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/page.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Generic page template
+ */
+get_header();
+the_post();
+?>
+
+<div class="rar-breadcrumb">
+    <a href="<?php echo esc_url(home_url('/')); ?>">Home</a> / <span><?php the_title(); ?></span>
+</div>
+
+<div style="max-width:900px;margin:0 auto;padding:64px 56px;">
+    <div class="rar-form-tag" style="margin-bottom:16px;">PAGE · <?php echo esc_html(strtoupper(get_the_date('M j, Y'))); ?></div>
+    <h1 style="font-family:var(--serif);font-size:52px;font-weight:500;line-height:1.0;margin:0 0 40px;letter-spacing:-0.025em;"><?php the_title(); ?></h1>
+    <div style="font-size:16px;line-height:1.7;color:var(--ink-soft);">
+        <?php the_content(); ?>
+    </div>
+</div>
+
+<?php get_footer(); ?>