🌐 Phase 4: Distributed Cognitive Mesh API & Embodiment Layer

**Objective:**  
Expose the network via REST/WebSocket APIs and bind to Unity3D, ROS, and web agents for embodied cognition.

**Subtasks:**
- [ ] 4.1 API & Endpoint Engineering
- [ ] 4.2 Embodiment Bindings
- [ ] 4.3 Integration Verification

**Tensor signature:** `[agents, sensors, effectors, state]`
                