feat: office address, multi-template SMS manager, hardcoded defaults with auto-seed

- Add streetAddress/city/state/zipCode fields to OfficeContact (schema + storage + UI)
- Support {officeAddress} variable in batch reminder SMS
- Replace single SMS template field with full CRUD template list (add/rename/edit/delete)
- Store SMS template list under _sms_template_list; first template synced to batch reminder
- Hardcode all AI chat template defaults into codebase (reminder SMS, greetings, fallback)
- Add seed-templates.ts that auto-seeds default templates for all users on server boot
- Update README: note that templates are auto-configured on first boot

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

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

@@ -22,7 +22,7 @@ router.put("/", async (req: Request, res: Response): Promise<any> => {
     const userId = req.user?.id;
     if (!userId) return res.status(401).json({ message: "Unauthorized" });
 
-    const { officeName, receptionistName, dentistName, phoneNumber, email, fax } = req.body;
+    const { officeName, receptionistName, dentistName, phoneNumber, email, fax, streetAddress, city, state, zipCode } = req.body;
     const record = await storage.upsertOfficeContact(userId, {
       officeName: officeName ?? undefined,
       receptionistName: receptionistName ?? undefined,
@@ -30,6 +30,10 @@ router.put("/", async (req: Request, res: Response): Promise<any> => {
       phoneNumber: phoneNumber ?? undefined,
       email: email ?? undefined,
       fax: fax ?? undefined,
+      streetAddress: streetAddress ?? undefined,
+      city: city ?? undefined,
+      state: state ?? undefined,
+      zipCode: zipCode ?? undefined,
     });
     return res.status(200).json(record);
   } catch (err) {

apps/Backend/src/routes/twilio.ts

@@ -132,13 +132,19 @@ router.post("/send-reminders-batch", async (req: Request, res: Response): Promis
       return res.status(400).json({ message: "Twilio is not configured. Please add your Twilio credentials in Settings." });
     }
 
-    // Resolve office name and reminder SMS template
+    // Resolve office name, address, and reminder SMS template
     const officeContact = await storage.getOfficeContact(userId);
     const officeName = (officeContact as any)?.officeName?.trim() || "";
+    const officeAddress = [
+      (officeContact as any)?.streetAddress?.trim(),
+      (officeContact as any)?.city?.trim(),
+      (officeContact as any)?.state?.trim(),
+      (officeContact as any)?.zipCode?.trim(),
+    ].filter(Boolean).join(", ");
     const chatTemplates = await storage.getAiChatTemplates(userId);
 
     const DEFAULT_REMINDER_SMS =
-      "Hi {firstName}, this is a reminder from {officeName}. You have an appointment on {appointmentDate} at {appointmentTime}. Please reply YES to confirm or NO to reschedule. Thank you!";
+      "Hi {firstName}, this is a reminder from {officeName}. You have an appointment on {appointmentDate} at {appointmentTime}. Please come to our office at {officeAddress}. Please reply YES to confirm or NO to reschedule. Thank you!";
     const templateBody = chatTemplates.reminderSms?.trim() || DEFAULT_REMINDER_SMS;
 
     // Fetch appointments for the selected staff columns on the given date
@@ -187,6 +193,7 @@ router.post("/send-reminders-batch", async (req: Request, res: Response): Promis
       const message = templateBody
         .replace(/\{firstName\}/g,       patient.firstName ?? "")
         .replace(/\{officeName\}/g,      officeName)
+        .replace(/\{officeAddress\}/g,   officeAddress)
         .replace(/\{appointmentDate\}/g, apptDate)
         .replace(/\{appointmentTime\}/g, apptTime)
         .replace(/\{date\}/g,            apptDate)
@@ -222,6 +229,32 @@ router.post("/send-reminders-batch", async (req: Request, res: Response): Promis
   }
 });
 
+// GET /api/twilio/sms-template-list
+router.get("/sms-template-list", async (req: Request, res: Response): Promise<any> => {
+  try {
+    const userId = req.user?.id;
+    if (!userId) return res.status(401).json({ message: "Unauthorized" });
+    const list = await storage.getSmsTemplateList(userId);
+    return res.status(200).json(list);
+  } catch (err) {
+    return res.status(500).json({ error: "Failed to fetch SMS templates", details: String(err) });
+  }
+});
+
+// PUT /api/twilio/sms-template-list
+router.put("/sms-template-list", async (req: Request, res: Response): Promise<any> => {
+  try {
+    const userId = req.user?.id;
+    if (!userId) return res.status(401).json({ message: "Unauthorized" });
+    const templates = req.body;
+    if (!Array.isArray(templates)) return res.status(400).json({ message: "Expected an array of templates" });
+    await storage.saveSmsTemplateList(userId, templates);
+    return res.status(200).json({ ok: true });
+  } catch (err) {
+    return res.status(500).json({ error: "Failed to save SMS templates", details: String(err) });
+  }
+});
+
 // GET /api/twilio/templates
 router.get("/templates", async (req: Request, res: Response): Promise<any> => {
   try {