docs: adopt immutable design-system consumer contract

[chefadmin-netizen]

Summary

• add as the machine-readable contract
• keep as the human-readable mirror
• document scope and no-generated-copy rule in

Contract

The consumer pins to immutable commit . This PR is contract/documentation-only; it does not make a GitHub check required, alter releases, or copy generated design-system output.

Dependency

Central schema/validator hub PR: GroepOnline/design-system#0

Verification

The branch was created from this repository's default branch and the contract shape was checked against the central schema. The PR remains draft until the hub contract is reviewed and the reusable/local validation path is added.

[linear-code]

GRO-1078

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 40b6a979-3fe7-45c4-a144-fd02947d6dde

📥 Commits

Reviewing files that changed from the base of the PR and between ab6d2ff and 84490ba.

📒 Files selected for processing (4)

• .github/design-system.json
• .github/design-system.yml
• .github/workflows/design-system-contract.yml
• DESIGN-SYSTEM.md

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📝 Walkthrough

Walkthrough

The pull request adds machine-readable design-system contract files, human-readable documentation, and a GitHub Actions workflow that validates the JSON contract with a pinned validator.

Changes

Design-system contract

Layer / File(s)	Summary
Contract definition and documentation .github/design-system.json, .github/design-system.yml, DESIGN-SYSTEM.md	The repository defines a Gold-tier, GUI-scoped design-system contract with an immutable source commit, no commands, and rules for generated output.
CI contract validation .github/workflows/design-system-contract.yml	The workflow runs on pushes and pull requests, uses read-only contents permission, checks out a pinned validator, and validates .github/design-system.json.

Estimated code review effort: 2 (Simple) | ~10 minutes

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/design-system-consumer-contract-20260804

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