test: add contract verification for php-devops wishlist
18 tests verify the full workspace contract is implemented:
- repos.yaml: loads, required fields, valid types, deps exist,
topological order, foundations, defaults, meta clone rules, domains
- workspace.yaml: loads, active package in registry
- .core/ folder: exists, has spec doc
- Scripts: setup.sh exists+executable, install scripts exist
- Plugins: marketplace.json exists, all plugins have manifests
Enables archival of core/php-devops and core/go-agent.
Co-Authored-By: Virgil <virgil@lethean.io>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>