Add V2 phase six verification assets

ai_knowledge_base_v2/scripts/mysql_backup.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BACKUP_DIR="${BACKUP_DIR:-./backups}"
+MYSQL_HOST="${MYSQL_HOST:-127.0.0.1}"
+MYSQL_PORT="${MYSQL_PORT:-3307}"
+MYSQL_USER="${MYSQL_USER:-ai_kb}"
+MYSQL_PASSWORD="${MYSQL_PASSWORD:-ai_kb}"
+MYSQL_DATABASE="${MYSQL_DATABASE:-ai_knowledge_base_v2}"
+
+mkdir -p "$BACKUP_DIR"
+OUTPUT_FILE="$BACKUP_DIR/${MYSQL_DATABASE}_$(date +%Y%m%d_%H%M%S).sql"
+
+mysqldump \
+  -h "$MYSQL_HOST" \
+  -P "$MYSQL_PORT" \
+  -u "$MYSQL_USER" \
+  -p"$MYSQL_PASSWORD" \
+  --single-transaction \
+  --routines \
+  --triggers \
+  "$MYSQL_DATABASE" > "$OUTPUT_FILE"
+
+echo "备份完成：$OUTPUT_FILE"