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/.env.template

@@ -0,0 +1,23 @@
+# Atomizer Engineering Co. — Environment Variables
+# Copy this to .env and fill in the values
+# NEVER commit .env to version control
+
+# === Slack Tokens (from Step 3 of README) ===
+SLACK_BOT_TOKEN=xoxb-REPLACE-ME
+SLACK_APP_TOKEN=xapp-REPLACE-ME
+
+# === API Keys ===
+# Anthropic (for Opus 4.6 — Manager, Secretary, Tech Lead, Optimizer, Auditor)
+ANTHROPIC_API_KEY=sk-ant-REPLACE-ME
+
+# OpenAI (for GPT-5.3-Codex — Study Builder, future agents)
+OPENAI_API_KEY=sk-REPLACE-ME
+
+# Google (for Gemini 3.0 — Researcher, future agents)
+GOOGLE_API_KEY=REPLACE-ME
+
+# === Gateway ===
+GATEWAY_TOKEN=atomizer-gw-REPLACE-ME
+
+# === Antoine's Slack User ID ===
+OWNER_SLACK_ID=REPLACE-ME