SEO: add Keep reading links between blog posts, plus manual and plugin links

blog/what-a-will-executor-can-see.html

@@ -299,6 +299,16 @@ footer .built{font-size:13px;color:var(--muted);margin-top:8px}
 <p>Compare that with the alternative: a folder in a lawyer's cabinet containing your name, your family's names, and the full list of what you own.</p>
 <p>Inheritance used to require giving up your privacy to be safe. We built BAL so you could keep both.</p>
 
+<aside class="related">
+<h2>Keep reading</h2>
+<ul style="padding-left:22px">
+<li><a href="run-a-will-executor.html">Run a Will-Executor: Earn Bitcoin Fees by Powering Decentralized Inheritance</a></li>
+<li><a href="proof-of-life.html">Proof of Life Without Surveillance: How Your Wallet Tells the Protocol You're Still Here</a></li>
+<li><a href="liquid-network-and-why-we-trust-only-bedrock.html">Liquid Network's $320M Lesson: Why BAL Only Builds on Bedrock</a></li>
+</ul>
+<p>New to Bitcoin After Life? Read the <a href="https://bitcoin-after.life/docs/">user manual</a> or <a href="../index.html#plugin">get the Electrum plugin</a>.</p>
+</aside>
+
 <p><em>Want the technical detail? The full protocol walkthrough is in the <a href="https://bitcoin-after.life/docs/protocol/how-it-works.html" target="_blank" rel="noopener">manual</a>, and both the <a href="https://bitcoin-after.life/gitea/bitcoinafterlife/bal-electrum-plugin" target="_blank" rel="noopener">plugin</a> and the <a href="https://bitcoin-after.life/gitea/bitcoinafterlife/bal-server" target="_blank" rel="noopener">server</a> are open source — verify, don't trust.</em></p>
 </article>