feat: add comprehensive management scripts for CodiMD

Add 9 management scripts to simplify CodiMD operations:
- start.sh: Start services with automatic .env setup
- stop.sh: Stop all services gracefully
- restart.sh: Restart all services
- logs.sh: View real-time logs for any service
- status.sh: Check service status and resource usage
- backup.sh: Backup database, uploads, and environment
- restore.sh: Restore from backups with interactive selection
- update.sh: Update Docker images with automatic backup
- cleanup.sh: Clean unused Docker resources

Add SCRIPTS.md with comprehensive usage documentation and examples.

Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

restore.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+# CodiMD 還原腳本
+
+set -e
+
+BACKUP_DIR="./backups"
+
+echo "🔄 CodiMD 還原腳本"
+echo ""
+
+# 列出可用的備份
+if [ ! -d "$BACKUP_DIR" ] || [ -z "$(ls -A $BACKUP_DIR/*.sql 2>/dev/null)" ]; then
+    echo "❌ 找不到備份檔案"
+    exit 1
+fi
+
+echo "📂 可用的備份："
+ls -lht "$BACKUP_DIR"/*.sql 2>/dev/null | head -10
+echo ""
+
+# 詢問要還原的備份
+read -p "請輸入要還原的備份檔案名稱 (例如: database_20260317_120000.sql): " BACKUP_FILE
+
+if [ ! -f "$BACKUP_DIR/$BACKUP_FILE" ]; then
+    echo "❌ 找不到檔案: $BACKUP_DIR/$BACKUP_FILE"
+    exit 1
+fi
+
+# 提取時間戳記
+TIMESTAMP=$(echo "$BACKUP_FILE" | sed 's/database_\(.*\).sql/\1/')
+
+echo ""
+echo "⚠️  警告：還原資料庫會覆蓋現有資料！"
+read -p "確定要還原嗎？(yes/no): " CONFIRM
+
+if [ "$CONFIRM" != "yes" ]; then
+    echo "❌ 取消還原"
+    exit 0
+fi
+
+echo ""
+echo "🔄 開始還原..."
+
+# 1. 還原資料庫
+echo "📦 還原資料庫..."
+docker-compose exec -T database psql -U codimd codimd < "$BACKUP_DIR/$BACKUP_FILE"
+
+if [ $? -eq 0 ]; then
+    echo "✅ 資料庫還原完成"
+else
+    echo "❌ 資料庫還原失敗"
+    exit 1
+fi
+
+# 2. 詢問是否還原上傳檔案
+UPLOAD_FILE="$BACKUP_DIR/uploads_$TIMESTAMP.tar.gz"
+if [ -f "$UPLOAD_FILE" ]; then
+    read -p "是否還原上傳檔案？(yes/no): " RESTORE_UPLOAD
+    if [ "$RESTORE_UPLOAD" = "yes" ]; then
+        echo "📁 還原上傳檔案..."
+        rm -rf upload-data/*
+        tar -xzf "$UPLOAD_FILE"
+        echo "✅ 上傳檔案還原完成"
+    fi
+fi
+
+# 3. 詢問是否還原環境設定
+ENV_FILE="$BACKUP_DIR/env_$TIMESTAMP.env"
+if [ -f "$ENV_FILE" ]; then
+    read -p "是否還原環境設定？(yes/no): " RESTORE_ENV
+    if [ "$RESTORE_ENV" = "yes" ]; then
+        echo "📝 還原環境設定..."
+        cp "$ENV_FILE" .env
+        echo "✅ 環境設定還原完成"
+        echo "⚠️  請執行 ./restart.sh 以套用新設定"
+    fi
+fi
+
+echo ""
+echo "✅ 還原完成！"