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/production_test_sequence.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+# Production Test für api.dragons-at-work.de
+
+echo "Testing Production API via Apache Proxy"
+echo "======================================="
+
+# Test 1: HTTPS Health Check
+echo ""
+echo "[1] Testing HTTPS Health Check..."
+https_health=$(curl -s https://api.dragons-at-work.de/health)
+echo "HTTPS Response: $https_health"
+
+if echo "$https_health" | grep -q "healthy"; then
+    echo "[OK] HTTPS Proxy working"
+else
+    echo "[ERROR] HTTPS Proxy failed"
+    exit 1
+fi
+
+# Test 2: SMTP Status via HTTPS
+echo ""
+echo "[2] Testing SMTP Configuration via HTTPS..."
+if echo "$https_health" | grep -q '"smtp_configured":true'; then
+    echo "[OK] SMTP configured and accessible via HTTPS"
+else
+    echo "[ERROR] SMTP not configured or not accessible"
+fi
+
+# Test 3: CORS Headers
+echo ""
+echo "[3] Testing CORS Headers..."
+cors_test=$(curl -s -I https://api.dragons-at-work.de/health | grep -i "access-control")
+if [ -n "$cors_test" ]; then
+    echo "[OK] CORS headers present: $cors_test"
+else
+    echo "[WARN] CORS headers missing - add to Apache config"
+fi
+
+# Test 4: Production Mail Test  
+echo ""
+echo "[4] Testing Production Mail via HTTPS..."
+echo "WARNING: This sends real email via production API"
+read -p "Continue with production mail test? (y/N): " -n 1 -r
+echo
+
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    echo "Sending production test email..."
+    
+    prod_mail_response=$(curl -s -X POST https://api.dragons-at-work.de/v1/mail/send \
+        -H "Content-Type: application/json" \
+        -d '{
+            "name": "Production Test",
+            "email": "test@dragons-at-work.de",
+            "subject": "Production API Test - Apache Proxy Success!",
+            "message": "This email was sent via the production API at api.dragons-at-work.de through Apache proxy to Furt-Lua backend. HTTPS integration working!"
+        }')
+    
+    echo "Production Response: $prod_mail_response"
+    
+    if echo "$prod_mail_response" | grep -q '"success":true'; then
+        echo "[OK] PRODUCTION MAIL SENT VIA HTTPS!"
+        echo "Check admin@dragons-at-work.de for delivery confirmation"
+    else
+        echo "[ERROR] Production mail failed"
+    fi
+else
+    echo "Skipping production mail test"
+fi
+
+# Test 5: Security Headers
+echo ""
+echo "[5] Testing Security Headers..."
+security_headers=$(curl -s -I https://api.dragons-at-work.de/health)
+echo "Security Headers:"
+echo "$security_headers" | grep -i "x-content-type-options\|x-frame-options\|strict-transport"
+
+echo ""
+echo "Production Test Complete!"
+echo "========================"
+echo "Next: Hugo integration with https://api.dragons-at-work.de/v1/mail/send"