Add screenshots and news pages

website/src/news/index.njk

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+---
+layout: base.njk
+title: KST4Contest News
+description: News, release updates and development notes for KST4Contest.
+---
+
+<section class="hero">
+  <h1>News</h1>
+  <p>
+    Release notes, development updates and contest workflow improvements.
+  </p>
+</section>
+
+<section class="section">
+  <div class="card">
+    <h2>Website launch</h2>
+    <p>
+      The new KST4Contest website is being built as a static, SEO-friendly product site
+      with GitHub-based documentation and automated deployment.
+    </p>
+  </div>
+</section>

website/src/screenshots/index.njk

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+---
+layout: base.njk
+title: KST4Contest Screenshots
+description: Screenshots of KST4Contest, the contest-optimized ON4KST chat client for VHF, UHF and SHF operators.
+---
+
+<section class="hero">
+  <h1>Screenshots</h1>
+  <p>
+    Visual impressions of KST4Contest: ON4KST chat workflow, priority candidates,
+    sked handling, AirScout integration and contest-focused operator tools.
+  </p>
+</section>
+
+<section class="section">
+  <div class="grid">
+    <div class="card">
+      <h3>Main Window</h3>
+      <p>ON4KST chat workflow with contest-oriented controls.</p>
+    </div>
+
+    <div class="card">
+      <h3>Priority Candidates</h3>
+      <p>Candidate ranking for faster operator decisions.</p>
+    </div>
+
+    <div class="card">
+      <h3>AirScout / AP Timeline</h3>
+      <p>Aircraft scatter timing support for VHF/UHF/SHF operation.</p>
+    </div>
+  </div>
+</section>