feat(phase-6): Complete testing and deployment setup

Testing:
- Add pytest configuration (pytest.ini)
- Add test fixtures (tests/conftest.py)
- Add ContentGenerator tests (13 tests)
- Add ContentScheduler tests (16 tests)
- Add PublisherManager tests (16 tests)
- All 45 tests passing

Production Docker:
- Add docker-compose.prod.yml with healthchecks, resource limits
- Add Dockerfile.prod with multi-stage build, non-root user
- Add nginx.prod.conf with SSL, rate limiting, security headers
- Add .env.prod.example template

Maintenance Scripts:
- Add backup.sh for database and media backups
- Add restore.sh for database restoration
- Add cleanup.sh for log rotation and Docker cleanup
- Add healthcheck.sh with Telegram alerts

Documentation:
- Add DEPLOY.md with complete deployment guide

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/maintenance/healthcheck.sh

@@ -0,0 +1,154 @@
+#!/bin/bash
+# ===========================================
+# Health Check Script for Social Media Automation
+# Run every 5 minutes via cron:
+# */5 * * * * /path/to/healthcheck.sh
+# ===========================================
+
+# Configuration
+APP_URL="${APP_URL:-http://localhost:8000}"
+TELEGRAM_BOT_TOKEN="${TELEGRAM_BOT_TOKEN:-}"
+TELEGRAM_CHAT_ID="${TELEGRAM_CHAT_ID:-}"
+ALERT_FILE="/tmp/social_automation_alert_sent"
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+log() {
+    echo -e "[$(date '+%Y-%m-%d %H:%M:%S')] $1"
+}
+
+send_telegram() {
+    if [ -n "$TELEGRAM_BOT_TOKEN" ] && [ -n "$TELEGRAM_CHAT_ID" ]; then
+        message="$1"
+        curl -s -X POST "https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage" \
+            -d "chat_id=${TELEGRAM_CHAT_ID}" \
+            -d "text=${message}" \
+            -d "parse_mode=HTML" > /dev/null 2>&1
+    fi
+}
+
+check_service() {
+    local name=$1
+    local container=$2
+
+    if docker ps --format '{{.Names}}' | grep -q "^${container}$"; then
+        echo -e "${GREEN}✓${NC} $name"
+        return 0
+    else
+        echo -e "${RED}✗${NC} $name"
+        return 1
+    fi
+}
+
+log "Running health checks..."
+
+ERRORS=0
+STATUS=""
+
+# ===========================================
+# 1. CHECK DOCKER CONTAINERS
+# ===========================================
+echo ""
+echo "Container Status:"
+
+check_service "App (FastAPI)" "social-automation-app" || ((ERRORS++))
+check_service "Worker (Celery)" "social-automation-worker" || ((ERRORS++))
+check_service "Beat (Scheduler)" "social-automation-beat" || ((ERRORS++))
+check_service "Database (PostgreSQL)" "social-automation-db" || ((ERRORS++))
+check_service "Redis" "social-automation-redis" || ((ERRORS++))
+check_service "Nginx" "social-automation-nginx" || ((ERRORS++))
+
+# ===========================================
+# 2. CHECK API HEALTH
+# ===========================================
+echo ""
+echo "API Status:"
+
+HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" "$APP_URL/api/health" 2>/dev/null || echo "000")
+
+if [ "$HTTP_CODE" = "200" ]; then
+    echo -e "${GREEN}✓${NC} API responding (HTTP $HTTP_CODE)"
+else
+    echo -e "${RED}✗${NC} API not responding (HTTP $HTTP_CODE)"
+    ((ERRORS++))
+fi
+
+# ===========================================
+# 3. CHECK DATABASE CONNECTION
+# ===========================================
+echo ""
+echo "Database Status:"
+
+if docker exec social-automation-db pg_isready -U social_user -d social_automation > /dev/null 2>&1; then
+    echo -e "${GREEN}✓${NC} PostgreSQL accepting connections"
+else
+    echo -e "${RED}✗${NC} PostgreSQL not accepting connections"
+    ((ERRORS++))
+fi
+
+# ===========================================
+# 4. CHECK REDIS
+# ===========================================
+echo ""
+echo "Redis Status:"
+
+if docker exec social-automation-redis redis-cli ping 2>/dev/null | grep -q "PONG"; then
+    echo -e "${GREEN}✓${NC} Redis responding"
+else
+    echo -e "${RED}✗${NC} Redis not responding"
+    ((ERRORS++))
+fi
+
+# ===========================================
+# 5. CHECK DISK SPACE
+# ===========================================
+echo ""
+echo "System Resources:"
+
+DISK_USAGE=$(df / | awk 'NR==2 {print $5}' | tr -d '%')
+if [ "$DISK_USAGE" -lt 90 ]; then
+    echo -e "${GREEN}✓${NC} Disk usage: ${DISK_USAGE}%"
+else
+    echo -e "${RED}✗${NC} Disk usage: ${DISK_USAGE}% (CRITICAL)"
+    ((ERRORS++))
+fi
+
+# Memory
+MEM_USAGE=$(free | awk 'NR==2 {printf "%.0f", $3/$2*100}')
+if [ "$MEM_USAGE" -lt 90 ]; then
+    echo -e "${GREEN}✓${NC} Memory usage: ${MEM_USAGE}%"
+else
+    echo -e "${YELLOW}!${NC} Memory usage: ${MEM_USAGE}% (HIGH)"
+fi
+
+# ===========================================
+# 6. SUMMARY & ALERTS
+# ===========================================
+echo ""
+echo "─────────────────────────────────────────"
+
+if [ $ERRORS -eq 0 ]; then
+    echo -e "${GREEN}All systems operational${NC}"
+
+    # Clear alert file if exists (system recovered)
+    if [ -f "$ALERT_FILE" ]; then
+        rm "$ALERT_FILE"
+        send_telegram "✅ <b>Social Media Automation - RECOVERED</b>%0A%0AAll systems are back to normal."
+    fi
+else
+    echo -e "${RED}$ERRORS error(s) detected${NC}"
+
+    # Send alert only if not already sent
+    if [ ! -f "$ALERT_FILE" ]; then
+        touch "$ALERT_FILE"
+        send_telegram "🚨 <b>Social Media Automation - ALERT</b>%0A%0A$ERRORS service(s) are down!%0ACheck server immediately."
+    fi
+fi
+
+echo "─────────────────────────────────────────"
+
+exit $ERRORS