Implement Phase 9 & reusable components; skip Phase 8 (emails)

Phase 8 (Emails) skipped: WooCommerce email rendering uses
wc_get_template_html() which bypasses the Twig pipeline entirely.
Email customization deferred to plugins or block email editor.

Phase 9 - Supplementary (7 templates):
- Brand description with thumbnail, taxonomy archive delegate
- Brands A-Z shortcode with alphabetical index navigation
- Single brand thumbnail shortcode
- REST API OAuth login and grant-access forms
- Back-in-stock notification form with email input

Reusable Components (6 templates):
- price: product price display with sale handling
- rating: star rating with Bootstrap Icons (filled/half/empty)
- address-card: billing/shipping address card with edit link
- status-badge: contextual order status badges
- quantity-input: +/- input group widget
- form-field: universal form field renderer (text/select/textarea/checkbox)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/brands/taxonomy-product_brand.html.twig

@@ -0,0 +1,12 @@
+{#
+ # Brand Taxonomy Archive (Bootstrap 5 Override)
+ #
+ # Delegates to the standard archive-product template.
+ #
+ # WooCommerce PHP equivalent: brands/taxonomy-product_brand.php
+ #
+ # @package WcBootstrap
+ # @since 0.1.0
+ #}
+
+{% include 'archive-product.html.twig' %}