[feat] add nonumber option for `editWithInsstruction` mode

Description

Contributor guide

Tech stack

lua

Domain

tooling

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

Lua programmingNeovim plugin basics

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70

Research direction

The issue requests adding a `nonumber` option to the `editWithInstruction` mode. First, locate the source code handling the `editWithInstruction` command, likely in a Lua file under `lua/chatgpt/` directory. Review how existing options are defined and parsed, and add a new boolean option `nonumber`. The change is localized and should be straightforward. No linked PRs or comments provide additional context.