Add email signup forms to main page and newsletter page

- Added one-liner signup form to main page with streamlined design
- Added full signup form to newsletter index page
- Updated form action URL to use production listmonk instance
- Forms include SafeAI-Aus list subscription with descriptive text

Author: agent-ptolemy

docs/index.md

@@ -28,6 +28,18 @@ We help Australian businesses adopt AI responsibly, safely, and in compliance wi
 ## Our Mission
 To enable safe, ethical, and growth-oriented AI adoption in Australian businesses through open standards, practical tools, and collaborative knowledge-sharing.
 
+## Stay Updated
+Subscribe today for practical tools to make AI safe — and work for your growth.
+
+<form method="post" action="https://lists.safeaiaus.org/subscription/form" class="listmonk-form" style="margin: 20px 0;">
+  <div style="display: flex; gap: 10px; align-items: center; flex-wrap: wrap;">
+    <input type="hidden" name="nonce" />
+    <input type="email" name="email" required placeholder="Enter your email" style="flex: 1; min-width: 200px; padding: 8px; border: 1px solid #ccc; border-radius: 4px;" />
+    <input type="hidden" name="l" value="48a923d4-0865-49f1-9c94-67a234cbcae3" />
+    <input type="submit" value="Subscribe" style="padding: 8px 16px; background-color: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer;" />
+  </div>
+</form>
+
 ## What You'll Find Here
 - **Guidelines** — Best practices aligned with the Australian Voluntary AI Safety Standard.
 - **Governance Templates** — AI use policies, risk assessments, incident forms, vendor evaluation tools, and readiness checklists.

docs/newsletter/0_newsletter_index.md

@@ -1,3 +1,28 @@
+# Subscribe to Our Newsletter
+
+Stay informed with news, resources, and practical tools on safe and responsible AI adoption in Australia.
+
+<form method="post" action="http://localhost:9000/subscription/form" class="listmonk-form">
+  <div>
+    <h3>Subscribe</h3>
+    <input type="hidden" name="nonce" />
+
+    <p><input type="email" name="email" required placeholder="E-mail" /></p>
+    <p><input type="text" name="name" placeholder="Name (optional)" /></p>
+
+    <p>
+      <input id="48a92" type="checkbox" name="l" checked value="48a923d4-0865-49f1-9c94-67a234cbcae3" />
+      <label for="48a92">SafeAI-Aus</label>
+      <br />
+      <span>Stay informed with news, resources, and practical tools on safe and responsible AI adoption in Australia. We'll share templates, governance guides, workshop materials, and research highlights curated by the SafeAI-Aus project. Expect occasional updates (not spam), focused on helping Australian businesses and organisations adopt AI safely, ethically, and effectively for growth.</span>
+    </p>
+
+    <input type="submit" value="Subscribe " />
+  </div>
+</form>
+
+---
+
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