Add RAR Storefront WordPress theme

Implements the Reply All Regrets™ frontend design: retro office aesthetic
with manila/ink/stamp-red/olive palette, Fraunces + JetBrains Mono + Inter
typography. Includes homepage, category, product detail, blog, about, cart
templates with WooCommerce integration and interactive JS (filter, sort, gallery).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

theme/index.php

@@ -0,0 +1,24 @@
+<?php get_header(); ?>
+
+<div style="padding:64px 56px;">
+    <?php if (have_posts()) : ?>
+        <div class="rar-blog-archive">
+            <?php while (have_posts()) : the_post(); ?>
+                <a href="<?php the_permalink(); ?>" class="rar-blog-card">
+                    <?php if (has_post_thumbnail()) : ?>
+                        <div class="rar-blog-thumb"><?php the_post_thumbnail('rar-blog-thumb'); ?></div>
+                    <?php else : ?>
+                        <div class="rar-blog-thumb"></div>
+                    <?php endif; ?>
+                    <div class="rar-post-meta"><?php the_category(' · '); ?> · <?php the_date('M j, Y'); ?></div>
+                    <div class="rar-post-title"><?php the_title(); ?></div>
+                </a>
+            <?php endwhile; ?>
+        </div>
+        <?php the_posts_pagination(); ?>
+    <?php else : ?>
+        <p style="font-family:var(--serif);font-size:24px;">Nothing filed yet. Check back later.</p>
+    <?php endif; ?>
+</div>
+
+<?php get_footer(); ?>