The TeleportFling repo moved from homeserver:3050 to gitea.edley.me.
Update the flake input URL; fetching uses the user netrc (nix.conf
netrc-file) with the gitea access token.
push-all now cherry-picks new main commits onto the gitea-sync branch on top
of the clean baseline, so history is visible on gitea from this point forward
while the pre-existing history stays hidden.