjectSchema } from './OfficeHoursCreateNestedOneWithoutUserInput.schema';
+import { OfficeContactCreateNestedOneWithoutUserInputObjectSchema as OfficeContactCreateNestedOneWithoutUserInputObjectSchema } from './OfficeContactCreateNestedOneWithoutUserInput.schema';
+import { ProcedureTimeslotCreateNestedOneWithoutUserInputObjectSchema as ProcedureTimeslotCreateNestedOneWithoutUserInputObjectSchema } from './ProcedureTimeslotCreateNestedOneWithoutUserInput.schema';
+import { InsuranceContactCreateNestedManyWithoutUserInputObjectSchema as InsuranceContactCreateNestedManyWithoutUserInputObjectSchema } from './InsuranceContactCreateNestedManyWithoutUserInput.schema'
+
+const makeSchema = () => z.object({
+  username: z.string(),
+  password: z.string(),
+  autoBackupEnabled: z.boolean().optional(),
+  usbBackupEnabled: z.boolean().optional(),
+  patients: z.lazy(() => PatientCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  appointments: z.lazy(() => AppointmentCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  staff: z.lazy(() => StaffCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  npiProviders: z.lazy(() => NpiProviderCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  claims: z.lazy(() => ClaimCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  insuranceCredentials: z.lazy(() => InsuranceCredentialCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  updatedPayments: z.lazy(() => PaymentCreateNestedManyWithoutUpdatedByInputObjectSchema).optional(),
+  backups: z.lazy(() => DatabaseBackupCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  backupDestinations: z.lazy(() => BackupDestinationCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  notifications: z.lazy(() => NotificationCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  cloudFolders: z.lazy(() => CloudFolderCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  cloudFiles: z.lazy(() => CloudFileCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  communications: z.lazy(() => CommunicationCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  twilioSettings: z.lazy(() => TwilioSettingsCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  aiSettings: z.lazy(() => AiSettingsCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  officeHours: z.lazy(() => OfficeHoursCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  officeContact: z.lazy(() => OfficeContactCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  procedureTimeslot: z.lazy(() => ProcedureTimeslotCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  insuranceContacts: z.lazy(() => InsuranceContactCreateNestedManyWithoutUserInputObjectSchema).optional()
+}).strict();
+export const UserCreateWithoutPatientConversationsInputObjectSchema: z.ZodType<Prisma.UserCreateWithoutPatientConversationsInput> = makeSchema() as unknown as z.ZodType<Prisma.UserCreateWithoutPatientConversationsInput>;
+export const UserCreateWithoutPatientConversationsInputObjectZodSchema = makeSchema();