docs(website): refresh site copy and update changelog descriptions

src/pages/changelog.astro

@@ -11,10 +11,10 @@ import BaseLayout from '../layouts/BaseLayout.astro';
           <div class="hero-label">// CHANGELOG.md</div>
           <h1 class="hero-title">
             <span class="title-line-1">CHANGELOG</span>
-            <span class="title-accent">RELEASE_HISTORY_</span>
+            <span class="title-accent">RELEASE HISTORY & BUILD NOTES</span>
           </h1>
           <p class="hero-description">
-            Track the evolution of Zaguán Blade. See what's new, what's fixed, and what's coming.
+            Honest release history built by humans who curse at compiler errors like everyone else.
           </p>
         </div>
       </div>
@@ -34,7 +34,7 @@ import BaseLayout from '../layouts/BaseLayout.astro';
           
           <div class="version-content">
             <div class="version-resume">
-              <p>Development builds focused on major UI optimization including a rebuilt Chat Panel and CodeMirror editor, extensive codebase refactoring, and smoother scrolling across the board.</p>
+              <p>Mostly UI polish in this release: a rebuilt chat panel that actually feels snappy, tighter editor scrolling so you won't curse at your mouse wheel anymore, fix for the Alt+TAB window title display bug that was driving users insane, and CSS cleanup that didn't make things look like a 2010-era IDE:</p>
             </div>
             <div class="changes-section">
               <h3 class="changes-title">
@@ -91,7 +91,7 @@ import BaseLayout from '../layouts/BaseLayout.astro';
           
            <div class="version-content">
             <div class="version-resume">
-              <p>Development builds focused on new model integration, stability improvements, and Zaguán Coder Daemon enhancements.</p>
+              <p>Stability updates, new model previews, and some much-needed fixes that kept getting ignored or put on the back burner. The API key management bugs that were causing chaos finally squashed, and the diff review workflow got a long-overdue polish treatment.</p>
             </div>
             <div class="changes-section">
               <h3 class="changes-title">