feat: improve LMS course discovery and enrollment UX

- Add paginated recommended courses to LMS dashboard (top 3, list
    view)
    and explore page (12 per page); exclude courses blocking new
    students
  - Polish course preview modal: remove padding, render requirements as
    HTML, round banner image, secondary close button
  - Redirect to course start page after successful enrollment instead of
    /lms;
    keep spinner active until navigation completes
  - Auto-enable "allow new students" when a course is published
  - Move Explore after My Learning in LMS sidebar nav
  - Move Certificates after Content in course sidebar
  - Add hiddenColumns prop to CourseListRow; show "Learn more" button
    instead of actions menu in LMS explore context

apps/api/src/routes/organization/organization.ts

@@ -442,15 +442,19 @@ export const organizationRouter = new Hono()
     async (c) => {
       try {
         const user = c.get('user')!;
-        const { limit } = c.req.valid('query');
+        const { limit, page = 1 } = c.req.valid('query');
 
         const orgId = c.req.header('cio-org-id')!;
-        const result = await getRecommendedCourses(orgId, user.id, limit);
+        const { data, total } = await getRecommendedCourses(orgId, user.id, limit, page);
+
+        const resolvedLimit = limit ?? total;
+        const totalPages = resolvedLimit > 0 ? Math.ceil(total / resolvedLimit) : 1;
 
         return c.json(
           {
             success: true,
-            data: result
+            data,
+            pagination: { page, limit: resolvedLimit, total, totalPages }
           },
           200
         );