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/hero.el

@@ -1,4 +1,4 @@
-// components/hero.el — Hero section.
+// components/hero.el - Hero section.
 //
 // Full-bleed hero with headline, sub-copy, and two CTAs.
 // Glow orbs are pure CSS absolute-positioned divs.
@@ -14,12 +14,12 @@ fn hero() -> String {
 
   <h1 class=\"display-xl hero-headline animate-up-2\">
     Every AI resets when you close the tab.
-    <em class=\"gold\" style=\"font-style:normal\">I built the one that doesn&#39;t &#8212; and priced it below the ones that do.</em>
+    <em class=\"gold\" style=\"font-style:normal\">I built the one that doesn&#39;t - and priced it below the ones that do.</em>
   </h1>
 
   <p class=\"hero-sub animate-up-3\">
     Runs on your machine. Remembers everything. Cheaper than ChatGPT on day one.
-    No cloud required &#8212; and when you want inference, mine costs less than theirs.
+    No cloud required - and when you want inference, mine costs less than theirs.
   </p>
 
   <div class=\"hero-ctas animate-up-5\">