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/checkout.el

@@ -1,14 +1,14 @@
-// checkout.el — Integrated Stripe checkout page.
+// checkout.el - Integrated Stripe checkout page.
 //
 // Uses Stripe Payment Element (not hosted checkout) so the entire
 // purchase experience lives on neurontechnologies.ai. The page is
-// designed to match the Neuron brand — navy, clean, no Stripe chrome.
+// designed to match the Neuron brand - navy, clean, no Stripe chrome.
 //
 // Flow:
 //   1. GET /checkout?plan=founding|professional
 //   2. Page JS calls POST /api/payment-intent → { client_secret, publishable_key, plan }
 //   3. Stripe Payment Element mounts into #payment-element
-//   4. User fills name, email, card — submits
+//   4. User fills name, email, card - submits
 //   5. stripe.confirmPayment() → redirects to /marketplace/success
 
 fn checkout_page(plan: String, pub_key: String) -> String {
@@ -19,22 +19,22 @@ fn checkout_page(plan: String, pub_key: String) -> String {
     let plan_desc: String = if is_founding {
         "Pay once. Neuron inference forever. No subscription, ever."
     } else {
-        "Full access. Neuron inference — cheaper than what you're paying now."
+        "Full access. Neuron inference - cheaper than what you're paying now."
     }
     let plan_cadence: String = if is_founding { "one-time" } else { "billed monthly" }
 
     let features_html: String = if is_founding {
-        "<li>Neuron inference &#8212; priced below competitors, forever</li>
-         <li>Everything in Professional &#8212; forever</li>
-         <li>Never pay again &#8212; lifetime updates included</li>
+        "<li>Neuron inference - priced below competitors, forever</li>
+         <li>Everything in Professional - forever</li>
+         <li>Never pay again - lifetime updates included</li>
          <li>Founding member badge in the app</li>
-         <li>Private community &#8212; direct line to the team</li>
-         <li>Shape the roadmap &#8212; your votes carry more weight</li>
+         <li>Private community - direct line to the team</li>
+         <li>Shape the roadmap - your votes carry more weight</li>
          <li>Beta features before general release</li>
          <li>Name in the credits</li>"
     } else {
-        "<li>Neuron inference &#8212; metered, priced below OpenAI and Anthropic</li>
-         <li>Persistent memory &#8212; never resets</li>
+        "<li>Neuron inference - metered, priced below OpenAI and Anthropic</li>
+         <li>Persistent memory - never resets</li>
          <li>Unlimited projects</li>
          <li>Full plugin marketplace</li>
          <li>IDE, Slack, and more integrations</li>