refactor: clean repository structure for v0.1.0 open source release

- Remove Go artifacts (cmd/, internal/, pkg/, go.mod)
- Move furt-lua/* content to repository root
- Restructure as clean src/, config/, scripts/, tests/ layout
- Rewrite README.md as practical tool documentation
- Remove timeline references and marketing language
- Clean .gitignore from Go-era artifacts
- Update config/server.lua with example.org defaults
- Add .env.production to .gitignore for security

Repository now ready for open source distribution with minimal,
focused structure and generic configuration templates.
close issue DAW/furt#86

scripts/start.sh

@@ -0,0 +1,116 @@
+#!/bin/sh
+# furt-lua/scripts/start.sh
+# Start script for Furt Lua HTTP-Server
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Script directory (POSIX-compatible)
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"                 # für src/, cd
+REPO_ROOT="$(dirname "$(dirname "$SCRIPT_DIR")")"      # für .env
+
+echo -e "${GREEN}=== Furt Lua HTTP-Server Startup ===${NC}"
+
+# Check required dependencies
+echo -e "${YELLOW}Checking dependencies...${NC}"
+
+# Load environment variables - Universal Config Detection
+echo -e "${YELLOW}Loading environment variables...${NC}"
+if [ -f "$REPO_ROOT/.env" ]; then
+    echo -e "${GREEN}[OK]${NC} Loading from $REPO_ROOT/.env"
+    export $(grep -v '^#' "$REPO_ROOT/.env" | grep -v '^$' | xargs)
+elif [ -f "/usr/local/etc/furt/environment" ]; then
+    echo -e "${GREEN}[OK]${NC} Loading from /usr/local/etc/furt/environment"
+    export $(grep -v '^#' /usr/local/etc/furt/environment | grep -v '^$' | xargs)
+elif [ -f "/etc/furt/environment" ]; then
+    echo -e "${GREEN}[OK]${NC} Loading from /etc/furt/environment"
+    export $(grep -v '^#' /etc/furt/environment | grep -v '^$' | xargs)
+else
+    echo -e "${YELLOW}[WARN]${NC} No config file found in project root or system"
+fi
+
+# Setup Lua from config (after loading environment)
+LUA_CMD="${LUA_COMMAND:-lua51}"
+LUA_VER="${LUA_VERSION:-5.1}"
+
+# Check if configured Lua is installed (POSIX-compatible)
+if ! [ -x "$LUA_CMD" ]; then
+    echo -e "${RED}Error: $LUA_CMD is not installed${NC}"
+    echo "Install with: pkg_add lua51 (OpenBSD) or apt install lua5.1 (Ubuntu)"
+    exit 1
+fi
+
+# Check Lua version
+LUA_VERSION_OUTPUT=$($LUA_CMD -v 2>&1 | head -n1)
+echo -e "${YELLOW}Lua command:${NC} $LUA_CMD ($LUA_VERSION_OUTPUT)"
+
+# Test lua-socket
+$LUA_CMD -e "require('socket')" 2>/dev/null || {
+    echo -e "${RED}Error: lua-socket not found for $LUA_CMD${NC}"
+    echo "Install with: pkg_add lua51-socket (OpenBSD) or apt install lua-socket (Ubuntu)"
+    exit 1
+}
+echo -e "${GREEN}✓${NC} lua-socket found"
+
+# Test lua-cjson (system or luarocks)
+LUA_PATH="$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;" \
+LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;" \
+$LUA_CMD -e "require('cjson')" 2>/dev/null || {
+    echo -e "${RED}Error: lua-cjson not found for $LUA_CMD${NC}"
+    echo "Install with: pkg_add lua51-cjson (OpenBSD) or luarocks install lua-cjson"
+    exit 1
+}
+echo -e "${GREEN}✓${NC} lua-cjson found"
+
+# Test lua-ssl (optional for HTTPS)
+LUA_PATH="$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;" \
+LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;" \
+$LUA_CMD -e "require('ssl')" 2>/dev/null && {
+    echo -e "${GREEN}✓${NC} lua-ssl found (HTTPS ready)"
+} || {
+    echo -e "${YELLOW}○${NC} lua-ssl not found (install with: luarocks install luaossl)"
+}
+
+# Check SMTP configuration (korrekte Variable-Namen)
+if [ -n "$SMTP_USERNAME" ] && [ -n "$SMTP_PASSWORD" ]; then
+    echo -e "${GREEN}[OK]${NC} SMTP configured: $SMTP_USERNAME"
+else
+    echo -e "${YELLOW}[WARN]${NC} SMTP credentials missing in .env"
+    echo "Add SMTP_USERNAME and SMTP_PASSWORD to .env"
+fi
+
+# Change to project directory
+cd "$PROJECT_DIR"
+
+# Add current directory and luarocks to Lua path for requires (dynamic version)
+export LUA_PATH="$PROJECT_DIR/src/?.lua;$PROJECT_DIR/?.lua;$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;"
+export LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;"
+
+echo -e "${GREEN}Starting Furt HTTP-Server...${NC}"
+echo -e "${YELLOW}Project directory:${NC} $PROJECT_DIR"
+echo -e "${YELLOW}Lua paths configured for $LUA_CMD (version $LUA_VER)${NC}"
+echo ""
+
+# Auto-detect service context
+if [ ! -t 0 ] || [ ! -t 1 ]; then
+    # No TTY = Service mode (rcctl)
+    echo "Starting Furt in daemon mode..."
+    $LUA_CMD src/main.lua &
+    echo "Furt started (PID: $!)"
+else
+    # Interactive mode (manual/development)
+#    echo "Furt HTTP-Server started on 127.0.0.1:8080"
+#    echo "Press Ctrl+C to stop"
+    $LUA_CMD src/main.lua
+fi
+
+
+# Start server
+# $LUA_CMD src/main.lua
+