Migrate from file-based configs to database with per-IP site configuration

Major architectural changes:
   - Replace YAML config files with database-stored ScanConfig model
   - Remove CIDR block support in favor of individual IP addresses per site
   - Each IP now has its own expected_ping, expected_tcp_ports, expected_udp_ports
   - AlertRule now uses config_id FK instead of config_file string

   API changes:
   - POST /api/scans now requires config_id instead of config_file
   - Alert rules API uses config_id with validation
   - All config dropdowns fetch from /api/configs dynamically

   Template updates:
   - scans.html, dashboard.html, alert_rules.html load configs via API
   - Display format: Config Title (X sites) in dropdowns
   - Removed Jinja2 config_files loops

   Migrations:
   - 008: Expand CIDRs to individual IPs with per-IP port configs
   - 009: Remove CIDR-related columns
   - 010: Add config_id to alert_rules, remove config_file

destroy_everything.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# SneakyScan Fresh Start Script
+# This script removes all data, configs, and scan output for a clean slate
+
+set -e
+
+# Check for root/sudo access
+if [ "$EUID" -ne 0 ]; then
+    echo "============================================"
+    echo "  ERROR: Root access required"
+    echo "============================================"
+    echo ""
+    echo "This script needs to run with sudo because"
+    echo "Docker creates files with root ownership."
+    echo ""
+    echo "Please run:"
+    echo "  sudo ./destroy_everything.sh"
+    echo ""
+    exit 1
+fi
+
+echo "============================================"
+echo "  SneakyScan Fresh Start - DESTROY EVERYTHING"
+echo "============================================"
+echo ""
+echo "This will remove:"
+echo "  - All database files in ./data/"
+echo "  - All config files in ./configs/"
+echo "  - All scan outputs in ./output/"
+echo ""
+read -p "Are you sure you want to continue? (yes/no): " -r
+echo ""
+
+if [[ ! $REPLY =~ ^[Yy][Ee][Ss]$ ]]; then
+    echo "Aborted."
+    exit 0
+fi
+
+echo "Starting cleanup..."
+echo ""
+
+# Clean data directory (database files)
+if [ -d "data" ]; then
+    echo "Cleaning data directory..."
+    rm -rfv data/*
+    echo "   Data directory cleaned"
+else
+    echo "  <20> Data directory not found"
+fi
+
+# Clean configs directory
+if [ -d "configs" ]; then
+    echo "Cleaning configs directory..."
+    rm -rfv configs/*
+    echo "   Configs directory cleaned"
+else
+    echo "  <20> Configs directory not found"
+fi
+
+# Clean output directory (scan results)
+if [ -d "output" ]; then
+    echo "Cleaning output directory..."
+    rm -rfv output/*
+    echo "   Output directory cleaned"
+else
+    echo "  <20> Output directory not found"
+fi
+
+echo ""
+echo "============================================"
+echo "  Fresh start complete! All data removed."
+echo "============================================"