feat(dashboard): add view course site actions and publish flow (#690)

Add View course site and Publish course options to org course context menus.
Replace the course header View as student button with View Course Site and
a companion overflow menu that includes View as student plus list actions.
Show a publish prompt modal for unpublished courses and support #publish
deep links in course settings.

apps/dashboard/src/lib/features/course/components/view-course-site-unpublished-modal.svelte

@@ -0,0 +1,66 @@
+<script lang="ts">
+  import { Button } from '@cio/ui/base/button';
+  import * as Dialog from '@cio/ui/base/dialog';
+  import { courseApi } from '$features/course/api';
+  import { publishCourse } from '$features/course/utils/publish-course';
+  import { openCoursePreview } from '$features/course/utils/course-preview';
+  import { t } from '$lib/utils/functions/translations';
+
+  interface Props {
+    open?: boolean;
+    currentOrgDomain?: string;
+  }
+
+  let { open = $bindable(false), currentOrgDomain = '' }: Props = $props();
+
+  let isPublishing = $state(false);
+
+  async function handlePublishCourse() {
+    const course = courseApi.course;
+    if (!course?.id) {
+      return;
+    }
+
+    isPublishing = true;
+
+    const published = await publishCourse(course);
+    isPublishing = false;
+
+    if (!published) {
+      return;
+    }
+
+    open = false;
+
+    openCoursePreview({
+      courseId: course.id,
+      courseSlug: courseApi.course?.slug,
+      currentOrgDomain
+    });
+  }
+</script>
+
+<Dialog.Root
+  bind:open
+  onOpenChange={(isOpen) => {
+    if (!isOpen && !isPublishing) {
+      open = false;
+    }
+  }}
+>
+  <Dialog.Content class="w-[calc(100%-2rem)] max-w-md! p-4">
+    <Dialog.Header>
+      <Dialog.Title>{$t('course.view_course_site.unpublished_title')}</Dialog.Title>
+      <Dialog.Description>{$t('course.view_course_site.unpublished_description')}</Dialog.Description>
+    </Dialog.Header>
+
+    <Dialog.Footer>
+      <Button variant="outline" onclick={() => (open = false)} disabled={isPublishing}>
+        {$t('course.view_course_site.cancel')}
+      </Button>
+      <Button variant="default" onclick={handlePublishCourse} loading={isPublishing} disabled={!courseApi.course?.id}>
+        {$t('course.view_course_site.publish_course')}
+      </Button>
+    </Dialog.Footer>
+  </Dialog.Content>
+</Dialog.Root>