Add Ubuntu interactive one-click deploy; default sim mode.

Ship deploy/manage.sh toolkit for /opt/coinox, rewrite Ubuntu-only deploy docs, drop Windows deploy guidance.

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

deploy/lib/doctor.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# deploy/lib/doctor.sh — 仅检测环境/依赖,不安装
+set -e
+set -u
+if [ -n "${BASH_VERSION:-}" ]; then
+  set -o pipefail
+fi
+
+LIB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=common.sh
+source "${LIB_DIR}/common.sh"
+
+main_doctor() {
+  if root="$(resolve_repo_root 2>/dev/null)"; then
+    REPO_ROOT="${root}"
+  fi
+  doctor_report
+  echo ""
+  log "检测完成(未修改系统).需要安装请返回菜单选 1."
+}
+
+main_doctor "$@"