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/UserUncheckedCreateWithoutPatientConversationsInput.schema.ts

@@ -0,0 +1,50 @@
+import * as z from 'zod';
+import type { Prisma } from '../../../generated/prisma';
+import { PatientUncheckedCreateNestedManyWithoutUserInputObjectSchema as PatientUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './PatientUncheckedCreateNestedManyWithoutUserInput.schema';
+import { AppointmentUncheckedCreateNestedManyWithoutUserInputObjectSchema as AppointmentUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './AppointmentUncheckedCreateNestedManyWithoutUserInput.schema';
+import { StaffUncheckedCreateNestedManyWithoutUserInputObjectSchema as StaffUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './StaffUncheckedCreateNestedManyWithoutUserInput.schema';
+import { NpiProviderUncheckedCreateNestedManyWithoutUserInputObjectSchema as NpiProviderUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './NpiProviderUncheckedCreateNestedManyWithoutUserInput.schema';
+import { ClaimUncheckedCreateNestedManyWithoutUserInputObjectSchema as ClaimUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './ClaimUncheckedCreateNestedManyWithoutUserInput.schema';
+import { InsuranceCredentialUncheckedCreateNestedManyWithoutUserInputObjectSchema as InsuranceCredentialUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './InsuranceCredentialUncheckedCreateNestedManyWithoutUserInput.schema';
+import { PaymentUncheckedCreateNestedManyWithoutUpdatedByInputObjectSchema as PaymentUncheckedCreateNestedManyWithoutUpdatedByInputObjectSchema } from './PaymentUncheckedCreateNestedManyWithoutUpdatedByInput.schema';
+import { DatabaseBackupUncheckedCreateNestedManyWithoutUserInputObjectSchema as DatabaseBackupUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './DatabaseBackupUncheckedCreateNestedManyWithoutUserInput.schema';
+import { BackupDestinationUncheckedCreateNestedManyWithoutUserInputObjectSchema as BackupDestinationUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './BackupDestinationUncheckedCreateNestedManyWithoutUserInput.schema';
+import { NotificationUncheckedCreateNestedManyWithoutUserInputObjectSchema as NotificationUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './NotificationUncheckedCreateNestedManyWithoutUserInput.schema';
+import { CloudFolderUncheckedCreateNestedManyWithoutUserInputObjectSchema as CloudFolderUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './CloudFolderUncheckedCreateNestedManyWithoutUserInput.schema';
+import { CloudFileUncheckedCreateNestedManyWithoutUserInputObjectSchema as CloudFileUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './CloudFileUncheckedCreateNestedManyWithoutUserInput.schema';
+import { CommunicationUncheckedCreateNestedManyWithoutUserInputObjectSchema as CommunicationUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './CommunicationUncheckedCreateNestedManyWithoutUserInput.schema';
+import { TwilioSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema as TwilioSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema } from './TwilioSettingsUncheckedCreateNestedOneWithoutUserInput.schema';
+import { AiSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema as AiSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema } from './AiSettingsUncheckedCreateNestedOneWithoutUserInput.schema';
+import { OfficeHoursUncheckedCreateNestedOneWithoutUserInputObjectSchema as OfficeHoursUncheckedCreateNestedOneWithoutUserInputObjectSchema } from './OfficeHoursUncheckedCreateNestedOneWithoutUserInput.schema';
+import { OfficeContactUncheckedCreateNestedOneWithoutUserInputObjectSchema as OfficeContactUncheckedCreateNestedOneWithoutUserInputObjectSchema } from './OfficeContactUncheckedCreateNestedOneWithoutUserInput.schema';
+import { ProcedureTimeslotUncheckedCreateNestedOneWithoutUserInputObjectSchema as ProcedureTimeslotUncheckedCreateNestedOneWithoutUserInputObjectSchema } from './ProcedureTimeslotUncheckedCreateNestedOneWithoutUserInput.schema';
+import { InsuranceContactUncheckedCreateNestedManyWithoutUserInputObjectSchema as InsuranceContactUncheckedCreateNestedManyWithoutUserInputObjectSchema } from './InsuranceContactUncheckedCreateNestedManyWithoutUserInput.schema'
+
+const makeSchema = () => z.object({
+  id: z.number().int().optional(),
+  username: z.string(),
+  password: z.string(),
+  autoBackupEnabled: z.boolean().optional(),
+  usbBackupEnabled: z.boolean().optional(),
+  patients: z.lazy(() => PatientUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  appointments: z.lazy(() => AppointmentUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  staff: z.lazy(() => StaffUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  npiProviders: z.lazy(() => NpiProviderUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  claims: z.lazy(() => ClaimUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  insuranceCredentials: z.lazy(() => InsuranceCredentialUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  updatedPayments: z.lazy(() => PaymentUncheckedCreateNestedManyWithoutUpdatedByInputObjectSchema).optional(),
+  backups: z.lazy(() => DatabaseBackupUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  backupDestinations: z.lazy(() => BackupDestinationUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  notifications: z.lazy(() => NotificationUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  cloudFolders: z.lazy(() => CloudFolderUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  cloudFiles: z.lazy(() => CloudFileUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  communications: z.lazy(() => CommunicationUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional(),
+  twilioSettings: z.lazy(() => TwilioSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  aiSettings: z.lazy(() => AiSettingsUncheckedCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  officeHours: z.lazy(() => OfficeHoursUncheckedCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  officeContact: z.lazy(() => OfficeContactUncheckedCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  procedureTimeslot: z.lazy(() => ProcedureTimeslotUncheckedCreateNestedOneWithoutUserInputObjectSchema).optional(),
+  insuranceContacts: z.lazy(() => InsuranceContactUncheckedCreateNestedManyWithoutUserInputObjectSchema).optional()
+}).strict();
+export const UserUncheckedCreateWithoutPatientConversationsInputObjectSchema: z.ZodType<Prisma.UserUncheckedCreateWithoutPatientConversationsInput> = makeSchema() as unknown as z.ZodType<Prisma.UserUncheckedCreateWithoutPatientConversationsInput>;
+export const UserUncheckedCreateWithoutPatientConversationsInputObjectZodSchema = makeSchema();