refactor: reorganize project structure — consolidate Docker files, clean root

- Delete temp files: _tmp_analysis.py, nul, dashboard_screenshot.png
- Move ea/ to archive/ea/ (deprecated)
- Move 12 Docker helper scripts (.bat/.sh) to docker/scripts/
- Move 5 Docker docs to docker/docs/
- Move .env.docker.example, requirements-docker.txt to docker/
- Update all scripts with cd to project root for correct path resolution
- Update all doc references to new paths
- Update .gitignore with bot.pid, bot_output.log, *.png patterns
- Update CLAUDE.md, README.md directory trees

Root reduced from ~40 files to 12 essential files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker/scripts/docker-stop.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# XAUBot AI - Docker Stop Script
+
+set -e
+cd "$(dirname "$0")/../.."
+
+echo "🛑 Stopping XAUBot AI Docker Services..."
+echo ""
+
+# Parse arguments
+if [ "$1" == "--remove" ] || [ "$1" == "-r" ]; then
+    echo "⚠️  Stopping and removing containers..."
+    docker-compose down
+    echo "✅ Containers stopped and removed"
+elif [ "$1" == "--clean" ] || [ "$1" == "-c" ]; then
+    echo "⚠️  WARNING: This will remove all data including database!"
+    read -p "Are you sure? (yes/no): " confirm
+    if [ "$confirm" == "yes" ]; then
+        docker-compose down -v
+        echo "✅ Containers, networks, and volumes removed"
+    else
+        echo "❌ Cancelled"
+    fi
+else
+    echo "🔄 Stopping containers (data will be preserved)..."
+    docker-compose stop
+    echo "✅ Containers stopped"
+fi
+
+echo ""
+echo "📋 To restart: ./docker/scripts/docker-start.sh"
+echo ""