feat: Initial OPHION structure

- Go backend with Fiber framework
- Agent for metrics collection
- Docker Compose for self-hosted
- Auth middleware (JWT + API Keys)
- Rate limiting
- Install script

install.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -e
+
+echo "🐍 OPHION - Observability Platform Installer"
+echo "============================================="
+
+# Check Docker
+if ! command -v docker &> /dev/null; then
+    echo "❌ Docker not found. Installing..."
+    curl -fsSL https://get.docker.com | sh
+fi
+
+# Check Docker Compose
+if ! command -v docker-compose &> /dev/null && ! docker compose version &> /dev/null; then
+    echo "❌ Docker Compose not found. Please install it."
+    exit 1
+fi
+
+# Create directory
+INSTALL_DIR="${OPHION_DIR:-/opt/ophion}"
+mkdir -p "$INSTALL_DIR"
+cd "$INSTALL_DIR"
+
+# Download docker-compose
+echo "📥 Downloading OPHION..."
+curl -fsSL https://raw.githubusercontent.com/bigtux/ophion/main/deploy/docker/docker-compose.yml -o docker-compose.yml
+
+# Generate secrets
+JWT_SECRET=$(openssl rand -hex 32)
+echo "JWT_SECRET=$JWT_SECRET" > .env
+
+# Start services
+echo "🚀 Starting OPHION..."
+docker compose up -d
+
+echo ""
+echo "✅ OPHION installed successfully!"
+echo ""
+echo "📊 Dashboard: http://localhost:3000"
+echo "🔌 API:       http://localhost:8080"
+echo ""
+echo "Next steps:"
+echo "1. Open http://localhost:3000 in your browser"
+echo "2. Create your admin account"
+echo "3. Add your first server with the agent"
+echo ""
+echo "To install the agent on a server:"
+echo "  curl -fsSL https://get.ophion.io/agent | bash"
+echo ""