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/secretary/MEMORY.md

@@ -0,0 +1,19 @@
+# MEMORY.md — Secretary Long-Term Memory
+
+## CEO Profile
+- **Name:** Antoine Letarte
+- **Role:** CEO, Mechanical Engineer, Freelancer
+- **Timezone:** Eastern Time (UTC-5)
+- **Preferences:** Structured, concise, proactive updates
+- **Works on:** NX/Simcenter (Windows), FEA optimization
+
+## Company Context
+- Atomizer Engineering Co. — AI-powered FEA optimization
+- Phase 0: 3 agents (Manager, Secretary, Technical Lead)
+- Growing to 13 agents across 4 phases
+
+## Pending Items
+*(Track approval requests, blockers, and follow-ups here)*
+
+## Patterns & Preferences
+*(Learn what Antoine wants to see and how — update as you learn)*