feat: host member hub on main site, replace Whop community CTAs

Agent-Logs-Url: https://github.com/thefirstspark/thefirstspark.github.io/sessions/26fd543f-adaf-4c05-aa3f-1a3ceef05e8f

Co-authored-by: thefirstspark <233402159+thefirstspark@users.noreply.github.com>

Author: Copilot

index.html

@@ -715,7 +715,7 @@
         <a href="/" class="nav-logo">THE FIRST SPARK</a>
         <div class="nav-right">
             <a href="#invest" class="nav-invest">Invest</a>
-            <a href="https://whop.com/sparkverse-511c/spark-acces/" target="_blank" class="nav-cta">Join Free →</a>
+            <a href="/member-hub.html" class="nav-cta">Member Hub →</a>
         </div>
     </nav>
 
@@ -729,7 +729,7 @@ <h1 class="hero-headline">
             <p class="hero-sub">Tools, maps, and community for people who know reality is programmable. Built from lived truth — not venture capital theory.</p>
             <p class="hero-story">In 2020, I solved my mother's 1991 cold case. Her killer lived across my street. This is what I built from that fracture.</p>
             <div class="hero-ctas">
-                <a href="https://whop.com/sparkverse-511c/spark-acces/" target="_blank" class="btn-p">Join Free →</a>
+                <a href="/member-hub.html" class="btn-p">Join Free →</a>
                 <a href="https://whop.com/checkout/plan_anQKP3Pzf1cGm" target="_blank" class="btn-g">Get Your Soul Map</a>
                 <a href="https://soul-maps.thefirstspark.shop/" target="_blank" class="btn-g">See The Maps ✦</a>
             </div>
@@ -747,7 +747,7 @@ <h2 class="sec-title">Four Ways In</h2>
             <p class="sec-sub">Start wherever you are. Every path leads to the same place.</p>
 
             <div class="cards">
-                <a href="https://whop.com/sparkverse-511c/the-sparkverse-lobby/" target="_blank" class="card gold">
+                <a href="/member-hub.html" class="card gold">
                     <div class="card-icon">◈</div>
                     <div class="card-name">Community</div>
                     <div class="card-desc">Tools, rituals, ebooks, oracle pulls, and monthly drops. Free to start. Upgrade when you're ready.</div>
@@ -948,7 +948,7 @@ <h2 class="sec-title">Built From Rock Bottom</h2>
         <div class="wrap">
             <a href="/" class="footer-logo">THE FIRST SPARK</a>
             <div class="footer-links">
-                <a href="https://whop.com/sparkverse-511c/the-sparkverse-lobby/" target="_blank">Community</a>
+                <a href="/member-hub.html">Community</a>
                 <a href="https://soul-maps.thefirstspark.shop" target="_blank">Soul Maps</a>
                 <a href="https://sparkverse.thefirstspark.shop" target="_blank">Live Prototype</a>
                 <a href="https://thefirstspark.shop/investor-deck-v2.html" target="_blank">Invest</a>