feat(site): QR codes for F-Droid repo + APK install (source)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs-site/index.html

@@ -288,11 +288,19 @@ footer a{margin:0 8px}
     <h3>Option A — F-Droid (recommended)</h3>
     <p>Add this repository in any F-Droid client (F-Droid, Droid-ify, Neo Store), then install OpenCode Mobile and get automatic updates:</p>
     <pre><code>https://dzianisv.github.io/opencode-mobile/fdroid/repo</code></pre>
-    <p class="muted">In F-Droid: Settings &rarr; Repositories &rarr; add the URL above, then search for "OpenCode Mobile".</p>
+    <p class="muted">In F-Droid: Settings &rarr; Repositories &rarr; add the URL above (or scan the QR code in the client's "Add repository" screen), then search for "OpenCode Mobile". Your client will ask you to confirm the repo on first connect.</p>
+    <p style="text-align:center;margin:20px 0">
+      <img src="fdroid-qr.png" alt="QR code to add the OpenCode Mobile F-Droid repository" width="180" height="180" style="background:#fff;padding:10px;border-radius:12px" loading="lazy" />
+      <br><span class="muted">Scan to add the F-Droid repo</span>
+    </p>
 
     <h3>Option B — Direct APK</h3>
     <p>Download the latest signed APK and install it (you may need to allow installation from unknown sources):</p>
     <p><a class="btn btn-primary" href="https://github.com/dzianisv/opencode-mobile/releases/latest">Download latest APK</a></p>
+    <p style="text-align:center;margin:20px 0">
+      <img src="apk-qr.png" alt="QR code to download the OpenCode Mobile APK" width="180" height="180" style="background:#fff;padding:10px;border-radius:12px" loading="lazy" />
+      <br><span class="muted">Scan to download the APK on your phone</span>
+    </p>
   </div>
 </section>