Document new AI issue management process

Problem/Motivation

Part of 📌 Issue workflow AI development Active

Steps to reproduce (required for bugs, but not feature requests)

Please provide information like AI modules enabled, which AI provider, browser, etc.

Proposed resolution

Update existing docs to include the new issue management process

Remaining tasks

• Tweak existing content as needed
• Add new content
• Review, approve, and merge

Optional: Other details as applicable (e.g., User interface changes, API changes, Data model changes