Add Token Pac-Man canvas extension

[jamesmontemagno]

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, workflow, or canvas extension 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, workflow, or canvas extension with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.
• I am targeting the main branch for this pull request.

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Description

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Type of Contribution

• New instruction file.
• New prompt file.
• New agent file.
• New plugin.
• New skill file.
• New agentic workflow.
• New canvas extension.
• Update to existing instruction, prompt, agent, plugin, skill, workflow, or canvas extension.
• Other (please specify):

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Additional Notes

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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

Adds a new Token Pac-Man canvas extension under extensions/token-pacman/ that renders a local HTML/canvas “Pac-Man board” and syncs it with live session AI-credit usage and quota/entitlement data.

Changes:

• Introduces the Token Pac-Man canvas runtime (extension.mjs) with SSE-based UI updates and agent actions (sync_usage, set_limit, reset_run).
• Adds extension metadata (canvas.json, copilot-extension.json, package.json) and end-user documentation (README.md).
• Includes gallery assets referenced by the extension metadata (added under assets/).

Show a summary per file

File	Description
extensions/token-pacman/README.md	Documents what the extension does and how to install/use agent actions.
extensions/token-pacman/package.json	Declares extension metadata used by the site/catalog (and should declare runtime deps).
extensions/token-pacman/extension.mjs	Implements the canvas, loopback HTTP server, SSE updates, usage/quota syncing, and actions.
extensions/token-pacman/copilot-extension.json	Provides gist-install metadata (name/version).
extensions/token-pacman/canvas.json	Provides Awesome Copilot gallery metadata (name/author/keywords/screenshots).

Review details

Comments suppressed due to low confidence (1)

extensions/token-pacman/extension.mjs:365

• setInterval(() => syncQuota(), 60_000) is never cleared. After all canvases are closed (onClose closes the HTTP server), the interval will keep the extension process alive and continue polling quota indefinitely.

Consider starting the interval when the first canvas instance opens and clearing it when servers.size === 0, or otherwise wiring cleanup into the extension lifecycle.

session.on("assistant.usage", (event) => {
    eventNanoAiu += Number(event.data?.copilotUsage?.totalNanoAiu) || 0;
    void syncUsage();
    void syncQuota();
});
setInterval(() => { void syncQuota(); }, 60_000);

• Files reviewed: 5/7 changed files
• Comments generated: 3
• Review effort level: Low