<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Refactor**
- Updated workspace permission handling to use a unified role field within workspace data instead of separate admin and owner flags.
- Permission checks now rely on the workspace role for determining admin and owner status.
- **Chores**
- Removed deprecated queries and types related to admin and owner status.
- Cleaned up internal logic and variable naming for improved consistency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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