## Description
Add continue variable, and logic for resuming task sessions
<!-- Briefly describe what this PR does and why -->
## Type of Change
- [ ] New module
- [ ] New template
- [ ] Bug fix
- [X] Feature/enhancement
- [ ] Documentation
- [ ] Other
## Module Information
<!-- Delete this section if not applicable -->
**Path:** `registry/coder-labs/modules/codex`
**New version:** `v3.1.0`
**Breaking change:** [ ] Yes [X] No
## Testing & Validation
- [X] Tests pass (`bun test`)
- [X] Code formatted (`bun fmt`)
- [X] Changes tested locally
## Related Issues
<!-- Link related issues or write "None" if not applicable -->
