// Password vault workbench runtime — dedicated /vault CRUD UI.
// Refresh model: command-result re-fetch only; no setInterval.
(function initVaultWorkbenchRuntime() {
  if (window.__mnoteVaultWorkbenchStarted) return;
  window.__mnoteVaultWorkbenchStarted = true;

  function qs(sel, root) {
    return (root || document).querySelector(sel);
  }
  function qsa(sel, root) {
    return Array.prototype.slice.call((root || document).querySelectorAll(sel));
  }

  function toast(message, kind) {
    if (window.mnote && typeof window.mnote.toast === 'function') {
      window.mnote.toast(message, { kind: kind || 'info' });
      return;
    }
    console.log('[vault]', kind || 'info', message);
  }

  function readRootUri(root) {
    var fromData = root.getAttribute('data-root-uri') || '';
    if (fromData) return fromData;
    var body = document.body && document.body.getAttribute('data-mnote-root-uri');
    return body || '';
  }

  function apiUrl(path, rootUri, extra) {
    var url = new URL(path, window.location.origin);
    if (rootUri) url.searchParams.set('rootUri', rootUri);
    url.searchParams.set('sourceKind', 'local_folder');
    if (extra) {
      Object.keys(extra).forEach(function (key) {
        if (extra[key] != null && extra[key] !== '') {
          url.searchParams.set(key, extra[key]);
        }
      });
    }
    return url.toString();
  }

  async function apiJson(method, path, rootUri, body, queryExtra) {
    var opts = {
      method: method,
      credentials: 'same-origin',
      headers: { Accept: 'application/json' },
    };
    var url = path;
    if (method === 'GET' || method === 'DELETE') {
      url = apiUrl(path, rootUri, queryExtra);
    } else {
      opts.headers['Content-Type'] = 'application/json';
      var payload = Object.assign({ rootUri: rootUri, sourceKind: 'local_folder' }, body || {});
      opts.body = JSON.stringify(payload);
      if (queryExtra) {
        url = apiUrl(path, rootUri, queryExtra);
      }
    }
    var res = await fetch(url, opts);
    var data = null;
    try {
      data = await res.json();
    } catch (_e) {
      data = null;
    }
    if (!res.ok || (data && data.ok === false)) {
      var code = (data && (data.code || (data.error && data.error.code))) || res.status;
      var msg =
        (data && (data.message || data.error || (data.error && data.error.message))) ||
        ('请求失败 ' + res.status);
      if (typeof msg === 'object') msg = JSON.stringify(msg);
      var err = new Error(String(msg));
      err.code = code;
      err.status = res.status;
      err.payload = data;
      throw err;
    }
    return data && data.result != null ? data.result : data;
  }

  function escapeHtml(text) {
    return String(text == null ? '' : text)
      .replace(/&/g, '&')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#39;');
  }

  /**
   * Display label for a secret field state. Always HTML-escaped so callers can
   * safely inject into innerHTML (revealed values may contain user-controlled text).
   */
  function maskLabel(secretState) {
    if (!secretState || secretState.state === 'absent') return '（无）';
    if (secretState.state === 'masked') return '••••••••';
    if (secretState.state === 'revealed') return escapeHtml(secretState.value || '');
    return '••••••••';
  }

  /**
   * Optional reusable secret-row helper. Prefer bindWorkbench's secretRow for
   * production paths; this stays fail-safe if called with uiState in opts.
   * @param {object} [opts.uiState] workbench state with revealed / _revealedValues
   */
  function renderSecretRow(field, secretState, accountId, secretId, showEmpty, opts) {
    opts = opts || {};
    var uiState = opts.uiState || { revealed: {}, _revealedValues: {} };
    var revealed = uiState.revealed || {};
    var revealedValues = uiState._revealedValues || {};
    var key = opts.secretId || secretId || field || '';
    var has = secretState && secretState.state === 'masked';
    var canReveal = has || (secretState && secretState.state === 'revealed');
    if (!canReveal && !showEmpty) return '';

    var isOpen = !!revealed[key];
    var shown = isOpen
      ? (revealedValues[key] != null
          ? escapeHtml(revealedValues[key])
          : maskLabel(secretState))
      : maskLabel(secretState);

    var revealBtn = isOpen ? '隐藏' : '显示';
    var copyBtn =
      '<button type="button" data-vault-copy-secret="" data-testid="vault-secret-' +
      escapeHtml(key) +
      '">复制</button>';
    var actions =
      '<button type="button" data-vault-reveal="" data-vault-secret-id="' +
      escapeHtml(secretId || '') +
      '" data-testid="vault-reveal-' +
      escapeHtml(key) +
      '">' +
      revealBtn +
      '</button>' +
      copyBtn;

    return (
      '<div class="mnote-vault-field-row" data-vault-secret-row="' +
      escapeHtml(key) +
      '">' +
      '<div class="mnote-vault-secret-value" data-testid="vault-secret-' +
      escapeHtml(key) +
      '">' +
      shown +
      '</div>' +
      '<div class="mnote-vault-secret-actions">' +
      actions +
      '</div>' +
      '</div>'
    );
  }

  function bindWorkbench(root) {
    if (!(root instanceof HTMLElement) || root.getAttribute('data-vault-bound') === '1') {
      return;
    }
    root.setAttribute('data-vault-bound', '1');

    var state = {
      rootUri: readRootUri(root),
      status: root.getAttribute('data-status') || 'active',
      items: [],
      selectedId: root.getAttribute('data-selected-id') || '',
      item: null,
      dirty: false,
      revealed: { password: false, apikey: false, token: false },
      secretDraft: { password: null, apikey: null, token: null },
      mode: 'view', // view | create | edit | cipher
      /** @type {Record<string, boolean>} collapsed folder paths (true = collapsed) */
      collapsedFolders: {},
      cipherKeys: [],
      cipherRevealed: {},
      /** @type {HTMLInputElement|HTMLTextAreaElement|null} 编辑表单中最近一次可插入密文的输入框 */
      lastCipherInsertTarget: null,
      /** @type {{ start: number, end: number }|null} 失焦前光标，避免点下拉后丢失 */
      lastCipherInsertRange: null,
      isAiVault: false,
      aiVaultActorId: 'mnote-e2e',
      vaultRole: 'user',
      showEmptyFields: false,
      /**
       * Edit/create form UI chrome that must survive reRenderFormKeepingSlots
       * and view-mode renderDetail (password/appendix reveal re-renders).
       * Without this, appendix-secret panels always re-mount collapsed.
       * @type {{ openAccountIds: Record<string, boolean>, expandedSecretPanels: Record<string, boolean> }}
       */
      _formUi: { openAccountIds: {}, expandedSecretPanels: {} },
    };

    function ensureFormUi() {
      if (!state._formUi) {
        state._formUi = {
          openAccountIds: {},
          expandedSecretPanels: {},
          folderPickerOpen: {},
        };
      }
      if (!state._formUi.openAccountIds) state._formUi.openAccountIds = {};
      if (!state._formUi.expandedSecretPanels) {
        state._formUi.expandedSecretPanels = {};
      }
      if (!state._formUi.folderPickerOpen) state._formUi.folderPickerOpen = {};
      return state._formUi;
    }

    /** Account key for UI chrome (open group / appendix panel). */
    function accountUiKey(accId, idx) {
      if (accId != null && String(accId) !== '') return String(accId);
      if (idx != null) return 'idx:' + String(idx);
      return 'default';
    }

    function isSecretsPanelExpanded(accKey) {
      var ui = ensureFormUi();
      return !!ui.expandedSecretPanels[accKey];
    }

    function setSecretsPanelExpanded(accKey, expanded) {
      if (!accKey) return;
      ensureFormUi().expandedSecretPanels[accKey] = !!expanded;
    }

    /**
     * Build appendix-secrets panel markup; honors expanded state so reveal/hide
     * re-renders do not collapse an already-open panel.
     */
    function renderSecretsPanelHtml(opts) {
      opts = opts || {};
      var accKey = opts.accKey || 'default';
      var title = opts.title || '附录密钥';
      var count = opts.count || 0;
      var bodyHtml = opts.bodyHtml || '';
      var extraAttrs = opts.extraAttrs || '';
      var headExtra = opts.headExtra || '';
      var expanded = isSecretsPanelExpanded(accKey);
      return (
        '<div class="mnote-vault-account-secrets' +
        (expanded ? '' : ' is-collapsed') +
        '" data-vault-secrets-panel data-vault-secrets-acc="' +
        escapeHtml(accKey) +
        '"' +
        extraAttrs +
        '>' +
        '<div class="mnote-vault-account-secrets-head">' +
        '<button type="button" class="mnote-vault-secrets-toggle" data-vault-toggle-secrets aria-expanded="' +
        (expanded ? 'true' : 'false') +
        '">' +
        '<span class="mnote-vault-secrets-chevron" aria-hidden="true">' +
        (expanded ? '▼' : '▶') +
        '</span>' +
        '<span>' +
        escapeHtml(title) +
        '</span>' +
        (count
          ? '<span class="mnote-vault-secrets-count">(' + count + ')</span>'
          : '') +
        '</button>' +
        headExtra +
        '</div>' +
        '<div class="mnote-vault-account-secrets-body"' +
        (expanded ? '' : ' hidden') +
        '>' +
        bodyHtml +
        '</div>' +
        '</div>'
      );
    }

    var listEl = qs('[data-vault-list]', root);
    var detailEl = qs('[data-vault-detail]', root);
    var statusEl = qs('[data-vault-status]', root);
    var searchEl = qs('[data-vault-search]', root);
    var tabActive = qs('[data-vault-tab="active"]', root);
    var tabDeleted = qs('[data-vault-tab="deleted"]', root);

    // 折叠态：localStorage（同 origin 多窗 / 未来桌面多窗共享）+ BroadcastChannel 即时同步。
    // 与页面树 view-state 同思路的「本机 UI 状态」层；暂不写 control-plane。
    var VAULT_COLLAPSE_LEGACY_SESSION_KEY = 'mnote.vault.collapsedFolders';
    var VAULT_COLLAPSE_SCHEMA = 1;
    var collapseUpdatedAtMs = 0;
    var collapseBroadcast = null;
    var collapseStorageKey = vaultCollapseStorageKey(state.rootUri);

    function vaultCollapseStorageKey(rootUri) {
      var raw = String(rootUri || '').trim() || 'default';
      var hash = 0;
      for (var i = 0; i < raw.length; i++) {
        hash = (hash * 31 + raw.charCodeAt(i)) | 0;
      }
      return (
        'mnote.vault.collapsedFolders.v1:' +
        (hash >>> 0).toString(16) +
        ':' +
        encodeURIComponent(raw.slice(0, 120))
      );
    }

    function normalizeCollapseMap(raw) {
      var out = {};
      if (!raw || typeof raw !== 'object' || Array.isArray(raw)) return out;
      Object.keys(raw).forEach(function (k) {
        out[k] = !!raw[k];
      });
      return out;
    }

    function parseCollapsePayload(raw) {
      if (!raw) return null;
      try {
        var parsed = typeof raw === 'string' ? JSON.parse(raw) : raw;
        if (!parsed || typeof parsed !== 'object') return null;
        // v1 envelope: { schemaVersion, updatedAtMs, collapsed }
        if (parsed.collapsed && typeof parsed.collapsed === 'object') {
          return {
            schemaVersion: Number(parsed.schemaVersion) || VAULT_COLLAPSE_SCHEMA,
            updatedAtMs: Number(parsed.updatedAtMs) || 0,
            collapsed: normalizeCollapseMap(parsed.collapsed),
          };
        }
        // legacy flat map { path: boolean }
        return {
          schemaVersion: VAULT_COLLAPSE_SCHEMA,
          updatedAtMs: 0,
          collapsed: normalizeCollapseMap(parsed),
        };
      } catch (_e) {
        return null;
      }
    }

    function serializeCollapsePayload() {
      return JSON.stringify({
        schemaVersion: VAULT_COLLAPSE_SCHEMA,
        updatedAtMs: collapseUpdatedAtMs || Date.now(),
        collapsed: state.collapsedFolders || {},
      });
    }

    function loadCollapseState() {
      var fromLocal = null;
      try {
        if (window.localStorage) {
          fromLocal = parseCollapsePayload(window.localStorage.getItem(collapseStorageKey));
        }
      } catch (_e) {
        fromLocal = null;
      }
      // 一次性迁移：同 tab 旧 sessionStorage → localStorage
      var fromSession = null;
      try {
        if (window.sessionStorage) {
          fromSession = parseCollapsePayload(
            window.sessionStorage.getItem(VAULT_COLLAPSE_LEGACY_SESSION_KEY)
          );
        }
      } catch (_e) {
        fromSession = null;
      }
      var chosen = fromLocal;
      if (fromSession && (!chosen || (fromSession.updatedAtMs || 0) >= (chosen.updatedAtMs || 0))) {
        // 无 local 或 session 更新时间不落后时：优先有数据的一份；二者都无时间戳时若 local 空则用 session
        if (!chosen || !Object.keys(chosen.collapsed || {}).length) {
          chosen = fromSession;
        }
      }
      if (chosen) {
        state.collapsedFolders = chosen.collapsed || {};
        collapseUpdatedAtMs = chosen.updatedAtMs || Date.now();
      } else {
        state.collapsedFolders = {};
        collapseUpdatedAtMs = 0;
      }
      // 若只从 session 迁过来，立刻落到 localStorage（不广播，避免冷启动风暴）
      if (fromSession && Object.keys(fromSession.collapsed || {}).length) {
        try {
          if (window.sessionStorage) {
            window.sessionStorage.removeItem(VAULT_COLLAPSE_LEGACY_SESSION_KEY);
          }
        } catch (_e2) {
          /* ignore */
        }
        if (!fromLocal || !Object.keys(fromLocal.collapsed || {}).length) {
          collapseUpdatedAtMs = collapseUpdatedAtMs || Date.now();
          try {
            if (window.localStorage) {
              window.localStorage.setItem(collapseStorageKey, serializeCollapsePayload());
            }
          } catch (_e3) {
            /* ignore */
          }
        }
      }
    }

    function applyRemoteCollapsePayload(payload, source) {
      if (!payload || !payload.collapsed) return false;
      var remoteTs = Number(payload.updatedAtMs) || 0;
      // LWW：远程更旧则忽略（含本窗 storage 回声时用 updatedAt 防抖）
      if (remoteTs && collapseUpdatedAtMs && remoteTs < collapseUpdatedAtMs) {
        return false;
      }
      var next = normalizeCollapseMap(payload.collapsed);
      var prev = state.collapsedFolders || {};
      var same =
        Object.keys(next).length === Object.keys(prev).length &&
        Object.keys(next).every(function (k) {
          return prev[k] === next[k];
        });
      if (same && remoteTs <= collapseUpdatedAtMs) return false;
      state.collapsedFolders = next;
      collapseUpdatedAtMs = remoteTs || Date.now();
      if (source !== 'localStorage-echo') {
        // storage 事件来自其他窗已写好 localStorage，无需再写
      }
      return true;
    }

    function persistCollapse(options) {
      options = options || {};
      collapseUpdatedAtMs = Date.now();
      var payload = {
        schemaVersion: VAULT_COLLAPSE_SCHEMA,
        updatedAtMs: collapseUpdatedAtMs,
        collapsed: state.collapsedFolders || {},
      };
      var raw = JSON.stringify(payload);
      try {
        if (window.localStorage) {
          window.localStorage.setItem(collapseStorageKey, raw);
        }
      } catch (_e) {
        /* ignore */
      }
      // 同 origin 其他窗：BroadcastChannel 即时；无 BC 时靠 storage 事件
      if (options.broadcast !== false && collapseBroadcast) {
        try {
          collapseBroadcast.postMessage({
            type: 'vault.collapse.changed',
            storageKey: collapseStorageKey,
            payload: payload,
          });
        } catch (_e2) {
          /* ignore */
        }
      }
    }

    function onCollapseSyncMessage(payload, source) {
      if (applyRemoteCollapsePayload(payload, source)) {
        // 列表已渲染时跟着重画；boot 前 renderList 可能尚不可用
        if (typeof renderList === 'function') {
          try {
            renderList();
          } catch (_e) {
            /* ignore */
          }
        }
      }
    }

    function installCollapseSync() {
      try {
        if (typeof BroadcastChannel !== 'undefined') {
          collapseBroadcast = new BroadcastChannel('mnote.vault.collapse.v1');
          collapseBroadcast.onmessage = function (ev) {
            var data = ev && ev.data;
            if (!data || data.type !== 'vault.collapse.changed') return;
            if (data.storageKey && data.storageKey !== collapseStorageKey) return;
            onCollapseSyncMessage(data.payload, 'broadcast');
          };
        }
      } catch (_e) {
        collapseBroadcast = null;
      }
      // 跨窗 localStorage 变更（BroadcastChannel 不可用或 Electron 分区差异时的托底）
      window.addEventListener('storage', function (ev) {
        if (!ev || ev.key !== collapseStorageKey || ev.storageArea !== window.localStorage) {
          return;
        }
        var remote = parseCollapsePayload(ev.newValue);
        if (remote) onCollapseSyncMessage(remote, 'storage');
      });
    }

    loadCollapseState();
    installCollapseSync();

    /**
     * Collapse state: only keys present in collapsedFolders are explicit.
     * 默认全部折叠（文件夹 + 同 URL 多账号组）；用户点开后写入 localStorage 并跨窗同步。
     * 旧版「未记录 = 展开」会让大分组（如「倍特」14 条）一进来铺满左栏。
     */
    function isCollapsedKey(key) {
      if (Object.prototype.hasOwnProperty.call(state.collapsedFolders, key)) {
        return !!state.collapsedFolders[key];
      }
      return true;
    }

    function toggleCollapseKey(key) {
      state.collapsedFolders[key] = !isCollapsedKey(key);
      persistCollapse({ broadcast: true });
    }

    /** Normalize folderPath for save; groups appear in the list only after an entry uses them. */
    function normalizeFolderPath(raw) {
      var fp = String(raw || '')
        .trim()
        .replace(/\\/g, '/')
        .replace(/\/+/g, '/')
        .replace(/^\/+|\/+$/g, '');
      if (!fp) return '';
      var parts = fp.split('/').filter(function (p) {
        return p && p !== '.' && p !== '..';
      });
      return parts.join('/');
    }

    function isNotesEmpty(notes) {
      var t = String(notes || '')
        .replace(/^#+\s*Notes\s*/i, '')
        .trim();
      return !t;
    }

    function itemIsSharedToAi(item) {
      return !!(item && (item.isSharedToAi || item.sharedToAi));
    }

    function itemIsAiCopy(item) {
      return !!(item && (item.isAiSharedCopy || item.sharedFrom ||
        ((item.tags || []).indexOf('ai-shared') >= 0)));
    }

    function updateHeaderChrome() {
      var titleEl = qs('.mnote-vault-header h1', root);
      var badge = qs('[data-vault-role-badge]', root);
      if (titleEl) {
        titleEl.textContent = state.isAiVault ? 'AI 密码本' : '密码箱';
      }
      if (!badge) {
        var main = qs('.mnote-vault-header-main', root);
        if (main) {
          badge = document.createElement('span');
          badge.setAttribute('data-vault-role-badge', '1');
          badge.className = 'mnote-vault-role-badge';
          main.appendChild(badge);
        }
      }
      if (badge) {
        if (state.isAiVault) {
          badge.hidden = false;
          badge.textContent = 'AI 专用 · ' + (state.aiVaultActorId || 'mnote-e2e');
          badge.classList.add('is-ai');
        } else {
          badge.hidden = true;
          badge.classList.remove('is-ai');
        }
      }
      var repairBtn = qs('[data-vault-repair-ai-folders]', root);
      if (repairBtn) {
        repairBtn.hidden = !state.isAiVault;
      }
      root.setAttribute('data-vault-role', state.isAiVault ? 'ai' : 'user');
    }

    function setStatus(message, type) {
      if (!statusEl) return;
      statusEl.textContent = message || '';
      statusEl.setAttribute('data-type', type || 'info');
    }

    async function confirmDiscard() {
      if (!state.dirty) return true;
      return await window.mnote.confirm('有未保存的修改，确定放弃？');
    }

    function filteredItems() {
      var q = searchEl && searchEl.value ? String(searchEl.value).trim().toLowerCase() : '';
      if (!q) return state.items.slice();
      return state.items.filter(function (item) {
        var hay = [
          item.title,
          item.url,
          (item.urls || []).join(' '),
          item.username,
          item.email,
          item.passwordHint,
          item.folderPath,
          (item.tags || []).join(' '),
        ]
          .filter(Boolean)
          .join(' ')
          .toLowerCase();
        return hay.indexOf(q) >= 0;
      });
    }

    /** Build nested folder tree from folderPath (a/b/c). Only paths that have entries. */
    function buildFolderTree(items) {
      var treeRoot = { name: '', path: '', children: {}, items: [] };
      items.forEach(function (item) {
        var fp = (item.folderPath || '').trim();
        if (!fp) {
          treeRoot.items.push(item);
          return;
        }
        var parts = fp.split('/').filter(Boolean);
        var node = treeRoot;
        var acc = [];
        parts.forEach(function (part) {
          acc.push(part);
          var p = acc.join('/');
          if (!node.children[part]) {
            node.children[part] = { name: part, path: p, children: {}, items: [] };
          }
          node = node.children[part];
        });
        node.items.push(item);
      });
      return treeRoot;
    }

    function renderItemButton(item) {
      var active = item.id === state.selectedId ? ' is-active' : '';
      var accN = item.accountCount || 0;
      var secN = item.secretCount || 0;
      var metaParts = [item.username || item.email || ''];
      if (accN > 1) metaParts.push(accN + ' 账号');
      if (secN > 0) metaParts.push(secN + ' 密钥');
      var meta = metaParts.filter(Boolean).join(' · ');
      // Single-row compact: title · meta | status glyphs only (no badge rows).
      var icons = '';
      if (itemIsSharedToAi(item) && !state.isAiVault) {
        icons +=
          '<span class="mnote-vault-list-icon is-shared" title="已共享到 AI 密码本" aria-label="已共享">↗</span>';
      }
      if (itemIsAiCopy(item)) {
        icons +=
          '<span class="mnote-vault-list-icon is-ai" title="AI 密码本副本" aria-label="AI 副本">◆</span>';
      }
      return (
        '<button type="button" class="mnote-vault-list-item' +
        active +
        (itemIsSharedToAi(item) ? ' is-shared-ai' : '') +
        (itemIsAiCopy(item) ? ' is-ai-copy' : '') +
        '" data-vault-item-id="' +
        escapeHtml(item.id) +
        '" data-testid="vault-list-item">' +
        '<span class="mnote-vault-list-main">' +
        '<span class="mnote-vault-list-title">' +
        escapeHtml(item.title || '(无标题)') +
        '</span>' +
        (meta
          ? '<span class="mnote-vault-list-meta">' + escapeHtml(meta) + '</span>'
          : '') +
        '</span>' +
        (icons ? '<span class="mnote-vault-list-icons">' + icons + '</span>' : '') +
        '</button>'
      );
    }

    function countNodeItems(node) {
      var n = node.items.length;
      Object.keys(node.children).forEach(function (k) {
        n += countNodeItems(node.children[k]);
      });
      return n;
    }

    /** Group items sharing the same non-empty URL into a collapsible site node. */
    function renderItemsWithUrlGroups(items, depth, folderPath) {
      var html = '';
      var byUrl = {};
      var noUrl = [];
      items.forEach(function (item) {
        var u = (item.url || '').trim();
        if (!u) {
          noUrl.push(item);
          return;
        }
        if (!byUrl[u]) byUrl[u] = [];
        byUrl[u].push(item);
      });
      // Collapsible site group only when 2+ accounts share the URL.
      Object.keys(byUrl)
        .sort(function (a, b) {
          return a.localeCompare(b, 'zh');
        })
        .forEach(function (url) {
          var group = byUrl[url];
          if (group.length < 2) {
            noUrl.push(group[0]);
            return;
          }
          var siteKey = 'url:' + (folderPath || '') + '|' + url;
          var collapsed = isCollapsedKey(siteKey);
          var label = shortenUrlLabel(url);
          html +=
            '<div class="mnote-vault-folder mnote-vault-site-group" style="--vault-depth:' +
            depth +
            '" data-vault-folder-path="' +
            escapeHtml(siteKey) +
            '">' +
            '<button type="button" class="mnote-vault-folder-toggle mnote-vault-site-toggle' +
            (collapsed ? ' is-collapsed' : '') +
            '" data-vault-toggle-folder="' +
            escapeHtml(siteKey) +
            '" aria-expanded="' +
            (collapsed ? 'false' : 'true') +
            '" title="' +
            escapeHtml(url) +
            '">' +
            '<span class="mnote-vault-folder-chevron" aria-hidden="true">' +
            (collapsed ? '▸' : '▾') +
            '</span>' +
            '<span class="mnote-vault-folder-name">🔗 ' +
            escapeHtml(label) +
            '</span>' +
            '<span class="mnote-vault-folder-count">' +
            group.length +
            ' 账号</span>' +
            '</button>';
          if (!collapsed) {
            html += '<div class="mnote-vault-folder-body">';
            group
              .slice()
              .sort(function (a, b) {
                var ua = String(a.username || a.title || '');
                var ub = String(b.username || b.title || '');
                return ua.localeCompare(ub, 'zh');
              })
              .forEach(function (item) {
                html +=
                  '<div class="mnote-vault-list-item-wrap" style="--vault-depth:' +
                  (depth + 1) +
                  '">' +
                  renderItemButton(item) +
                  '</div>';
              });
            html += '</div>';
          }
          html += '</div>';
        });
      noUrl
        .slice()
        .sort(function (a, b) {
          return String(a.title || '').localeCompare(String(b.title || ''), 'zh');
        })
        .forEach(function (item) {
          html +=
            '<div class="mnote-vault-list-item-wrap" style="--vault-depth:' +
            depth +
            '">' +
            renderItemButton(item) +
            '</div>';
        });
      return html;
    }

    function shortenUrlLabel(url) {
      try {
        var u = new URL(url.indexOf('://') >= 0 ? url : 'https://' + url);
        return u.host + (u.pathname && u.pathname !== '/' ? u.pathname : '');
      } catch (_e) {
        return url.length > 40 ? url.slice(0, 37) + '…' : url;
      }
    }

    function renderTreeNode(node, depth) {
      var html = '';
      var childKeys = Object.keys(node.children).sort(function (a, b) {
        return a.localeCompare(b, 'zh');
      });
      childKeys.forEach(function (key) {
        var child = node.children[key];
        // 只有一个直连凭证的叶子分组会在左栏重复同名标签，直接展平。
        if (child.items.length === 1 && Object.keys(child.children).length === 0) {
          html +=
            '<div class="mnote-vault-list-item-wrap" style="--vault-depth:' +
            depth +
            '">' +
            renderItemButton(child.items[0]) +
            '</div>';
          return;
        }
        var collapsed = isCollapsedKey(child.path);
        var count = countNodeItems(child);
        html +=
          '<div class="mnote-vault-folder" style="--vault-depth:' +
          depth +
          '" data-vault-folder-path="' +
          escapeHtml(child.path) +
          '">' +
          '<button type="button" class="mnote-vault-folder-toggle' +
          (collapsed ? ' is-collapsed' : '') +
          '" data-vault-toggle-folder="' +
          escapeHtml(child.path) +
          '" aria-expanded="' +
          (collapsed ? 'false' : 'true') +
          '">' +
          '<span class="mnote-vault-folder-chevron" aria-hidden="true">' +
          (collapsed ? '▸' : '▾') +
          '</span>' +
          '<span class="mnote-vault-folder-name">' +
          escapeHtml(child.name) +
          '</span>' +
          '<span class="mnote-vault-folder-count">' +
          count +
          '</span>' +
          '</button>';
        if (!collapsed) {
          html += '<div class="mnote-vault-folder-body">';
          html += renderTreeNode(child, depth + 1);
          html += renderItemsWithUrlGroups(child.items, depth + 1, child.path);
          html += '</div>';
        }
        html += '</div>';
      });
      return html;
    }

    function renderList() {
      if (!listEl) return;
      var items = filteredItems();
      if (!items.length) {
        listEl.innerHTML =
          '<div class="mnote-vault-empty" data-testid="vault-list-empty">暂无条目。点击「新建」添加。</div>';
        return;
      }
      var tree = buildFolderTree(items);
      var html = '';
      // Root (ungrouped) items first — also group by same URL
      if (tree.items.length) {
        html +=
          '<div class="mnote-vault-folder mnote-vault-folder--root" data-vault-folder-path="">' +
          '<div class="mnote-vault-folder-label">未分组</div>' +
          '<div class="mnote-vault-folder-body">' +
          renderItemsWithUrlGroups(tree.items, 0, '') +
          '</div></div>';
      }
      html += renderTreeNode(tree, 0);
      listEl.innerHTML = html;
    }

    /** Ordered unique URLs from item (primary first); supports legacy single `url`. */
    function normalizeUrlsFromItem(item) {
      var out = [];
      function push(u) {
        var t = String(u || '').trim();
        if (!t) return;
        if (out.indexOf(t) >= 0) return;
        out.push(t);
      }
      if (item && Array.isArray(item.urls) && item.urls.length) {
        item.urls.forEach(push);
      }
      if (item && item.url) push(item.url);
      // Prefer primary url first when both present and order disagrees.
      if (item && item.url && out.length) {
        var primary = String(item.url).trim();
        if (primary && out[0] !== primary && out.indexOf(primary) >= 0) {
          out = [primary].concat(
            out.filter(function (u) {
              return u !== primary;
            })
          );
        }
      }
      return out;
    }

    /**
     * URLs for the edit form: keep empty draft rows (so "+ 网址" can add a blank
     * line). normalizeUrlsFromItem strips empties and would make add-url look dead.
     */
    function urlsForFormEditor(item) {
      if (item && Array.isArray(item.urls) && item.urls.length) {
        return item.urls.map(function (u) {
          return u == null ? '' : String(u);
        });
      }
      var urls = normalizeUrlsFromItem(item);
      if (!urls.length) urls = [''];
      return urls;
    }

    /** Make a safe absolute href for external open (http/https only). */
    function externalUrlHref(raw) {
      var t = String(raw || '').trim();
      if (!t) return '';
      if (/^https?:\/\//i.test(t)) return t;
      if (/^\/\//.test(t)) return 'https:' + t;
      // Bare host/path: assume https (common for vault entries).
      if (/^[a-z0-9][a-z0-9.-]*\.[a-z]{2,}([/:].*)?$/i.test(t)) {
        return 'https://' + t;
      }
      return '';
    }

    /** View-mode URL as hyperlink look; open only via Ctrl/Cmd+click (see click handler). */
    function urlLinkHtml(raw) {
      var text = String(raw || '').trim();
      if (!text) return '<span class="mnote-vault-muted">—</span>';
      var href = externalUrlHref(text);
      if (!href) {
        return '<span class="mnote-vault-field-value">' + escapeHtml(text) + '</span>';
      }
      return (
        '<a class="mnote-vault-url-link" href="' +
        escapeHtml(href) +
        '" data-vault-external-url="' +
        escapeHtml(href) +
        '" title="Ctrl/Cmd + 点击打开">' +
        escapeHtml(text) +
        '</a>'
      );
    }

    function emptyForm(defaults) {
      defaults = defaults || {};
      var urls = normalizeUrlsFromItem(defaults);
      if (!urls.length && defaults.url) urls = [String(defaults.url)];
      return {
        id: '',
        title: defaults.title || '',
        url: urls[0] || defaults.url || '',
        urls: urls,
        username: defaults.username || '',
        email: defaults.email || '',
        passwordHint: defaults.passwordHint || '',
        folderPath: defaults.folderPath || '',
        password: { state: 'absent' },
        apikey: { state: 'absent' },
        token: { state: 'absent' },
        accounts: defaults.accounts || [
          {
            id: '',
            label: '',
            username: defaults.username || '',
            email: defaults.email || '',
            passwordHint: defaults.passwordHint || '',
            password: { state: 'absent' },
            secrets: defaults.secrets || [],
          },
        ],
        // Top-level secrets kept for API flatten only; UI nests under accounts.
        secrets: defaults.secrets || [],
        tags: defaults.tags || [],
        notesMarkdown: defaults.notesMarkdown || '## Notes\n\n',
        revision: 0,
        status: 'active',
      };
    }

    function newClientId(prefix) {
      return (
        prefix +
        '_' +
        Math.random().toString(16).slice(2) +
        Date.now().toString(16)
      );
    }

    /** View shows expanded value; edit prefers raw [Key] template when present. */
    function cipherFieldValue(displayValue, templateValue) {
      if (templateValue) return String(templateValue);
      return displayValue || '';
    }

    function mapSecretSlot(s) {
      return {
        id: (s && s.id) || '',
        kind: (s && s.kind) || 'apikey',
        label: (s && s.label) || '',
        value: (s && s.value) || { state: 'absent' },
        // Draft-only flag from reRenderFormKeepingSlots; absent on server items.
        valueClear: !!(s && s.valueClear),
        accountId: (s && (s.accountId || s.account_id)) || '',
      };
    }

    /** Flatten top-level secrets for legacy items; prefer nested account.secrets. */
    function normalizeSecretsFromItem(item) {
      var secrets = (item && item.secrets) || [];
      if (secrets.length) {
        return secrets.map(mapSecretSlot);
      }
      var out = [];
      if (item && item.apikey && item.apikey.state && item.apikey.state !== 'absent') {
        out.push({
          id: '',
          kind: 'apikey',
          label: 'API Key',
          value: item.apikey,
          accountId: '',
        });
      }
      if (item && item.token && item.token.state && item.token.state !== 'absent') {
        out.push({
          id: '',
          kind: 'token',
          label: 'Token',
          value: item.token,
          accountId: '',
        });
      }
      return out;
    }

    /** 将 ISO 时间格式化为本地可读短串；无效则原样返回。 */
    function formatVaultDateTime(raw) {
      var s = String(raw || '').trim();
      if (!s) return '';
      var d = new Date(s);
      if (isNaN(d.getTime())) return s;
      try {
        return d.toLocaleString('zh-CN', {
          year: 'numeric',
          month: '2-digit',
          day: '2-digit',
          hour: '2-digit',
          minute: '2-digit',
          hour12: false,
        });
      } catch (_e) {
        return s;
      }
    }

    /**
     * 账号级登录态展示（扩展 Cookie session）。
     * 优先账号槽位字段；合成单账号时回退条目级 hasLoginSession / sessionUpdatedAt。
     */
    function accountSessionView(acc, item, isSyntheticSingle) {
      var has =
        acc && typeof acc.hasLoginSession === 'boolean'
          ? acc.hasLoginSession
          : isSyntheticSingle && item
            ? !!item.hasLoginSession
            : false;
      var savedAt =
        (acc && (acc.lastLoginAt || acc.sessionUpdatedAt)) ||
        (isSyntheticSingle && item
          ? item.lastLoginAt || item.sessionUpdatedAt || ''
          : '') ||
        '';
      var expiresAt =
        (acc && acc.sessionExpiresAt) ||
        (isSyntheticSingle && item ? item.sessionExpiresAt || '' : '') ||
        '';
      return {
        hasLoginSession: !!has,
        savedAt: String(savedAt || '').trim(),
        expiresAt: String(expiresAt || '').trim(),
        source: (acc && acc.sessionSource) || '',
      };
    }

    /** 详情页：账号下「是否保存登录态 + 保存日期」行。 */
    function renderAccountSessionRows(sess, showEmpty) {
      if (!sess.hasLoginSession && !showEmpty) {
        // 未保存时也简短展示一行，避免用户以为功能缺失
        return (
          '<div class="mnote-vault-field-row mnote-vault-session-row" data-testid="vault-account-session">' +
          '<label>登录态</label>' +
          '<div><span class="mnote-vault-session-badge is-absent">未保存</span></div>' +
          '</div>'
        );
      }
      var badge = sess.hasLoginSession
        ? '<span class="mnote-vault-session-badge is-saved" data-testid="vault-session-saved">已保存</span>'
        : '<span class="mnote-vault-session-badge is-absent" data-testid="vault-session-absent">未保存</span>';
      var dateText = sess.hasLoginSession
        ? formatVaultDateTime(sess.savedAt) || '—'
        : '—';
      var html =
        '<div class="mnote-vault-field-row mnote-vault-session-row" data-testid="vault-account-session">' +
        '<label>登录态</label>' +
        '<div class="mnote-vault-session-meta">' +
        badge +
        '</div></div>' +
        '<div class="mnote-vault-field-row mnote-vault-session-row" data-testid="vault-account-session-date">' +
        '<label>保存日期</label>' +
        '<div>' +
        (sess.hasLoginSession
          ? escapeHtml(dateText)
          : '<span class="mnote-vault-muted">—</span>') +
        '</div></div>';
      if (sess.hasLoginSession && sess.expiresAt) {
        html +=
          '<div class="mnote-vault-field-row mnote-vault-session-row" data-testid="vault-account-session-expires">' +
          '<label>过期时间</label>' +
          '<div>' +
          escapeHtml(formatVaultDateTime(sess.expiresAt) || sess.expiresAt) +
          '</div></div>';
      }
      return html;
    }

    function normalizeAccountsFromItem(item, forEdit) {
      var topSecrets = normalizeSecretsFromItem(item);
      var accounts = (item && item.accounts) || [];
      if (accounts.length) {
        var anyNested = accounts.some(function (a) {
          return a.secrets && a.secrets.length;
        });
        return accounts.map(function (a, aidx) {
          var nested = (a.secrets || []).map(mapSecretSlot);
          // Legacy: top-level secrets attach to first account when no nested.
          if (!anyNested && aidx === 0 && topSecrets.length) {
            nested = topSecrets.slice();
          } else if (!anyNested && topSecrets.length) {
            nested = topSecrets.filter(function (s) {
              return s.accountId && s.accountId === a.id;
            });
          }
          // 多账号时：若槽位未挂 session 元数据，首账号可回退条目级（兼容旧投影）
          var hasSess =
            typeof a.hasLoginSession === 'boolean'
              ? a.hasLoginSession
              : aidx === 0
                ? !!(item && item.hasLoginSession)
                : false;
          var lastLogin =
            a.lastLoginAt ||
            (aidx === 0 && item ? item.lastLoginAt : null) ||
            null;
          var sessUpdated =
            a.sessionUpdatedAt ||
            (aidx === 0 && item ? item.sessionUpdatedAt : null) ||
            null;
          var sessExpires =
            a.sessionExpiresAt ||
            (aidx === 0 && item ? item.sessionExpiresAt : null) ||
            null;
          return {
            id: a.id || '',
            label: a.label || '',
            username: forEdit
              ? cipherFieldValue(a.username, a.usernameTemplate)
              : a.username || '',
            email: forEdit
              ? cipherFieldValue(a.email, a.emailTemplate)
              : a.email || '',
            passwordHint: a.passwordHint || '',
            password: a.password || { state: 'absent' },
            // Draft-only flag from reRenderFormKeepingSlots; absent on server items.
            passwordClear: !!a.passwordClear,
            secrets: nested,
            hasLoginSession: hasSess,
            lastLoginAt: lastLogin,
            sessionUpdatedAt: sessUpdated,
            sessionExpiresAt: sessExpires,
            sessionSource: a.sessionSource || '',
          };
        });
      }
      if (
        (item && (item.username || item.email || item.passwordHint || item.usernameTemplate || item.emailTemplate)) ||
        (item && item.password && item.password.state && item.password.state !== 'absent') ||
        topSecrets.length
      ) {
        return [
          {
            id: '',
            label: '',
            username: forEdit
              ? cipherFieldValue(item && item.username, item && item.usernameTemplate)
              : (item && item.username) || '',
            email: forEdit
              ? cipherFieldValue(item && item.email, item && item.emailTemplate)
              : (item && item.email) || '',
            passwordHint: (item && item.passwordHint) || '',
            password: (item && item.password) || { state: 'absent' },
            secrets: topSecrets,
            // 合成单账号：登录态取条目级
            hasLoginSession: !!(item && item.hasLoginSession),
            lastLoginAt: (item && item.lastLoginAt) || null,
            sessionUpdatedAt: (item && item.sessionUpdatedAt) || null,
            sessionExpiresAt: (item && item.sessionExpiresAt) || null,
            sessionSource: '',
            _syntheticFromItem: true,
          },
        ];
      }
      return [
        {
          id: '',
          label: '',
          username: '',
          email: '',
          passwordHint: '',
          password: { state: 'absent' },
          secrets: [],
          hasLoginSession: !!(item && item.hasLoginSession),
          lastLoginAt: (item && item.lastLoginAt) || null,
          sessionUpdatedAt: (item && item.sessionUpdatedAt) || null,
          sessionExpiresAt: (item && item.sessionExpiresAt) || null,
          sessionSource: '',
          _syntheticFromItem: true,
        },
      ];
    }

    function renderDetail() {
      if (!detailEl) return;
      if (!state.rootUri) {
        detailEl.innerHTML =
          '<div class="mnote-vault-empty">请先打开本地文件夹工作区，再使用密码箱。</div>';
        syncHeaderCipherInsertVisibility();
        return;
      }
      if (state.mode === 'cipher') {
        renderCipherBook();
        syncHeaderCipherInsertVisibility();
        return;
      }
      if (state.mode === 'create') {
        renderForm(emptyForm(state._createDefaults || {}), true);
        syncHeaderCipherInsertVisibility();
        return;
      }
      if (!state.item && !state.selectedId) {
        detailEl.innerHTML =
          '<div class="mnote-vault-empty" data-testid="vault-detail-empty">从左侧选择条目，或点击「新建」。</div>';
        syncHeaderCipherInsertVisibility();
        return;
      }
      if (!state.item) {
        detailEl.innerHTML = '<div class="mnote-vault-empty">加载中…</div>';
        syncHeaderCipherInsertVisibility();
        return;
      }
      if (state.mode === 'edit') {
        renderForm(state.item, false);
        syncHeaderCipherInsertVisibility();
        return;
      }
      renderView(state.item);
      syncHeaderCipherInsertVisibility();
    }

    function revealKey(field, accountId, secretId) {
      if (secretId) return 'secret:' + secretId;
      if (accountId && field === 'password') return 'account:' + accountId + ':password';
      return field;
    }

    function secretRow(label, field, secretState, showEmpty, opts) {
      opts = opts || {};
      var accountId = opts.accountId || '';
      var secretId = opts.secretId || '';
      var key = revealKey(field, accountId, secretId);
      var has = secretState && secretState.state === 'masked';
      var canReveal = has || (secretState && secretState.state === 'revealed');
      if (!canReveal && !showEmpty) return '';
      var shown = state.revealed[key]
        ? state._revealedValues && state._revealedValues[key]
          ? escapeHtml(state._revealedValues[key])
          : '…'
        : maskLabel(secretState);
      var extra =
        (accountId ? ' data-vault-account-id="' + escapeHtml(accountId) + '"' : '') +
        (secretId ? ' data-vault-secret-id="' + escapeHtml(secretId) + '"' : '');
      return (
        '<div class="mnote-vault-field-row" data-vault-secret-row="' +
        escapeHtml(key) +
        '">' +
        '<label>' +
        escapeHtml(label) +
        '</label>' +
        '<div class="mnote-vault-secret-value" data-testid="vault-secret-' +
        escapeHtml(key) +
        '">' +
        shown +
        '</div>' +
        '<div class="mnote-vault-secret-actions">' +
        (canReveal
          ? '<button type="button" data-vault-reveal="' +
            escapeHtml(field) +
            '"' +
            extra +
            '>' +
            (state.revealed[key] ? '隐藏' : '显示') +
            '</button>' +
            '<button type="button" data-vault-copy-secret="' +
            escapeHtml(field) +
            '"' +
            extra +
            '>复制</button>'
          : '<span class="mnote-vault-muted">未设置</span>') +
        '</div></div>'
      );
    }

    function sameUrlAccounts(item) {
      var url = (item.url || '').trim();
      if (!url) return [];
      return state.items.filter(function (other) {
        return other.id !== item.id && (other.url || '').trim() === url;
      });
    }

    function renderView(item) {
      var visibleTags = (item.tags || []).filter(function (t) {
        return t !== 'ai-shared';
      });
      var tags = visibleTags
        .map(function (t) {
          return '<span class="mnote-vault-tag">' + escapeHtml(t) + '</span>';
        })
        .join(' ');
      var isDeleted = item.status === 'deleted' || state.status === 'deleted';
      var siblings = sameUrlAccounts(item);
      var siblingHtml = '';
      if (siblings.length) {
        siblingHtml =
          '<div class="mnote-vault-field-row mnote-vault-siblings"><label>同站其他账号</label><div class="mnote-vault-sibling-list">' +
          siblings
            .map(function (s) {
              return (
                '<button type="button" class="mnote-vault-sibling" data-vault-item-id="' +
                escapeHtml(s.id) +
                '">' +
                escapeHtml(s.title || s.username || s.id) +
                (s.username ? ' · ' + escapeHtml(s.username) : '') +
                '</button>'
              );
            })
            .join('') +
          '</div></div>';
      }
      var shared = itemIsSharedToAi(item);
      var aiCopy = itemIsAiCopy(item) || state.isAiVault;
      var link = item.sharedToAi || {};
      var titleChips = '';
      if (shared && !state.isAiVault) {
        titleChips +=
          '<span class="mnote-vault-status-chip is-shared" data-testid="vault-shared-banner" title="编辑保存会自动同步到 AI 副本' +
          (link.targetActorId ? ' · ' + escapeHtml(link.targetActorId) : '') +
          (link.lastSyncedAt
            ? ' · ' + escapeHtml(String(link.lastSyncedAt).slice(0, 16).replace('T', ' '))
            : '') +
          '">已共享</span>';
      }
      if (aiCopy && (item.sharedFrom || state.isAiVault)) {
        titleChips +=
          '<span class="mnote-vault-status-chip is-ai" data-testid="vault-ai-copy-banner" title="' +
          (item.sharedFrom
            ? '来自 ' + escapeHtml(item.sharedFrom.sourceActorId || '')
            : 'AI 密码本') +
          '">AI</span>';
      }

      var shareBtn = '';
      if (!isDeleted && !state.isAiVault && !aiCopy) {
        shareBtn = shared
          ? '<button type="button" data-vault-share-ai data-testid="vault-share-ai" title="同步到 AI 副本">同步 AI</button>' +
            '<button type="button" class="is-danger" data-vault-unshare-ai data-testid="vault-unshare-ai" title="撤销共享并删除 AI 密码本副本">撤销共享</button>'
          : '<button type="button" data-vault-share-ai data-testid="vault-share-ai" title="共享到 AI 密码本">共享 AI</button>';
      }

      var showEmpty = !!state.showEmptyFields;
      var accounts = normalizeAccountsFromItem(item, false);
      var accountsHtml = accounts
        .map(function (acc, idx) {
          var title =
            acc.label ||
            acc.username ||
            acc.email ||
            '账号 ' + (idx + 1);
          var sess = accountSessionView(
            acc,
            item,
            !!acc._syntheticFromItem || accounts.length === 1
          );
          var body =
            fieldRow('标签名', acc.label, showEmpty) +
            fieldRow('用户名', acc.username, showEmpty) +
            fieldRow('邮箱', acc.email, showEmpty) +
            secretRow('密码', 'password', acc.password, showEmpty, {
              accountId: acc.id || '',
            }) +
            fieldRow('密码提示', acc.passwordHint, showEmpty) +
            renderAccountSessionRows(sess, showEmpty);
          var secList = acc.secrets || [];
          var nestedSecretsHtml = secList
            .map(function (sec, sidx) {
              var kindLabel =
                sec.kind === 'token'
                  ? 'Token'
                  : sec.kind === 'other'
                    ? '其他'
                    : 'API Key';
              var stitle = sec.label || kindLabel + ' ' + (sidx + 1);
              return (
                '<div class="mnote-vault-nested-secret" data-vault-secret-view="' +
                escapeHtml(sec.id || String(sidx)) +
                '">' +
                '<div class="mnote-vault-nested-secret-title">' +
                escapeHtml(kindLabel) +
                (sec.label ? ' · ' + escapeHtml(sec.label) : '') +
                '</div>' +
                secretRow(
                  stitle,
                  sec.kind === 'token' ? 'token' : 'apikey',
                  sec.value,
                  showEmpty,
                  { secretId: sec.id || '' }
                ) +
                '</div>'
              );
            })
            .join('');
          if (nestedSecretsHtml) {
            // 附录密钥默认折叠；展开态记在 state，避免显示/隐藏密码时整页重绘后被收起。
            body += renderSecretsPanelHtml({
              accKey: accountUiKey(acc.id, idx),
              title: '附录密钥',
              count: secList.length,
              bodyHtml: nestedSecretsHtml,
            });
          } else if (showEmpty) {
            body +=
              '<div class="mnote-vault-muted mnote-vault-account-secrets-empty">暂无附录密钥</div>';
          }
          if (!body.trim()) {
            body = '<div class="mnote-vault-muted">（空账号组）</div>';
          }
          return (
            '<details class="mnote-vault-slot-group" open data-vault-account-view="' +
            escapeHtml(acc.id || String(idx)) +
            '">' +
            '<summary class="mnote-vault-slot-summary">' +
            '<span class="mnote-vault-slot-title">账号 · ' +
            escapeHtml(title) +
            '</span>' +
            (secList.length
              ? '<span class="mnote-vault-muted">密钥 ' + secList.length + '</span>'
              : '') +
            (sess.hasLoginSession
              ? '<span class="mnote-vault-session-badge is-saved is-compact" title="已保存登录态">登录态</span>'
              : '') +
            '</summary>' +
            '<div class="mnote-vault-slot-body">' +
            body +
            '</div></details>'
          );
        })
        .join('');
      if (!accountsHtml && showEmpty) {
        accountsHtml =
          '<div class="mnote-vault-muted">暂无账号组</div>';
      }
      var urls = normalizeUrlsFromItem(item);
      var urlsHtml = '';
      if (urls.length) {
        urlsHtml = urls
          .map(function (u, idx) {
            var label = idx === 0 ? (urls.length > 1 ? '主网址' : '网址') : '备用 ' + idx;
            return (
              '<div class="mnote-vault-field-row">' +
              '<label>' +
              escapeHtml(label) +
              '</label>' +
              '<div class="mnote-vault-field-value">' +
              urlLinkHtml(u) +
              '</div></div>'
            );
          })
          .join('');
      } else if (showEmpty) {
        urlsHtml = fieldRow('网址', '', true);
      }
      var fieldsHtml =
        fieldRow('分组', item.folderPath, showEmpty) +
        (urls.length > 1
          ? '<div class="mnote-vault-section mnote-vault-urls-view">' +
            '<div class="mnote-vault-section-head"><span>网址（等价入口）</span>' +
            '<span class="mnote-vault-muted">' +
            urls.length +
            ' 个</span></div>' +
            urlsHtml +
            '</div>'
          : urlsHtml) +
        '<div class="mnote-vault-section">' +
        '<div class="mnote-vault-section-head"><span>登录账号</span>' +
        (accounts.length > 1
          ? '<span class="mnote-vault-muted">' + accounts.length + ' 组</span>'
          : '') +
        '</div>' +
        accountsHtml +
        '</div>' +
        (visibleTags.length || showEmpty
          ? '<div class="mnote-vault-field-row"><label>标签</label><div>' +
            (tags || '<span class="mnote-vault-muted">无</span>') +
            '</div></div>'
          : '') +
        siblingHtml +
        (!isNotesEmpty(item.notesMarkdown) || showEmpty
          ? '<div class="mnote-vault-field-row mnote-vault-notes"><label>备注</label><pre>' +
            escapeHtml(item.notesMarkdown || '') +
            '</pre></div>'
          : '') +
        '<p class="mnote-vault-hint-mini">' +
        '<button type="button" class="mnote-vault-linkish" data-vault-toggle-empty-fields data-testid="vault-toggle-empty-fields">' +
        (showEmpty ? '隐藏空字段' : '显示空字段') +
        '</button></p>';

      detailEl.innerHTML =
        '<div class="mnote-vault-detail-view" data-testid="vault-detail-view">' +
        '<div class="mnote-vault-detail-header">' +
        '<h2 class="mnote-vault-detail-title">' +
        '<span class="mnote-vault-detail-title-text">' +
        escapeHtml(item.title || '') +
        '</span>' +
        titleChips +
        '</h2>' +
        '<div class="mnote-vault-detail-actions">' +
        (isDeleted
          ? '<button type="button" data-vault-restore>恢复</button>' +
            '<button type="button" class="is-danger" data-vault-purge>永久删除</button>'
          : shareBtn +
            '<button type="button" data-vault-edit>编辑</button>' +
            '<button type="button" class="is-danger" data-vault-delete>删除</button>') +
        '</div></div>' +
        '<div class="mnote-vault-fields">' +
        fieldsHtml +
        '</div></div>';
    }

    function fieldRow(label, value, showEmpty) {
      if (!value && !showEmpty) return '';
      return (
        '<div class="mnote-vault-field-row"><label>' +
        escapeHtml(label) +
        '</label><div>' +
        (value
          ? escapeHtml(value)
          : '<span class="mnote-vault-muted">—</span>') +
        '</div></div>'
      );
    }

    /** Unique folderPath values from current list (for picker / datalist). */
    function collectFolderPaths() {
      var set = {};
      (state.items || []).forEach(function (item) {
        var fp = (item.folderPath || '').trim();
        if (!fp) return;
        set[fp] = true;
        var parts = fp.split('/').filter(Boolean);
        for (var i = 1; i < parts.length; i++) {
          set[parts.slice(0, i).join('/')] = true;
        }
      });
      return Object.keys(set).sort(function (a, b) {
        return a.localeCompare(b, 'zh');
      });
    }

    /**
     * Nested tree of known folderPath segments for the expand-style picker.
     * @returns {{ name: string, path: string, children: Array }}
     */
    function buildFolderPickerTree(paths) {
      var root = { name: '', path: '', children: [] };
      var byPath = { '': root };
      (paths || []).forEach(function (fp) {
        var parts = String(fp || '')
          .split('/')
          .filter(Boolean);
        var acc = [];
        var parent = root;
        parts.forEach(function (part) {
          acc.push(part);
          var p = acc.join('/');
          if (!byPath[p]) {
            var node = { name: part, path: p, children: [] };
            byPath[p] = node;
            parent.children.push(node);
          }
          parent = byPath[p];
        });
      });
      function sortNodes(nodes) {
        nodes.sort(function (a, b) {
          return a.name.localeCompare(b.name, 'zh');
        });
        nodes.forEach(function (n) {
          if (n.children && n.children.length) sortNodes(n.children);
        });
      }
      sortNodes(root.children);
      return root;
    }

    /**
     * Whether a picker branch starts expanded.
     * Default: all collapsed. Only expand ancestors of the current selection
     * (so the selected path stays visible), or branches the user toggled open.
     */
    function isFolderPickerBranchOpen(path, depth, current) {
      var ui = ensureFormUi();
      if (!ui.folderPickerOpen) ui.folderPickerOpen = {};
      if (Object.prototype.hasOwnProperty.call(ui.folderPickerOpen, path)) {
        return !!ui.folderPickerOpen[path];
      }
      // Only auto-open ancestors of the selected path (not the leaf itself unless it has kids under selection).
      if (current && path && current.indexOf(path + '/') === 0) {
        return true;
      }
      return false;
    }

    function renderFolderPickerNode(node, depth, current) {
      var kids = node.children || [];
      var hasKids = kids.length > 0;
      var selected = current === node.path;
      var open = hasKids && isFolderPickerBranchOpen(node.path, depth, current);
      var html = '';
      html +=
        '<div class="mnote-vault-folder-picker-node" data-vault-picker-path="' +
        escapeHtml(node.path) +
        '" style="--vault-picker-depth:' +
        depth +
        '">';
      html += '<div class="mnote-vault-folder-picker-row' + (selected ? ' is-selected' : '') + '">';
      if (hasKids) {
        html +=
          '<button type="button" class="mnote-vault-folder-picker-chevron" data-vault-folder-picker-toggle="' +
          escapeHtml(node.path) +
          '" aria-expanded="' +
          (open ? 'true' : 'false') +
          '" title="' +
          (open ? '收起' : '展开') +
          '">' +
          (open ? '▼' : '▶') +
          '</button>';
      } else {
        html += '<span class="mnote-vault-folder-picker-chevron is-leaf" aria-hidden="true"></span>';
      }
      html +=
        '<button type="button" class="mnote-vault-folder-picker-label" data-vault-folder-pick="' +
        escapeHtml(node.path) +
        '" data-testid="vault-folder-pick-' +
        escapeHtml(node.path || 'root') +
        '">' +
        escapeHtml(node.name || node.path) +
        '</button>';
      html += '</div>';
      if (hasKids) {
        html +=
          '<div class="mnote-vault-folder-picker-children"' +
          (open ? '' : ' hidden') +
          '>';
        kids.forEach(function (child) {
          html += renderFolderPickerNode(child, depth + 1, current);
        });
        html += '</div>';
      }
      html += '</div>';
      return html;
    }

    function formFolderPathField(value) {
      var current = normalizeFolderPath(value || '');
      var paths = collectFolderPaths();
      var seen = {};
      paths.forEach(function (p) {
        seen[p] = true;
      });
      // 当前值若不在列表中，仍挂到树上便于高亮/再选。
      var treePaths = paths.slice();
      if (current && !seen[current]) {
        treePaths.push(current);
        var parts = current.split('/').filter(Boolean);
        for (var i = 1; i < parts.length; i++) {
          var prefix = parts.slice(0, i).join('/');
          if (treePaths.indexOf(prefix) < 0) treePaths.push(prefix);
        }
      }
      var tree = buildFolderPickerTree(treePaths);
      var treeHtml = '';
      treeHtml +=
        '<button type="button" class="mnote-vault-folder-picker-none' +
        (!current ? ' is-selected' : '') +
        '" data-vault-folder-pick="" data-testid="vault-folder-pick-none">（无分组）</button>';
      tree.children.forEach(function (child) {
        treeHtml += renderFolderPickerNode(child, 0, current);
      });
      if (!tree.children.length && !current) {
        treeHtml +=
          '<div class="mnote-vault-folder-picker-empty mnote-vault-muted">暂无已有分组，可在下方输入新建</div>';
      }
      return (
        '<div class="mnote-vault-field-row mnote-vault-folder-field">' +
        '<label for="vault-f-folderPath">分组</label>' +
        '<div class="mnote-vault-folder-controls">' +
        '<div class="mnote-vault-folder-picker" data-vault-folder-picker data-testid="vault-folder-select" role="listbox" aria-label="选择分组">' +
        treeHtml +
        '</div>' +
        '<input id="vault-f-folderPath" name="folderPath" type="text" ' +
        'value="' +
        escapeHtml(current) +
        '" placeholder="点上方分组选择，或直接输入；用 / 分层" ' +
        'data-vault-folder-input data-testid="vault-folder-path" list="vault-folder-path-list" autocomplete="off" />' +
        '<datalist id="vault-folder-path-list">' +
        paths
          .map(function (p) {
            return '<option value="' + escapeHtml(p) + '"></option>';
          })
          .join('') +
        '</datalist>' +
        '<p class="mnote-vault-form-hint mnote-vault-folder-hint">分组默认折叠；点 ▶ 展开，点名称即可选中。也可在下方直接输入路径。</p>' +
        '</div></div>'
      );
    }

    function syncFolderPickerSelection(form, path) {
      if (!form) return;
      var picker = qs('[data-vault-folder-picker]', form);
      if (!picker) return;
      var normalized = normalizeFolderPath(path || '');
      qsa('[data-vault-folder-pick]', picker).forEach(function (btn) {
        var p = btn.getAttribute('data-vault-folder-pick');
        if (p == null) p = '';
        var row = btn.closest('.mnote-vault-folder-picker-row');
        var selected = p === normalized;
        btn.classList.toggle('is-selected', selected);
        if (row) row.classList.toggle('is-selected', selected);
        if (btn.classList.contains('mnote-vault-folder-picker-none')) {
          btn.classList.toggle('is-selected', selected);
        }
      });
    }

    function bindFolderPathControls(form) {
      if (!form) return;
      var input = qs('[data-vault-folder-input]', form);
      var picker = qs('[data-vault-folder-picker]', form);
      if (picker) {
        picker.addEventListener('click', function (ev) {
          var t = ev.target;
          if (!(t instanceof Element)) return;
          var toggle = t.closest('[data-vault-folder-picker-toggle]');
          if (toggle && picker.contains(toggle)) {
            ev.preventDefault();
            var tpath = toggle.getAttribute('data-vault-folder-picker-toggle') || '';
            var nodeEl = toggle.closest('.mnote-vault-folder-picker-node');
            // First matching descendants is the direct children panel for this node.
            var kidsEl =
              nodeEl && nodeEl.querySelector('.mnote-vault-folder-picker-children');
            var open = toggle.getAttribute('aria-expanded') === 'true';
            var next = !open;
            ensureFormUi().folderPickerOpen = ensureFormUi().folderPickerOpen || {};
            ensureFormUi().folderPickerOpen[tpath] = next;
            toggle.setAttribute('aria-expanded', next ? 'true' : 'false');
            toggle.textContent = next ? '▼' : '▶';
            toggle.setAttribute('title', next ? '收起' : '展开');
            if (kidsEl) kidsEl.hidden = !next;
            return;
          }
          var pick = t.closest('[data-vault-folder-pick]');
          if (pick && picker.contains(pick)) {
            ev.preventDefault();
            var chosen = pick.getAttribute('data-vault-folder-pick');
            if (chosen == null) chosen = '';
            chosen = normalizeFolderPath(chosen);
            if (input) input.value = chosen;
            syncFolderPickerSelection(form, chosen);
            state.dirty = true;
          }
        });
      }
      if (input) {
        input.addEventListener('input', function () {
          syncFolderPickerSelection(form, input.value);
        });
        input.addEventListener('change', function () {
          var n = normalizeFolderPath(input.value);
          input.value = n;
          syncFolderPickerSelection(form, n);
          state.dirty = true;
        });
      }
    }

    function renderForm(item, isCreate) {
      var tagsStr = (item.tags || []).join(', ');
      // 编辑时用 usernameTemplate/emailTemplate，避免把已展开明文写回。
      var accounts = normalizeAccountsFromItem(item, true);
      // Prefer draft rows (may include empty slots after "+ 网址"); do not strip blanks.
      var urls = urlsForFormEditor(item);
      state._formUrls = urls.slice();
      /**
       * Rebuild draft slots from item projection.
       * reRenderFormKeepingSlots injects in-progress plaintext as
       * `{ state: 'revealed', value }` — must become valueText/passwordValue,
       * not be wiped to '' (that made the 1st new secret disappear after +密钥).
       * valueClear/passwordClear on the pseudo-item are also preserved.
       */
      state._formAccounts = accounts.map(function (a) {
        var pwd = a.password || { state: 'absent' };
        var passwordClear = !!a.passwordClear;
        var passwordValue = '';
        var passwordState = pwd;
        if (passwordClear) {
          passwordState = { state: 'absent' };
          passwordValue = '';
        } else if (pwd && pwd.state === 'revealed') {
          // Draft plaintext typed in this session (not yet saved / mid re-render).
          passwordValue = String(pwd.value || '');
          // Treat as "no stored secret yet" for keep-logic; save uses passwordValue.
          passwordState = { state: 'absent' };
        }
        return {
          id: a.id || newClientId('acc'),
          label: a.label || '',
          username: a.username || '',
          email: a.email || '',
          passwordHint: a.passwordHint || '',
          passwordState: passwordState,
          passwordClear: passwordClear,
          passwordValue: passwordValue,
          secrets: (a.secrets || []).map(function (s) {
            var v = s.value || { state: 'absent' };
            var valueClear = !!s.valueClear;
            var valueText = '';
            var valueState = v;
            if (valueClear) {
              valueState = { state: 'absent' };
              valueText = '';
            } else if (v && v.state === 'revealed') {
              valueText = String(v.value || '');
              valueState = { state: 'absent' };
            }
            return {
              id: s.id || newClientId('sec'),
              kind: s.kind || 'apikey',
              label: s.label || '',
              valueState: valueState,
              valueClear: valueClear,
              valueText: valueText,
              accountId: a.id || '',
            };
          }),
        };
      });
      if (!state._formAccounts.length) {
        state._formAccounts.push({
          id: newClientId('acc'),
          label: '',
          username: '',
          email: '',
          passwordHint: '',
          passwordState: { state: 'absent' },
          passwordClear: false,
          passwordValue: '',
          secrets: [],
        });
      }
      // Legacy flat list no longer used in UI; kept empty for re-render injects.
      state._formSecrets = [];

      function urlsEditorHtml() {
        var rows = (state._formUrls || ['']).map(function (u, idx) {
          return (
            '<div class="mnote-vault-url-row" data-vault-url-idx="' +
            idx +
            '">' +
            '<label class="mnote-vault-url-label">' +
            (idx === 0 ? '主网址' : '备用 ' + idx) +
            '</label>' +
            '<input type="url" data-vault-url-input data-url-idx="' +
            idx +
            '" value="' +
            escapeHtml(u || '') +
            '" placeholder="' +
            (idx === 0
              ? 'https://example.com'
              : '等价入口，如 FRP / 内网') +
            '" autocomplete="off" />' +
            (idx > 0
              ? '<button type="button" class="is-ghost" data-vault-remove-url="' +
                idx +
                '" title="移除">×</button>'
              : '<span class="mnote-vault-url-spacer"></span>') +
            '</div>'
          );
        });
        return (
          '<div class="mnote-vault-section" data-vault-urls-section>' +
          '<div class="mnote-vault-section-head">' +
          '<span>网址（等价入口 / fallback）</span>' +
          '<button type="button" data-vault-add-url data-testid="vault-add-url">+ 网址</button>' +
          '</div>' +
          '<p class="mnote-vault-form-hint mnote-vault-url-hint">同一服务多个可达地址时，第一项为主入口，其余为备用（VPS / FRP / 本地等）。</p>' +
          rows.join('') +
          '</div>'
        );
      }

      function accountGroupHtml(acc, idx) {
        // Preserve which account groups were open across re-renders (not only idx===0).
        var uiOpen = state._formUi && state._formUi.openAccountIds;
        var open =
          (uiOpen && uiOpen[acc.id] === true) ||
          (uiOpen && uiOpen[acc.id] !== false && idx === 0) ||
          (!uiOpen && idx === 0)
            ? ' open'
            : '';
        var title = acc.label || acc.username || acc.email || '账号 ' + (idx + 1);
        var hasPwd = acc.passwordState && acc.passwordState.state === 'masked';
        var secrets = acc.secrets || [];
        var secretsBody =
          secrets.length > 0
            ? secrets
                .map(function (sec, sidx) {
                  return secretRowHtml(sec, acc.id, sidx);
                })
                .join('')
            : '<div class="mnote-vault-muted mnote-vault-slot-empty">暂无密钥，可点 + 密钥 添加</div>';
        // 附录密钥编辑区默认折叠；展开态跨 re-render 保留（+密钥 / 显示密文等）。
        var secretsPanel = renderSecretsPanelHtml({
          accKey: accountUiKey(acc.id, idx),
          title: '附录密钥（API Key / Token）',
          count: secrets.length,
          bodyHtml: secretsBody,
          extraAttrs:
            ' data-vault-account-secrets="' + escapeHtml(acc.id) + '"',
          headExtra:
            '<button type="button" data-vault-add-secret-slot data-acc-id="' +
            escapeHtml(acc.id) +
            '" data-testid="vault-add-secret-slot">+ 密钥</button>',
        });
        return (
          '<details class="mnote-vault-slot-group" data-vault-account-slot="' +
          escapeHtml(acc.id) +
          '"' +
          open +
          '>' +
          '<summary class="mnote-vault-slot-summary">' +
          '<span class="mnote-vault-slot-title">账号 · ' +
          escapeHtml(title) +
          '</span>' +
          (secrets.length
            ? '<span class="mnote-vault-muted">密钥 ' + secrets.length + '</span>'
            : '') +
          '<span class="mnote-vault-slot-actions" onclick="event.preventDefault()">' +
          (state._formAccounts.length > 1
            ? '<button type="button" class="is-danger" data-vault-remove-account="' +
              escapeHtml(acc.id) +
              '">删除</button>'
            : '') +
          '</span></summary>' +
          '<div class="mnote-vault-slot-body">' +
          '<div class="mnote-vault-field-row"><label>组标签</label>' +
          '<input type="text" data-acc-field="label" data-acc-id="' +
          escapeHtml(acc.id) +
          '" value="' +
          escapeHtml(acc.label) +
          '" placeholder="可选，如 主号 / 工作" /></div>' +
          '<div class="mnote-vault-field-row"><label>用户名（可用 [Key]）</label>' +
          '<input type="text" data-acc-field="username" data-acc-id="' +
          escapeHtml(acc.id) +
          '" value="' +
          escapeHtml(acc.username) +
          '" placeholder="明文或 [QY] 等密文片段" autocomplete="off" spellcheck="false" /></div>' +
          '<div class="mnote-vault-field-row"><label>邮箱（可用 [Key]）</label>' +
          '<input type="text" data-acc-field="email" data-acc-id="' +
          escapeHtml(acc.id) +
          '" value="' +
          escapeHtml(acc.email) +
          '" placeholder="明文或 [QY] 等密文片段" autocomplete="off" spellcheck="false" /></div>' +
          '<div class="mnote-vault-field-row"><label>密码（可用 [Key]）</label>' +
          '<div class="mnote-vault-secret-edit">' +
          '<input type="text" autocomplete="off" spellcheck="false" data-acc-field="password" data-acc-id="' +
          escapeHtml(acc.id) +
          '" class="mnote-vault-secret-input-plain" value="' +
          escapeHtml(acc.passwordValue || '') +
          '" placeholder="' +
          escapeHtml(
            !isCreate && hasPwd && !acc.passwordValue
              ? '留空不改；输入新值覆盖'
              : '可选；可用 [Key] 密文片段'
          ) +
          '" />' +
          (!isCreate && hasPwd
            ? '<button type="button" data-acc-show-password="' +
              escapeHtml(acc.id) +
              '"' +
              (acc.passwordValue ? ' data-shown="1"' : '') +
              ' data-testid="vault-acc-show-password">' +
              (acc.passwordValue ? '隐藏' : '显示') +
              '</button>' +
              '<button type="button" data-acc-clear-password="' +
              escapeHtml(acc.id) +
              '">清空</button>'
            : '') +
          '</div></div>' +
          '<div class="mnote-vault-field-row"><label>密码提示</label>' +
          '<input type="text" data-acc-field="passwordHint" data-acc-id="' +
          escapeHtml(acc.id) +
          '" value="' +
          escapeHtml(acc.passwordHint) +
          '" /></div>' +
          secretsPanel +
          '</div></details>'
        );
      }

      function secretRowHtml(sec, accountId, idx) {
        var kindLabel =
          sec.kind === 'token' ? 'Token' : sec.kind === 'other' ? '其他' : 'API Key';
        var title = sec.label || kindLabel + ' ' + (idx + 1);
        var hasVal = sec.valueState && sec.valueState.state === 'masked';
        var draftText = sec.valueText || '';
        return (
          '<div class="mnote-vault-nested-secret" data-vault-secret-slot="' +
          escapeHtml(sec.id) +
          '" data-acc-id="' +
          escapeHtml(accountId) +
          '">' +
          '<div class="mnote-vault-nested-secret-head">' +
          '<span class="mnote-vault-nested-secret-title">' +
          escapeHtml(kindLabel) +
          ' · ' +
          escapeHtml(title) +
          '</span>' +
          '<button type="button" class="is-danger" data-vault-remove-secret="' +
          escapeHtml(sec.id) +
          '" data-acc-id="' +
          escapeHtml(accountId) +
          '">删除</button>' +
          '</div>' +
          '<div class="mnote-vault-field-row"><label>类型</label>' +
          '<select data-sec-field="kind" data-sec-id="' +
          escapeHtml(sec.id) +
          '" data-acc-id="' +
          escapeHtml(accountId) +
          '">' +
          '<option value="apikey"' +
          (sec.kind === 'apikey' ? ' selected' : '') +
          '>API Key</option>' +
          '<option value="token"' +
          (sec.kind === 'token' ? ' selected' : '') +
          '>Token</option>' +
          '<option value="other"' +
          (sec.kind === 'other' ? ' selected' : '') +
          '>其他</option>' +
          '</select></div>' +
          '<div class="mnote-vault-field-row"><label>标签</label>' +
          '<input type="text" data-sec-field="label" data-sec-id="' +
          escapeHtml(sec.id) +
          '" data-acc-id="' +
          escapeHtml(accountId) +
          '" value="' +
          escapeHtml(sec.label) +
          '" placeholder="如 Gemini free / App 密码" /></div>' +
          '<div class="mnote-vault-field-row"><label>值</label>' +
          '<div class="mnote-vault-secret-edit">' +
          '<input type="text" autocomplete="off" spellcheck="false" class="mnote-vault-secret-input-plain" data-sec-field="value" data-sec-id="' +
          escapeHtml(sec.id) +
          '" data-acc-id="' +
          escapeHtml(accountId) +
          '" value="' +
          escapeHtml(draftText) +
          '" placeholder="' +
          escapeHtml(hasVal && !draftText ? '留空不改；输入新值覆盖' : '密钥明文') +
          '" />' +
          (hasVal
            ? '<button type="button" data-sec-show-value="' +
              escapeHtml(sec.id) +
              '" data-acc-id="' +
              escapeHtml(accountId) +
              '"' +
              (draftText ? ' data-shown="1"' : '') +
              ' data-testid="vault-sec-show-value">' +
              (draftText ? '隐藏' : '显示') +
              '</button>' +
              '<button type="button" data-sec-clear-value="' +
              escapeHtml(sec.id) +
              '" data-acc-id="' +
              escapeHtml(accountId) +
              '">清空</button>'
            : '') +
          '</div></div>' +
          '</div>'
        );
      }


      detailEl.innerHTML =
        '<form class="mnote-vault-form" data-testid="vault-form" data-vault-form="true">' +
        '<div class="mnote-vault-detail-header">' +
        '<h2>' +
        (isCreate ? '新建条目' : '编辑条目') +
        '</h2>' +
        '<div class="mnote-vault-detail-actions">' +
        '<button type="button" data-vault-cancel>取消</button>' +
        '<button type="submit" data-vault-save data-testid="vault-save">保存</button>' +
        '</div></div>' +
        '<p class="mnote-vault-form-hint">可先点用户名 / 邮箱 / 密码框，再点顶栏「插入密文」选择已有 [Key]；也可手写 <code>[Key]</code>。</p>' +
        '<div class="mnote-vault-fields">' +
        formField('title', '标题 *', item.title || '', true) +
        formFolderPathField(item.folderPath || '') +
        urlsEditorHtml() +
        '<div class="mnote-vault-section" data-vault-accounts-section>' +
        '<div class="mnote-vault-section-head">' +
        '<span>登录账号（用户名 / 邮箱 / 密码 / 提示）</span>' +
        '<button type="button" data-vault-add-account-slot data-testid="vault-add-account-slot">+ 账号</button>' +
        '</div>' +
        state._formAccounts.map(accountGroupHtml).join('') +
        '</div>' +
        formField('tags', '标签（逗号分隔）', tagsStr, false) +
        '<div class="mnote-vault-field-row mnote-vault-notes"><label>备注</label>' +
        '<textarea name="notesMarkdown" rows="6">' +
        escapeHtml(item.notesMarkdown || '') +
        '</textarea></div>' +
        '</div></form>';
      var form = qs('[data-vault-form]', detailEl);
      if (form) {
        state.lastCipherInsertTarget = null;
        state.lastCipherInsertRange = null;
        bindFolderPathControls(form);
        bindFormCipherInsertTracking(form);
        form.addEventListener('input', function () {
          state.dirty = true;
        });
        form.addEventListener('change', function () {
          state.dirty = true;
        });
        form.addEventListener('submit', function (ev) {
          ev.preventDefault();
          saveForm(form, isCreate);
        });
        // 顶栏「插入密文」在编辑态刷新 key 列表
        fetchCipherKeys({ silent: true })
          .then(function () {
            refreshCipherInsertSelect();
          })
          .catch(function () {
            /* 静默：下拉仍显示已有缓存或空 */
          });
      }
    }

    function snapshotFormSlots(form) {
      if (!form) return;
      var urlInputs = form.querySelectorAll('[data-vault-url-input]');
      if (urlInputs && urlInputs.length) {
        state._formUrls = [];
        for (var ui = 0; ui < urlInputs.length; ui++) {
          state._formUrls.push(urlInputs[ui].value || '');
        }
      }
      if (!state._formAccounts) return;
      state._formAccounts.forEach(function (acc) {
        var id = acc.id;
        var labelEl = form.querySelector('[data-acc-field="label"][data-acc-id="' + id + '"]');
        var userEl = form.querySelector('[data-acc-field="username"][data-acc-id="' + id + '"]');
        var emailEl = form.querySelector('[data-acc-field="email"][data-acc-id="' + id + '"]');
        var hintEl = form.querySelector(
          '[data-acc-field="passwordHint"][data-acc-id="' + id + '"]'
        );
        var pwdEl = form.querySelector('[data-acc-field="password"][data-acc-id="' + id + '"]');
        if (labelEl) acc.label = labelEl.value;
        if (userEl) acc.username = userEl.value;
        if (emailEl) acc.email = emailEl.value;
        if (hintEl) acc.passwordHint = hintEl.value;
        if (pwdEl) acc.passwordValue = pwdEl.value;
        (acc.secrets || []).forEach(function (sec) {
          var sid = sec.id;
          var kindEl = form.querySelector(
            '[data-sec-field="kind"][data-sec-id="' + sid + '"][data-acc-id="' + id + '"]'
          );
          var secLabelEl = form.querySelector(
            '[data-sec-field="label"][data-sec-id="' + sid + '"][data-acc-id="' + id + '"]'
          );
          var valEl = form.querySelector(
            '[data-sec-field="value"][data-sec-id="' + sid + '"][data-acc-id="' + id + '"]'
          );
          if (kindEl) sec.kind = kindEl.value;
          if (secLabelEl) sec.label = secLabelEl.value;
          if (valEl) sec.valueText = valEl.value;
          sec.accountId = id;
        });
      });
      state._formSecrets = [];
    }

    function collectFormUrls(form) {
      var raw = [];
      if (form) {
        var inputs = form.querySelectorAll('[data-vault-url-input]');
        for (var i = 0; i < inputs.length; i++) {
          raw.push(String(inputs[i].value || '').trim());
        }
      } else if (state._formUrls) {
        raw = state._formUrls.map(function (u) {
          return String(u || '').trim();
        });
      }
      var out = [];
      raw.forEach(function (t) {
        if (!t) return;
        if (out.indexOf(t) >= 0) return;
        out.push(t);
      });
      return out;
    }

    function reRenderFormKeepingSlots(isCreate) {
      var form = qs('[data-vault-form]', detailEl);
      if (form) snapshotFormSlots(form);
      var base = isCreate
        ? emptyForm(state._createDefaults || {})
        : state.item || emptyForm();
      // inject draft slots into a pseudo item for normalize
      base = Object.assign({}, base, {
        urls: (state._formUrls || []).slice(),
        url: (state._formUrls && state._formUrls[0]) || base.url || '',
        accounts: (state._formAccounts || []).map(function (a) {
          return {
            id: a.id,
            label: a.label,
            username: a.username,
            email: a.email,
            passwordHint: a.passwordHint,
            // Flags survive re-render so clear intent is not lost.
            passwordClear: !!a.passwordClear,
            password: a.passwordClear
              ? { state: 'absent' }
              : a.passwordValue
                ? { state: 'revealed', value: a.passwordValue }
                : a.passwordState,
            secrets: (a.secrets || []).map(function (s) {
              return {
                id: s.id,
                kind: s.kind,
                label: s.label,
                accountId: a.id,
                valueClear: !!s.valueClear,
                value: s.valueClear
                  ? { state: 'absent' }
                  : s.valueText
                    ? { state: 'revealed', value: s.valueText }
                    : s.valueState,
              };
            }),
          };
        }),
        secrets: [],
      });
      // preserve title/url etc from form
      if (form) {
        var fd = new FormData(form);
        base.title = String(fd.get('title') || base.title || '');
        var draftUrls = collectFormUrls(form);
        if (draftUrls.length || (state._formUrls && state._formUrls.length)) {
          // Keep empty draft rows while editing multi-url so re-render doesn't drop blanks mid-type.
          base.urls = (state._formUrls || draftUrls).slice();
          base.url = draftUrls[0] || base.urls[0] || '';
        }
        base.folderPath = String(fd.get('folderPath') || base.folderPath || '');
        base.tags = String(fd.get('tags') || '')
          .split(/[,，;；\n]/)
          .map(function (s) {
            return s.trim();
          })
          .filter(Boolean);
        base.notesMarkdown = String(fd.get('notesMarkdown') || base.notesMarkdown || '');
      }
      renderForm(base, isCreate);
      // restore typed secret values after re-render
      var form2 = qs('[data-vault-form]', detailEl);
      if (!form2) return;
      (state._formAccounts || []).forEach(function (acc) {
        var pwdEl = form2.querySelector(
          '[data-acc-field="password"][data-acc-id="' + acc.id + '"]'
        );
        if (pwdEl && acc.passwordValue) pwdEl.value = acc.passwordValue;
        var showPwdBtn = form2.querySelector(
          '[data-acc-show-password="' + acc.id + '"]'
        );
        if (showPwdBtn && acc.passwordValue && !acc.passwordClear) {
          showPwdBtn.setAttribute('data-shown', '1');
          showPwdBtn.textContent = '隐藏';
        }
      });
      (state._formAccounts || []).forEach(function (acc) {
        (acc.secrets || []).forEach(function (sec) {
          var valEl = form2.querySelector(
            '[data-sec-field="value"][data-sec-id="' +
              sec.id +
              '"][data-acc-id="' +
              acc.id +
              '"]'
          );
          if (valEl && sec.valueText) valEl.value = sec.valueText;
          var showSecBtn = form2.querySelector(
            '[data-sec-show-value="' + sec.id + '"]'
          );
          if (showSecBtn && sec.valueText && !sec.valueClear) {
            showSecBtn.setAttribute('data-shown', '1');
            showSecBtn.textContent = '隐藏';
          }
        });
      });
      state.dirty = true;
    }

    function formField(name, label, value, required) {
      return (
        '<div class="mnote-vault-field-row"><label for="vault-f-' +
        name +
        '">' +
        escapeHtml(label) +
        '</label><input id="vault-f-' +
        name +
        '" name="' +
        name +
        '" type="text" value="' +
        escapeHtml(value) +
        '"' +
        (required ? ' required' : '') +
        ' /></div>'
      );
    }

    function formSecretField(name, label, secretState, isCreate) {
      var placeholder =
        !isCreate && secretState && secretState.state === 'masked'
          ? '留空表示不修改；输入新值覆盖；点「清空」删除'
          : '可选；可用 [Key] 密文片段';
      // Editing secrets is always plaintext so users can see typos / [Key] templates.
      // View mode still masks; reveal remains explicit + audited.
      return (
        '<div class="mnote-vault-field-row"><label for="vault-f-' +
        name +
        '">' +
        escapeHtml(label) +
        '</label>' +
        '<div class="mnote-vault-secret-edit">' +
        '<input id="vault-f-' +
        name +
        '" name="' +
        name +
        '" type="text" autocomplete="off" spellcheck="false" placeholder="' +
        escapeHtml(placeholder) +
        '" data-secret-field="' +
        name +
        '" class="mnote-vault-secret-input-plain" />' +
        (!isCreate
          ? '<button type="button" data-vault-clear-secret="' + name + '">清空</button>'
          : '') +
        '</div></div>'
      );
    }

    async function loadList() {
      if (!state.rootUri) {
        state.items = [];
        renderList();
        renderDetail();
        setStatus('未绑定本地文件夹 rootUri', 'error');
        return;
      }
      setStatus('加载列表…', 'info');
      try {
        var result = await apiJson('GET', '/api/vault/list', state.rootUri, null, {
          status: state.status,
        });
        state.items = (result && result.items) || [];
        state.isAiVault = !!(result && result.isAiVault);
        state.aiVaultActorId =
          (result && result.aiVaultActorId) || state.aiVaultActorId || 'mnote-e2e';
        state.vaultRole = (result && result.vaultRole) || (state.isAiVault ? 'ai' : 'user');
        updateHeaderChrome();
        renderList();
        if (state.selectedId) {
          var still = state.items.some(function (i) {
            return i.id === state.selectedId;
          });
          if (!still && state.mode !== 'create') {
            state.selectedId = '';
            state.item = null;
          }
        }
        if (state.selectedId && state.mode !== 'create' && state.mode !== 'edit') {
          await loadItem(state.selectedId);
        } else {
          renderDetail();
        }
        var repair = result && result.folderRepair;
        var statusMsg =
          (state.isAiVault ? 'AI 密码本 · ' : '') + '共 ' + state.items.length + ' 条';
        if (repair && Number(repair.updated) > 0) {
          statusMsg += ' · 已修复分组 ' + repair.updated + ' 条';
        }
        setStatus(statusMsg, 'success');
      } catch (err) {
        setStatus(err.message || String(err), 'error');
        toast(err.message || String(err), 'error');
      }
    }

    async function repairAiFolders() {
      if (!state.isAiVault) return;
      // 你已清掉其它人的分享时，可指定默认分享者；留空则自动从 from-* / sharedFrom 推断
      var hint = window.prompt(
        '修复 AI 分组为「用户名/原分组」。\n' +
          '若库内只剩一人分享，可留空自动识别；否则填写分享者用户名（如 liaibo）：',
        'liaibo'
      );
      if (hint === null) return;
      setStatus('正在修复 AI 分组…', 'info');
      try {
        var body = {};
        var actor = String(hint || '').trim();
        if (actor) body.defaultSourceActor = actor;
        var payload = await apiJson('POST', '/api/vault/ai/repair-folders', state.rootUri, body);
        var result = (payload && payload.result) || payload || {};
        var n = Number(result.updated || 0);
        toast(
          n > 0
            ? '已修复 ' + n + ' 条 → 用户名/原分组（如 liaibo/系统）'
            : '无需修复（分组已是 用户名/原分组）',
          n > 0 ? 'success' : 'info'
        );
        await loadList();
      } catch (err) {
        setStatus(err.message || String(err), 'error');
        toast(err.message || String(err), 'error');
      }
    }

    async function loadItem(id) {
      try {
        var result = await apiJson('GET', '/api/vault/items/' + encodeURIComponent(id), state.rootUri);
        state.item = result.item || result;
        state.selectedId = id;
        state.mode = 'view';
        state.dirty = false;
        state.revealed = { password: false, apikey: false, token: false };
        state._revealedValues = {};
        state.secretDraft = { password: null, apikey: null, token: null };
        // 切换条目时重置附录密钥展开态（同一条目内 reveal 仍保留）。
        ensureFormUi().expandedSecretPanels = {};
        renderList();
        renderDetail();
      } catch (err) {
        setStatus(err.message || String(err), 'error');
        toast(err.message || String(err), 'error');
      }
    }

    async function saveForm(form, isCreate) {
      snapshotFormSlots(form);
      var fd = new FormData(form);
      var title = String(fd.get('title') || '').trim();
      if (!title) {
        toast('标题不能为空', 'error');
        return;
      }
      var tagsRaw = String(fd.get('tags') || '');
      var tags = tagsRaw
        .split(/[,，;；\n]/)
        .map(function (s) {
          return s.trim();
        })
        .filter(Boolean);
      var folderPath = normalizeFolderPath(String(fd.get('folderPath') || '').trim());
      var accounts = (state._formAccounts || [])
        .map(function (acc) {
          // Prefer live input draft; fall back to revealed draft left by re-render inject.
          var raw = String(acc.passwordValue || '');
          if (
            !raw &&
            acc.passwordState &&
            acc.passwordState.state === 'revealed' &&
            acc.passwordState.value
          ) {
            raw = String(acc.passwordState.value);
          }
          if (/^[•*·]+$/.test(raw) || raw === '••••••••') {
            toast('不能将掩码写回 password', 'error');
            throw new Error('mask');
          }
          var nestedSecrets = (acc.secrets || []).map(function (sec) {
            var sraw = String(sec.valueText || '');
            if (
              !sraw &&
              sec.valueState &&
              sec.valueState.state === 'revealed' &&
              sec.valueState.value
            ) {
              sraw = String(sec.valueState.value);
            }
            if (/^[•*·]+$/.test(sraw) || sraw === '••••••••') {
              toast('不能将掩码写回 secret', 'error');
              throw new Error('mask');
            }
            var sslot = {
              id: sec.id || undefined,
              kind: sec.kind || 'apikey',
              label: String(sec.label || '').trim() || null,
              accountId: acc.id || null,
            };
            if (isCreate) {
              if (sraw) sslot.value = sraw;
            } else if (sec.valueClear) {
              sslot.value = { clear: true };
            } else if (sraw) {
              sslot.value = { set: sraw };
            } else if (sec.valueState && sec.valueState.state === 'masked') {
              sslot._keep = true;
            }
            return sslot;
          });
          var slot = {
            id: acc.id && String(acc.id).indexOf('acc_') === 0 ? acc.id : acc.id || undefined,
            label: String(acc.label || '').trim() || null,
            username: String(acc.username || '').trim() || null,
            email: String(acc.email || '').trim() || null,
            passwordHint: String(acc.passwordHint || '').trim() || null,
            secrets: nestedSecrets,
          };
          if (isCreate) {
            if (raw) slot.password = raw;
          } else if (acc.passwordClear) {
            slot.password = { clear: true };
          } else if (raw) {
            slot.password = { set: raw };
          }
          return slot;
        })
        .filter(function (slot) {
          return (
            slot.label ||
            slot.username ||
            slot.email ||
            slot.passwordHint ||
            slot.password ||
            (slot.secrets && slot.secrets.length)
          );
        });
      // Flatten nested secrets for top-level API field (compat + server rebuild).
      var secrets = [];
      accounts.forEach(function (acc) {
        (acc.secrets || []).forEach(function (s) {
          secrets.push(s);
        });
      });

      // Edit full-replace: masked fields that were not retyped carry `_keep`.
      // Do NOT reveal them client-side (avoid race / drop). Strip `_keep` and omit
      // value/password; server merges previous secrets by id. Explicit clear uses
      // `{ clear: true }` → empty string on the wire and is not restored.
      function stripKeepMarkers(list) {
        return (list || []).map(function (s) {
          var copy = Object.assign({}, s);
          delete copy._keep;
          return copy;
        });
      }

      if (!isCreate) {
        // accounts keep password when not retyped and not cleared
        for (var ai = 0; ai < accounts.length; ai++) {
          var a = accounts[ai];
          if (!a.password && a.id) {
            var draftA = (state._formAccounts || []).find(function (x) {
              return x.id === a.id;
            });
            if (
              draftA &&
              !draftA.passwordClear &&
              draftA.passwordState &&
              draftA.passwordState.state === 'masked'
            ) {
              a._keep = true;
            }
          }
        }
        accounts = stripKeepMarkers(accounts);
        accounts.forEach(function (acc) {
          if (acc.secrets && acc.secrets.length) {
            acc.secrets = stripKeepMarkers(acc.secrets);
          }
        });
        secrets = [];
        accounts.forEach(function (acc) {
          (acc.secrets || []).forEach(function (s) {
            secrets.push(s);
          });
        });
      } else {
        // create: drop empty secret shells
        accounts.forEach(function (acc) {
          acc.secrets = (acc.secrets || []).filter(function (s) {
            return s.value || s.label;
          });
        });
        secrets = [];
        accounts.forEach(function (acc) {
          (acc.secrets || []).forEach(function (s) {
            secrets.push(s);
          });
        });
      }

      var urls = collectFormUrls(form);
      var body = {
        title: title,
        url: urls[0] || null,
        urls: urls,
        folderPath: folderPath || null,
        tags: tags,
        notesMarkdown: String(fd.get('notesMarkdown') || ''),
        accounts: accounts,
        secrets: secrets,
        syncAiShare: true,
      };

      try {
        var result;
        if (isCreate) {
          result = await apiJson('POST', '/api/vault/items', state.rootUri, body);
        } else {
          body.baseRevision = state.item && state.item.revision;
          result = await apiJson(
            'PATCH',
            '/api/vault/items/' + encodeURIComponent(state.selectedId),
            state.rootUri,
            body
          );
        }
        state.item = result.item || result;
        state.selectedId = state.item.id;
        state.mode = 'view';
        state.dirty = false;
        state.secretDraft = { password: null, apikey: null, token: null };
        state._createDefaults = null;
        var msg = isCreate ? '已创建' : '已保存';
        var aiSync = result && result.aiShareSync;
        if (aiSync && aiSync.ok) {
          msg += ' · 已同步 AI 副本';
        } else if (aiSync && aiSync.ok === false) {
          msg += ' · AI 同步未完成（' + (aiSync.message || aiSync.code || '') + '）';
        }
        toast(msg, aiSync && aiSync.ok === false ? 'info' : 'success');
        setStatus(msg, 'success');
        await loadList();
        await loadItem(state.selectedId);
      } catch (err) {
        if (err.message === 'mask') return;
        setStatus(err.message || String(err), 'error');
        toast(err.message || String(err), 'error');
      }
    }

    /** 仅拉取密文 key 列表（L0，无明文），供编辑表单「插入密文」使用。 */
    async function fetchCipherKeys(options) {
      var opts = options || {};
      try {
        var result = await apiJson('GET', '/api/vault/cipher-book', state.rootUri);
        state.cipherKeys = (result && result.keys) || [];
        if (opts.resetRevealed) state.cipherRevealed = {};
        if (state.mode === 'create' || state.mode === 'edit') {
          refreshCipherInsertSelect();
        }
        return state.cipherKeys;
      } catch (err) {
        if (!opts.silent) {
          setStatus(err.message || String(err), 'error');
          toast(err.message || String(err), 'error');
        }
        throw err;
      }
    }

    async function loadCipherBook() {
      try {
        await fetchCipherKeys({ resetRevealed: true });
        renderCipherBook();
        setStatus('密文簿 ' + state.cipherKeys.length + ' 个 key', 'info');
      } catch (err) {
        // fetchCipherKeys 已 toast
      }
    }

    /** 判断输入是否支持插入 [Key] 密文片段（用户名/邮箱/密码/附录密钥值）。 */
    function isCipherInsertTarget(el) {
      if (!el || !(el instanceof HTMLElement)) return false;
      if (el.tagName !== 'INPUT' && el.tagName !== 'TEXTAREA') return false;
      if (el.disabled || el.readOnly) return false;
      var acc = el.getAttribute('data-acc-field');
      if (acc === 'username' || acc === 'email' || acc === 'password') return true;
      if (el.getAttribute('data-sec-field') === 'value') return true;
      return false;
    }

    function rememberCipherInsertTarget(el) {
      if (isCipherInsertTarget(el)) {
        state.lastCipherInsertTarget = el;
        try {
          if (typeof el.selectionStart === 'number' && typeof el.selectionEnd === 'number') {
            state.lastCipherInsertRange = {
              start: el.selectionStart,
              end: el.selectionEnd,
            };
          }
        } catch (_e) {
          /* ignore */
        }
      }
    }

    function captureCipherInsertRange(el) {
      if (!isCipherInsertTarget(el)) return;
      state.lastCipherInsertTarget = el;
      try {
        if (typeof el.selectionStart === 'number' && typeof el.selectionEnd === 'number') {
          state.lastCipherInsertRange = {
            start: el.selectionStart,
            end: el.selectionEnd,
          };
        }
      } catch (_e) {
        /* ignore */
      }
    }

    function resolveCipherInsertTarget(form) {
      var active = document.activeElement;
      if (form && active && form.contains(active) && isCipherInsertTarget(active)) {
        captureCipherInsertRange(active);
        return active;
      }
      var remembered = state.lastCipherInsertTarget;
      if (
        remembered &&
        form &&
        form.contains(remembered) &&
        isCipherInsertTarget(remembered)
      ) {
        return remembered;
      }
      // 回退：第一个密码框 → 用户名 → 邮箱 → 密钥值
      if (!form) return null;
      state.lastCipherInsertRange = null;
      return (
        form.querySelector('[data-acc-field="password"]') ||
        form.querySelector('[data-acc-field="username"]') ||
        form.querySelector('[data-acc-field="email"]') ||
        form.querySelector('[data-sec-field="value"]')
      );
    }

    /** 在光标处插入 `[Key]`；不改服务端解析规则。 */
    function insertCipherKeyIntoField(input, key) {
      if (!input || !key) return false;
      var token = '[' + key + ']';
      var start;
      var end;
      var range = state.lastCipherInsertRange;
      if (
        range &&
        state.lastCipherInsertTarget === input &&
        typeof range.start === 'number' &&
        typeof range.end === 'number'
      ) {
        start = range.start;
        end = range.end;
      } else {
        start =
          typeof input.selectionStart === 'number'
            ? input.selectionStart
            : input.value.length;
        end =
          typeof input.selectionEnd === 'number' ? input.selectionEnd : input.value.length;
      }
      // 钳制到当前值长度（输入可能在失焦后被改过）
      var len = input.value.length;
      if (start < 0) start = 0;
      if (end < 0) end = 0;
      if (start > len) start = len;
      if (end > len) end = len;
      if (end < start) end = start;
      var before = input.value.slice(0, start);
      var after = input.value.slice(end);
      input.value = before + token + after;
      var caret = start + token.length;
      try {
        input.focus();
        input.setSelectionRange(caret, caret);
      } catch (_e) {
        /* ignore non-text inputs */
      }
      state.dirty = true;
      state.lastCipherInsertTarget = input;
      state.lastCipherInsertRange = { start: caret, end: caret };
      // 触发已绑定的 input 监听
      try {
        input.dispatchEvent(new Event('input', { bubbles: true }));
      } catch (_e2) {
        /* older engines */
      }
      return true;
    }

    /** 顶栏「插入密文」options HTML（与密文簿 key 列表同步）。 */
    function cipherInsertOptionsHtml() {
      var keys = state.cipherKeys || [];
      return (
        '<option value="">插入密文…</option>' +
        keys
          .map(function (k) {
            var key = (k && k.key) || k;
            if (!key) return '';
            return (
              '<option value="' +
              escapeHtml(key) +
              '">[' +
              escapeHtml(key) +
              ']</option>'
            );
          })
          .join('')
      );
    }

    function headerCipherInsertSelect() {
      return qs('[data-vault-insert-cipher]', root);
    }

    function refreshCipherInsertSelect() {
      var sel = headerCipherInsertSelect();
      if (!sel) return;
      sel.innerHTML = cipherInsertOptionsHtml();
      sel.value = '';
    }

    /**
     * 仅在新建/编辑表单时显示顶栏「插入密文」；
     * 放在密文簿旁，详情区滚动时仍可见。
     */
    function syncHeaderCipherInsertVisibility() {
      var wrap = qs('.mnote-vault-insert-cipher', root);
      if (!wrap) return;
      var editing = state.mode === 'create' || state.mode === 'edit';
      wrap.hidden = !editing;
      wrap.setAttribute('aria-hidden', editing ? 'false' : 'true');
      if (editing) refreshCipherInsertSelect();
    }

    /** 表单内记录焦点/光标，供顶栏下拉插入使用。 */
    function bindFormCipherInsertTracking(form) {
      if (!form || form.getAttribute('data-cipher-insert-bound') === '1') return;
      form.setAttribute('data-cipher-insert-bound', '1');
      form.addEventListener('focusin', function (ev) {
        var t = ev.target;
        if (t instanceof HTMLElement) rememberCipherInsertTarget(t);
      });
      form.addEventListener('focusout', function (ev) {
        var t = ev.target;
        if (t instanceof HTMLElement) captureCipherInsertRange(t);
      });
      form.addEventListener('mouseup', function (ev) {
        var t = ev.target;
        if (t instanceof HTMLElement) captureCipherInsertRange(t);
      });
      form.addEventListener('keyup', function (ev) {
        var t = ev.target;
        if (t instanceof HTMLElement) captureCipherInsertRange(t);
      });
    }

    /** 顶栏「插入密文」下拉：绑定一次，插入目标为当前编辑表单字段。 */
    function bindHeaderCipherInsertControls() {
      if (root.getAttribute('data-cipher-insert-header-bound') === '1') return;
      root.setAttribute('data-cipher-insert-header-bound', '1');
      var sel = headerCipherInsertSelect();
      if (!sel) return;
      sel.addEventListener('change', function () {
        var key = String(sel.value || '').trim();
        sel.value = '';
        if (!key) return;
        var form = qs('[data-vault-form]', detailEl);
        if (!form || (state.mode !== 'create' && state.mode !== 'edit')) {
          toast('请先新建或编辑条目', 'info');
          return;
        }
        var target = resolveCipherInsertTarget(form);
        if (!target) {
          toast('请先点击用户名 / 邮箱 / 密码 / 密钥值输入框', 'info');
          return;
        }
        if (insertCipherKeyIntoField(target, key)) {
          toast('已插入 [' + key + ']', 'success');
        }
      });
      // 失焦前点下拉时仍能记住光标：mousedown 捕获阶段
      sel.addEventListener('mousedown', function () {
        var form = qs('[data-vault-form]', detailEl);
        if (!form) return;
        var active = document.activeElement;
        if (active && form.contains(active) && active instanceof HTMLElement) {
          captureCipherInsertRange(active);
        }
      });
    }

    function renderCipherBook() {
      if (!detailEl) return;
      var rows = state.cipherKeys
        .map(function (k) {
          var key = k.key;
          var revealed = state.cipherRevealed[key];
          return (
            '<div class="mnote-vault-cipher-row" data-cipher-key="' +
            escapeHtml(key) +
            '">' +
            '<code class="mnote-vault-cipher-key">[' +
            escapeHtml(key) +
            ']</code>' +
            '<span class="mnote-vault-cipher-value">' +
            (revealed
              ? escapeHtml(revealed)
              : k.hasValue
                ? '••••••••'
                : '（空）') +
            '</span>' +
            '<span class="mnote-vault-cipher-actions">' +
            '<button type="button" data-vault-cipher-reveal="' +
            escapeHtml(key) +
            '">' +
            (revealed ? '隐藏' : '显示') +
            '</button>' +
            '<button type="button" data-vault-cipher-edit="' +
            escapeHtml(key) +
            '">改</button>' +
            '<button type="button" class="is-danger" data-vault-cipher-delete="' +
            escapeHtml(key) +
            '">删</button>' +
            '</span></div>'
          );
        })
        .join('');
      detailEl.innerHTML =
        '<div class="mnote-vault-cipher-panel" data-testid="vault-cipher-panel">' +
        '<div class="mnote-vault-detail-header">' +
        '<h2>密文簿</h2>' +
        '<div class="mnote-vault-detail-actions">' +
        '<button type="button" data-vault-cipher-close>关闭</button>' +
        '</div></div>' +

        '<form class="mnote-vault-cipher-add" data-vault-cipher-form="true">' +
        '<input name="key" placeholder="Key（如 A）" maxlength="32" required pattern="[A-Za-z0-9_]+" autocomplete="off" spellcheck="false" />' +
        '<input name="value" type="text" class="mnote-vault-secret-input-plain" placeholder="片段明文（输入可见）" required autocomplete="off" spellcheck="false" />' +
        '<button type="submit">添加 / 更新</button>' +
        '</form>' +
        '<div class="mnote-vault-cipher-list" data-testid="vault-cipher-list">' +
        (rows ||
          '<div class="mnote-vault-empty">尚无片段。例如 key=<code>A</code> 值为 <code>Li@</code>，密码可写 <code>Li@[A]s3cret</code>。</div>') +
        '</div></div>';
      var form = qs('[data-vault-cipher-form]', detailEl);
      if (form) {
        form.addEventListener('submit', function (ev) {
          ev.preventDefault();
          var fd = new FormData(form);
          var key = String(fd.get('key') || '').trim();
          var value = String(fd.get('value') || '');
          if (!key || !value) {
            toast('需要 Key 与片段值', 'error');
            return;
          }
          apiJson(
            'PUT',
            '/api/vault/cipher-book/' + encodeURIComponent(key),
            state.rootUri,
            { value: value }
          )
            .then(function () {
              toast('已保存 [' + key + ']', 'success');
              return loadCipherBook();
            })
            .catch(function (err) {
              toast(err.message || String(err), 'error');
            });
        });
      }
    }

    root.addEventListener('click', async function (ev) {
      var t = ev.target;
      if (!(t instanceof Element)) return;

      // View-mode URL: look like a link, open only with Ctrl/Cmd+click.
      var urlLink = t.closest('a.mnote-vault-url-link, a[data-vault-external-url]');
      if (urlLink && root.contains(urlLink)) {
        var href =
          urlLink.getAttribute('data-vault-external-url') ||
          urlLink.getAttribute('href') ||
          '';
        if (!(ev.ctrlKey || ev.metaKey)) {
          ev.preventDefault();
          return;
        }
        ev.preventDefault();
        if (href) {
          try {
            window.open(href, '_blank', 'noopener,noreferrer');
          } catch (_e) {
            /* ignore popup block */
          }
        }
        return;
      }

      var toggle = t.closest('[data-vault-toggle-folder]');
      if (toggle && root.contains(toggle)) {
        var fpath = toggle.getAttribute('data-vault-toggle-folder') || '';
        toggleCollapseKey(fpath);
        renderList();
        return;
      }

      var itemBtn = t.closest('[data-vault-item-id]');
      if (itemBtn && root.contains(itemBtn)) {
        var id = itemBtn.getAttribute('data-vault-item-id');
        if (!confirmDiscard()) return;
        state.mode = 'view';
        loadItem(id);
        return;
      }

      if (t.closest('[data-vault-create], [data-vault-new]')) {
        if (!confirmDiscard()) return;
        state.mode = 'create';
        state.selectedId = '';
        state.item = null;
        state._createDefaults = null;
        state.dirty = false;
        state.secretDraft = { password: null, apikey: null, token: null };
        renderList();
        renderDetail();
        return;
      }

      if (t.closest('[data-vault-toggle-empty-fields]')) {
        state.showEmptyFields = !state.showEmptyFields;
        if (state.item && state.mode === 'view') renderView(state.item);
        return;
      }

      // 附录密钥折叠/展开（详情与编辑共用）；写入 state，避免 reveal 重绘后丢失。
      var secretsToggle = t.closest('[data-vault-toggle-secrets]');
      if (secretsToggle && root.contains(secretsToggle)) {
        var panel =
          secretsToggle.closest('[data-vault-secrets-panel]') ||
          secretsToggle.closest('[data-vault-account-secrets]');
        if (panel) {
          var bodyEl = panel.querySelector('.mnote-vault-account-secrets-body');
          var collapsed = panel.classList.contains('is-collapsed');
          var nextExpanded = !!collapsed;
          var accKey =
            panel.getAttribute('data-vault-secrets-acc') ||
            panel.getAttribute('data-vault-account-secrets') ||
            'default';
          setSecretsPanelExpanded(accKey, nextExpanded);
          if (nextExpanded) {
            panel.classList.remove('is-collapsed');
            if (bodyEl) bodyEl.hidden = false;
            secretsToggle.setAttribute('aria-expanded', 'true');
            var chevOpen = secretsToggle.querySelector('.mnote-vault-secrets-chevron');
            if (chevOpen) chevOpen.textContent = '▼';
          } else {
            panel.classList.add('is-collapsed');
            if (bodyEl) bodyEl.hidden = true;
            secretsToggle.setAttribute('aria-expanded', 'false');
            var chevClose = secretsToggle.querySelector('.mnote-vault-secrets-chevron');
            if (chevClose) chevClose.textContent = '▶';
          }
        }
        return;
      }

      if (t.closest('[data-vault-add-url]')) {
        var formAddUrl = qs('[data-vault-form]', detailEl);
        if (formAddUrl) snapshotFormSlots(formAddUrl);
        state._formUrls = state._formUrls || [''];
        state._formUrls.push('');
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }
      var removeUrl = t.closest('[data-vault-remove-url]');
      if (removeUrl) {
        var urlIdx = parseInt(removeUrl.getAttribute('data-vault-remove-url'), 10);
        var formRmUrl = qs('[data-vault-form]', detailEl);
        if (formRmUrl) snapshotFormSlots(formRmUrl);
        state._formUrls = (state._formUrls || []).filter(function (_u, i) {
          return i !== urlIdx;
        });
        if (!state._formUrls.length) state._formUrls = [''];
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }

      if (t.closest('[data-vault-add-account-slot]')) {
        var formAddAcc = qs('[data-vault-form]', detailEl);
        if (formAddAcc) snapshotFormSlots(formAddAcc);
        state._formAccounts = state._formAccounts || [];
        state._formAccounts.push({
          id: newClientId('acc'),
          label: '',
          username: '',
          email: '',
          passwordHint: '',
          passwordState: { state: 'absent' },
          passwordClear: false,
          passwordValue: '',
          secrets: [],
        });
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }
      var removeAcc = t.closest('[data-vault-remove-account]');
      if (removeAcc) {
        var rid = removeAcc.getAttribute('data-vault-remove-account');
        var formRmAcc = qs('[data-vault-form]', detailEl);
        if (formRmAcc) snapshotFormSlots(formRmAcc);
        state._formAccounts = (state._formAccounts || []).filter(function (a) {
          return a.id !== rid;
        });
        if (!state._formAccounts.length) {
          state._formAccounts.push({
            id: newClientId('acc'),
            label: '',
            username: '',
            email: '',
            passwordHint: '',
            passwordState: { state: 'absent' },
            passwordClear: false,
            passwordValue: '',
            secrets: [],
          });
        }
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }
      var addSecBtn = t.closest('[data-vault-add-secret-slot]');
      if (addSecBtn) {
        var formAddSec = qs('[data-vault-form]', detailEl);
        if (formAddSec) snapshotFormSlots(formAddSec);
        var accIdForSec =
          addSecBtn.getAttribute('data-acc-id') ||
          (addSecBtn.closest('[data-vault-account-slot]') &&
            addSecBtn.closest('[data-vault-account-slot]').getAttribute('data-vault-account-slot'));
        var targetAcc = (state._formAccounts || []).find(function (a) {
          return a.id === accIdForSec;
        });
        if (!targetAcc && state._formAccounts && state._formAccounts.length) {
          targetAcc = state._formAccounts[0];
        }
        if (targetAcc) {
          targetAcc.secrets = targetAcc.secrets || [];
          targetAcc.secrets.push({
            id: newClientId('sec'),
            kind: 'apikey',
            label: '',
            valueState: { state: 'absent' },
            valueClear: false,
            valueText: '',
            accountId: targetAcc.id,
          });
        }
        // 添加密钥后展开对应附录密钥面板（写入 state，re-render 后仍展开）。
        if (targetAcc) {
          setSecretsPanelExpanded(accountUiKey(targetAcc.id), true);
        } else if (accIdForSec) {
          setSecretsPanelExpanded(accountUiKey(accIdForSec), true);
        }
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }
      var removeSec = t.closest('[data-vault-remove-secret]');
      if (removeSec) {
        var rsid = removeSec.getAttribute('data-vault-remove-secret');
        var rAccId = removeSec.getAttribute('data-acc-id');
        var formRmSec = qs('[data-vault-form]', detailEl);
        if (formRmSec) snapshotFormSlots(formRmSec);
        (state._formAccounts || []).forEach(function (acc) {
          if (rAccId && acc.id !== rAccId) return;
          acc.secrets = (acc.secrets || []).filter(function (s) {
            return s.id !== rsid;
          });
        });
        reRenderFormKeepingSlots(state.mode === 'create');
        return;
      }
      var showAccPwd = t.closest('[data-acc-show-password]');
      if (showAccPwd) {
        var said = showAccPwd.getAttribute('data-acc-show-password');
        var pwdShowInput = detailEl.querySelector(
          '[data-acc-field="password"][data-acc-id="' + said + '"]'
        );
        // 已显示则收起：清空输入框（留空=保存时不改），不触发 passwordClear
        if (showAccPwd.getAttribute('data-shown') === '1') {
          if (pwdShowInput) {
            pwdShowInput.value = '';
            pwdShowInput.placeholder = '留空不改；输入新值覆盖';
          }
          (state._formAccounts || []).forEach(function (a) {
            if (a.id === said) {
              a.passwordValue = '';
              a.passwordClear = false;
            }
          });
          showAccPwd.setAttribute('data-shown', '0');
          showAccPwd.textContent = '显示';
          return;
        }
        if (!state.selectedId) {
          toast('请先保存条目后再查看已存密码', 'info');
          return;
        }
        showAccPwd.disabled = true;
        var revealPwdBody = { field: 'password' };
        if (said) revealPwdBody.accountId = said;
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/reveal',
          state.rootUri,
          revealPwdBody
        )
          .then(function (result) {
            var secret = result && result.secret;
            showAccPwd.disabled = false;
            if (!secret || secret.state !== 'revealed') {
              toast('该账号未设置密码', 'info');
              return;
            }
            // 编辑优先写回 [Key] 模板，避免把展开明文误存为新值
            var editVal =
              secret.template != null && secret.template !== ''
                ? String(secret.template)
                : String(secret.value || '');
            if (pwdShowInput) {
              pwdShowInput.value = editVal;
              pwdShowInput.focus();
              try {
                var len = editVal.length;
                pwdShowInput.setSelectionRange(len, len);
              } catch (_e) {
                /* ignore */
              }
            }
            (state._formAccounts || []).forEach(function (a) {
              if (a.id === said) {
                a.passwordValue = editVal;
                a.passwordClear = false;
              }
            });
            state.dirty = true;
            showAccPwd.setAttribute('data-shown', '1');
            showAccPwd.textContent = '隐藏';
            if (secret.missingCipherKeys && secret.missingCipherKeys.length) {
              toast(
                '密文簿缺少 key: ' + secret.missingCipherKeys.join(', '),
                'info'
              );
            }
          })
          .catch(function (err) {
            showAccPwd.disabled = false;
            toast(err.message || String(err), 'error');
          });
        return;
      }
      var clearAccPwd = t.closest('[data-acc-clear-password]');
      if (clearAccPwd) {
        var caid = clearAccPwd.getAttribute('data-acc-clear-password');
        (state._formAccounts || []).forEach(function (a) {
          if (a.id === caid) {
            a.passwordClear = true;
            a.passwordValue = '';
            a.passwordState = { state: 'absent' };
          }
        });
        var pwdInput = detailEl.querySelector(
          '[data-acc-field="password"][data-acc-id="' + caid + '"]'
        );
        if (pwdInput) {
          pwdInput.value = '';
          pwdInput.placeholder = '（将清空）';
        }
        var showBtnAfterClear = detailEl.querySelector(
          '[data-acc-show-password="' + caid + '"]'
        );
        if (showBtnAfterClear) {
          showBtnAfterClear.setAttribute('data-shown', '0');
          showBtnAfterClear.textContent = '显示';
        }
        state.dirty = true;
        toast('该账号密码将在保存时清空', 'info');
        return;
      }
      var showSecVal = t.closest('[data-sec-show-value]');
      if (showSecVal) {
        var ssid = showSecVal.getAttribute('data-sec-show-value');
        var secShowInput = detailEl.querySelector(
          '[data-sec-field="value"][data-sec-id="' + ssid + '"]'
        );
        if (showSecVal.getAttribute('data-shown') === '1') {
          if (secShowInput) {
            secShowInput.value = '';
            secShowInput.placeholder = '留空不改；输入新值覆盖';
          }
          (state._formAccounts || []).forEach(function (acc) {
            (acc.secrets || []).forEach(function (s) {
              if (s.id === ssid) {
                s.valueText = '';
                s.valueClear = false;
              }
            });
          });
          showSecVal.setAttribute('data-shown', '0');
          showSecVal.textContent = '显示';
          return;
        }
        if (!state.selectedId) {
          toast('请先保存条目后再查看已存密钥', 'info');
          return;
        }
        showSecVal.disabled = true;
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/reveal',
          state.rootUri,
          { secretId: ssid }
        )
          .then(function (result) {
            var secret = result && result.secret;
            showSecVal.disabled = false;
            if (!secret || secret.state !== 'revealed') {
              toast('该密钥未设置', 'info');
              return;
            }
            var editVal =
              secret.template != null && secret.template !== ''
                ? String(secret.template)
                : String(secret.value || '');
            if (secShowInput) {
              secShowInput.value = editVal;
              secShowInput.focus();
            }
            (state._formAccounts || []).forEach(function (acc) {
              (acc.secrets || []).forEach(function (s) {
                if (s.id === ssid) {
                  s.valueText = editVal;
                  s.valueClear = false;
                }
              });
            });
            state.dirty = true;
            showSecVal.setAttribute('data-shown', '1');
            showSecVal.textContent = '隐藏';
            if (secret.missingCipherKeys && secret.missingCipherKeys.length) {
              toast(
                '密文簿缺少 key: ' + secret.missingCipherKeys.join(', '),
                'info'
              );
            }
          })
          .catch(function (err) {
            showSecVal.disabled = false;
            toast(err.message || String(err), 'error');
          });
        return;
      }
      var clearSecVal = t.closest('[data-sec-clear-value]');
      if (clearSecVal) {
        var csid = clearSecVal.getAttribute('data-sec-clear-value');
        (state._formAccounts || []).forEach(function (acc) {
          (acc.secrets || []).forEach(function (s) {
            if (s.id === csid) {
              s.valueClear = true;
              s.valueText = '';
              s.valueState = { state: 'absent' };
            }
          });
        });
        var secInput = detailEl.querySelector(
          '[data-sec-field="value"][data-sec-id="' + csid + '"]'
        );
        if (secInput) {
          secInput.value = '';
          secInput.placeholder = '（将清空）';
        }
        var showSecAfterClear = detailEl.querySelector(
          '[data-sec-show-value="' + csid + '"]'
        );
        if (showSecAfterClear) {
          showSecAfterClear.setAttribute('data-shown', '0');
          showSecAfterClear.textContent = '显示';
        }
        state.dirty = true;
        toast('该密钥将在保存时清空', 'info');
        return;
      }

      if (t.closest('[data-vault-share-ai]')) {
        if (!state.selectedId || !state.rootUri) return;
        if (state.isAiVault) {
          toast('当前已是 AI 密码本，无需再共享', 'info');
          return;
        }
        var shareTitle =
          (state.item && state.item.title) || state.selectedId;
        var alreadyShared = itemIsSharedToAi(state.item);
        if (!(await window.mnote.confirm(
            alreadyShared
              ? '将「' +
                  shareTitle +
                  '」重新同步到已关联的 AI 密码本副本？\n' +
                  '会更新目标条目内容与缺失密文 key（目标已有 key 不覆盖）。'
              : '将「' +
                  shareTitle +
                  '」复制到 AI 密码本（默认账号 mnote-e2e 的 my-space vault）？\n' +
                  '会新建一条带 ai-shared 标签的副本，并在本条目标记「已共享」；原条目保留。\n' +
                  '密文 [Key] 模板原样复制，并自动同步缺失密文 key。'
          ))
        ) {
          return;
        }
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/share-to-ai',
          state.rootUri,
          { syncCipherKeys: true }
        )
          .then(function (result) {
            var target = (result && result.targetActorId) || 'mnote-e2e';
            var newId = result && result.item && result.item.id;
            var cipher = (result && result.cipherSync) || {};
            var copied = cipher.copiedKeys || cipher.copied || [];
            var missing = cipher.missingInSource || [];
            var parts = [
              result && result.updatedExisting
                ? '已同步 AI 副本（' + target + '）'
                : '已共享到 AI 密码本（' + target + '）',
            ];
            if (newId) parts.push(newId);
            if (copied.length) parts.push('同步密文 key: ' + copied.join(', '));
            if (missing.length) {
              parts.push('源缺 key: ' + missing.join(', '));
            }
            toast(parts.join(' · '), missing.length ? 'info' : 'success');
            setStatus(parts.join(' · '), missing.length ? 'info' : 'success');
            // Refresh source item so shared banner / button label update
            return loadItem(state.selectedId).then(function () {
              return loadList();
            });
          })
          .catch(async function (err) {
            toast(err.message || String(err), 'error');
            setStatus(err.message || String(err), 'error');
          });
        return;
      }

      if (t.closest('[data-vault-unshare-ai]')) {
        if (!state.selectedId || !state.rootUri) return;
        if (state.isAiVault) {
          toast('请在用户密码箱中撤销共享', 'info');
          return;
        }
        if (!itemIsSharedToAi(state.item)) {
          toast('当前条目未共享到 AI', 'info');
          return;
        }
        var unshareTitle =
          (state.item && state.item.title) || state.selectedId;
        var linkActor =
          (state.item &&
            state.item.sharedToAi &&
            state.item.sharedToAi.targetActorId) ||
          'mnote-e2e';
        if (!(await window.mnote.confirm(
            '撤销「' +
              unshareTitle +
              '」对 AI 密码本（' +
              linkActor +
              '）的共享？\n' +
              '将清除本条「已共享」标记，并把 AI 密码本中的副本移入回收站。\n' +
              '原条目与密文簿 key 保留；AI 侧密文 key 不删除（可能被其它条目引用）。'
          ))
        ) {
          return;
        }
        apiJson(
          'POST',
          '/api/vault/items/' +
            encodeURIComponent(state.selectedId) +
            '/unshare-from-ai',
          state.rootUri,
          {}
        )
          .then(function (result) {
            var target = (result && result.targetActorId) || linkActor;
            var parts = [];
            if (result && result.wasShared === false) {
              parts.push('本来就未共享');
            } else {
              parts.push('已撤销共享（' + target + '）');
              if (result && result.targetDeleted) {
                parts.push('AI 副本已移入回收站');
              } else if (result && result.removedTargetId) {
                parts.push('AI 副本已不存在或已在回收站');
              }
            }
            toast(parts.join(' · '), 'success');
            setStatus(parts.join(' · '), 'success');
            return loadItem(state.selectedId).then(function () {
              return loadList();
            });
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
            setStatus(err.message || String(err), 'error');
          });
        return;
      }

      if (t.closest('[data-vault-repair-ai-folders]')) {
        repairAiFolders();
        return;
      }
      if (t.closest('[data-vault-cipher-book]')) {
        if (!confirmDiscard()) return;
        state.mode = 'cipher';
        state.dirty = false;
        loadCipherBook();
        return;
      }
      if (t.closest('[data-vault-cipher-close]')) {
        state.mode = state.selectedId ? 'view' : 'view';
        if (state.selectedId) loadItem(state.selectedId);
        else {
          state.item = null;
          renderDetail();
        }
        return;
      }
      var cipherReveal = t.closest('[data-vault-cipher-reveal]');
      if (cipherReveal) {
        var ck = cipherReveal.getAttribute('data-vault-cipher-reveal');
        if (state.cipherRevealed[ck]) {
          delete state.cipherRevealed[ck];
          renderCipherBook();
          return;
        }
        apiJson(
          'POST',
          '/api/vault/cipher-book/' + encodeURIComponent(ck) + '/reveal',
          state.rootUri,
          {}
        )
          .then(function (result) {
            var secret = result && result.secret;
            if (secret && secret.state === 'revealed') {
              state.cipherRevealed[ck] = secret.value;
              renderCipherBook();
            }
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }
      var cipherEdit = t.closest('[data-vault-cipher-edit]');
      if (cipherEdit) {
        var ek = cipherEdit.getAttribute('data-vault-cipher-edit');
        var nv = window.prompt('更新 [' + ek + '] 的片段值（输入明文）', '');
        if (nv == null || nv === '') return;
        apiJson(
          'PUT',
          '/api/vault/cipher-book/' + encodeURIComponent(ek),
          state.rootUri,
          { value: nv }
        )
          .then(function () {
            toast('已更新 [' + ek + ']', 'success');
            delete state.cipherRevealed[ek];
            return loadCipherBook();
          })
          .catch(async function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }
      var cipherDel = t.closest('[data-vault-cipher-delete]');
      if (cipherDel) {
        var dk = cipherDel.getAttribute('data-vault-cipher-delete');
        if (!(await window.mnote.confirm('删除密文簿 [' + dk + ']？引用它的密码将无法完整展开。'))) return;
        apiJson(
          'DELETE',
          '/api/vault/cipher-book/' + encodeURIComponent(dk),
          state.rootUri
        )
          .then(function () {
            toast('已删除 [' + dk + ']', 'success');
            delete state.cipherRevealed[dk];
            return loadCipherBook();
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }

      if (t.closest('[data-vault-refresh]')) {
        if (!confirmDiscard()) return;
        state.mode = 'view';
        state.dirty = false;
        loadList();
        return;
      }

      if (t.closest('[data-vault-tab="active"]')) {
        if (!confirmDiscard()) return;
        state.status = 'active';
        state.mode = 'view';
        state.selectedId = '';
        state.item = null;
        if (tabActive) tabActive.classList.add('is-active');
        if (tabDeleted) tabDeleted.classList.remove('is-active');
        root.setAttribute('data-status', 'active');
        loadList();
        return;
      }
      if (t.closest('[data-vault-tab="deleted"]')) {
        if (!confirmDiscard()) return;
        state.status = 'deleted';
        state.mode = 'view';
        state.selectedId = '';
        state.item = null;
        if (tabDeleted) tabDeleted.classList.add('is-active');
        if (tabActive) tabActive.classList.remove('is-active');
        root.setAttribute('data-status', 'deleted');
        loadList();
        return;
      }

      if (t.closest('[data-vault-edit]')) {
        state.mode = 'edit';
        state.dirty = false;
        state.secretDraft = { password: null, apikey: null, token: null };
        renderDetail();
        return;
      }
      if (t.closest('[data-vault-cancel]')) {
        if (!confirmDiscard()) return;
        state.mode = state.selectedId ? 'view' : 'view';
        state.dirty = false;
        if (state.selectedId) loadItem(state.selectedId);
        else {
          state.item = null;
          renderDetail();
        }
        return;
      }

      var clearSecVal = t.closest('[data-vault-clear-sec-value]');
      if (clearSecVal) {
        var csid = clearSecVal.getAttribute('data-vault-clear-sec-value');
        var csAcc = clearSecVal.getAttribute('data-acc-id');
        var formCs = qs('[data-vault-form]', detailEl);
        if (formCs) snapshotFormSlots(formCs);
        (state._formAccounts || []).forEach(function (acc) {
          if (csAcc && acc.id !== csAcc) return;
          (acc.secrets || []).forEach(function (sec) {
            if (sec.id !== csid) return;
            sec.valueClear = true;
            sec.valueState = { state: 'absent' };
            sec.valueText = '';
          });
        });
        state.dirty = true;
        reRenderFormKeepingSlots(state.mode === 'create');
        toast('密钥将在保存时清空', 'info');
        return;
      }

      var clearBtn = t.closest('[data-vault-clear-secret]');
      if (clearBtn) {
        var cf = clearBtn.getAttribute('data-vault-clear-secret');
        state.secretDraft[cf] = 'clear';
        state.dirty = true;
        var input = detailEl.querySelector('[data-secret-field="' + cf + '"]');
        if (input) {
          input.value = '';
          input.placeholder = '（将清空）';
        }
        toast(cf + ' 将在保存时清空', 'info');
        return;
      }

      if (t.closest('[data-vault-delete]')) {
        if (!(await window.mnote.confirm('确定将条目移入密码箱回收站？'))) return;
        apiJson(
          'DELETE',
          '/api/vault/items/' + encodeURIComponent(state.selectedId),
          state.rootUri
        )
          .then(function () {
            toast('已移入回收站', 'success');
            state.selectedId = '';
            state.item = null;
            return loadList();
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }
      if (t.closest('[data-vault-restore]')) {
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/restore',
          state.rootUri,
          {}
        )
          .then(function () {
            toast('已恢复', 'success');
            state.status = 'active';
            if (tabActive) tabActive.classList.add('is-active');
            if (tabDeleted) tabDeleted.classList.remove('is-active');
            return loadList();
          })
          .catch(async function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }
      if (t.closest('[data-vault-purge]')) {
        if (!(await window.mnote.confirm('永久删除后无法恢复，确定？'))) return;
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/purge',
          state.rootUri,
          {}
        )
          .then(function () {
            toast('已永久删除', 'success');
            state.selectedId = '';
            state.item = null;
            return loadList();
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }

      var revealBtn = t.closest('[data-vault-reveal]');
      if (revealBtn) {
        var field = revealBtn.getAttribute('data-vault-reveal');
        var accountId = revealBtn.getAttribute('data-vault-account-id') || '';
        var secretId = revealBtn.getAttribute('data-vault-secret-id') || '';
        var rkey = revealKey(field, accountId, secretId);
        if (state.revealed[rkey]) {
          state.revealed[rkey] = false;
          renderDetail();
          return;
        }
        var revealBody = { field: field };
        if (accountId) revealBody.accountId = accountId;
        if (secretId) {
          revealBody.secretId = secretId;
          if (!field || field === 'value') {
            // appendix secret: field optional on server when secretId present
            delete revealBody.field;
          }
        }
        apiJson(
          'POST',
          '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/reveal',
          state.rootUri,
          revealBody
        )
          .then(function (result) {
            var secret = result && result.secret;
            state._revealedValues = state._revealedValues || {};
            if (secret && secret.state === 'revealed') {
              state._revealedValues[rkey] = secret.value || '';
              state.revealed[rkey] = true;
              if (secret.missingCipherKeys && secret.missingCipherKeys.length) {
                toast(
                  '密文簿缺少 key: ' + secret.missingCipherKeys.join(', '),
                  'info'
                );
              }
            } else {
              toast('该字段未设置', 'info');
            }
            renderDetail();
          })
          .catch(function (err) {
            toast(err.message || String(err), 'error');
          });
        return;
      }

      var copyBtn = t.closest('[data-vault-copy-secret]');
      if (copyBtn) {
        var cfield = copyBtn.getAttribute('data-vault-copy-secret');
        var cAccountId = copyBtn.getAttribute('data-vault-account-id') || '';
        var cSecretId = copyBtn.getAttribute('data-vault-secret-id') || '';
        var ckey = revealKey(cfield, cAccountId, cSecretId);
        var doCopy = function (text) {
          if (!text) {
            toast('无可复制内容', 'info');
            return;
          }
          if (navigator.clipboard && navigator.clipboard.writeText) {
            navigator.clipboard.writeText(text).then(
              function () {
                toast('已复制', 'success');
              },
              function () {
                toast('复制失败', 'error');
              }
            );
          } else {
            toast('剪贴板不可用', 'error');
          }
        };
        if (state.revealed[ckey] && state._revealedValues && state._revealedValues[ckey]) {
          doCopy(state._revealedValues[ckey]);
        } else {
          var copyBody = { field: cfield };
          if (cAccountId) copyBody.accountId = cAccountId;
          if (cSecretId) {
            copyBody.secretId = cSecretId;
            if (!cfield || cfield === 'value') delete copyBody.field;
          }
          apiJson(
            'POST',
            '/api/vault/items/' + encodeURIComponent(state.selectedId) + '/reveal',
            state.rootUri,
            copyBody
          )
            .then(function (result) {
              var secret = result && result.secret;
              if (secret && secret.state === 'revealed') {
                doCopy(secret.value || '');
              } else {
                toast('该字段未设置', 'info');
              }
            })
            .catch(function (err) {
              toast(err.message || String(err), 'error');
            });
        }
        return;
      }

      var copyPlain = t.closest('[data-vault-copy]');
      if (copyPlain) {
        var text = copyPlain.getAttribute('data-vault-copy') || '';
        if (navigator.clipboard && navigator.clipboard.writeText) {
          navigator.clipboard.writeText(text).then(function () {
            toast('已复制', 'success');
          });
        }
      }
    });

    if (searchEl) {
      searchEl.addEventListener('input', function () {
        renderList();
      });
    }

    // 顶栏「插入密文」：固定在密文簿旁，仅编辑态显示
    bindHeaderCipherInsertControls();
    syncHeaderCipherInsertVisibility();

    // deep-link id
    try {
      var params = new URLSearchParams(window.location.search);
      var deepId = params.get('id');
      if (deepId) state.selectedId = deepId;
      var st = params.get('status');
      if (st === 'deleted') {
        state.status = 'deleted';
        if (tabDeleted) tabDeleted.classList.add('is-active');
        if (tabActive) tabActive.classList.remove('is-active');
      }
    } catch (_e) {}

    // ensure then list
    if (state.rootUri) {
      apiJson('POST', '/api/vault/ensure', state.rootUri, {})
        .then(function () {
          return loadList();
        })
        .catch(function (err) {
          setStatus(err.message || String(err), 'error');
          loadList();
        });
    } else {
      renderList();
      renderDetail();
      setStatus('请先打开本地文件夹', 'error');
    }
  }

  /** Keep left-rail /vault links in the current local_folder context. */
  function enrichVaultNavLinks() {
    var rootUri =
      (document.body && document.body.getAttribute('data-mnote-root-uri')) ||
      new URLSearchParams(window.location.search).get('rootUri') ||
      '';
    rootUri = String(rootUri || '').trim();
    var sourceKind =
      (document.body && document.body.getAttribute('data-mnote-source-kind')) ||
      new URLSearchParams(window.location.search).get('sourceKind') ||
      (rootUri ? 'local_folder' : '');
    sourceKind = String(sourceKind || '').trim();
    if (!rootUri && !sourceKind) return;
    qsa('a[data-mnote-nav="vault"], a[data-testid="mnote-nav-vault"], a[href="/vault"], a[href^="/vault?"]').forEach(
      function (link) {
        if (!(link instanceof HTMLAnchorElement)) return;
        try {
          var url = new URL(link.getAttribute('href') || '/vault', window.location.origin);
          if (url.pathname !== '/vault') return;
          if (rootUri && !url.searchParams.get('rootUri')) {
            url.searchParams.set('rootUri', rootUri);
          }
          if (sourceKind && !url.searchParams.get('sourceKind')) {
            url.searchParams.set('sourceKind', sourceKind);
          }
          link.setAttribute('href', url.pathname + url.search + url.hash);
        } catch (_e) {}
      }
    );
  }

  function boot() {
    enrichVaultNavLinks();
    qsa('[data-testid="mnote-vault-workbench"]').forEach(bindWorkbench);
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', boot, { once: true });
  } else {
    boot();
  }

  // Capture-phase enrich only. Soft-open is owned by sidebar-tree-runtime
  // (keeps PageTree/FileTree DOM). Full assign only when soft-open is unavailable.
  if (!window.__mnoteVaultNavCapture) {
    window.__mnoteVaultNavCapture = true;
    document.addEventListener(
      'click',
      function (ev) {
        var t = ev.target;
        if (!(t instanceof Element)) return;
        if (ev.button !== 0 || ev.metaKey || ev.ctrlKey || ev.shiftKey || ev.altKey) return;
        var link = t.closest(
          'a[data-mnote-nav="vault"], a[data-testid="mnote-nav-vault"], a[href="/vault"], a[href^="/vault?"]'
        );
        if (!(link instanceof HTMLAnchorElement)) return;
        try {
          var url = new URL(link.getAttribute('href') || '/vault', window.location.origin);
          if (url.pathname !== '/vault') return;
          var rootUri =
            (document.body && document.body.getAttribute('data-mnote-root-uri')) ||
            new URLSearchParams(window.location.search).get('rootUri') ||
            '';
          rootUri = String(rootUri || '').trim();
          if (rootUri && !url.searchParams.get('rootUri')) {
            url.searchParams.set('rootUri', rootUri);
            if (!url.searchParams.get('sourceKind')) {
              url.searchParams.set('sourceKind', 'local_folder');
            }
            link.setAttribute('href', url.pathname + url.search + url.hash);
          }
          // Prefer soft-open so sidebar tree expansion is preserved.
          if (typeof window.__mnoteOpenVaultWorkbench === 'function') {
            ev.preventDefault();
            void window.__mnoteOpenVaultWorkbench(url);
          }
        } catch (_e) {}
      },
      true
    );
  }

  window.mnote = window.mnote || {};
  window.mnote.vaultWorkbench = { boot: boot, enrichVaultNavLinks: enrichVaultNavLinks };
})();