feat: AI chat system with LangGraph, multi-step patient flows, and appointment rescheduling

- Add floating chat window Hand-off to AI toggle (per-patient) and after-hours AI toggle (global)
- Add LangGraph-powered appointment reminder flow: AI introduces itself, classifies YES/NO, handles confirmation with appointment date/time
- Add multi-step rescheduling flow: ASAP vs next week, tomorrow offer, Mon/Tue/Wed picker, morning/afternoon time slot — automatically updates appointment in DB
- Add new patient / after-hours flow: new vs existing patient, dental insurance check, MassHealth Selenium eligibility check (auto-uses saved member ID + DOB for existing patients), self-pay fallback
- Add AI Chat Settings page (Settings → Advanced) with editable greeting templates and LangGraph flow diagrams for both reminder and new-patient flows
- Add Schedule a New Patient template option in chat window, starts new-patient conversation flow
- Add GET/PUT endpoints for AI handoff, after-hours handoff, and AI chat templates
- Add multilingual support (7 languages) across all AI reply nodes with LLM generation and hardcoded fallbacks
- Add pending reschedule in-memory store and conversation stage tracking across all flows

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

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

@@ -0,0 +1,27 @@
+import * as z from 'zod';
+import type { Prisma } from '../../../generated/prisma';
+import { InsuranceContactCreateWithoutUserInputObjectSchema as InsuranceContactCreateWithoutUserInputObjectSchema } from './InsuranceContactCreateWithoutUserInput.schema';
+import { InsuranceContactUncheckedCreateWithoutUserInputObjectSchema as InsuranceContactUncheckedCreateWithoutUserInputObjectSchema } from './InsuranceContactUncheckedCreateWithoutUserInput.schema';
+import { InsuranceContactCreateOrConnectWithoutUserInputObjectSchema as InsuranceContactCreateOrConnectWithoutUserInputObjectSchema } from './InsuranceContactCreateOrConnectWithoutUserInput.schema';
+import { InsuranceContactUpsertWithWhereUniqueWithoutUserInputObjectSchema as InsuranceContactUpsertWithWhereUniqueWithoutUserInputObjectSchema } from './InsuranceContactUpsertWithWhereUniqueWithoutUserInput.schema';
+import { InsuranceContactCreateManyUserInputEnvelopeObjectSchema as InsuranceContactCreateManyUserInputEnvelopeObjectSchema } from './InsuranceContactCreateManyUserInputEnvelope.schema';
+import { InsuranceContactWhereUniqueInputObjectSchema as InsuranceContactWhereUniqueInputObjectSchema } from './InsuranceContactWhereUniqueInput.schema';
+import { InsuranceContactUpdateWithWhereUniqueWithoutUserInputObjectSchema as InsuranceContactUpdateWithWhereUniqueWithoutUserInputObjectSchema } from './InsuranceContactUpdateWithWhereUniqueWithoutUserInput.schema';
+import { InsuranceContactUpdateManyWithWhereWithoutUserInputObjectSchema as InsuranceContactUpdateManyWithWhereWithoutUserInputObjectSchema } from './InsuranceContactUpdateManyWithWhereWithoutUserInput.schema';
+import { InsuranceContactScalarWhereInputObjectSchema as InsuranceContactScalarWhereInputObjectSchema } from './InsuranceContactScalarWhereInput.schema'
+
+const makeSchema = () => z.object({
+  create: z.union([z.lazy(() => InsuranceContactCreateWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactCreateWithoutUserInputObjectSchema).array(), z.lazy(() => InsuranceContactUncheckedCreateWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactUncheckedCreateWithoutUserInputObjectSchema).array()]).optional(),
+  connectOrCreate: z.union([z.lazy(() => InsuranceContactCreateOrConnectWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactCreateOrConnectWithoutUserInputObjectSchema).array()]).optional(),
+  upsert: z.union([z.lazy(() => InsuranceContactUpsertWithWhereUniqueWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactUpsertWithWhereUniqueWithoutUserInputObjectSchema).array()]).optional(),
+  createMany: z.lazy(() => InsuranceContactCreateManyUserInputEnvelopeObjectSchema).optional(),
+  set: z.union([z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema), z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema).array()]).optional(),
+  disconnect: z.union([z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema), z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema).array()]).optional(),
+  delete: z.union([z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema), z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema).array()]).optional(),
+  connect: z.union([z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema), z.lazy(() => InsuranceContactWhereUniqueInputObjectSchema).array()]).optional(),
+  update: z.union([z.lazy(() => InsuranceContactUpdateWithWhereUniqueWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactUpdateWithWhereUniqueWithoutUserInputObjectSchema).array()]).optional(),
+  updateMany: z.union([z.lazy(() => InsuranceContactUpdateManyWithWhereWithoutUserInputObjectSchema), z.lazy(() => InsuranceContactUpdateManyWithWhereWithoutUserInputObjectSchema).array()]).optional(),
+  deleteMany: z.union([z.lazy(() => InsuranceContactScalarWhereInputObjectSchema), z.lazy(() => InsuranceContactScalarWhereInputObjectSchema).array()]).optional()
+}).strict();
+export const InsuranceContactUpdateManyWithoutUserNestedInputObjectSchema: z.ZodType<Prisma.InsuranceContactUpdateManyWithoutUserNestedInput> = makeSchema() as unknown as z.ZodType<Prisma.InsuranceContactUpdateManyWithoutUserNestedInput>;
+export const InsuranceContactUpdateManyWithoutUserNestedInputObjectZodSchema = makeSchema();