feat: initialize shared vault — 2026-04-10

agent-shared/decisions-log.md

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+# Decisions Log
+
+## 2026-04-10
+
+| Decision | Date | Rationale |
+|----------|------|-----------|
+| Flip Claw3D to Amun | 2026-04-10 | Amun has more resources |
+| Horus = gateway only | 2026-04-10 | Gateway stable, less overhead |
+| Tailscale for agent sync | 2026-04-10 | VPS firewall blocks direct connections |
+| Obsidian vault for cross-agent memory | 2026-04-10 | Unified knowledge layer for team |
+
+## Architecture Decisions
+
+- All 3 agents (Horus, Amun, Cleo) share vault via GitHub
+- Mistake tracking is shared — all learn from all
+- Compaction preserves todo list, re-read vault after
+- Sync on: task start, every 3-5 tool calls, task completion
+
+## Updated: 2026-04-10