Feature Request: Support for referencing prompts via slash commands (e.g., /prompt-name) #1334
Description
Describe the feature or problem you'd like to solve
Users interacting with Copilot CLI via Slack (e.g., through a Slack command like /github copilot) cannot easily reference existing prompts or context from files like they can in VS Code.
Proposed solution
Currently, VS Code allows users to reference specific prompts or contexts using slash commands. It would be highly beneficial if the Copilot CLI also supported this functionality.
For example, a user should be able to type something like:
/speckit.constitution [additional prompt text]
This would allow for better consistency across Copilot interfaces and more efficient prompting within the terminal environment.
Example prompts or workflows
No response
Additional context
No response