[DOCS] Interactive mode docs missing optional `/plan [description]` argument behavior

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/interactive-mode

Section/Topic

Built-in command table entry for /plan.

Current Documentation

The command table currently says:

| /plan | Enter plan mode directly from the prompt |

No optional argument form is documented.

What's Wrong or Missing?

Release v2.1.72 added an optional description argument for /plan (for example, /plan fix the auth bug) that both enters plan mode and immediately starts planning from the provided text.

The current docs only describe bare /plan, so users are not told they can pass the plan request inline.

Suggested Improvement

Update the /plan row to include the optional argument form and behavior, for example:

• /plan [description] enters plan mode
• If description is provided, planning starts immediately with that description
• Include one concrete example such as /plan fix the auth bug

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Line(s) | Context |
|------|---------|---------|
| https://code.claude.com/docs/en/interactive-mode | 132 | /plan is documented without optional description argument |

Total scope: 1 page affected

Source: Release v2.1.72

• Added optional description argument to /plan (e.g., /plan fix the auth bug) that enters plan mode and immediately starts