Add weapon library dropdown and restyle UI

templates/about_us.html

@@ -34,8 +34,8 @@
         <div class="af-card-header">
             <h1>About the Anomaly Front toolkit</h1>
             <p>
-                This site is the staging ground for an unreleased experience. We are rebuilding every tool from the
-                ground up to avoid legacy stats, old branding, or outdated data.
+                This site is the staging ground for the toolkit. We are rebuilding every tool from the ground up to
+                avoid legacy stats, old branding, or outdated data.
             </p>
         </div>
         <div class="af-copy-grid">
@@ -43,7 +43,7 @@
                 <h2>Purpose</h2>
                 <p>
                     Provide a shared workspace for balancing weapons, capturing loadout notes, and testing combat pacing
-                    long before the official numbers land.
+                    as the library grows.
                 </p>
             </div>
             <div>
@@ -79,8 +79,8 @@
             <div class="af-card-header">
                 <h2>Release posture</h2>
                 <p>
-                    Anomaly Front is unreleased. Everything shown here is a placeholder designed to help us think
-                    through combat pacing before the official data arrives.
+                    Everything shown here is a placeholder designed to help us think through combat pacing while the
+                    data set is still evolving.
                 </p>
             </div>
         </div>