Add Expert Angular Frontend Engineer agent

[zshn-dev]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• 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.

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Description

Add a new agent definition for an Expert Angular 21 Frontend Engineer (agents/expert-angular-frontend-engineer.agent.md) including metadata, expertise/guidelines, and extensive code examples demonstrating standalone components, Signals, zoneless change detection, inject(), reactive patterns, testing, routing, and performance best practices. Also update docs/README.agents.md to register the new agent with install badges and a short 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.
• Update to existing instruction, prompt, agent, plugin, skill, or workflow.
• Other (please specify):

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Additional Notes

None

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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

This PR adds a new Expert Angular Frontend Engineer agent definition and updates multiple plugin configurations to use directory-based agent/skill references instead of explicit file listings. The PR also includes several new partner agents.

Changes:

• Adds new Expert Angular Frontend Engineer agent with Angular 21 best practices
• Updates 40+ plugin.json files to use "./agents" and "./skills/*" patterns instead of explicit file lists
• Adds 10 new partner agents (PagerDuty, Octopus Deploy, Neon, MongoDB, etc.)
• Updates README.agents.md to register the new Angular agent

Reviewed changes

Copilot reviewed 139 out of 234 changed files in this pull request and generated no comments.

File	Description
plugins/*/plugin.json	Simplified to use directory references instead of file arrays
plugins/partners/agents/*	New partner integration agents added
docs/README.agents.md	Registration of new Angular agent

[aaronpowell]

it looks like you've branched off the main branch, not staged meaning you have all the materialised plugin files.

You can fix this with:

git fetch origin staged
git rebase --onto origin/staged origin/main <your branch name>
git push --force-with-lease

Or by using the script npm run plugin:clean

[zshn-dev]

it looks like you've branched off the main branch, not staged meaning you have all the materialised plugin files.

You can fix this with:

git fetch origin staged
git rebase --onto origin/staged origin/main <your branch name>
git push --force-with-lease

Or by using the script npm run plugin:clean

Thank you. Sync'd with parent branch and created #922 instead.