fix(k3s): update Flux node selectors, remove clawjp host, and adjust Gitea runner/Docker tag settings

flux/flux-instance.yaml

@@ -47,7 +47,7 @@ spec:
                         - key: kubernetes.io/hostname
                           operator: In
                           values:
-                            - clawjp
+                            - tchk
       - target:
           kind: Deployment
           name: (helm-controller|kustomize-controller|notification-controller)