Add standard --option=[yes|no|auto] style CLI flag

# Description:
Many core Linux CLI tools provide a consistent pattern for options that can be explicitly toggled on/off or left to automatic detection:

```
--=[yes|no|auto]
```

This pattern makes CLI behavior more predictable and script-friendly, especially when output depends on context (e.g. whether stdout is a TTY, environment variables, or configuration defaults).

# Proposal:

* Introduce support for a general `yes|no|auto` style for relevant CLI flags.
* Default to `auto` when the option is omitted.
* Apply this consistently across features where “automatic detection” currently exists but cannot be explicitly overridden.

# Examples:
* `--color=[yes|no|auto]`