feat(content): Our Methodology page template + footer link (v2.1.6)

- Add page-our-methodology.php — two-column ToC template for /our-methodology/
  Mirrors page-how-we-review.php; CSS classes use page-our-methodology prefix
  #last-verified anchor is deep-link target for Phase 2 verdict-card lines
- Footer section 5: add Our Methodology link between How We Review + Editorial Standards
- Bump version to 2.1.6

page-our-methodology.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * Template Name: Our Methodology
+ *
+ * Two-column layout with sticky sidebar ToC for the editorial methodology page.
+ * Mirrors page-how-we-review.php layout; CSS classes use page-our-methodology prefix.
+ *
+ * @package peptide-starter
+ */
+
+get_header();
+?>
+
+<main id="main" class="site-main">
+	<div class="page-our-methodology">
+		<div class="page-our-methodology__content">
+			<?php
+			while ( have_posts() ) {
+				the_post();
+				?>
+				<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
+					<header class="entry-header">
+						<h1 class="entry-title"><?php the_title(); ?></h1>
+					</header>
+					<div class="entry-content">
+						<?php the_content(); ?>
+					</div>
+				</article>
+				<?php
+			}
+			?>
+		</div>
+
+		<?php if ( ! empty( get_the_content() ) ) : ?>
+			<aside class="page-our-methodology__sidebar">
+				<nav class="page-toc" aria-label="<?php esc_attr_e( 'Page contents', 'peptide-starter' ); ?>">
+					<h3><?php esc_html_e( 'Contents', 'peptide-starter' ); ?></h3>
+					<!-- JavaScript-generated ToC will be inserted here -->
+				</nav>
+			</aside>
+		<?php endif; ?>
+	</div>
+</main>
+
+<?php
+get_footer();