Move AI agent config to shared location for Claude Code and GitHub Copilot

[ramezgerges]

Description of Change

Both tools now read from the same files:

• AGENTS.md: shared project instructions (single source of truth)
• .claude/skills/: shared skill definitions (17 skills)
• CLAUDE.md: imports @AGENTS.md for Claude Code
• .github/copilot-instructions.md: imports @AGENTS.md for Copilot

Skills moved from .github/skills/ to .claude/skills/ since both tools discover skills there. All internal path references updated across SKILL.md files, scripts, and documentation.

Bugs Fixed

• Fixes #

API Changes

None.

Behavioral Changes

None.

Required skia PR

None.

PR Checklist

• Has tests (if omitted, state reason in description)
• Rebased on top of main at time of PR
• Merged related skia PRs
• Changes adhere to coding standard
• Updated documentation

[github-actions]

📦 Try the packages from this PR

Warning

Do not run these scripts without first reviewing the code in this PR.

Step 1 — Download the packages

bash / macOS / Linux:

curl -fsSL https://raw.githubusercontent.com/mono/SkiaSharp/main/scripts/get-skiasharp-pr.sh | bash -s -- 3692

PowerShell / Windows:

iex "& { $(irm https://raw.githubusercontent.com/mono/SkiaSharp/main/scripts/get-skiasharp-pr.ps1) } 3692"

Step 2 — Add the local NuGet source

dotnet nuget add source ~/.skiasharp/hives/pr-3692/packages --name skiasharp-pr-3692

More options

Option	Description
--successful-only / -SuccessfulOnly	Only use successful builds
--force / -Force	Overwrite previously downloaded packages
--list / -List	List available artifacts without downloading
--build-id ID / -BuildId ID	Download from a specific build

Or download manually from Azure Pipelines — look for the nuget artifact on the build for this PR.

Remove the source when you're done:

dotnet nuget remove source skiasharp-pr-3692

[dotnet-policy-service]

Hey there @@ramezgerges! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.