Remove placeholders and finalize contact details for launch

- Replace all `[PLACEHOLDER]` entries across legal pages with actual values
- Update privacy policy with ICO registration status and service provider details (Ionos, Vonage, OneSignal)
- Finalize contact email as `hello@fuel-alert.co.uk` throughout legal pages and footer
- Update legal layout to use full landing nav with auth/guest actions
- Add Umami analytics script to main app layout
- Remove "Fleet" nav link from landing navigation
- Add feature test to enforce no placeholders and correct contact domain remain in legal pages

resources/views/legal/terms.blade.php

@@ -69,8 +69,9 @@
             You may cancel before the change takes effect.
         </p>
         <p>
-            <strong>VAT.</strong> Prices include UK VAT where applicable.
-            <strong>[PLACEHOLDER: verify before launch &mdash; FuelAlert is currently below the UK VAT registration threshold and therefore does not charge VAT.]</strong>
+            <strong>VAT.</strong> FuelAlert is currently below the UK VAT registration threshold and is
+            not VAT-registered, so no VAT is charged on your subscription. The price shown is the total
+            amount you pay.
         </p>
     </section>
 
@@ -215,7 +216,7 @@
         <h2 class="font-display text-2xl font-bold text-zinc-900">15. Contact</h2>
         <p>
             For questions about these terms, email
-            <a href="mailto:[PLACEHOLDER: hello@fuelalert.co.uk]" class="text-accent underline">[PLACEHOLDER: hello@fuelalert.co.uk]</a>.
+            <a href="mailto:hello@fuel-alert.co.uk" class="text-accent underline">hello@fuel-alert.co.uk</a>.
         </p>
     </section>
 </x-layouts.legal>