Initial implementation of xtrm-agent multi-agent system

Multi-agent AI automation system with shared message bus, specialized
roles (coder/researcher/reviewer), and deny-by-default security.

- Config system with Pydantic validation and YAML loading
- Async message bus with inter-agent delegation
- LLM providers: Anthropic (Claude) and LiteLLM (DeepSeek/Kimi/MiniMax)
- Tool system: registry, builtins (file/bash/web), approval engine, MCP client
- Agent engine with tool-calling loop and orchestrator for multi-agent management
- CLI channel (REPL) and Discord channel
- Docker + Dockge deployment config
- Typer CLI: chat, serve, status, agents commands

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

README.md

@@ -0,0 +1,42 @@
+# xtrm-agent
+
+Multi-agent AI automation system with shared message bus, specialized roles, and deny-by-default security.
+
+## Architecture
+
+Multiple specialized agents share a message bus and can delegate to each other:
+
+- **Coder Agent** — Claude, file+bash tools, coding-focused
+- **Researcher Agent** — DeepSeek/Kimi, web tools, research-focused
+- **Reviewer Agent** — Claude, read-only tools, code review
+
+## Quick Start
+
+```bash
+# Install
+uv sync
+
+# Interactive chat (default: coder agent)
+uv run xtrm-agent chat
+
+# Target a specific agent
+uv run xtrm-agent chat --agent researcher
+
+# Single-shot message
+uv run xtrm-agent chat -m "write a hello world script"
+
+# Run all agents + Discord bot
+uv run xtrm-agent serve
+
+# Show status
+uv run xtrm-agent status
+```
+
+## Configuration
+
+Edit `config.yaml` to configure providers, agents, tools, and channels.
+Agent definitions live in `agents/*.md` with YAML frontmatter.
+
+## Deployment
+
+Deploy via Dockge on Unraid using the included `compose.yaml`.