Bump version to v2026.9.8.2

Same-day patch release: RDP TLS certificate verification fix and
Flathub submission prep.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

packaging/linux/org.darksingularity.OrbitHub.metainfo.xml

@@ -34,6 +34,12 @@
     </screenshot>
   </screenshots>
   <releases>
+    <release version="2026.9.8.2" date="2026-09-08">
+      <url>https://git.darksingularity.org/DarkSingularity/orbithub/releases/tag/v2026.9.8.2</url>
+      <description>
+        <p>Fixes RDP connections silently accepting any server TLS certificate, including changed ones. Certificates are now verified with trust-on-first-use, matching SSH's known-hosts behavior.</p>
+      </description>
+    </release>
     <release version="2026.9.8" date="2026-09-08">
       <url>https://git.darksingularity.org/DarkSingularity/orbithub/releases/tag/v2026.9.8</url>
     </release>