Engines (of Mainland) · engines
Owner directive (2026-06-12), canonical. "Mainland is the Work OS. It is made of four engines, each owning one domain" — Sapiens3 (the Datans), Dynamic Work (Ventures & Endeavors), CodeLand (the Districts), Atomic Holons (the Holon). [src: wiki/engines/cognis-and-kernels.md:7] Confirmed as C-03: "4 engines: CLand, Sapiens3, DWork, AtomicHolon. Not 5." [src: wiki/development/HANDOFF.md:135]
Content
Mainland — THE Operating System — is made of four engines, each owning exactly one domain:
| Engine | Owns |
|---|---|
| sapiens3 | "the Datans (the agents) — microservices + API gateways; runs the Cognitive Loop" |
| dwork (Dynamic Work) | "Ventures and Endeavors (the work)" |
| CodeLand (CLand) | "the Districts — Zones, PADs, PODs (all the UI / spatial surface)" |
| Atomic Holons | "the Holon — the atom, the division (the knowledge unit)" |
[src: wiki/engines/cognis-and-kernels.md:9-14]. The code registry KERNEL_ENGINES ships exactly these four: cland, sapiens3, dwork, atomic-holon [src: HOS-Webdoc/web/src/lib/hos-architecture.ts:433-482].
Every engine exposes one cogni (its system-function interface) backed by its own kernel (private runtime + resources) — one kernel per Cogni [src: wiki/engines/cognis-and-kernels.md:23]. The cognitive-loop — the one rule — passes through every Cogni and its kernel in the fixed sequence Cognis → Kernels → Neuralwares, and the neural-engine runs that sequence on every loop [src: wiki/engines/cognitive-loop.md:3]. This is how the earlier "5th engine" resolves: the Neural Engine is the runner of the loop across the four engines (the Lighthouse, n8n — "connects the Kernels using the Cognis" [src: HOS-Webdoc/web/src/lib/sapiens3/neuralware-registry.ts:57]), not a fifth peer domain-owner.
Two more OSs run over Mainland — they expose Cognis but are not Mainland engines: Bastion (Finance/Blockchain OS — Identity Tokens per host) and remotica (Communication/Presence OS — Portals/permissions). That is why the Cognis table has six rows for four engines [src: wiki/engines/cognis-and-kernels.md:27-34]. Cosmos is the HyperOS — the running instance of all of them [src: wiki/engines/cognis-and-kernels.md:21].
Variants
| # | Definition (verbatim) | Source | Ruling | Status |
|---|---|---|---|---|
| A | "4 engines: CLand, Sapiens3, DWork, AtomicHolon. Not 5. (Marketing line '5 engines' on the landing is stale copy — code has 4.)" | [src: wiki/development/HANDOFF.md:135] | C-03 + owner directive 2026-06-12 [src: wiki/engines/cognis-and-kernels.md:7] + owner-canonical OS model 2026-06-17 (memory spec_os_model_canonical) → chosen | canonical |
| B | "RESOLVED: 5 engines per gates.md lines 68-73 — Neural Engine, Sapiens 3, Atomic Holons, CLand, DWork… Neural Engine is the kernel-level workflow engine (N8N+ComfyUI+LLM) that Sapiens3 uses to execute." | [src: HOS-Webdoc/web/src/data/hos-specification.ts:430] (D21, matching D12 [src: HOS-Webdoc/web/src/data/hos-specification.ts:589]) | Superseded by A (2026-06 canon): the Neural Engine is re-positioned as the runner of the Cognitive Loop across the four engines, not a peer engine | variant |
| C | Six Cognis rows: "Sapiens3 · Atomic Holons · CodeLand · Dynamic Work · Bastion (over Mainland) · Remotica (over Mainland)" | [src: wiki/engines/cognis-and-kernels.md:27-34] | Not a rival engine count — Bastion/Remotica are OSs over Mainland that expose Cognis; consistent with A | canonical (clarification) |
| D | "The owner confirmed all proposed new engines. The rebuild defines 8 kernel engines" (adds Cogni Runtime, Loop Scheduler, Chromium Integration, Genome/Instancing) | [src: wiki/development/ARCHITECTURE-CHARTER.md:70] | Rebuild-charter enumeration; the owner-canonical model 2026-06-17 "corrects '8 engines/Petra'" (memory spec_os_model_canonical) — the four additions are runtime/infrastructure layers, not domain engines | deprecated |
Composition
- uses: cogni (one per engine), kernel (one per Cogni), neural-engine (runs the loop across all engines), neuralware (plug-and-play Cognis equipped into the loop)
- used-by: cognitive-loop (traverses every engine's Cogni + kernel), districts (CLand renders them), datan (Sapiens3 owns them), holon (Atomic Holons owns it), genome (every venture instance carries engine config)
See also
- cognitive-loop
- sapiens3 · dwork
- petra — the legacy "governance gate" that D-variant charters layered across engines
- [Upstream wiki page](../../../wiki/engines/cognis-and-kernels.md)