Fix landing 500 from invalid Asia/Esfahan timezone.

Normalize Iran city aliases to Asia/Tehran, harden the clock, and make settings timezone a safe select.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/content/content.service.ts

@@ -1,4 +1,5 @@
 import { Injectable, NotFoundException } from "@nestjs/common";
+import { resolveTimezone } from "@montech/shared";
 import { PrismaService } from "../prisma/prisma.service";
 
 @Injectable()
@@ -19,11 +20,12 @@ export class ContentService {
     socials?: object;
     logoUrl?: string | null;
   }) {
-    const { logoUrl, ...rest } = data;
+    const { logoUrl, timezone, ...rest } = data;
     return this.prisma.siteSettings.update({
       where: { id: "default" },
       data: {
         ...rest,
+        ...(timezone !== undefined ? { timezone: resolveTimezone(timezone) } : {}),
         ...(logoUrl !== undefined ? { logoUrl: logoUrl || null } : {}),
       },
     });
@@ -48,11 +50,22 @@ export class ContentService {
   }
 
   async getPublicSite() {
-    const [settings, sections, pages] = await Promise.all([
+    const [settingsRaw, sections, pages] = await Promise.all([
       this.getSettings(),
       this.listSections(),
       this.prisma.page.findMany({ include: { seo: true } }),
     ]);
+    const settings = {
+      ...settingsRaw,
+      timezone: resolveTimezone(settingsRaw.timezone),
+    };
+    // heal invalid timezone stored in DB (e.g. Asia/Esfahan)
+    if (settingsRaw.timezone !== settings.timezone) {
+      await this.prisma.siteSettings.update({
+        where: { id: "default" },
+        data: { timezone: settings.timezone },
+      });
+    }
     const sectionMap: Record<string, unknown> = {};
     for (const s of sections) sectionMap[s.key] = s.data;
     return { settings, sections: sectionMap, pages };