add: CHANGELOG.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Neo

CHANGELOG.md

@@ -0,0 +1,23 @@
+# Changelog
+
+All notable changes to 0pnMatrx are documented here.
+
+---
+
+## [0.1.0] — 2026-04-01
+
+### Initial Release
+
+- Three-agent architecture: Neo, Trinity, Morpheus
+- ReAct reasoning loop with full tool dispatch
+- File-backed memory system
+- HTTP gateway on configurable port
+- 36 skills loaded via skills loader
+- HiveMind shared state across all agents
+- 20 blockchain capabilities on Base (Ethereum L2)
+- Unified Rexhepi Framework governing all agent decisions
+- Full SDK for external integrations
+- Migration system for upgrading between versions
+- Support for Ollama (local), OpenAI, Anthropic, NVIDIA, Gemini
+- One-command install and start scripts
+- MIT licensed