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/how_it_works.el

@@ -1,4 +1,4 @@
-// components/how_it_works.el — "Three moments. Permanent context." steps.
+// components/how_it_works.el - "Three moments. Permanent context." steps.
 
 fn how_it_works() -> String {
     return "
@@ -43,7 +43,7 @@ fn how_it_works() -> String {
           <span class=\"step-aside\">Every session</span>
         </div>
         <h3 class=\"display-md step-title\">Never start over</h3>
-        <p class=\"step-body\">Open a new session days or months later. Neuron remembers. Every project, every decision, every thread &#8212; exactly where you left it.</p>
+        <p class=\"step-body\">Open a new session days or months later. Neuron remembers. Every project, every decision, every thread - exactly where you left it.</p>
       </div>
 
     </div>