fix(deploy): auto-remove legacy Compose MySQL containers on upgrade

Run uninstall-mysql-compose before install/upgrade and pass --remove-orphans so nexus-prod mysql orphans are stopped after the service is dropped from compose.

Co-authored-by: Cursor <cursoragent@cursor.com>

deploy/nexus-1panel.sh

@@ -537,12 +537,26 @@ write_env_prod() {
     info "已写入 $env_file"
 }
 
+purge_legacy_bundled_services() {
+    local root="$1"
+    local s
+    for s in \
+        "$root/deploy/uninstall-mysql-compose.sh" \
+        "$root/deploy/uninstall-redis-compose.sh"; do
+        if [[ -x "$s" ]]; then
+            step "清理遗留 Compose 内置服务: $(basename "$s")"
+            NEXUS_ROOT="$root" bash "$s" || true
+        fi
+    done
+}
+
 compose_up() {
     local root="$1"
     save_host_profile "$root"
+    purge_legacy_bundled_services "$root"
     info "档位: ${NEXUS_PROFILE}（仅 Nexus 容器；MySQL/Redis 请自行安装）"
     info "构建并启动（首次约 10～20 分钟）..."
-    compose_cmd "$root" up -d --build
+    compose_cmd "$root" up -d --build --remove-orphans
 }
 
 verify_install_wizard() {
@@ -772,8 +786,9 @@ cmd_upgrade() {
     git_upgrade
     apply_pool_to_env_prod "$NEXUS_ROOT" "$(profile_env_file "$NEXUS_ROOT")"
     save_host_profile "$NEXUS_ROOT"
-    step "重建容器..."
-    compose_cmd "$NEXUS_ROOT" up -d --build
+    purge_legacy_bundled_services "$NEXUS_ROOT"
+    step "重建容器（--remove-orphans 清理旧 mysql/redis）..."
+    compose_cmd "$NEXUS_ROOT" up -d --build --remove-orphans
     if [[ "$PRUNE_IMAGES" == true ]]; then
         docker image prune -f >/dev/null 2>&1 || true
     fi