feat: add Office Contact settings page and reorder Advanced sidebar

- Add OfficeContact Prisma model with receptionist name, dentist name, phone, email, fax fields
- Create GET/PUT /api/office-contact backend route and storage
- Add OfficeContactCard frontend component under Settings > Advanced
- Reorder Advanced sidebar: Office Hours → Office Contact → Twilio Settings → Google AI Settings

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

apps/Backend/src/routes/index.ts

@@ -27,6 +27,7 @@ import jobMonitorRoutes from "./job-monitor";
 import twilioRoutes from "./twilio";
 import aiSettingsRoutes from "./ai-settings";
 import officeHoursRoutes from "./office-hours";
+import officeContactRoutes from "./office-contact";
 
 const router = Router();
 
@@ -58,5 +59,6 @@ router.use("/job-monitor", jobMonitorRoutes);
 router.use("/twilio", twilioRoutes);
 router.use("/ai", aiSettingsRoutes);
 router.use("/office-hours", officeHoursRoutes);
+router.use("/office-contact", officeContactRoutes);
 
 export default router;

apps/Backend/src/routes/office-contact.ts

@@ -0,0 +1,39 @@
+import express, { Request, Response } from "express";
+import { storage } from "../storage";
+
+const router = express.Router();
+
+// GET /api/office-contact
+router.get("/", async (req: Request, res: Response): Promise<any> => {
+  try {
+    const userId = req.user?.id;
+    if (!userId) return res.status(401).json({ message: "Unauthorized" });
+
+    const record = await storage.getOfficeContact(userId);
+    return res.status(200).json(record ?? null);
+  } catch (err) {
+    return res.status(500).json({ error: "Failed to fetch office contact", details: String(err) });
+  }
+});
+
+// PUT /api/office-contact
+router.put("/", async (req: Request, res: Response): Promise<any> => {
+  try {
+    const userId = req.user?.id;
+    if (!userId) return res.status(401).json({ message: "Unauthorized" });
+
+    const { receptionistName, dentistName, phoneNumber, email, fax } = req.body;
+    const record = await storage.upsertOfficeContact(userId, {
+      receptionistName: receptionistName ?? undefined,
+      dentistName: dentistName ?? undefined,
+      phoneNumber: phoneNumber ?? undefined,
+      email: email ?? undefined,
+      fax: fax ?? undefined,
+    });
+    return res.status(200).json(record);
+  } catch (err) {
+    return res.status(500).json({ error: "Failed to save office contact", details: String(err) });
+  }
+});
+
+export default router;