docs+manifest: hub v0.49.0 — Edit tab merge train (CHANGELOG, REUSE rows, CONTEXT, GitOps bump)

Version note: the task spec targeted 0.48.0 but that tag had already shipped
(app_start_failed); published tags are never re-pointed → this train is 0.49.0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TZc5w5jDhFLv6qDC32KN5v

manifests/hub.yaml

@@ -126,7 +126,7 @@ spec:
     spec:
       containers:
         - name: hub
-          image: gitea.dooplex.hu/admin/felhom-hub:0.48.0
+          image: gitea.dooplex.hu/admin/felhom-hub:0.49.0
           ports:
             - containerPort: 8080
               name: http