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/skills/atomizer-protocols/protocols/SYS_20_AGENT_MEMORY.md

@@ -0,0 +1,60 @@
+# SYS_20 — Agent Memory Protocol
+
+## Purpose
+Defines how agents read and write shared knowledge across the company.
+
+## Memory Layers
+
+### Layer 1: Company Memory (Shared, Read-Only)
+**Location:** `atomizer-protocols` and `atomizer-company` skills
+**Access:** All agents read. Manager proposes updates → Antoine approves.
+**Contains:** Protocols, company identity, LAC critical lessons.
+
+### Layer 2: Agent Memory (Per-Agent, Read-Write)
+**Location:** Each agent's `MEMORY.md` and `memory/` directory
+**Access:** Each agent owns their memory. Auditor can read others (for audits).
+**Contains:**
+- `MEMORY.md` — Long-term role knowledge, lessons, patterns
+- `memory/<project>.md` — Per-project working notes
+- `memory/YYYY-MM-DD.md` — Daily activity log
+
+### Layer 3: Project Knowledge (Shared, via Repo)
+**Location:** `/repos/Atomizer/knowledge_base/projects/<project>/`
+**Access:** All agents read. Manager coordinates writes.
+**Contains:**
+- `CONTEXT.md` — Project briefing (parameters, objectives, constraints)
+- `decisions.md` — Key decisions made during the project
+- `model-knowledge.md` — CAD/FEM details from KB Agent
+
+## Rules
+
+### Writing Memory
+1. **Write immediately** — don't wait until end of session
+2. **Write in your own workspace** — never modify another agent's files
+3. **Daily logs are raw** — `memory/YYYY-MM-DD.md` captures what happened
+4. **MEMORY.md is curated** — distill lessons from daily logs periodically
+
+### Reading Memory
+1. **Start every session** by reading MEMORY.md + recent daily logs
+2. **Before starting a project**, read the project's CONTEXT.md
+3. **Before making technical decisions**, check LAC_CRITICAL.md
+
+### Sharing Knowledge
+When an agent discovers something the company should know:
+1. Write it to your own MEMORY.md first
+2. Flag it to Manager: "New insight worth sharing: [summary]"
+3. Manager reviews and decides whether to promote to company knowledge
+4. If promoted: Manager directs update to shared skills or knowledge_base/
+
+### What to Remember
+- Technical decisions and their reasoning
+- Things that went wrong and why
+- Things that worked well
+- Client preferences and patterns
+- Solver quirks and workarounds
+- Algorithm performance on different problem types
+
+### What NOT to Store
+- API keys, passwords, tokens
+- Client confidential data (store only what's needed for the work)
+- Raw FEA output files (too large — store summaries and key metrics)