feat: add Selenium Settings page to configure paymentGroupId per office

Adds a new Settings → Advanced → Selenium Settings page where the office
name (paymentGroupId) used in United/DentalHub portal dropdowns can be
configured without touching code. Previously hardcoded as "Summit Dental
Care"; now injected from DB into the three United workers at job dispatch.

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

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

@@ -0,0 +1,11 @@
+import * as z from 'zod';
+import type { Prisma } from '../../../generated/prisma';
+import { SeleniumSettingsSelectObjectSchema as SeleniumSettingsSelectObjectSchema } from './SeleniumSettingsSelect.schema';
+import { SeleniumSettingsIncludeObjectSchema as SeleniumSettingsIncludeObjectSchema } from './SeleniumSettingsInclude.schema'
+
+const makeSchema = () => z.object({
+  select: z.lazy(() => SeleniumSettingsSelectObjectSchema).optional(),
+  include: z.lazy(() => SeleniumSettingsIncludeObjectSchema).optional()
+}).strict();
+export const SeleniumSettingsArgsObjectSchema = makeSchema();
+export const SeleniumSettingsArgsObjectZodSchema = makeSchema();