Convert the 3 markdown issue templates (.md) to GitHub Issue Forms (.yml)
to enable interactive form elements, and add an AI disclosure section per
the AI Policy (AI_POLICY.md):
- Required checkbox to acknowledge having read the AI Policy
- Required dropdown for AI usage (none / fully / partially with explanation)
- Optional input for model(s) used (open-weight examples in placeholder)
- Optional input for tool(s) used (FOSS examples in placeholder)
- Optional textarea to explain how AI was used (for the partial option)
The existing template content and structure is preserved, only converted
from markdown to the Issue Forms schema.
