feat: add AI Dental Shopping section with sidebar nav and Login Info page

- Add AI Dental Shopping to sidebar with Search/Tag and Login Info sub-pages
- Build full-stack Login Info CRUD: save vendor name, website, username, password per user
- Add ShoppingVendor Prisma model, run db push, regenerate client and Zod schemas
- Add storage layer, REST API at /api/shopping-vendors/, and frontend table with add/edit/delete modal

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

packages/db/shared/schemas/variants/input/ShoppingVendor.input.ts

@@ -0,0 +1,13 @@
+import * as z from 'zod';
+// prettier-ignore
+export const ShoppingVendorInputSchema = z.object({
+    id: z.number().int(),
+    userId: z.number().int(),
+    vendorName: z.string(),
+    websiteUrl: z.string(),
+    loginUsername: z.string(),
+    loginPassword: z.string(),
+    user: z.unknown()
+}).strict();
+
+export type ShoppingVendorInputType = z.infer<typeof ShoppingVendorInputSchema>;

packages/db/shared/schemas/variants/input/User.input.ts

@@ -12,6 +12,7 @@ export const UserInputSchema = z.object({
     npiProviders: z.array(z.unknown()),
     claims: z.array(z.unknown()),
     insuranceCredentials: z.array(z.unknown()),
+    shoppingVendors: z.array(z.unknown()),
     updatedPayments: z.array(z.unknown()),
     backups: z.array(z.unknown()),
     backupDestinations: z.array(z.unknown()),

packages/db/shared/schemas/variants/input/index.ts

@@ -14,6 +14,7 @@ export { ClaimInputSchema } from './Claim.input';
 export { ServiceLineInputSchema } from './ServiceLine.input';
 export { ClaimFileInputSchema } from './ClaimFile.input';
 export { InsuranceCredentialInputSchema } from './InsuranceCredential.input';
+export { ShoppingVendorInputSchema } from './ShoppingVendor.input';
 export { PdfGroupInputSchema } from './PdfGroup.input';
 export { PdfFileInputSchema } from './PdfFile.input';
 export { PaymentInputSchema } from './Payment.input';