Align backend plan with codebase

app/api/templates/route.ts

@@ -0,0 +1,28 @@
+import { NextResponse } from "next/server";
+import { prisma } from "../../../lib/server/db";
+import { isDatabaseConfigured } from "../../../lib/server/env";
+import { dbUnavailable } from "../../../lib/server/responses";
+
+/**
+ * Curated rule templates for recommendations (seed via Prisma Studio or a script).
+ */
+export async function GET() {
+  if (!isDatabaseConfigured()) {
+    return dbUnavailable();
+  }
+
+  const templates = await prisma.ruleTemplate.findMany({
+    orderBy: [{ featured: "desc" }, { sortOrder: "asc" }, { title: "asc" }],
+    select: {
+      id: true,
+      slug: true,
+      title: true,
+      category: true,
+      description: true,
+      body: true,
+      featured: true,
+    },
+  });
+
+  return NextResponse.json({ templates });
+}