feat(resume): add ResumePreview container component (Story 2-2)

- Create app/components/resume/ResumePreview.vue with single-column layout
- Implement A4 container (210mm × 297mm) with 24px margins
- Add all resume sections: Header, Summary, Experience, Education, Additional Info
- Apply blue (#2563eb) and white color scheme with Inter typography
- Add print styles with .no-print class and break-inside-avoid
- Integrate useResumeData() composable for reactive data
- Update pages/resume.vue to use ResumePreview component

Closes Story 2-2

app/pages/resume.vue

@@ -15,18 +15,9 @@ useHead({
 </script>
 
 <template>
-  <div class="min-h-screen bg-white">
-    <!-- Placeholder for ResumePreview component (Story 2.2) -->
-    <div class="p-8 text-center">
-      <h1 class="text-2xl font-bold">Resume Preview Coming Soon</h1>
-      <p class="mt-4 text-gray-600">
-        This page will display the resume preview once Story 2.2 is complete.
-      </p>
-      <p v-if="isPrintMode" class="mt-2 text-sm text-blue-600">
-        Print Mode: Active
-      </p>
-    </div>
-    
+  <div class="min-h-screen">
+    <ResumePreview />
+
     <!-- Download button will be added in Story 2.5 -->
     <!-- Hidden when isPrintMode is true -->
   </div>