Move Server Actions to static paths to fix RSC temporary client reference error

Server Actions imported from dynamic route paths ([courseId]/[moduleId]/[lessonId])
caused "Cannot access toStringTag on the server" crash after saving a lesson.
Moved saveLesson, saveHomework, deleteHomework to src/lib/actions/*.ts.

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

src/lib/actions/homework-actions.ts

@@ -0,0 +1,27 @@
+"use server";
+
+import { prisma } from "@/lib/prisma";
+import { auth } from "@/lib/auth";
+import { headers } from "next/headers";
+import { revalidatePath } from "next/cache";
+
+async function requireAdmin() {
+  const session = await auth.api.getSession({ headers: await headers() });
+  if (!session || session.user.role !== "admin") throw new Error("Forbidden");
+}
+
+export async function saveHomework(lessonId: string, description: string) {
+  await requireAdmin();
+  await prisma.homework.upsert({
+    where: { lessonId },
+    update: { description },
+    create: { lessonId, description },
+  });
+  revalidatePath(`/admin/courses`);
+}
+
+export async function deleteHomework(lessonId: string) {
+  await requireAdmin();
+  await prisma.homework.delete({ where: { lessonId } });
+  revalidatePath(`/admin/courses`);
+}

src/lib/actions/lesson-actions.ts

@@ -0,0 +1,36 @@
+"use server";
+
+import { prisma } from "@/lib/prisma";
+import { headers } from "next/headers";
+import { auth } from "@/lib/auth";
+import { revalidatePath } from "next/cache";
+
+async function requireAdmin() {
+  const session = await auth.api.getSession({ headers: await headers() });
+  if (!session || session.user.role !== "admin") throw new Error("Forbidden");
+}
+
+export async function saveLesson(
+  lessonId: string,
+  courseId: string,
+  moduleId: string,
+  data: {
+    title: string;
+    kinescopeId: string;
+    content: object;
+    published: boolean;
+  }
+) {
+  await requireAdmin();
+  await prisma.lesson.update({
+    where: { id: lessonId },
+    data: {
+      title: data.title,
+      kinescopeId: data.kinescopeId || null,
+      content: data.content,
+      published: data.published,
+    },
+  });
+  revalidatePath(`/admin/courses/${courseId}/modules/${moduleId}`);
+  revalidatePath(`/admin/courses/${courseId}/modules/${moduleId}/lessons/${lessonId}`);
+}