FEAT: Moving copilot instructions to skills

[rlundeen2]

Skills seem to be better supported than copilot instructions, and in my trial run, agents seem to adhere better.

This PR migrates PyRIT's subsystem-specific guidance from path-triggered instruction files (.github/instructions/*.instructions.md with applyTo frontmatter) to Agent Skills under .github/skills/<name>/SKILL.md. Ten "how-to" guides — converters, targets, scorers, scenarios, attacks, models, output, seed datasets, docs-sync, and frontend testing — become on-demand skills the agent invokes when working in the matching area, which surfaces them more reliably than applyTo globs did. The three broad, always-on conventions (style-guide, frontend-style-guide, test) stay as path-based instructions since they apply everywhere.

[romanlutz]

Doesn't that mean you have to explicitly use a specific agent vs right now you just use vanilla copilot and it works?

[rlundeen2]

Doesn't that mean you have to explicitly use a specific agent vs right now you just use vanilla copilot and it works?

Yeah, idk, we could always duplicate it. I feel like skills are more common and copilot seems to mostly ignore the instructions. But just an idea, I don't feel super strongly about it

[romanlutz]

Doesn't that mean you have to explicitly use a specific agent vs right now you just use vanilla copilot and it works?

Yeah, idk, we could always duplicate it. I feel like skills are more common and copilot seems to mostly ignore the instructions. But just an idea, I don't feel super strongly about it

The question is: do you have to say anything specific or select any particular agent to make it pick up these skills? Or did it do it automatically?