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-logs.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# XAUBot AI - Docker Logs Viewer
+
+set -e
+cd "$(dirname "$0")/../.."
+
+SERVICE="$1"
+LINES="${2:-100}"
+
+if [ -z "$SERVICE" ]; then
+    echo "📋 Viewing logs for all services..."
+    echo "💡 Tip: Use './docker-logs.sh SERVICE [LINES]' to view specific service"
+    echo "   Available: trading-api, dashboard, postgres, pgadmin"
+    echo ""
+    docker-compose logs -f --tail=$LINES
+else
+    echo "📋 Viewing logs for: $SERVICE (last $LINES lines)"
+    echo ""
+    docker-compose logs -f --tail=$LINES $SERVICE
+fi