Sync Agent Instructions, Agents, and Skills

Mirror all GitHub Copilot customizations — instructions, custom agents, and agent skills — into every detected AI coding agent configuration found in this repository.

This instruction supports 12 agent ecosystems. Rather than creating files for every agent unconditionally, it detects which agents are already configured in the repo and syncs only those.

Source locations (Copilot / source of truth):

• .github/copilot-instructions.md — global instructions
• .github/instructions/*.instructions.md — path-scoped instructions
• .github/agents/*.agent.md — custom agent profiles
• .github/skills/<name>/SKILL.md — agent skills (open standard)

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