* feat: add flexible studio depth foundations
- add context manifests, engine references, and studio policy gates
- refresh Truthmark 2.2.1 generated surfaces and lane docs
- update OpenSpec tasks and validation coverage
* docs: add Open Game Studio product truth
- add product-capability truth doc for the Codex-native CLI
- cross-link product and engineering truth in route YAML
- update product truth index
* chore: remove stale planning artifacts
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Co-authored-by: MerlinH <merlinh221@gmail.com>
- migrate Truthmark repository truth into the v2 workspace layout
- add OpenSpec change artifacts for the flexible studio depth refactor
- add studio policy primitives plus approval store and CLI management
- add validation, CLI, and policy tests for approvals and studio gates
Co-authored-by: MerlinH <merlinh221@gmail.com>
