[FEATURE]: Guided AGENTS.md setup flow for /init command

[LifetimeVip]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

The /init command generates an AGENTS.md file, but the quality depends heavily on the user knowing what to include. A guided/interactive flow would help users create high-signal AGENTS.md files.

Suggested approach:

1. Interactive prompts during /init: After the user types /init, present a series of questions:

   • What is the main goal of this project?
   • What are the key conventions or patterns used?
   • Are there any critical files or directories the agent should know about?
   • Any preferred workflows or build commands?

2. Template-based generation: Use answers to fill a structured AGENTS.md template with sections for project overview, conventions, critical paths, and workflows.

3. Preview before save: Show the generated content and let the user edit before saving.

This complements the bug fix in #19341 (/init truncation). This request is about improving the quality of the generated AGENTS.md content, not fixing truncation.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: Improve /init, /review, /new, /terminal commands for guided AGENTS.md setup #25655: Recently closed issue by the same author requesting the same guided AGENTS.md setup flow for /init, including interactive prompts, template-based generation, and preview before save — the core request appears identical.

If this is intentionally a refined or scoped-down version of #25655, please clarify the distinction in the issue description.