Angular Agent Skills

### Which @angular/* package(s) are relevant/related to the feature request?

_No response_

### Description

Agent Skill (https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) is another new way to provide context for LLMs.

### Proposed solution

Is creating Agent Skills planned within Angular organisation or a good candidate for a community open-source project?

Just willing to avoid duplicate efforts before starting one :)

### Alternatives considered

community open-source project

先閱讀連結的 Agent Skills 概覽，以及 issue 中關於 Angular 是否應支援或託管 Agent Skills 的討論。確認 Angular 組織是否有規劃中的範疇；只有在釐清該所有權與提議的方向後，這個 issue 才算完成。

由索引模型根據 Issue 內容生成。