Based on the HOS architecture, I recommend a six-tier data hierarchy for CHOS:
1. **Symbol** — The atomic unit of meaning. A single token, glyph, or identifier. Symbols are immutable once created.
2. **Particle** — A bound group of Symbols with contextual metadata. Particles carry semantic weight and can be combined.
3. **Atom** — A structured data object composed of Particles. Atoms have schemas, validation rules, and type safety.
4. **Holon** — An autonomous, self-organizing unit composed of Atoms. Holons can contain sub-Holons (fractal structure). Each Holon has its own governance rules.
5. **District** — A spatial grouping of Holons sharing a domain context. Districts define boundaries, access policies, and inter-Holon communication protocols.
6. **Mainland** — The top-level operating system container. A Mainland encompasses all Districts and provides the unified workspace experience.
This progression mirrors both natural systems (quantum → atom → molecule → cell → organ → organism) and computational hierarchies (bit → byte → struct → module → service → platform).