feature create lesson page: scaffold route /admin/courses/[courseId]/lesson/create

Author: asiansnoodle

src/app/admin/courses/[courseId]/lesson/create/page.tsx

@@ -0,0 +1,23 @@
+import React from "react";
+
+export default function CreateLessonPage({
+  params,
+}: {
+  params: { courseId: string };
+}) {
+  return (
+    <div className="mx-auto w-full max-w-3xl space-y-6">
+      <header>
+        <h1 className="text-2xl font-semibold">Create Lesson</h1>
+        <p className="text-sm text-neutral-500">
+          Course ID: <span className="font-mono">{params.courseId}</span>
+        </p>
+      </header>
+
+      {/* Step 2 will replace this with the real form */}
+      <div className="rounded-lg border bg-white p-6 text-sm text-neutral-600 dark:border-neutral-800 dark:bg-neutral-900 dark:text-neutral-300">
+        Form coming next: title, description, unit dropdown, “Create Unit” modal.
+      </div>
+    </div>
+  );
+}