feat: Add Chain of Responsibility semantic anchor

[Nantero1]

Summary

• Adds Chain of Responsibility as a new semantic anchor
• Covers the GoF behavioral pattern for handler chains and middleware pipelines
• Includes anchor file, all-anchors include, and AgentSkill catalog entry

Why this anchor?

Chain of Responsibility activates: GoF behavioral pattern, request passes along handler chain, each handler decides process-or-pass, middleware concept (Express/Django), Telegram handler groups, dynamic chain composition, short-circuit capability.

Rich enough for a standalone anchor due to its ubiquity as the middleware pattern in modern frameworks — it transcends its GoF origin.

Files changed

• docs/anchors/chain-of-responsibility.adoc — new anchor file
• docs/all-anchors.adoc — added include in Design Principles section
• skill/semantic-anchor-translator/references/catalog.md — added catalog entry

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Reviewing files that changed from the base of the PR and between aefa0b4 and 8e6fbab.

📒 Files selected for processing (3)

• docs/all-anchors.adoc
• docs/anchors/chain-of-responsibility.adoc
• skill/semantic-anchor-translator/references/catalog.md

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[raifdmueller]

Review: ❌ Decline as main catalog anchor — but the content is good!

Chain of Responsibility is a valid semantic anchor, but as an individual GoF pattern it belongs under the new sub-anchor concept we're introducing (see #149).

We're merging GoF Design Patterns (#140) as an umbrella anchor. Individual patterns like Chain of Responsibility will be linked as sub-anchors — not in the main catalog, but discoverable through the GoF umbrella page.

What this means:

• This PR won't be merged in its current form
• Once we implement the sub-anchor structure, we'd welcome this as a sub-anchor under GoF
• The content quality is good and can be reused

Thank you for the contribution! The sub-anchor concept was actually inspired by this PR and #140 together.

[raifdmueller]

Closed — Chain of Responsibility is now included as a GoF sub-anchor (gof-chain-of-responsibility-pattern) under the umbrella anchors feature merged in #159.

[raifdmueller]

Chain of Responsibility is now included as a GoF sub-anchor (gof-chain-of-responsibility-pattern) under the umbrella anchors feature merged in #159. This PR can be closed.

[rdmueller]

thanx for your submission!