Neon / portal template support (#713)

TODOs:
- [x] Do restart when checkout / restore if there is a DB
- [x] List all branches (branch id, name, date)
- [x] Allow checking out versions with no DB
- [x] safeguard to never delete main branches
- [x] create app hook for neon template
- [x] weird UX with connector on configure panel
- [x] tiny neon logo in connector
- [x] deploy to vercel
- [x] build forgot password page
- [x] what about email setup
- [x] lots of imgix errors
- [x] edit file - db snapshot
- [x] DYAD_DISABLE_DB_PUSH
- [ ] update portal doc
- [x] switch preview branch to be read-only endpoint
- [x] disable supabase sys prompt if neon is enabled
- [ ] https://payloadcms.com/docs/upload/storage-adapters
- [x] need to use main branch...

Phase 2?
- [x] generate DB migrations

src/shared/templates.ts

@@ -5,6 +5,8 @@ export interface Template {
   imageUrl: string;
   githubUrl?: string;
   isOfficial: boolean;
+  isExperimental?: boolean;
+  requiresNeon?: boolean;
 }
 
 // API Template interface from the external API
@@ -26,6 +28,9 @@ export const DEFAULT_TEMPLATE = {
   isOfficial: true,
 };
 
+const PORTAL_MINI_STORE_ID = "portal-mini-store";
+export const NEON_TEMPLATE_IDS = new Set<string>([PORTAL_MINI_STORE_ID]);
+
 export const localTemplatesData: Template[] = [
   DEFAULT_TEMPLATE,
   {
@@ -37,4 +42,15 @@ export const localTemplatesData: Template[] = [
     githubUrl: "https://github.com/dyad-sh/nextjs-template",
     isOfficial: true,
   },
+  {
+    id: PORTAL_MINI_STORE_ID,
+    title: "Portal: Mini Store Template",
+    description: "Uses Neon DB, Payload CMS, Next.js",
+    imageUrl:
+      "https://github.com/user-attachments/assets/ed86f322-40bf-4fd5-81dc-3b1d8a16e12b",
+    githubUrl: "https://github.com/dyad-sh/portal-mini-store-template",
+    isOfficial: true,
+    isExperimental: true,
+    requiresNeon: true,
+  },
 ];