feat: AI API Setting page with 4 provider sections and toggles

Add OpenAI, Claude AI, and DentalManagement AI sections to the AI API
Setting page, each with a masked API key input and an on/off toggle
(defaulting to off). Rename sidebar label from "Google AI Settings" to
"AI API Setting". Add provider-key and provider-enabled backend endpoints
and extend the AiSettings schema with 6 new fields.

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

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

@@ -5,6 +5,13 @@ import type { Prisma } from '../../../generated/prisma';
 const makeSchema = () => z.object({
   id: z.number().int().optional(),
   apiKey: z.string(),
+  aiEnabled: z.boolean().optional(),
+  openAiKey: z.string().optional(),
+  openAiEnabled: z.boolean().optional(),
+  claudeAiKey: z.string().optional(),
+  claudeAiEnabled: z.boolean().optional(),
+  dentalMgmtKey: z.string().optional(),
+  dentalMgmtEnabled: z.boolean().optional(),
   afterHoursEnabled: z.boolean().optional(),
   openPhoneReply: z.boolean().optional()
 }).strict();