feat: add Atomizer HQ multi-agent cluster infrastructure

- 8-agent OpenClaw cluster (Manager, Tech-Lead, Secretary, Auditor,
  Optimizer, Study-Builder, NX-Expert, Webster)
- Orchestration engine: orchestrate.py (sync delegation + handoffs)
- Workflow engine: YAML-defined multi-step pipelines
- Agent workspaces: SOUL.md, AGENTS.md, MEMORY.md per agent
- Shared skills: delegate, orchestrate, atomizer-protocols
- Capability registry (AGENTS_REGISTRY.json)
- Cluster management: cluster.sh, systemd template
- All secrets replaced with env var references

hq/workspaces/nx-expert/memory/2026-02-11.md

@@ -0,0 +1,13 @@
+# 2026-02-11 — NX Expert Onboarding
+
+## Setup
+- Agent created and configured
+- NXOpen MCP documentation server installed at `/home/papa/atomizer/tools/nxopen-mcp/`
+- Data indexed: 15,219 NXOpen classes, 64,320 methods, 149 nxopentse functions, 287 pyNastran classes
+- Bound to #research-and-development channel
+
+## MCP Server
+- Repo: `http://100.80.199.40:3000/Antoine/NXOpen-MCP.git`
+- Uses ChromaDB for semantic search + JSON caches for exact lookups
+- CPU-only torch (no CUDA needed on dalidou)
+- Python 3.12, sentence-transformers for embeddings