New tools/gitea/client-access.md: the credential file (~/.config/secrets/gitea,
0600) behind a global 'store --file' helper, the git 2.56 credential-store trap
(the key=value block shape parses to an empty get; the file must be one
http://user:token@host:port URL per line), the GIT_TERMINAL_PROMPT=0
verification loop, the lfs.locksverify key that silences the URL echo, and the
rotation procedure. Cross-linked from the gitea index and management pages.
Both workstation remotes are now bare URLs; the token lives in one file.