Em dash removal, nav/form/terms updates

- Replace all em dashes with hyphens site-wide (22 files)
- Add Safety to nav
- Remove Express Interest button from enterprise header (form is the path now)
- Enterprise form: secondary headcount selection shows honest odds message; yes disables submit button
- Terms §5: add network layer indemnification (patent pending 64/036,821); no proprietary names
- Terms §4: Neuron Inference is live now, not Q3 2026

src/comparison.el

@@ -1,4 +1,4 @@
-// components/comparison.el — Neuron vs the field comparison section.
+// components/comparison.el - Neuron vs the field comparison section.
 
 fn comparison() -> String {
     return "
@@ -130,7 +130,7 @@ fn comparison() -> String {
         The others are impressive. Some of them are extraordinary at what they do. But they are all built on the same assumption: <em>your context lives in their cloud, session to session, at their discretion.</em>
       </p>
       <p style=\"font-family:var(--body);font-weight:300;font-size:1rem;color:var(--t2);line-height:1.8\">
-        Neuron starts from a different premise. Your memory is yours. It lives on your machine. It compounds over time, not over sessions. The AI that knows you isn&#39;t an AI you borrowed from someone else&#39;s cloud &#8212; it&#39;s one that has been building with you, on your terms, since day one.
+        Neuron starts from a different premise. Your memory is yours. It lives on your machine. It compounds over time, not over sessions. The AI that knows you isn&#39;t an AI you borrowed from someone else&#39;s cloud - it&#39;s one that has been building with you, on your terms, since day one.
       </p>
     </div>