Fix landing page to redirect to login instead of assessment

- Update all CTA buttons to link to /login instead of /assessment
- Ensure users sign in before accessing assessment
- Fix navigation flow: landing → login → assessment
- Update nav-cta, btn-primary, and btn-secondary links
- Improve user experience with proper authentication flow

templates/landing.html

@@ -13,7 +13,7 @@
     <nav class="navbar">
         <div class="nav-container">
             <div class="logo">✨ Spiritual Path</div>
-            <a href="/assessment" class="nav-cta">Start Assessment</a>
+            <a href="/login" class="nav-cta">Start Assessment</a>
         </div>
     </nav>
 
@@ -29,7 +29,7 @@
                 </p>
                 
                 <div class="cta-buttons">
-                    <a href="/assessment" class="btn-primary">
+                    <a href="/login" class="btn-primary">
                         Begin Your Assessment
                         <span class="arrow">→</span>
                     </a>
@@ -96,7 +96,7 @@
             <div class="cta-container">
                 <h2>Ready to begin your journey?</h2>
                 <p>Start your spiritual path assessment today</p>
-                <a href="/assessment" class="btn-secondary">
+                <a href="/login" class="btn-secondary">
                     Get Started Now
                     <span class="arrow">→</span>
                 </a>