BEFORE | Linux CLI | Node v26.13.1
Commit: c2e54e3ac9c8c0d5ceaf7df5acd4f4374fa19b6f
Fresh isolated state; synthetic Nyx dark theme

$ t3 theme set --help
DESCRIPTION
  Set the environment's theme; connected clients switch to it.

USAGE
  t3 theme set [flags] <theme>

ARGUMENTS
  theme string    A theme id (a built-in, or one this machine publishes, where themes/nightfall.json is "nightfall"), or a path to a theme JSON file to publish and set in one step.

FLAGS
  --base-dir string    Explicit T3 Code data directory; runtime state is stored under userdata (equivalent to T3CODE_HOME).
  --id string          Theme id to publish a file under, instead of its filename.

GLOBAL FLAGS
  --help, -h                                                          Show help information
  --version, -v                                                       Show version information
  --wizard                                                            Start wizard mode for a command
  --completions <bash|zsh|fish|powershell|sh|pwsh>                    Print shell completion script (choices: bash, zsh, fish, powershell, sh, pwsh)
  --log-level <all|trace|debug|info|warn|warning|error|fatal|none>    Sets the minimum log level (choices: all, trace, debug, info, warn, warning, error, fatal, none)
[exit 0]

$ t3 theme --help
DESCRIPTION
  Inspect and set environment-wide theme defaults.

USAGE
  t3 theme <subcommand> [flags]

GLOBAL FLAGS
  --help, -h                                                          Show help information
  --version, -v                                                       Show version information
  --wizard                                                            Start wizard mode for a command
  --completions <bash|zsh|fish|powershell|sh|pwsh>                    Print shell completion script (choices: bash, zsh, fish, powershell, sh, pwsh)
  --log-level <all|trace|debug|info|warn|warning|error|fatal|none>    Sets the minimum log level (choices: all, trace, debug, info, warn, warning, error, fatal, none)

SUBCOMMANDS
  set      Set the environment's theme; connected clients switch to it.
  clear    Remove the environment's theme; clients keep what they have.
  show     Show the environment's theme and its published themes.
[exit 0]

$ t3 theme set nyx.json --base-dir state
Published nyx.json as "nyx" and set it as the environment theme.

[exit 0]

$ t3 theme show --base-dir state
Environment theme: "nyx".

Published themes: nyx.

[exit 0]

$ Runtime-loaded t3_theme_set description
Restyle T3 Code itself, only when the user asks. With `theme`, publish it as `themeId` (the same id updates it) and switch this machine's web and desktop clients to it. Without `theme`, switch to a built-in or published `themeId`. `appearance` switches them to light, dark, or system mode, with or without a theme. Live full-access or default caller thread only.