feat: add copy install command from skills list and modal

[Copilot]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• I have read and followed the Guidance for submissions involving paid services.
• My contribution adds a new instruction, prompt, agent, skill, or workflow file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, agent, skill, or workflow with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.
• I am targeting the staged branch for this pull request.

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Description

Surfaces a one-click copy of the gh skill install command directly from the skills UI, and updates docs to recommend gh skill install github/awesome-copilot <skill-name> as the primary installation method.

Docs updates (eng/constants.mjs, docs/README.skills.md)

• Skills usage section now lists gh skill install github/awesome-copilot <skill-name> as the primary install method; manual cp kept as fallback

Website UI (skills-render.ts, skills.ts, Modal.astro, modal.ts, utils.ts)

• Each skill card in the list gains a Copy Install button — copies gh skill install github/awesome-copilot <skill-id> to clipboard with a brief ✓ feedback state
• The skill file modal gains the same Copy Install button in the header toolbar, shown only when a skill is open (hidden for agents, instructions, plugins, etc.)
• Repo identifier extracted to a shared REPO_IDENTIFIER constant in utils.ts to avoid duplication

# What gets copied to clipboard
gh skill install github/awesome-copilot code-checklist

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Type of Contribution

• Other (please specify): Website UI feature + docs update for gh skill install CLI command

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Additional Notes

REPO_IDENTIFIER is exported from utils.ts and consumed by both skills.ts and modal.ts, so a future repo rename is a single-line change.

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[Copilot]

Pull request overview

Updates the Awesome Copilot docs and website UI to promote/support the new gh skill install command, including adding one-click copy of the install command from the skills list and from the file modal.

Changes:

• Add a shared REPO_IDENTIFIER constant for building gh skill install … commands in the website scripts.
• Add “Copy Install” UI in the skills list and in the modal (skills only), with clipboard copy + toast feedback.
• Update docs to recommend gh skill install github/awesome-copilot <skill-name> as the primary installation method, keeping manual copy as a fallback.

Show a summary per file

File	Description
website/src/scripts/utils.ts	Exports REPO_IDENTIFIER for consistent install command generation.
website/src/scripts/pages/skills.ts	Handles “Copy Install” clicks and copies the CLI install command to clipboard.
website/src/scripts/pages/skills-render.ts	Renders a “Copy Install” button per skill card.
website/src/scripts/modal.ts	Adds a modal toolbar “Copy Install” button (skills only) and copies the install command.
website/src/components/Modal.astro	Adds the modal “Copy Install” button markup.
website/src/content/docs/learning-hub/cli-for-beginners/05-skills.md	Documents gh skill install usage + examples and keeps manual install section.
eng/constants.mjs	Updates generated skills usage text to include gh skill install as primary.
docs/README.skills.md	Updates skills README usage to include gh skill install as primary.

Copilot's findings

• Files reviewed: 8/8 changed files
• Comments generated: 4