chore(main): release 1.0.0

[github-actions]

🤖 I have created a release beep boop

1.0.0 (2026-07-03)

⚠ BREAKING CHANGES

• JustBash.Fs and JustBash.Fs.InMemoryFs are replaced by JustBash.FS / JustBash.FS.Memory with vfs-shaped returns ({:ok, payload, fs} on reads, %VFS.Error{} on failure, %VFS.Stat{} from stat). Bash-level script behavior is unchanged.

Features

• add JustBash.CLI for namespaced subcommand tools (#39) (2761adf)
• add put_context/3 and get_context/3 accessors (#41) (2c6e6b7)
• cli: address consumer feedback from issue #38 (#43) (7d84244)
• replace the filesystem layer with the vfs library (#44) (1da1db8)

Bug Fixes

• mkdir and rm report backend errors instead of crashing the exec (#48) (dffd5dd)
• printf %b support and no-progress guard against format-recycle hangs (#50) (56c74b8)

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