Initial commit: EifelDC - Discord-like Matrix chat platform

Includes server (Rust/Axum API proxy with voice management),
Tauri desktop client with Svelte UI, bot-sdk, Docker infra
(Synapse, PostgreSQL, Coturn, Nginx), and CI/CD pipeline.

infra/scripts/start.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+INFRA_DIR="$(dirname "$SCRIPT_DIR")"
+
+if command -v docker &>/dev/null && [ -f "${INFRA_DIR}/docker-compose.yml" ]; then
+    echo "=== Starting EifelDC Infrastructure (Docker) ==="
+    cd "${INFRA_DIR}"
+    docker compose up -d
+
+    echo ""
+    echo "Waiting for services..."
+    sleep 5
+
+    echo ""
+    echo "Container status:"
+    docker compose ps
+
+    echo ""
+    echo "Running health check..."
+    "${SCRIPT_DIR}/healthcheck.sh" || true
+else
+    echo "=== Starting EifelDC Infrastructure (Native) ==="
+    sudo systemctl start postgresql
+    sudo systemctl start eifeldc-synapse
+    sudo systemctl start coturn
+    sudo systemctl start nginx
+    sudo systemctl start eifeldc-server
+
+    echo "All services started."
+    echo ""
+    "${SCRIPT_DIR}/healthcheck.sh" || true
+fi