diff --git a/scripts/grdm.py b/scripts/grdm.py
index 0497acd..619d9aa 100644
--- a/scripts/grdm.py
+++ b/scripts/grdm.py
@@ -6,6 +6,8 @@
 import re
 import time
 import traceback
+from urllib.parse import urljoin
+
 from playwright.async_api import expect
 
 
@@ -472,6 +474,41 @@ async def verify_property_folder_info(
 
     time.sleep(1)
     
+async def goto_wiki_by_name(page, wikiname, transition_timeout=60000):
+    """サイドバーの Wiki リンク href（相対 URL 可）から遷移する。"""
+    wiki_link = page.locator(f'//*[contains(@class, "title-text")]//a[text()="{wikiname}"]')
+    href = await wiki_link.first.get_attribute('href')
+    assert href, f'Wiki "{wikiname}" のリンクが見つかりません'
+    url = urljoin(page.url, href)
+    try:
+        await page.goto(url, timeout=transition_timeout, wait_until='domcontentloaded')
+    except Exception as e:
+        # 編集モード中の遷移などで goto が中断されても、目的の Wiki に着いていれば続行する
+        if 'ERR_ABORTED' not in str(e):
+            raise
+    await expect(page.locator('#pageName')).to_have_text(wikiname, timeout=transition_timeout)
+
+
+async def leave_edit_wiki_if_open(page, transition_timeout=60000):
+    """編集モードなら閲覧へ戻す。未保存確認が出た場合は破棄する。"""
+    modal = page.locator('#closeConfirmModal')
+    if not await page.locator('#mMenuBar').is_visible():
+        return
+    if await modal.is_visible():
+        await page.locator('#closeConfirmModal button.btn-danger').click()
+        await expect(modal).not_to_be_visible(timeout=transition_timeout)
+        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)
+        return
+    await page.locator('#revert-button').click()
+    try:
+        await expect(modal).to_be_visible(timeout=3000)
+        await page.locator('#closeConfirmModal button.btn-danger').click()
+        await expect(modal).not_to_be_visible(timeout=transition_timeout)
+    except AssertionError:
+        pass
+    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)
+
+
 async def open_wiki(page, wikiname, text, transition_timeout=60000):
     await page.locator(f'//*[contains(@class, "title-text")]//a[text()="{wikiname}"]').click()
     await expect(page.locator('//span[contains(@class, "title-text")]//b[contains(text(), "プロジェクトのWiki")]')).to_be_visible(timeout=transition_timeout)
@@ -484,6 +521,194 @@ async def open_edit_wiki(page, transition_timeout=60000):
     await expect(page.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)
     await expect(page.locator('#mEditor .ProseMirror[contenteditable="true"]')).to_be_visible(timeout=transition_timeout)
 
+
+async def open_edit_wiki_collab(page, transition_timeout=60000):
+    """2タブ共同編集向け。タブ前面化と Milkdown 共同編集テンプレート待ちを含む。"""
+    await page.bring_to_front()
+    await open_edit_wiki(page, transition_timeout=transition_timeout)
+    await page.wait_for_timeout(500)
+
+
+async def open_edit_wiki_after_close(page, transition_timeout=60000, settle_ms=2000, force_collab_rejoin=False):
+    """Close 後プレビューから「編集」を押す。
+
+    force_collab_rejoin=True のとき milkdown を外し connectCollab 再実行 path を通す。
+    """
+    if force_collab_rejoin:
+        await prepare_collab_rejoin_after_close(page)
+    await page.bring_to_front()
+    edit_button = page.locator('#editWysiwyg')
+    await expect(edit_button).to_be_visible(timeout=transition_timeout)
+    await wait_awareness_settle(page, ms=settle_ms)
+    await edit_button.scroll_into_view_if_needed()
+    await edit_button.click()
+    await expect(page.locator('#editWysiwyg')).not_to_be_visible(timeout=transition_timeout)
+    await expect(page.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)
+    await expect(page.locator('#mEditor .ProseMirror[contenteditable="true"]')).to_be_visible(
+        timeout=transition_timeout
+    )
+    if force_collab_rejoin:
+        await expect_live_editing(page, transition_timeout=transition_timeout)
+        await wait_awareness_settle(page, ms=3000)
+    else:
+        await wait_awareness_settle(page, ms=1500)
+
+
+async def expect_live_editing(page, transition_timeout=60000):
+    collab = page.locator('#collaborativeStatus')
+    await expect(collab).to_be_visible(timeout=transition_timeout)
+    await expect(collab).to_contain_text('Live editing mode', timeout=transition_timeout)
+
+
+async def _open_collaborative_edit_on_page(page, transition_timeout=60000):
+    consent = page.locator('//button[text() = "同意する"]')
+    if await consent.count():
+        await consent.click()
+    await open_edit_wiki_collab(page, transition_timeout=transition_timeout)
+
+
+async def get_wiki_user_fullname(page):
+    fullname = await page.evaluate(
+        "() => (window.contextVars.currentUser || {}).fullname || ''"
+    )
+    assert fullname, 'window.contextVars.currentUser.fullname が取得できません'
+    return fullname
+
+
+def remote_collaborator_name_locator(page, name):
+    return page.locator('#mEditor .ProseMirror-yjs-cursor div').filter(has_text=name)
+
+
+async def expect_remote_collaborator_name(page, name, visible=True, transition_timeout=60000):
+    locator = remote_collaborator_name_locator(page, name)
+    if visible:
+        await expect(locator.first).to_be_visible(timeout=transition_timeout)
+    else:
+        await expect(locator).to_have_count(0, timeout=transition_timeout)
+
+
+async def wait_awareness_settle(page, ms=500):
+    await page.wait_for_timeout(ms)
+
+
+async def nudge_collab_pages(sender, receiver, settle_ms=500):
+    """送信側→受信側の順にタブを前面化し、headless 2 タブ共同編集の Yjs 更新を促す。"""
+    await sender.bring_to_front()
+    await wait_awareness_settle(sender, ms=settle_ms)
+    await receiver.bring_to_front()
+    await wait_awareness_settle(receiver, ms=settle_ms)
+
+
+async def get_meditor_milkdown_count(page):
+    return await page.evaluate(
+        "() => document.getElementById('mEditor').querySelectorAll('div.milkdown').length"
+    )
+
+
+async def prepare_collab_rejoin_after_close(page):
+    """A Close 後の再 Edit で milkdown を外し、connectCollab 再実行 path を通す。"""
+    if await get_meditor_milkdown_count(page) == 0:
+        return
+    await page.evaluate(
+        "() => document.getElementById('mEditor').querySelectorAll('div.milkdown').forEach(function (div) { div.remove(); })"
+    )
+    await wait_awareness_settle(page, ms=500)
+
+
+async def flush_collab_yjs(sender, receiver, rounds=8, settle_ms=500):
+    """B 追記後、Close 中タブ A の Y.Doc へ更新が届くまで B→A を繰り返し前面化する。"""
+    for _ in range(rounds):
+        await nudge_collab_pages(sender, receiver, settle_ms=settle_ms)
+
+
+async def reopen_collab_edit_on_receiver(page, peer_page, transition_timeout=60000, settle_ms=2000):
+    """Close 中の page(A) を peer(B) の live Yjs へ再接続して再 Edit する。"""
+    await flush_collab_yjs(peer_page, page, rounds=4, settle_ms=500)
+    await open_edit_wiki_after_close(
+        page,
+        transition_timeout=transition_timeout,
+        settle_ms=settle_ms,
+        force_collab_rejoin=True,
+    )
+    await expect_live_editing(page, transition_timeout=transition_timeout)
+
+
+async def wait_for_collab_meditor_text(
+    page,
+    text,
+    peer_page=None,
+    transition_timeout=60000,
+    settle_ms=500,
+    stable_checks=1,
+    nudge_peer_ms=1000,
+):
+    """共同編集で page の #mEditor に text が載るまでポーリングする。
+
+    受信側 page を前面固定し、peer_page があれば定期的に短く前面化して Yjs 更新を促す。
+    """
+    import time
+
+    await page.bring_to_front()
+    if peer_page is not None:
+        await nudge_collab_pages(peer_page, page, settle_ms=settle_ms)
+    content = page.locator('#mEditor')
+    deadline = time.monotonic() + transition_timeout / 1000
+    last_error = None
+    consecutive = 0
+    last_nudge = time.monotonic()
+    while time.monotonic() < deadline:
+        if peer_page is not None and time.monotonic() - last_nudge >= nudge_peer_ms / 1000:
+            await nudge_collab_pages(peer_page, page, settle_ms=settle_ms)
+            last_nudge = time.monotonic()
+        else:
+            await wait_awareness_settle(page, ms=settle_ms)
+        try:
+            await expect(content).to_contain_text(text, timeout=1000)
+            consecutive += 1
+            if consecutive >= stable_checks:
+                return
+        except AssertionError as error:
+            last_error = error
+            consecutive = 0
+    assert last_error is not None
+    raise last_error
+
+
+async def open_collaborative_peer(page_a, transition_timeout=60000):
+    """同一ブラウザコンテキストで第2タブを開き、page_a と同じ Wiki の共同編集に参加する。"""
+    await expect_live_editing(page_a, transition_timeout=transition_timeout)
+    page_b = await page_a.context.new_page()
+    await page_b.goto(page_a.url, timeout=transition_timeout, wait_until='domcontentloaded')
+    await _open_collaborative_edit_on_page(page_b, transition_timeout=transition_timeout)
+    await expect_live_editing(page_b, transition_timeout=transition_timeout)
+    return page_b
+
+
+async def open_fresh_collaborative_peer(live_peer_page, transition_timeout=60000):
+    """編集中 peer と同じ Wiki を新タブで共同編集参加する（live Y.Doc に参加）。"""
+    await expect_live_editing(live_peer_page, transition_timeout=transition_timeout)
+    new_page = await live_peer_page.context.new_page()
+    await new_page.goto(live_peer_page.url, timeout=transition_timeout, wait_until='domcontentloaded')
+    await _open_collaborative_edit_on_page(new_page, transition_timeout=transition_timeout)
+    await expect_live_editing(new_page, transition_timeout=transition_timeout)
+    await wait_awareness_settle(new_page, ms=2000)
+    return new_page
+
+
+async def handoff_to_fresh_collab_peer(live_peer_page, required_text=None, transition_timeout=60000):
+    """A Close 後、live Y.Doc 参加用の新タブへ切り替え、旧 peer タブを閉じる。
+
+    同一 B タブ継続では Playwright 入力が Yjs に届かないことがあるため、
+    手動で別ウィンドウを開く操作に相当する。
+    """
+    new_page = await open_fresh_collaborative_peer(live_peer_page, transition_timeout=transition_timeout)
+    if required_text is not None:
+        await expect(new_page.locator('#mEditor')).to_contain_text(
+            required_text, timeout=transition_timeout
+        )
+    await live_peer_page.close()
+    return new_page
+
 async def select_text_range(page, text, transition_timeout=60000):
     editor_locator = page.locator('#mEditor .ProseMirror[contenteditable="true"]')
     await editor_locator.focus()
@@ -511,6 +736,48 @@ async def fill_text(page, text, transition_timeout=60000):
     await editor_locator.fill(text)
     await expect(editor_locator).to_have_text(text, timeout=transition_timeout)
 
+
+async def replace_wiki_text(page, text, transition_timeout=60000):
+    """全文置換（Close 確認テスト向け）。Milkdown 保存用 Markdown も更新する。"""
+    editor_locator = page.locator('#mEditor .ProseMirror[contenteditable="true"]')
+    await editor_locator.click()
+    await editor_locator.evaluate(
+        """
+        (el, text) => {
+            el.focus();
+            const range = document.createRange();
+            range.selectNodeContents(el);
+            const sel = window.getSelection();
+            sel.removeAllRanges();
+            sel.addRange(range);
+            document.execCommand('delete', false, null);
+            document.execCommand('insertText', false, text);
+        }
+        """,
+        text,
+    )
+    await expect(editor_locator).to_contain_text(text, timeout=transition_timeout)
+
+
+async def append_wiki_text(page, text, transition_timeout=60000, type_delay=50):
+    """末尾に追記する。keyboard.type で ProseMirror / 保存用 Markdown を更新する。"""
+    await page.bring_to_front()
+    editor_locator = page.locator('#mEditor .ProseMirror[contenteditable="true"]')
+    await editor_locator.click()
+    await page.keyboard.press("ControlOrMeta+End")
+    await page.keyboard.press("Enter")
+    await page.keyboard.type(text, delay=type_delay)
+    await expect(editor_locator).to_contain_text(text, timeout=transition_timeout)
+
+
+async def append_wiki_text_live(page, text, transition_timeout=60000):
+    """共同編集ライブ追記向け。keyboard.type で追記し Yjs 送信の余裕を取る。"""
+    await expect_live_editing(page, transition_timeout=transition_timeout)
+    await wait_awareness_settle(page, ms=500)
+    await append_wiki_text(page, text, transition_timeout=transition_timeout, type_delay=100)
+    await wait_awareness_settle(page, ms=3000)
+    await expect_live_editing(page, transition_timeout=transition_timeout)
+
 async def click_wiki_menu_save(page, menu_list, transition_timeout=60000):
     for menu in menu_list:
         locator_by_id = page.locator(f'#{menu}')
@@ -532,6 +799,14 @@ async def click_wiki_menu_save(page, menu_list, transition_timeout=60000):
     await page.locator('//input[@type="submit" and @value="保存"]').click()
     await expect(page.locator('//span[contains(@class, "title-text")]//b[contains(text(), "プロジェクトのWiki")]')).to_be_visible(timeout=transition_timeout)
 
+
+async def click_wiki_footer_save(page, transition_timeout=60000):
+    """編集フッターの「保存」で DB 保存し、閲覧モードへ遷移する。"""
+    async with page.expect_navigation(timeout=transition_timeout):
+        await page.locator('//input[@type="submit" and @value="保存"]').click()
+    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)
+
+
 async def set_text_color(color_input, r, g, b):
     r = max(0, min(255, r))
     g = max(0, min(255, g))
@@ -585,6 +860,53 @@ async def click_table_menu_save(page, row_index, col_index, table_menu, transiti
     view_locator = page.locator('#mView .ProseMirror[contenteditable="false"]')
     await expect(page.locator('//span[contains(@class, "title-text")]//b[contains(text(), "プロジェクトのWiki")]')).to_be_visible(timeout=transition_timeout)
 
+async def _dismiss_dialog_safe(dialog):
+    try:
+        await dialog.dismiss()
+    except Exception as e:
+        if 'already handled' not in str(e):
+            raise
+
+
+async def expect_no_dialog(page, action, transition_timeout=60000):
+    """action 実行中に dialog が出ないことを確認する。"""
+    messages = []
+
+    async def on_dialog(dialog):
+        messages.append(dialog.message)
+        await _dismiss_dialog_safe(dialog)
+
+    page.on('dialog', on_dialog)
+    try:
+        await action()
+    finally:
+        page.remove_listener('dialog', on_dialog)
+
+    assert not messages, f'離脱警告が表示された: {messages}'
+
+
+async def expect_beforeunload(page, action, transition_timeout=60000):
+    """action 実行で beforeunload が出ることを確認し dismiss する。"""
+    dialog_event = asyncio.Event()
+    captured = {}
+
+    async def on_dialog(dialog):
+        captured['dialog'] = dialog
+        await _dismiss_dialog_safe(dialog)
+        dialog_event.set()
+
+    page.on('dialog', on_dialog)
+    try:
+        await action()
+        await asyncio.wait_for(dialog_event.wait(), timeout=transition_timeout / 1000)
+    finally:
+        page.remove_listener('dialog', on_dialog)
+
+    dialog = captured.get('dialog')
+    assert dialog is not None, 'beforeunload が表示されませんでした'
+    assert dialog.type == 'beforeunload', f'想定外のダイアログ: type={dialog.type}'
+
+
 async def click_and_expect_alert(page, action, expected_message, transition_timeout=60000):
     async with page.expect_event("dialog", timeout=transition_timeout*5) as dialog_info:
         await action()
diff --git "a/\343\203\206\343\202\271\343\203\210\346\211\213\351\240\206-Wiki\346\223\215\344\275\234-WikiDecoration.ipynb" "b/\343\203\206\343\202\271\343\203\210\346\211\213\351\240\206-Wiki\346\223\215\344\275\234-WikiDecoration.ipynb"
index a5c24d8..354dfc4 100644
--- "a/\343\203\206\343\202\271\343\203\210\346\211\213\351\240\206-Wiki\346\223\215\344\275\234-WikiDecoration.ipynb"
+++ "b/\343\203\206\343\202\271\343\203\210\346\211\213\351\240\206-Wiki\346\223\215\344\275\234-WikiDecoration.ipynb"
@@ -6,12 +6,6 @@
    "id": "56e3e33b-cbb9-484f-be9a-769c04926fb9",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:31.770736Z",
-     "iopub.status.busy": "2026-01-06T08:32:31.769517Z",
-     "iopub.status.idle": "2026-01-06T08:32:31.778717Z",
-     "shell.execute_reply": "2026-01-06T08:32:31.777725Z"
-    },
     "lc_cell_meme": {
      "current": "f05363a8-0c25-11f0-98e9-5e0a5654d7bd-14-c2c3-a856-8c7b-03e6-653e-956c-acc8-ea3f-fa3a-173b",
      "history": [
@@ -78,12 +72,6 @@
    "id": "f2397f2c-07d5-4548-8855-0024b98a7e18",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:32.013339Z",
-     "iopub.status.busy": "2026-01-06T08:32:32.013097Z",
-     "iopub.status.idle": "2026-01-06T08:32:32.022548Z",
-     "shell.execute_reply": "2026-01-06T08:32:32.021854Z"
-    },
     "lc_cell_meme": {
      "current": "9a6a67cc-0c28-11f0-98e9-5e0a5654d7bd-12-fef2-2947-bb68-4605-cbe7-374c-f640-ff71-7091-011e",
      "execution_end_time": "2025-04-02T07:21:16.844Z",
@@ -289,12 +277,6 @@
    "id": "25e8c9ab-046c-4962-9ced-d4c9ada8f385",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:32.125796Z",
-     "iopub.status.busy": "2026-01-06T08:32:32.125579Z",
-     "iopub.status.idle": "2026-01-06T08:32:32.130933Z",
-     "shell.execute_reply": "2026-01-06T08:32:32.130260Z"
-    },
     "lc_cell_meme": {
      "current": "4f1d97fa-0c26-11f0-98e9-5e0a5654d7bd-13-aec7-edd7-31c7-2760-8094-dfda-5fa2-bc22-46de-24ee",
      "execution_end_time": "2025-04-02T07:21:20.767Z",
@@ -646,12 +628,6 @@
    "id": "3779559e-3d71-4295-81c9-6494aafaf795",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:32.333661Z",
-     "iopub.status.busy": "2026-01-06T08:32:32.333421Z",
-     "iopub.status.idle": "2026-01-06T08:32:33.192006Z",
-     "shell.execute_reply": "2026-01-06T08:32:33.191262Z"
-    },
     "lc_cell_meme": {
      "current": "9598145a-f29d-11ea-b359-0a58a9feac02-33-1540-66e7-e779-1196-efeb-205d-1efd-4009-783c-1463",
      "execution_end_time": "2024-03-26T10:16:58.586484Z",
@@ -889,8 +865,10 @@
     "import scripts.playwright\n",
     "importlib.reload(scripts.playwright)\n",
     "\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
     "from scripts.playwright import *\n",
-    "from scripts import grdm\n",
     "\n",
     "await init_pw_context(close_on_fail=close_on_fail, last_path=default_result_path)"
    ]
@@ -1022,12 +1000,6 @@
    "id": "b4a3cb3a-2257-44e7-bc6d-e864df2b433a",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:33.401523Z",
-     "iopub.status.busy": "2026-01-06T08:32:33.400348Z",
-     "iopub.status.idle": "2026-01-06T08:32:52.456769Z",
-     "shell.execute_reply": "2026-01-06T08:32:52.455672Z"
-    },
     "lc_cell_meme": {
      "current": "43b0be32-1c3a-11f0-a653-9281a4835edb-7-7d4e-9eb1-9bca-4f6c-c830-293a-bfdf",
      "execution_end_time": "2025-04-18T10:03:15.630Z",
@@ -1214,12 +1186,6 @@
    "id": "570378a2-83ee-4df9-a8f0-b747c37b61fa",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:52.685416Z",
-     "iopub.status.busy": "2026-01-06T08:32:52.684424Z",
-     "iopub.status.idle": "2026-01-06T08:32:56.611402Z",
-     "shell.execute_reply": "2026-01-06T08:32:56.610289Z"
-    },
     "lc_cell_meme": {
      "current": "8a9be6c2-0c46-11f0-98e9-5e0a5654d7bd-11-1d40-14d8-c05a-8f00-ece7-add9-2c16-ff1c-350f-0f54",
      "execution_end_time": "2025-04-02T07:25:56.619Z",
@@ -1415,12 +1381,6 @@
    "id": "a726b808-e2a5-4ce4-9943-08e9d5a75e9d",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:56.848984Z",
-     "iopub.status.busy": "2026-01-06T08:32:56.847999Z",
-     "iopub.status.idle": "2026-01-06T08:32:59.600373Z",
-     "shell.execute_reply": "2026-01-06T08:32:59.599344Z"
-    },
     "lc_cell_meme": {
      "current": "278c9b54-c9dc-11f0-9373-6a40bdb2b9ec-1-c03f",
      "execution_end_time": "2025-11-25T11:13:57.549Z",
@@ -1483,7 +1443,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "13a0b9c9-239e-404a-8be0-23a4ec3ffdee",
    "metadata": {
@@ -1532,12 +1491,6 @@
    "id": "9661461a-4b98-4733-aa19-659e3d7eccde",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:32:59.835550Z",
-     "iopub.status.busy": "2026-01-06T08:32:59.834396Z",
-     "iopub.status.idle": "2026-01-06T08:33:00.430542Z",
-     "shell.execute_reply": "2026-01-06T08:33:00.429480Z"
-    },
     "lc_cell_meme": {
      "current": "36bc17ee-c9dc-11f0-9373-6a40bdb2b9ec-1-5c64",
      "execution_end_time": "2025-11-25T11:13:58.073Z",
@@ -1605,7 +1558,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "a40874a2-11f0-4f23-8d1d-059be1d8ed67",
    "metadata": {
@@ -1654,12 +1606,6 @@
    "id": "c85b95b7-02a0-4a81-bc75-fbd83807d2da",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:00.667408Z",
-     "iopub.status.busy": "2026-01-06T08:33:00.666793Z",
-     "iopub.status.idle": "2026-01-06T08:33:02.960416Z",
-     "shell.execute_reply": "2026-01-06T08:33:02.959219Z"
-    },
     "lc_cell_meme": {
      "current": "b0835bb4-c9dc-11f0-9373-6a40bdb2b9ec-1-da98",
      "execution_end_time": "2025-11-25T11:14:00.618Z",
@@ -1724,7 +1670,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "258c516d-36ca-4067-ad00-6b939798e12d",
    "metadata": {
@@ -1773,12 +1718,6 @@
    "id": "4475582c-6877-479c-a629-da52d875f928",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:03.209040Z",
-     "iopub.status.busy": "2026-01-06T08:33:03.208490Z",
-     "iopub.status.idle": "2026-01-06T08:33:05.735024Z",
-     "shell.execute_reply": "2026-01-06T08:33:05.734007Z"
-    },
     "lc_cell_meme": {
      "current": "0bcdcfee-c9de-11f0-9373-6a40bdb2b9ec-1-872d",
      "execution_end_time": "2025-11-25T11:14:04.718Z",
@@ -1845,7 +1784,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "b54636e5-38da-49dd-a697-edbbaaec394b",
    "metadata": {
@@ -1889,12 +1827,6 @@
    "id": "ee9fab1e-203e-4b8b-8038-60f71a35c724",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:06.024165Z",
-     "iopub.status.busy": "2026-01-06T08:33:06.023056Z",
-     "iopub.status.idle": "2026-01-06T08:33:06.353068Z",
-     "shell.execute_reply": "2026-01-06T08:33:06.352016Z"
-    },
     "lc_cell_meme": {
      "current": "b78d2a82-c9de-11f0-9373-6a40bdb2b9ec-1-071e",
      "execution_end_time": "2025-11-25T11:14:04.874Z",
@@ -1955,13 +1887,12 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "\n",
     "await run_pw(_step)"
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "9599f9b2-9d52-4bf1-aa6e-74a76fa68ef9",
    "metadata": {
@@ -2020,12 +1951,6 @@
    "id": "3794fd6b-cf38-419c-bb4f-d1008e47db1c",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:06.600598Z",
-     "iopub.status.busy": "2026-01-06T08:33:06.599560Z",
-     "iopub.status.idle": "2026-01-06T08:33:07.773253Z",
-     "shell.execute_reply": "2026-01-06T08:33:07.772184Z"
-    },
     "lc_cell_meme": {
      "current": "5d42d7ba-c9df-11f0-9373-6a40bdb2b9ec-1-6844",
      "execution_end_time": "2025-11-25T11:14:06.253Z",
@@ -2102,7 +2027,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "7aa155ec-7092-433b-9809-27c53aaee94c",
    "metadata": {
@@ -2151,12 +2075,6 @@
    "id": "3e2bdfc2-c517-4b86-b627-70bc7c4d19a3",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:08.035013Z",
-     "iopub.status.busy": "2026-01-06T08:33:08.034073Z",
-     "iopub.status.idle": "2026-01-06T08:33:08.237032Z",
-     "shell.execute_reply": "2026-01-06T08:33:08.236019Z"
-    },
     "lc_cell_meme": {
      "current": "ee5e6714-c9df-11f0-9373-6a40bdb2b9ec-1-90ba",
      "execution_end_time": "2025-11-25T11:14:06.343Z",
@@ -2225,7 +2143,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "c458cfb9-ea85-4e00-97d3-78cab02a0e41",
    "metadata": {
@@ -2269,12 +2186,6 @@
    "id": "de3cd35a-023a-4370-af40-4efc1af5776a",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:08.502787Z",
-     "iopub.status.busy": "2026-01-06T08:33:08.501577Z",
-     "iopub.status.idle": "2026-01-06T08:33:11.536037Z",
-     "shell.execute_reply": "2026-01-06T08:33:11.534993Z"
-    },
     "lc_cell_meme": {
      "current": "155b778e-c9e1-11f0-9373-6a40bdb2b9ec-1-b024",
      "execution_end_time": "2025-11-25T11:14:09.992Z",
@@ -2366,7 +2277,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "14383fc3-b784-4764-898c-82f9af1ef5dc",
    "metadata": {
@@ -2435,12 +2345,6 @@
    "id": "a11291b2-7190-4591-b1fe-ca4d4d1c4fe5",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:11.803093Z",
-     "iopub.status.busy": "2026-01-06T08:33:11.801654Z",
-     "iopub.status.idle": "2026-01-06T08:33:15.925740Z",
-     "shell.execute_reply": "2026-01-06T08:33:15.924682Z"
-    },
     "lc_cell_meme": {
      "current": "999f136c-c9e5-11f0-9373-6a40bdb2b9ec-2-edad-cd82",
      "execution_end_time": "2025-12-16T04:44:28.181Z",
@@ -2511,7 +2415,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki'])\n",
     "\n",
@@ -2523,7 +2427,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "3ca5e516-3377-4339-a651-feb3feb3f2d9",
    "metadata": {
@@ -2607,12 +2510,6 @@
    "id": "32245346-f16f-40c5-8780-6516c77e1d94",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:16.213439Z",
-     "iopub.status.busy": "2026-01-06T08:33:16.212446Z",
-     "iopub.status.idle": "2026-01-06T08:33:19.413530Z",
-     "shell.execute_reply": "2026-01-06T08:33:19.412493Z"
-    },
     "lc_cell_meme": {
      "current": "07a957d2-c9f0-11f0-9373-6a40bdb2b9ec-1-423c",
      "history": [
@@ -2697,7 +2594,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['italicWiki'])\n",
     "\n",
@@ -2709,7 +2606,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "43311e22-2509-450c-903b-f5e43314bdcf",
    "metadata": {
@@ -2788,12 +2684,6 @@
    "id": "cb8b37e6-28fc-4559-9679-b949c82a1e83",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:19.726008Z",
-     "iopub.status.busy": "2026-01-06T08:33:19.724938Z",
-     "iopub.status.idle": "2026-01-06T08:33:22.960070Z",
-     "shell.execute_reply": "2026-01-06T08:33:22.959010Z"
-    },
     "lc_cell_meme": {
      "current": "070e3d7e-c9f0-11f0-9373-6a40bdb2b9ec-1-f5e5",
      "history": [
@@ -2883,7 +2773,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['italicWiki'])\n",
     "\n",
@@ -2895,7 +2785,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "6218cfe7-95f5-4ff7-ba69-02d20b233c22",
    "metadata": {
@@ -2974,12 +2863,6 @@
    "id": "c47fe73b-58eb-469b-8a01-8aa239b727f0",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:23.242024Z",
-     "iopub.status.busy": "2026-01-06T08:33:23.240843Z",
-     "iopub.status.idle": "2026-01-06T08:33:27.262466Z",
-     "shell.execute_reply": "2026-01-06T08:33:27.261381Z"
-    },
     "lc_cell_meme": {
      "current": "59c41746-c9f0-11f0-9373-6a40bdb2b9ec-1-2776",
      "history": [
@@ -3064,7 +2947,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_strikethrough'])\n",
     "\n",
@@ -3076,7 +2959,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "617dacbd-7ec6-4945-a8b2-5817482740c3",
    "metadata": {
@@ -3155,12 +3037,6 @@
    "id": "b84f742e-9cc1-4197-85dd-ebd4ed3e0242",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:27.545220Z",
-     "iopub.status.busy": "2026-01-06T08:33:27.544107Z",
-     "iopub.status.idle": "2026-01-06T08:33:31.387405Z",
-     "shell.execute_reply": "2026-01-06T08:33:31.386353Z"
-    },
     "lc_cell_meme": {
      "current": "5b3ff374-c9f0-11f0-9373-6a40bdb2b9ec-1-f17f",
      "history": [
@@ -3245,7 +3121,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_strikethrough'])\n",
     "\n",
@@ -3257,7 +3133,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "1b4e3d03-91ab-4567-a160-ac47a0c6b05c",
    "metadata": {
@@ -3336,12 +3211,6 @@
    "id": "3e827e71-3068-49f0-a538-d75994f9ea9f",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:31.673893Z",
-     "iopub.status.busy": "2026-01-06T08:33:31.672816Z",
-     "iopub.status.idle": "2026-01-06T08:33:35.905413Z",
-     "shell.execute_reply": "2026-01-06T08:33:35.904351Z"
-    },
     "lc_cell_meme": {
      "current": "540dc56c-ca6e-11f0-9373-6a40bdb2b9ec-1-fcd1",
      "execution_end_time": "2025-11-26T02:54:54.168Z",
@@ -3427,7 +3296,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_underlined'])\n",
     "\n",
@@ -3439,7 +3308,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "d211c2d8-e313-40b0-89c1-ef6d3f2b29fc",
    "metadata": {
@@ -3518,12 +3386,6 @@
    "id": "a7d152f6-6284-4934-b745-bf58e0d7c1f0",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:36.198119Z",
-     "iopub.status.busy": "2026-01-06T08:33:36.197174Z",
-     "iopub.status.idle": "2026-01-06T08:33:39.396016Z",
-     "shell.execute_reply": "2026-01-06T08:33:39.394993Z"
-    },
     "lc_cell_meme": {
      "current": "55287fbe-ca6e-11f0-9373-6a40bdb2b9ec-1-c7b0",
      "execution_end_time": "2025-11-26T02:54:57.599Z",
@@ -3629,7 +3491,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_underlined'])\n",
     "\n",
@@ -3641,7 +3503,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "b96cf2c2-693f-4eb4-a471-37d28bb6b3aa",
    "metadata": {
@@ -3687,12 +3548,6 @@
    "execution_count": null,
    "id": "68d38f1d-3031-42cd-bd55-acca9ecf3a95",
    "metadata": {
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:39.688963Z",
-     "iopub.status.busy": "2026-01-06T08:33:39.687941Z",
-     "iopub.status.idle": "2026-01-06T08:33:40.036052Z",
-     "shell.execute_reply": "2026-01-06T08:33:40.034989Z"
-    },
     "lc_cell_meme": {
      "current": "b564ef88-eacc-11f0-88dd-aaa1b857283c",
      "history": [
@@ -3722,14 +3577,13 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.select_text_range(page, text)\n",
     "\n",
     "await run_pw(_step)"
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "3df661db-bc80-44be-bb40-35843cb12c6d",
    "metadata": {
@@ -3828,12 +3682,6 @@
    "id": "d9c03633-ad69-4947-b790-816ed5da8ae0",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:40.330637Z",
-     "iopub.status.busy": "2026-01-06T08:33:40.330388Z",
-     "iopub.status.idle": "2026-01-06T08:33:43.371651Z",
-     "shell.execute_reply": "2026-01-06T08:33:43.370792Z"
-    },
     "lc_cell_meme": {
      "current": "55f47ce0-ca6e-11f0-9373-6a40bdb2b9ec-1-0191",
      "execution_end_time": "2025-11-26T02:55:01.182Z",
@@ -3944,7 +3792,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "2379c306-8781-43c7-b1ed-ef06f21e4d04",
    "metadata": {
@@ -4023,12 +3870,6 @@
    "id": "8e7132f5-62c0-4960-b5ac-d9ccddd79cc0",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:43.674798Z",
-     "iopub.status.busy": "2026-01-06T08:33:43.673454Z",
-     "iopub.status.idle": "2026-01-06T08:33:46.524304Z",
-     "shell.execute_reply": "2026-01-06T08:33:46.523293Z"
-    },
     "lc_cell_meme": {
      "current": "56b30a98-ca6e-11f0-9373-6a40bdb2b9ec-1-e903",
      "execution_end_time": "2025-11-26T02:55:04.549Z",
@@ -4269,12 +4110,6 @@
    "id": "c54bbd80-b64c-43b1-bbfa-92121f7787c2",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:46.829560Z",
-     "iopub.status.busy": "2026-01-06T08:33:46.828504Z",
-     "iopub.status.idle": "2026-01-06T08:33:47.015053Z",
-     "shell.execute_reply": "2026-01-06T08:33:47.014026Z"
-    },
     "lc_cell_meme": {
      "current": "79092cee-ca73-11f0-9373-6a40bdb2b9ec-1-30dc",
      "history": [
@@ -4351,7 +4186,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "871f54f5-e8b4-4bb3-9faa-a2164261a941",
    "metadata": {
@@ -4398,12 +4232,6 @@
    "execution_count": null,
    "id": "f331fb26-47c8-4163-8dcb-281ff52743f0",
    "metadata": {
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:47.319997Z",
-     "iopub.status.busy": "2026-01-06T08:33:47.318909Z",
-     "iopub.status.idle": "2026-01-06T08:33:47.459636Z",
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      "history": [
@@ -4440,7 +4268,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "f82fa05b-7cf6-4e11-858a-5a9f23bd199b",
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@@ -4514,12 +4341,6 @@
    "id": "27a69196-58e6-4f75-9429-3884bc1598ab",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:47.773924Z",
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-     "iopub.status.idle": "2026-01-06T08:33:54.872607Z",
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      "history": [
@@ -4600,7 +4421,6 @@
    ]
   },
   {
-   "attachments": {},
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    "id": "244ae618-bee8-42db-8b27-bd7622aa6a12",
    "metadata": {
@@ -4649,12 +4469,6 @@
    "id": "e0c070a6-ceb9-4ce3-a415-7c98fadcd578",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:33:55.230497Z",
-     "iopub.status.busy": "2026-01-06T08:33:55.228987Z",
-     "iopub.status.idle": "2026-01-06T08:33:57.499861Z",
-     "shell.execute_reply": "2026-01-06T08:33:57.498801Z"
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      "history": [
@@ -4716,7 +4530,6 @@
    ]
   },
   {
-   "attachments": {},
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    "id": "de1912a1-cd5b-4175-9150-274ea1233d10",
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@@ -4765,12 +4578,6 @@
    "id": "e8233f31-a856-4aaf-91ba-b05dbf9b887b",
    "metadata": {
     "deletable": true,
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      "history": [
@@ -4827,7 +4634,6 @@
    ]
   },
   {
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    "id": "28f9e887-f7a3-4088-a3bc-611d8290f5fa",
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@@ -4887,12 +4693,6 @@
    "id": "34160e6c-a4a2-4ac1-ac00-ffb36a364f77",
    "metadata": {
     "deletable": true,
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      "history": [
@@ -4930,7 +4730,6 @@
    ]
   },
   {
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    "id": "022b2f7f-f19c-4a9d-b849-344a0c912ed7",
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@@ -5009,12 +4808,6 @@
    "id": "666cdfe9-53c3-4fda-b1cf-d1985db9ea24",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:12.845463Z",
-     "iopub.status.busy": "2026-01-06T08:34:12.845186Z",
-     "iopub.status.idle": "2026-01-06T08:34:12.988597Z",
-     "shell.execute_reply": "2026-01-06T08:34:12.987600Z"
-    },
     "lc_cell_meme": {
      "current": "22beb1a4-dfab-11f0-99a8-12ab7e3bb6be-1-352b",
      "execution_end_time": "2025-12-23T04:47:32.385Z",
@@ -5051,7 +4844,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "3d71556d-6b4c-4671-ab3f-0ef46a472715",
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@@ -5145,12 +4937,6 @@
    "id": "e17a9b2b-989d-4091-981b-ab6a31ae79d2",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:13.326833Z",
-     "iopub.status.busy": "2026-01-06T08:34:13.326283Z",
-     "iopub.status.idle": "2026-01-06T08:34:15.629771Z",
-     "shell.execute_reply": "2026-01-06T08:34:15.629077Z"
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      "history": [
@@ -5231,7 +5017,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "674a1f67-f24e-4900-aa21-b1ac5609cd68",
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@@ -5280,12 +5065,6 @@
    "id": "4e2f6371-f560-43e9-a2d8-4445cfd14cf5",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:15.987122Z",
-     "iopub.status.busy": "2026-01-06T08:34:15.986148Z",
-     "iopub.status.idle": "2026-01-06T08:34:19.334710Z",
-     "shell.execute_reply": "2026-01-06T08:34:19.333687Z"
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      "current": "776d537e-ca73-11f0-9373-6a40bdb2b9ec-1-c059",
      "history": [
@@ -5340,7 +5119,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.click_wiki_menu_save(page, ['sort'])\n",
     "\n",
     "    view_locator = page.locator('#mView .ProseMirror[contenteditable=\"false\"]')\n",
@@ -5358,7 +5137,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "d6483e5c-7bb2-4c96-94f2-82cffab6dba2",
    "metadata": {
@@ -5407,12 +5185,6 @@
    "id": "f9f22935-d9fb-4725-803c-cd731c8558de",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:19.736126Z",
-     "iopub.status.busy": "2026-01-06T08:34:19.735026Z",
-     "iopub.status.idle": "2026-01-06T08:34:22.477669Z",
-     "shell.execute_reply": "2026-01-06T08:34:22.476388Z"
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      "current": "7726e556-ca73-11f0-9373-6a40bdb2b9ec-1-b449",
      "history": [
@@ -5469,7 +5241,7 @@
     "text = 'test クリック'\n",
     "async def _step(page):\n",
     "    await grdm.open_wiki(page, new_wikiname, 'test')\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    \n",
@@ -5480,7 +5252,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "c45f62df-e2a3-4b68-a6a7-393077f2d852",
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@@ -5524,12 +5295,6 @@
    "id": "69d79f57-f387-4ef7-8330-9ba13a3814e5",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:22.832548Z",
-     "iopub.status.busy": "2026-01-06T08:34:22.831449Z",
-     "iopub.status.idle": "2026-01-06T08:34:23.507188Z",
-     "shell.execute_reply": "2026-01-06T08:34:23.506161Z"
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      "history": [
@@ -5590,7 +5355,6 @@
    ]
   },
   {
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    "id": "9373813d-b7b7-4d8d-9f9e-2889a53d73ea",
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@@ -5649,12 +5413,6 @@
    "id": "c29b6ebe-1e48-4c10-bf74-227ccdf19d81",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:23.864056Z",
-     "iopub.status.busy": "2026-01-06T08:34:23.863442Z",
-     "iopub.status.idle": "2026-01-06T08:34:27.152986Z",
-     "shell.execute_reply": "2026-01-06T08:34:27.151721Z"
-    },
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      "history": [
@@ -5721,7 +5479,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "cfb2f88e-9edb-4264-8163-df362b7c19e7",
    "metadata": {
@@ -5770,12 +5527,6 @@
    "id": "5cf4829e-9663-4ea5-8bb6-d5c7e66c2b9d",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:27.521137Z",
-     "iopub.status.busy": "2026-01-06T08:34:27.520098Z",
-     "iopub.status.idle": "2026-01-06T08:34:29.332811Z",
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      "history": [
@@ -5841,7 +5592,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "ff38f246-44b0-4c53-8bab-518369f25351",
    "metadata": {
@@ -5895,12 +5645,6 @@
    "id": "41f1d888-af36-459a-ae6a-8bbf8f7688b4",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:29.704197Z",
-     "iopub.status.busy": "2026-01-06T08:34:29.703950Z",
-     "iopub.status.idle": "2026-01-06T08:34:35.945768Z",
-     "shell.execute_reply": "2026-01-06T08:34:35.944698Z"
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      "history": [
@@ -5952,7 +5696,7 @@
     "text = 'test 引用'\n",
     "async def _step(page):\n",
     "    await grdm.open_wiki(page, new_wikiname, 'test')\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_quote'])\n",
@@ -5965,7 +5709,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "29b65602-8abf-4478-9cf4-339a03e473ae",
    "metadata": {
@@ -6009,12 +5752,6 @@
    "id": "97f60680-a26f-4a02-9993-a2b9865d3b7d",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:36.312728Z",
-     "iopub.status.busy": "2026-01-06T08:34:36.311646Z",
-     "iopub.status.idle": "2026-01-06T08:34:41.813398Z",
-     "shell.execute_reply": "2026-01-06T08:34:41.812073Z"
-    },
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      "current": "23c61f5e-cab8-11f0-9373-6a40bdb2b9ec-1-47e7",
      "history": [
@@ -6076,7 +5813,7 @@
     "text = 'test コードブロック'\n",
     "async def _step(page):\n",
     "    await grdm.open_wiki(page, new_wikiname, 'test')\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('blockquote').count()\n",
     "    if count > 0:\n",
     "        await page.locator('blockquote').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -6092,7 +5829,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "20d8f4bb-9752-4841-bf0f-068ede461e55",
    "metadata": {
@@ -6141,12 +5877,6 @@
    "id": "762f2bd3-fa85-49f3-a33f-81dd96295f22",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:42.182876Z",
-     "iopub.status.busy": "2026-01-06T08:34:42.181522Z",
-     "iopub.status.idle": "2026-01-06T08:34:43.275401Z",
-     "shell.execute_reply": "2026-01-06T08:34:43.274283Z"
-    },
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      "current": "c99752a6-cb3d-11f0-9373-6a40bdb2b9ec-1-9f47",
      "history": [
@@ -6201,7 +5931,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    editor_locator = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
     "    await editor_locator.click()\n",
     "    count = await page.locator('pre:has(code)').count()\n",
@@ -6214,7 +5944,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "782503d9-d029-4732-a7ea-986f815c77ff",
    "metadata": {
@@ -6267,12 +5996,6 @@
    "id": "94652d68-4038-4e50-9762-3a560414ca70",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:43.684579Z",
-     "iopub.status.busy": "2026-01-06T08:34:43.683540Z",
-     "iopub.status.idle": "2026-01-06T08:34:44.351220Z",
-     "shell.execute_reply": "2026-01-06T08:34:44.349681Z"
-    },
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      "current": "cad00e88-cb3d-11f0-9373-6a40bdb2b9ec-1-5551",
      "history": [
@@ -6340,7 +6063,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "9bea9719-c76a-4ec2-9c90-2183f0105e85",
    "metadata": {
@@ -6389,12 +6111,6 @@
    "id": "2206981b-1ac7-4d41-8832-7fbdd8ba5324",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:44.721760Z",
-     "iopub.status.busy": "2026-01-06T08:34:44.720407Z",
-     "iopub.status.idle": "2026-01-06T08:34:47.952663Z",
-     "shell.execute_reply": "2026-01-06T08:34:47.951902Z"
-    },
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      "history": [
@@ -6461,7 +6177,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "8fa1a879-4513-479e-8fd2-0808ed9e28e9",
    "metadata": {
@@ -6510,12 +6225,6 @@
    "id": "1f39472c-0528-4d8a-b560-711a0eace27a",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:48.340804Z",
-     "iopub.status.busy": "2026-01-06T08:34:48.339468Z",
-     "iopub.status.idle": "2026-01-06T08:34:49.145648Z",
-     "shell.execute_reply": "2026-01-06T08:34:49.144797Z"
-    },
     "lc_cell_meme": {
      "current": "cc06e696-cb3d-11f0-9373-6a40bdb2b9ec-1-b911",
      "history": [
@@ -6570,7 +6279,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('img[alt=\"非表示時文言\"]').count()\n",
     "    if count > 0:\n",
     "        await page.locator('img[alt=\"非表示時文言\"]').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -6581,7 +6290,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "e14731a8-d8ae-45d3-b956-7b03258190f4",
    "metadata": {
@@ -6633,12 +6341,6 @@
    "id": "418f536e-c756-413c-9ff8-dee21c199192",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:49.534572Z",
-     "iopub.status.busy": "2026-01-06T08:34:49.534014Z",
-     "iopub.status.idle": "2026-01-06T08:34:50.237647Z",
-     "shell.execute_reply": "2026-01-06T08:34:50.236763Z"
-    },
     "lc_cell_meme": {
      "current": "ccfc9384-cb3d-11f0-9373-6a40bdb2b9ec-1-76ce",
      "history": [
@@ -6706,7 +6408,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "6b39aa88-5272-4232-acbb-05858f818cea",
    "metadata": {
@@ -6755,12 +6456,6 @@
    "id": "0c07fe42-f706-4156-9639-a3ee1f139cb9",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:50.636126Z",
-     "iopub.status.busy": "2026-01-06T08:34:50.634924Z",
-     "iopub.status.idle": "2026-01-06T08:34:53.659041Z",
-     "shell.execute_reply": "2026-01-06T08:34:53.657908Z"
-    },
     "lc_cell_meme": {
      "current": "ce1a6afc-cb3d-11f0-9373-6a40bdb2b9ec-1-5cc4",
      "history": [
@@ -6828,7 +6523,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "9d87e4ba-8454-4cc5-8464-4da62ebe958b",
    "metadata": {
@@ -6880,12 +6574,6 @@
    "id": "3b6c2d88-1f9f-4958-873f-8da0547b2427",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:54.054781Z",
-     "iopub.status.busy": "2026-01-06T08:34:54.053698Z",
-     "iopub.status.idle": "2026-01-06T08:34:57.556496Z",
-     "shell.execute_reply": "2026-01-06T08:34:57.555424Z"
-    },
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      "current": "cf4b5896-cb3d-11f0-9373-6a40bdb2b9ec-1-d176",
      "history": [
@@ -6942,7 +6630,7 @@
     "text = '番号付きリスト'\n",
     "\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('img[alt=\"非表示時文言\"]').count()\n",
     "    if count > 0:\n",
     "        await page.locator('img[alt=\"非表示時文言\"]').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -6958,7 +6646,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "e523a255-3a3b-4475-bfcf-421ac48dcb55",
    "metadata": {
@@ -7007,12 +6694,6 @@
    "id": "40dcc880-8ea7-4c9d-b326-8509a9cc8994",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:34:57.962740Z",
-     "iopub.status.busy": "2026-01-06T08:34:57.961682Z",
-     "iopub.status.idle": "2026-01-06T08:35:01.512255Z",
-     "shell.execute_reply": "2026-01-06T08:35:01.511216Z"
-    },
     "lc_cell_meme": {
      "current": "cfe99b50-cb3d-11f0-9373-6a40bdb2b9ec-1-03cd",
      "history": [
@@ -7069,7 +6750,7 @@
     "text = '箇条書きリスト'\n",
     "\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('ol li p').count()\n",
     "    if count > 0:\n",
     "        await page.locator('ol li p').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -7085,7 +6766,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "ccbf5fff-b701-47f9-b9a4-0237784cd7db",
    "metadata": {
@@ -7134,12 +6814,6 @@
    "id": "718e92d3-fcfb-4a31-acc7-f6d60cc8c3c3",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:01.973952Z",
-     "iopub.status.busy": "2026-01-06T08:35:01.972688Z",
-     "iopub.status.idle": "2026-01-06T08:35:07.159695Z",
-     "shell.execute_reply": "2026-01-06T08:35:07.158728Z"
-    },
     "lc_cell_meme": {
      "current": "b11f7bb4-cb73-11f0-93ae-6a40bdb2b9ec-1-69e1",
      "history": [
@@ -7196,7 +6870,7 @@
     "text = 'test 見出し'\n",
     "\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('ul li p').count()\n",
     "    if count > 0:\n",
     "        await page.locator('ul li p').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -7212,7 +6886,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "b2cdb4ae-7ab7-4abf-9036-6aaad1f24780",
    "metadata": {
@@ -7261,12 +6934,6 @@
    "id": "0fb6f9a9-c2d0-455d-91b5-c679a0a2cbc5",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:07.594388Z",
-     "iopub.status.busy": "2026-01-06T08:35:07.593346Z",
-     "iopub.status.idle": "2026-01-06T08:35:11.245642Z",
-     "shell.execute_reply": "2026-01-06T08:35:11.244293Z"
-    },
     "lc_cell_meme": {
      "current": "29f2855e-cb74-11f0-93ae-6a40bdb2b9ec-1-315d",
      "history": [
@@ -7321,7 +6988,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['horizontal_rule'])\n",
@@ -7334,7 +7001,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "ed777362-b3d8-4b6b-97b3-05a6a26b7b3d",
    "metadata": {
@@ -7383,12 +7049,6 @@
    "id": "d7212592-810f-4f4c-a3cd-673fe88a48f3",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:11.679293Z",
-     "iopub.status.busy": "2026-01-06T08:35:11.678126Z",
-     "iopub.status.idle": "2026-01-06T08:35:16.564783Z",
-     "shell.execute_reply": "2026-01-06T08:35:16.563676Z"
-    },
     "lc_cell_meme": {
      "current": "d736f100-cb74-11f0-93ae-6a40bdb2b9ec-1-229a",
      "history": [
@@ -7443,7 +7103,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    count = await page.locator('hr').count()\n",
     "    if count > 0:\n",
     "        await page.locator('hr').evaluate_all(\"elements => elements.forEach(el => el.remove())\")\n",
@@ -7457,7 +7117,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "86604bcb-b952-4fd6-a980-31cef35bc169",
    "metadata": {
@@ -7511,12 +7170,6 @@
    "id": "a79504ca-ec7c-4e34-90a7-d75aa1b280ad",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:17.000013Z",
-     "iopub.status.busy": "2026-01-06T08:35:16.998908Z",
-     "iopub.status.idle": "2026-01-06T08:35:20.748531Z",
-     "shell.execute_reply": "2026-01-06T08:35:20.747266Z"
-    },
     "lc_cell_meme": {
      "current": "4fdaf966-cb76-11f0-93ae-6a40bdb2b9ec-2-eb00-ce60",
      "history": [
@@ -7586,7 +7239,7 @@
     "    before_col_number = await col_locator.count()\n",
     "    print(before_col_number)\n",
     "\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 1\n",
     "    col_index = 0\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"前に列を挿入\")\n",
@@ -7600,7 +7253,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "b2bc2872-a4a7-4505-a8fd-eef5c4f53e82",
    "metadata": {
@@ -7654,12 +7306,6 @@
    "id": "a89728dd-9773-48e0-8b04-76d77b7a5a75",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:21.181487Z",
-     "iopub.status.busy": "2026-01-06T08:35:21.180274Z",
-     "iopub.status.idle": "2026-01-06T08:35:25.124523Z",
-     "shell.execute_reply": "2026-01-06T08:35:25.123105Z"
-    },
     "lc_cell_meme": {
      "current": "520358d0-cbff-11f0-93ae-6a40bdb2b9ec-2-8629-4bea",
      "execution_end_time": "2025-12-10T07:58:19.835Z",
@@ -7730,7 +7376,7 @@
     "    before_col_number = await col_locator.count()\n",
     "    print(before_col_number)\n",
     "\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 1\n",
     "    col_index = 1\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"後に列を挿入\")\n",
@@ -7744,7 +7390,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "942e7ade-2181-4c0e-b0ef-28f08ff2656a",
    "metadata": {
@@ -7793,12 +7438,6 @@
    "id": "f641f9d9-0a79-4430-9c83-b889759b8897",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:25.584730Z",
-     "iopub.status.busy": "2026-01-06T08:35:25.583753Z",
-     "iopub.status.idle": "2026-01-06T08:35:29.012899Z",
-     "shell.execute_reply": "2026-01-06T08:35:29.011803Z"
-    },
     "lc_cell_meme": {
      "current": "0aab459c-d96a-11f0-806b-12ab7e3bb6be-1-8c87",
      "execution_end_time": "2025-12-15T04:56:00.761Z",
@@ -7859,7 +7498,7 @@
     "    before_row_number = await row_locator.count()\n",
     "    print(before_row_number)\n",
     "\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 1\n",
     "    col_index = 1\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"前に行を挿入\")\n",
@@ -7873,7 +7512,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "dadd8e11-5d86-4150-b0a0-2a91495f2089",
    "metadata": {
@@ -7922,12 +7560,6 @@
    "id": "bd27d9f2-c3c9-46af-af99-7fbc3033d077",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:29.465105Z",
-     "iopub.status.busy": "2026-01-06T08:35:29.464048Z",
-     "iopub.status.idle": "2026-01-06T08:35:32.939768Z",
-     "shell.execute_reply": "2026-01-06T08:35:32.938190Z"
-    },
     "lc_cell_meme": {
      "current": "097447dc-d96a-11f0-806b-12ab7e3bb6be-1-6813",
      "execution_end_time": "2025-12-15T04:54:11.708Z",
@@ -8023,7 +7655,7 @@
     "    before_row_number = await row_locator.count()\n",
     "    print(before_row_number)\n",
     "\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 2\n",
     "    col_index = 3\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"後に行を挿入\")\n",
@@ -8037,7 +7669,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "ce041b5d-e154-471e-81b2-5a8cc65c8959",
    "metadata": {
@@ -8081,12 +7712,6 @@
    "id": "68cb0481-4b81-4251-8041-b4c5fe515a1f",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:33.394418Z",
-     "iopub.status.busy": "2026-01-06T08:35:33.393963Z",
-     "iopub.status.idle": "2026-01-06T08:35:37.227870Z",
-     "shell.execute_reply": "2026-01-06T08:35:37.226582Z"
-    },
     "lc_cell_meme": {
      "current": "5d0d14da-da25-11f0-806b-12ab7e3bb6be-1-8caf",
      "history": [
@@ -8146,7 +7771,7 @@
     "    before_row_number = await row_locator.count()\n",
     "    print(before_row_number)\n",
     "\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 1\n",
     "    col_index = 4\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"セルを削除\")\n",
@@ -8160,7 +7785,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "8c11468b-ca74-4deb-b4bb-ec20ae989546",
    "metadata": {
@@ -8209,12 +7833,6 @@
    "id": "d8dcc897-025e-471c-b9ad-88be97678c1a",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:37.721098Z",
-     "iopub.status.busy": "2026-01-06T08:35:37.719745Z",
-     "iopub.status.idle": "2026-01-06T08:35:38.296611Z",
-     "shell.execute_reply": "2026-01-06T08:35:38.295493Z"
-    },
     "lc_cell_meme": {
      "current": "5c96889c-da25-11f0-806b-12ab7e3bb6be-1-0bcd",
      "execution_end_time": "2025-12-16T04:46:21.167Z",
@@ -8270,7 +7888,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    row_index = 0\n",
     "    col_index = 1\n",
     "    await grdm.click_table_menu_save(page, row_index, col_index, \"テーブルを削除\")\n",
@@ -8280,7 +7898,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "39e8132c-e270-40a5-94da-b237872784cd",
    "metadata": {
@@ -8329,12 +7946,6 @@
    "id": "6dda328b-c2ce-43e7-a64e-539e2ef7087e",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:38.760552Z",
-     "iopub.status.busy": "2026-01-06T08:35:38.759770Z",
-     "iopub.status.idle": "2026-01-06T08:35:41.611142Z",
-     "shell.execute_reply": "2026-01-06T08:35:41.610091Z"
-    },
     "lc_cell_meme": {
      "current": "5c227808-da25-11f0-806b-12ab7e3bb6be-1-c060",
      "execution_end_time": "2025-12-16T04:46:24.970Z",
@@ -8390,7 +8001,7 @@
    "outputs": [],
    "source": [
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await page.locator(f'#mMenuBar span:has-text(\"help\")').click()\n",
     "    await expect(page.locator('//h3[contains(@class, \"modal-title\") and text()=\"Wiki構文のヘルプ\"]')).to_be_visible(timeout=transition_timeout*2)\n",
     "\n",
@@ -8399,7 +8010,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "c11b9cdd-bbe8-4bd1-bc1f-4d361d4c926b",
    "metadata": {
@@ -8448,12 +8058,6 @@
    "id": "55dd03ac-d3a1-48d6-82a8-d330b324f08b",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:42.085122Z",
-     "iopub.status.busy": "2026-01-06T08:35:42.084873Z",
-     "iopub.status.idle": "2026-01-06T08:35:46.866192Z",
-     "shell.execute_reply": "2026-01-06T08:35:46.865161Z"
-    },
     "lc_cell_meme": {
      "current": "5bdaad48-da25-11f0-806b-12ab7e3bb6be-1-8231",
      "history": [
@@ -8617,7 +8221,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "495d4ea0-b9ee-4693-810b-059a4e4f1b21",
    "metadata": {
@@ -8661,12 +8264,6 @@
    "id": "cf8d6625-e940-4e5a-8d0d-2e436e71bc28",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:47.341330Z",
-     "iopub.status.busy": "2026-01-06T08:35:47.340285Z",
-     "iopub.status.idle": "2026-01-06T08:35:51.277149Z",
-     "shell.execute_reply": "2026-01-06T08:35:51.276041Z"
-    },
     "lc_cell_meme": {
      "current": "150e508e-da2c-11f0-806b-12ab7e3bb6be-1-a872",
      "execution_end_time": "2025-12-16T04:46:33.637Z",
@@ -8718,7 +8315,7 @@
    "source": [
     "text = 'test 太文字、取消線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_strikethrough'])\n",
@@ -8731,7 +8328,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "4231623f-80fb-4dd1-afc6-99df23275a8c",
    "metadata": {
@@ -8775,12 +8371,6 @@
    "id": "0cfe93f8-9c7e-4418-ae7e-672589bcf47b",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:51.758700Z",
-     "iopub.status.busy": "2026-01-06T08:35:51.757491Z",
-     "iopub.status.idle": "2026-01-06T08:35:56.478953Z",
-     "shell.execute_reply": "2026-01-06T08:35:56.477897Z"
-    },
     "lc_cell_meme": {
      "current": "14c12fc0-da2c-11f0-806b-12ab7e3bb6be-1-ea62",
      "execution_end_time": "2025-12-16T04:46:38.515Z",
@@ -8847,7 +8437,7 @@
    "source": [
     "text = 'test 太文字、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_underlined'])\n",
@@ -8860,7 +8450,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "9263b36e-78a2-4484-8154-a183e362f025",
    "metadata": {
@@ -8909,12 +8498,6 @@
    "id": "52e2d2ae-863a-47cf-942b-b1ad88b757dd",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:35:56.964811Z",
-     "iopub.status.busy": "2026-01-06T08:35:56.963729Z",
-     "iopub.status.idle": "2026-01-06T08:36:01.100961Z",
-     "shell.execute_reply": "2026-01-06T08:36:01.099885Z"
-    },
     "lc_cell_meme": {
      "current": "1420c6fc-da2c-11f0-806b-12ab7e3bb6be-1-da78",
      "execution_end_time": "2025-12-16T04:46:43.086Z",
@@ -8971,7 +8554,7 @@
    "source": [
     "text = 'test 太文字、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_color_text'])\n",
@@ -8984,7 +8567,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "53bfbe43-d630-4732-afd8-7051d532e60a",
    "metadata": {
@@ -9033,12 +8615,6 @@
    "id": "f0f82173-fd0e-4f22-a464-0d5ac5408880",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:01.616805Z",
-     "iopub.status.busy": "2026-01-06T08:36:01.615731Z",
-     "iopub.status.idle": "2026-01-06T08:36:06.917911Z",
-     "shell.execute_reply": "2026-01-06T08:36:06.916893Z"
-    },
     "lc_cell_meme": {
      "current": "138771dc-da2c-11f0-806b-12ab7e3bb6be-1-3114",
      "execution_end_time": "2025-12-16T04:46:47.581Z",
@@ -9095,7 +8671,7 @@
    "source": [
     "text = 'test 斜体、取消線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['italicWiki', 'format_strikethrough'])\n",
@@ -9108,7 +8684,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "ef9d9903-e3b1-4b03-ad47-7ba8b967d98f",
    "metadata": {
@@ -9157,12 +8732,6 @@
    "id": "4237d195-bd92-4386-86f8-3e245fc407e6",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:07.410564Z",
-     "iopub.status.busy": "2026-01-06T08:36:07.409657Z",
-     "iopub.status.idle": "2026-01-06T08:36:11.362030Z",
-     "shell.execute_reply": "2026-01-06T08:36:11.360763Z"
-    },
     "lc_cell_meme": {
      "current": "1300ee64-da2c-11f0-806b-12ab7e3bb6be-1-1a20",
      "execution_end_time": "2025-12-16T04:46:51.982Z",
@@ -9219,7 +8788,7 @@
    "source": [
     "text = 'test 斜体、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['italicWiki', 'format_underlined'])\n",
@@ -9232,7 +8801,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "65c5b35a-e6b5-4652-bb75-12f23201e80a",
    "metadata": {
@@ -9281,12 +8849,6 @@
    "id": "0fdbb533-55f9-44cf-b88e-64e2729eb35f",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:11.863826Z",
-     "iopub.status.busy": "2026-01-06T08:36:11.862795Z",
-     "iopub.status.idle": "2026-01-06T08:36:16.608535Z",
-     "shell.execute_reply": "2026-01-06T08:36:16.607498Z"
-    },
     "lc_cell_meme": {
      "current": "1244cffe-da2c-11f0-806b-12ab7e3bb6be-1-7aaf",
      "execution_end_time": "2025-12-16T04:46:56.706Z",
@@ -9343,7 +8905,7 @@
    "source": [
     "text = 'test 斜体、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['italicWiki', 'format_color_text'])\n",
@@ -9356,7 +8918,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "90847be1-7a31-4ab3-9426-cd7b91b01909",
    "metadata": {
@@ -9405,12 +8966,6 @@
    "id": "d61f56ff-fc29-4253-9934-6b2a064834f7",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:17.118061Z",
-     "iopub.status.busy": "2026-01-06T08:36:17.117146Z",
-     "iopub.status.idle": "2026-01-06T08:36:21.090996Z",
-     "shell.execute_reply": "2026-01-06T08:36:21.089917Z"
-    },
     "lc_cell_meme": {
      "current": "11bab788-da2c-11f0-806b-12ab7e3bb6be-1-0efc",
      "execution_end_time": "2025-12-16T04:47:01.231Z",
@@ -9462,7 +9017,7 @@
    "source": [
     "text = 'test 取消、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_strikethrough', 'format_underlined'])\n",
@@ -9475,7 +9030,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "bfb8615b-6f6d-44b8-a281-dc178fa2a9f0",
    "metadata": {
@@ -9519,12 +9073,6 @@
    "id": "92afd576-2f98-475d-8928-d99b4b5a95b6",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:21.588155Z",
-     "iopub.status.busy": "2026-01-06T08:36:21.587273Z",
-     "iopub.status.idle": "2026-01-06T08:36:26.280061Z",
-     "shell.execute_reply": "2026-01-06T08:36:26.278962Z"
-    },
     "lc_cell_meme": {
      "current": "11281cd4-da2c-11f0-806b-12ab7e3bb6be-1-aee2",
      "execution_end_time": "2025-12-16T04:47:05.981Z",
@@ -9611,7 +9159,7 @@
    "source": [
     "text = 'test 取消、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_strikethrough', 'format_color_text'])\n",
@@ -9624,7 +9172,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "d3d058a5-c222-4b84-8fd6-032254afcb01",
    "metadata": {
@@ -9668,12 +9215,6 @@
    "id": "cc200d11-93ec-405b-ad45-bc51686a23d1",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:26.782811Z",
-     "iopub.status.busy": "2026-01-06T08:36:26.781678Z",
-     "iopub.status.idle": "2026-01-06T08:36:31.006814Z",
-     "shell.execute_reply": "2026-01-06T08:36:31.005778Z"
-    },
     "lc_cell_meme": {
      "current": "175e7ff2-dfaf-11f0-99a8-12ab7e3bb6be-1-6263",
      "history": [
@@ -9719,7 +9260,7 @@
    "source": [
     "text = 'test 下線、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['format_underlined', 'format_color_text'])\n",
@@ -9732,7 +9273,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "0f4677e3-4fa4-4340-8348-75663545485c",
    "metadata": {
@@ -9806,12 +9346,6 @@
    "id": "a9b2c68f-db02-4a7f-8dbf-fc8b3aa0f28f",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:31.562190Z",
-     "iopub.status.busy": "2026-01-06T08:36:31.561120Z",
-     "iopub.status.idle": "2026-01-06T08:36:36.272406Z",
-     "shell.execute_reply": "2026-01-06T08:36:36.271282Z"
-    },
     "lc_cell_meme": {
      "current": "1083a384-da2c-11f0-806b-12ab7e3bb6be-3-a1a8-7175-c69f",
      "execution_end_time": "2025-12-16T04:47:10.418Z",
@@ -9868,7 +9402,7 @@
    "source": [
     "text = 'test 太文字、斜体、取消線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_strikethrough'])\n",
@@ -9881,7 +9415,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "c0a61bdf-9523-412c-98c4-56bb47ee990e",
    "metadata": {
@@ -9950,12 +9483,6 @@
    "id": "ce10bf58-e44a-49ac-8268-74fe9c620d6e",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:36.801993Z",
-     "iopub.status.busy": "2026-01-06T08:36:36.801283Z",
-     "iopub.status.idle": "2026-01-06T08:36:41.037416Z",
-     "shell.execute_reply": "2026-01-06T08:36:41.036375Z"
-    },
     "lc_cell_meme": {
      "current": "0fb8f3b4-da2c-11f0-806b-12ab7e3bb6be-1-7152",
      "execution_end_time": "2025-12-16T04:47:15.006Z",
@@ -10112,7 +9639,7 @@
    "source": [
     "text = 'test 太文字、斜体、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_underlined'])\n",
@@ -10125,7 +9652,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "29073b93-badb-4239-ab89-ae86c07c311c",
    "metadata": {
@@ -10169,12 +9695,6 @@
    "id": "fffa94cb-ac1a-4ea6-aba4-1edffe0d97eb",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:41.545737Z",
-     "iopub.status.busy": "2026-01-06T08:36:41.544491Z",
-     "iopub.status.idle": "2026-01-06T08:36:46.299226Z",
-     "shell.execute_reply": "2026-01-06T08:36:46.298196Z"
-    },
     "lc_cell_meme": {
      "current": "e16d8ac6-da33-11f0-806b-12ab7e3bb6be-1-379e",
      "execution_end_time": "2025-12-16T04:47:19.576Z",
@@ -10231,7 +9751,7 @@
    "source": [
     "text = 'test 太文字、斜体、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_color_text'])\n",
@@ -10244,7 +9764,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "23107f65-b7f4-4e13-aad0-338cfb76ce45",
    "metadata": {
@@ -10293,12 +9812,6 @@
    "id": "574f2963-2c36-4790-9835-123361724b4e",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:46.825112Z",
-     "iopub.status.busy": "2026-01-06T08:36:46.824052Z",
-     "iopub.status.idle": "2026-01-06T08:36:51.016292Z",
-     "shell.execute_reply": "2026-01-06T08:36:51.015042Z"
-    },
     "lc_cell_meme": {
      "current": "e0d53ac8-da33-11f0-806b-12ab7e3bb6be-1-558b",
      "execution_end_time": "2025-12-16T04:47:24.481Z",
@@ -10355,7 +9868,7 @@
    "source": [
     "text = 'test 太文字、取消、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_strikethrough', 'format_underlined'])\n",
@@ -10368,7 +9881,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "2ce056cc-b7cd-4104-a24c-026264114212",
    "metadata": {
@@ -10417,12 +9929,6 @@
    "id": "06f9d597-9dc5-4984-b1dc-1279ece9f4f0",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:51.541314Z",
-     "iopub.status.busy": "2026-01-06T08:36:51.540122Z",
-     "iopub.status.idle": "2026-01-06T08:36:56.521681Z",
-     "shell.execute_reply": "2026-01-06T08:36:56.520661Z"
-    },
     "lc_cell_meme": {
      "current": "e000a3f8-da33-11f0-806b-12ab7e3bb6be-1-7ba4",
      "execution_end_time": "2025-12-16T04:47:29.408Z",
@@ -10479,7 +9985,7 @@
    "source": [
     "text = 'test 太文字、取消、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_strikethrough', 'format_color_text'])\n",
@@ -10492,7 +9998,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "dfce8a65-b0f9-4d23-b01e-4a04e299bc6f",
    "metadata": {
@@ -10536,12 +10041,6 @@
    "id": "8f907371-996d-4c26-b30c-d9ef5188da8b",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:36:57.053773Z",
-     "iopub.status.busy": "2026-01-06T08:36:57.053006Z",
-     "iopub.status.idle": "2026-01-06T08:37:01.329233Z",
-     "shell.execute_reply": "2026-01-06T08:37:01.328216Z"
-    },
     "lc_cell_meme": {
      "current": "dfb029d2-da33-11f0-806b-12ab7e3bb6be-1-41fc",
      "execution_end_time": "2025-12-16T04:47:34.214Z",
@@ -10603,7 +10102,7 @@
    "source": [
     "text = 'test 太文字、下線、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_underlined', 'format_color_text'])\n",
@@ -10616,7 +10115,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "b8d22c2d-4a8c-4eb7-ac7a-cab45a5d2fb6",
    "metadata": {
@@ -10665,12 +10163,6 @@
    "id": "94824ec7-cf82-4a16-b325-00bd129e20cf",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:37:01.888229Z",
-     "iopub.status.busy": "2026-01-06T08:37:01.887088Z",
-     "iopub.status.idle": "2026-01-06T08:37:06.972687Z",
-     "shell.execute_reply": "2026-01-06T08:37:06.971294Z"
-    },
     "lc_cell_meme": {
      "current": "df189b6c-da33-11f0-806b-12ab7e3bb6be-1-eaca",
      "execution_end_time": "2025-12-16T04:47:39.038Z",
@@ -10727,7 +10219,7 @@
    "source": [
     "text = 'test 太文字、斜体、取消、下線'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_strikethrough', 'format_underlined'])\n",
@@ -10740,7 +10232,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "bd5c83ab-0bfc-42bc-8436-caaf0356f83f",
    "metadata": {
@@ -10789,12 +10280,6 @@
    "id": "e968d8b4-c6ba-4f04-95d0-eaac8232e4ec",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:37:07.511988Z",
-     "iopub.status.busy": "2026-01-06T08:37:07.511054Z",
-     "iopub.status.idle": "2026-01-06T08:37:11.585558Z",
-     "shell.execute_reply": "2026-01-06T08:37:11.584235Z"
-    },
     "lc_cell_meme": {
      "current": "de77c3e0-da33-11f0-806b-12ab7e3bb6be-1-93b9",
      "execution_end_time": "2025-12-16T04:47:44.016Z",
@@ -10851,7 +10336,7 @@
    "source": [
     "text = 'test 太文字、斜体、取消、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_strikethrough', 'format_color_text'])\n",
@@ -10864,7 +10349,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "cebb8382-5acd-4019-8903-d5773623197b",
    "metadata": {
@@ -10913,12 +10397,6 @@
    "id": "d2d058e1-5401-4a7d-b0a4-906b7ebcfe2c",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:37:12.155533Z",
-     "iopub.status.busy": "2026-01-06T08:37:12.154467Z",
-     "iopub.status.idle": "2026-01-06T08:37:17.062266Z",
-     "shell.execute_reply": "2026-01-06T08:37:17.060928Z"
-    },
     "lc_cell_meme": {
      "current": "ddef3ffc-da33-11f0-806b-12ab7e3bb6be-1-4199",
      "execution_end_time": "2025-12-16T04:47:48.942Z",
@@ -10975,7 +10453,7 @@
    "source": [
     "text = 'test 太文字、斜体、下線、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_underlined', 'format_color_text'])\n",
@@ -10988,7 +10466,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "594fdc86-54e7-417c-a741-84a5683df078",
    "metadata": {
@@ -11032,12 +10509,6 @@
    "id": "c9537b85-b780-494d-ae7e-ecfc9b579a42",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:37:17.606601Z",
-     "iopub.status.busy": "2026-01-06T08:37:17.605682Z",
-     "iopub.status.idle": "2026-01-06T08:37:21.607193Z",
-     "shell.execute_reply": "2026-01-06T08:37:21.605843Z"
-    },
     "lc_cell_meme": {
      "current": "dd3c0fc2-da33-11f0-806b-12ab7e3bb6be-1-ab9d",
      "execution_end_time": "2025-12-16T04:47:53.791Z",
@@ -11099,7 +10570,7 @@
    "source": [
     "text = 'test 太文字、取消線、下線、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'format_strikethrough', 'format_underlined', 'format_color_text'])\n",
@@ -11112,7 +10583,6 @@
    ]
   },
   {
-   "attachments": {},
    "cell_type": "markdown",
    "id": "89394919-a358-4203-9a00-abfd8828964d",
    "metadata": {
@@ -11161,12 +10631,6 @@
    "id": "e85d9053-db10-429c-a469-337dcd137edb",
    "metadata": {
     "deletable": true,
-    "execution": {
-     "iopub.execute_input": "2026-01-06T08:37:22.158498Z",
-     "iopub.status.busy": "2026-01-06T08:37:22.157260Z",
-     "iopub.status.idle": "2026-01-06T08:37:27.104670Z",
-     "shell.execute_reply": "2026-01-06T08:37:27.103626Z"
-    },
     "lc_cell_meme": {
      "current": "dca02f12-da33-11f0-806b-12ab7e3bb6be-1-9523",
      "execution_end_time": "2025-12-16T04:47:58.911Z",
@@ -11268,7 +10732,7 @@
    "source": [
     "text = 'test 太文字、斜体、取消線、下線、フォントカラーが赤'\n",
     "async def _step(page):\n",
-    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
     "    await grdm.fill_text(page, text)\n",
     "    await grdm.select_text_range(page, text)\n",
     "    await grdm.click_wiki_menu_save(page, ['strongWiki', 'italicWiki', 'format_strikethrough', 'format_underlined', 'format_color_text'])\n",
@@ -11280,6 +10744,910 @@
     "await run_pw(_step)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "b2e2b7f9",
+   "metadata": {},
+   "source": [
+    "## 本文を変更せず Close ボタンをクリックする\n",
+    "\n",
+    "- 確認ダイアログ（#closeConfirmModal）が表示されないこと\n",
+    "- 編集モードが終了し、閲覧モード（「編集」ボタンが表示されること）に戻ること\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "ebbbb061",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "async def _step(page):\n",
+    "    # 前セルの保存後は閲覧モードに戻ることがある\n",
+    "    if not await page.locator('#mMenuBar').is_visible():\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "\n",
+    "    await expect(page.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 本文は変更しない → Close（閉じる）をクリック\n",
+    "    await page.locator('#revert-button').click()\n",
+    "\n",
+    "    # 確認ダイアログが出ないこと\n",
+    "    await expect(page.locator('#closeConfirmModal')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 閲覧モードに戻ったこと\n",
+    "    await expect(page.locator('#mMenuBar')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditorFooter')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "9da14719",
+   "metadata": {},
+   "source": [
+    "## 本文を変更して Close ボタンをクリックする\n",
+    "\n",
+    "- 確認ダイアログ（#closeConfirmModal）が表示されること\n",
+    "- ダイアログに「編集内容は保存されていません。閉じる前に保存しますか？」が表示されること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "8c544549",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "async def _step(page):\n",
+    "    await grdm.open_edit_wiki(page)\n",
+    "    await grdm.replace_wiki_text(page, '本文変更Closeテスト')\n",
+    "\n",
+    "    await page.locator('#revert-button').click()\n",
+    "\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(modal).to_contain_text('未保存の変更')\n",
+    "    await expect(modal).to_contain_text('編集内容は保存されていません。閉じる前に保存しますか？')\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "02cf3a4b",
+   "metadata": {},
+   "source": [
+    "## 確認ダイアログで「キャンセル」をクリックする\n",
+    "\n",
+    "- 確認ダイアログ（#closeConfirmModal）が閉じること\n",
+    "- 編集モードが継続すること（メニューバー・編集エリアが表示されたままであること）"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e7f425d6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "\n",
+    "    # 「本文を変更して Close」直後はダイアログが開いたまま・編集モードのままなので、その場合は準備を省略\n",
+    "    if not await modal.is_visible():\n",
+    "        if not await page.locator('#mMenuBar').is_visible():\n",
+    "            await grdm.open_edit_wiki(page)\n",
+    "        await grdm.replace_wiki_text(page, 'キャンセル後変更テスト')\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    await page.locator('#closeConfirmModal button.btn-default[data-dismiss=\"modal\"]').click()\n",
+    "\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 編集モードのまま\n",
+    "    await expect(page.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditorFooter')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "46aad814",
+   "metadata": {},
+   "source": [
+    "## 確認ダイアログで「破棄」をクリックする\n",
+    "\n",
+    "- 確認ダイアログ（#closeConfirmModal）が閉じること\n",
+    "- 編集モードが終了し、閲覧モード（「編集」ボタンが表示されること）に戻ること\n",
+    "- 未保存の変更が保存されず、閲覧画面に反映されないこと"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f1581d2a",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "\n",
+    "    if not await modal.is_visible():\n",
+    "        if not await page.locator('#mMenuBar').is_visible():\n",
+    "            await grdm.open_edit_wiki(page)\n",
+    "        await grdm.replace_wiki_text(page, '破棄Close変更テスト')\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    await page.locator('#closeConfirmModal button.btn-danger').click()\n",
+    "\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 閲覧モードに戻る（変更なし Close と同じ）\n",
+    "    await expect(page.locator('#mMenuBar')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditorFooter')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 破棄されたこと（未保存の変更が閲覧画面に出ない）\n",
+    "    await expect(page.locator('#wikiViewRender')).not_to_contain_text('破棄Close変更テスト', timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "a5d5496f",
+   "metadata": {},
+   "source": [
+    "## 確認ダイアログで「保存して閉じる」をクリックする\n",
+    "\n",
+    "- 確認ダイアログ（#closeConfirmModal）が閉じること\n",
+    "- 編集モードが終了し、閲覧モード（「編集」ボタンが表示されること）に戻ること\n",
+    "- 未保存の変更が保存され、閲覧画面（#wikiViewRender）に反映されること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "dcc9edc6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    save_text = '保存して閉じる変更テスト'\n",
+    "\n",
+    "    if not await modal.is_visible():\n",
+    "        if not await page.locator('#mMenuBar').is_visible():\n",
+    "            await grdm.open_edit_wiki_collab(page)\n",
+    "        await grdm.append_wiki_text(page, save_text)\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    async with page.expect_navigation(timeout=transition_timeout):\n",
+    "        await page.locator('#closeConfirmModal button.btn-success').click()\n",
+    "\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 閲覧モードに戻る（変更なし Close・破棄 Close と同じ）\n",
+    "    await expect(page.locator('#mMenuBar')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditorFooter')).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 保存されたこと（破棄 Close の not_to_contain_text の逆）\n",
+    "    await expect(page.locator('#wikiViewRender')).to_contain_text(save_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7d85783f",
+   "metadata": {},
+   "source": [
+    "## 破棄後に再編集すると DB の保存済み本文が表示される\n",
+    "\n",
+    "- 編集モードで未保存の変更を加え、「破棄」で閉じること\n",
+    "- 閲覧画面に破棄した変更が反映されないこと\n",
+    "- 再度「編集」をクリックすると、DB に保存済みの本文（「保存して閉じる」で保存した `保存して閉じる変更テスト`）が編集エリアに表示されること\n",
+    "- 破棄した未保存の変更（`破棄再編集テスト`）は編集エリアに表示されないこと"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "991df6ff",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    saved_text = '保存して閉じる変更テスト'   # 「保存して閉じる」で DB に保存済み\n",
+    "    discard_text = '破棄再編集テスト'  # 今回破棄する未保存の変更\n",
+    "    editor = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "\n",
+    "    # 破棄フロー（「破棄」Close テストと同様）\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    await expect(editor).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "    await grdm.append_wiki_text(page, discard_text)\n",
+    "    await page.locator('#revert-button').click()\n",
+    "    await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    await page.locator('#closeConfirmModal button.btn-danger').click()\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 閲覧モードに戻り、破棄されたこと\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).not_to_contain_text(discard_text, timeout=transition_timeout)\n",
+    "\n",
+    "    # 再編集 → DB の保存済み本文が表示される\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    await expect(editor).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "    await expect(editor).not_to_contain_text(discard_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "60d76ae5",
+   "metadata": {},
+   "source": [
+    "## 保存して閉じた後に再編集すると保存した内容が表示される\n",
+    "\n",
+    "- 編集モードで未保存の変更を加え、「保存して閉じる」で閉じること\n",
+    "- 閲覧画面（#wikiViewRender）に保存した変更（`保存して閉じる再編集テスト`）が反映されること\n",
+    "- 再度「編集」をクリックすると、保存した内容が編集エリアに表示されること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "19e8366c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    save_text = '保存して閉じる再編集テスト'\n",
+    "    editor = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "\n",
+    "    # 「破棄後に再編集…」直後は編集モードのままなので、その場合は open_edit_wiki を省略\n",
+    "    if not await page.locator('#mMenuBar').is_visible():\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "\n",
+    "    await grdm.append_wiki_text(page, save_text)\n",
+    "    await page.locator('#revert-button').click()\n",
+    "    await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    async with page.expect_navigation(timeout=transition_timeout):\n",
+    "        await page.locator('#closeConfirmModal button.btn-success').click()\n",
+    "\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).to_contain_text(save_text, timeout=transition_timeout)\n",
+    "\n",
+    "    # 再編集 → 保存した内容が編集エリアに表示される\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    await expect(editor).to_contain_text(save_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "b7c0dcf8",
+   "metadata": {},
+   "source": [
+    "## フッターの「保存」後に離脱警告が出ない\n",
+    "\n",
+    "- 編集モードで未保存の変更を加え、フッターの「保存」ボタン（Close 確認ダイアログとは別）で保存すること\n",
+    "- 保存によるページ遷移時に **beforeunload の離脱警告が出ない** こと\n",
+    "- 閲覧画面（#wikiViewRender）に保存した変更（`フッター保存テスト`）が反映されること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "13bdf855",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    save_text = 'フッター保存テスト'\n",
+    "\n",
+    "    # 「保存して閉じた後に再編集…」直後は編集モードのまま\n",
+    "    if not await page.locator('#mMenuBar').is_visible():\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "\n",
+    "    await grdm.append_wiki_text(page, save_text)\n",
+    "\n",
+    "    async def save_action():\n",
+    "        async with page.expect_navigation(timeout=transition_timeout):\n",
+    "            await page.locator('//input[@type=\"submit\" and @value=\"保存\"]').click()\n",
+    "\n",
+    "    await grdm.expect_no_dialog(page, save_action, transition_timeout)\n",
+    "\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).to_contain_text(save_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "c07c0937",
+   "metadata": {},
+   "source": [
+    "## 未保存のままページを離れようとすると離脱警告が出る\n",
+    "\n",
+    "- 編集モードで未保存の変更を加え、**保存しない** こと\n",
+    "- Close 確認ダイアログが出ることで、未保存状態であることを確認すること\n",
+    "- ページを離れようとすると **beforeunload の離脱警告** が表示されること（本テストでは `window.location.reload()` で発火）\n",
+    "- 警告で離脱をキャンセルすると **編集モードが維持** され、未保存の変更（`離脱警告未保存テスト`）が編集エリアに残ること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "2c01d9d1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    unsaved_text = '離脱警告未保存テスト'\n",
+    "    editor = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "\n",
+    "    # 前回失敗で Close 確認が残っていればキャンセル\n",
+    "    if await modal.is_visible():\n",
+    "        await page.locator('#closeConfirmModal button.btn-default[data-dismiss=\"modal\"]').click()\n",
+    "        await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 「フッター保存後に離脱警告が出ない」直後は編集モードのまま\n",
+    "    if not await page.locator('#mMenuBar').is_visible():\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "\n",
+    "    await grdm.append_wiki_text(page, unsaved_text)\n",
+    "    await expect(editor).to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "    # 未保存であること（editModeOff と同じ dirty 判定）\n",
+    "    await page.locator('#revert-button').click()\n",
+    "    await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "    await page.locator('#closeConfirmModal button.btn-default[data-dismiss=\"modal\"]').click()\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    async def reload_action():\n",
+    "        await page.evaluate('window.location.reload()')\n",
+    "\n",
+    "    await grdm.expect_beforeunload(page, reload_action, transition_timeout)\n",
+    "\n",
+    "    await expect(page.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(editor).to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "ca00ce90",
+   "metadata": {},
+   "source": [
+    "## 新規 Wiki 作成直後にリロードなしで入力できる\n",
+    "\n",
+    "- 新規 Wiki ページを追加し、作成によるページ遷移の直後であること（**追加の reload は行わない**）\n",
+    "- 作成直後はプレビューで開くため「編集」を押し、編集 UI（`#mMenuBar`・編集エリア）ですぐ入力できること\n",
+    "- 編集エリアに `新規作成直後入力テスト` を入力できること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "08cd9815",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    create_immediate_wikiname = '新規作成直後テストWiki'\n",
+    "    input_text = '新規作成直後入力テスト'\n",
+    "    editor = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    wiki_link = page.locator(f'//*[contains(@class, \"title-text\")]//a[text()=\"{create_immediate_wikiname}\"]')\n",
+    "\n",
+    "    async def _open_create_immediate_wiki():\n",
+    "        if await page.locator('#pageName').is_visible():\n",
+    "            if (await page.locator('#pageName').inner_text()).strip() == create_immediate_wikiname:\n",
+    "                return\n",
+    "        await grdm.goto_wiki_by_name(page, create_immediate_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    # 「離脱警告」テスト直後など編集モードの場合は閲覧へ\n",
+    "    if await page.locator('#mMenuBar').is_visible():\n",
+    "        if not await modal.is_visible():\n",
+    "            await page.locator('#revert-button').click()\n",
+    "        try:\n",
+    "            await expect(modal).to_be_visible(timeout=3000)\n",
+    "            await page.locator('#closeConfirmModal button.btn-danger').click()\n",
+    "            await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "        except AssertionError:\n",
+    "            pass\n",
+    "        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "    # 再実行時は既存ページを削除してから新規作成\n",
+    "    if await wiki_link.count() > 0:\n",
+    "        await _open_create_immediate_wiki()\n",
+    "        await expect(page.locator('#pageName')).to_have_text(create_immediate_wikiname, timeout=transition_timeout)\n",
+    "        await page.locator('div[data-target=\"#deleteWiki\"]').click()\n",
+    "        async with page.expect_navigation(timeout=transition_timeout):\n",
+    "            await page.locator('#delete-wiki').click()\n",
+    "\n",
+    "    await page.locator('div[data-target=\"#newWiki\"]').click()\n",
+    "    await expect(page.locator('h3.modal-title', has_text='新規Wikiページを追加')).to_be_visible(timeout=transition_timeout)\n",
+    "    await page.locator('input[name=\"addHierarchy\"][value=\"same\"]').check()\n",
+    "    await page.fill('#data', create_immediate_wikiname)\n",
+    "    async with page.expect_navigation(timeout=transition_timeout):\n",
+    "        await page.locator('#add-wiki-submit').click()\n",
+    "    await expect(page.locator('#pageName')).to_have_text(create_immediate_wikiname, timeout=transition_timeout)\n",
+    "\n",
+    "    # 作成遷移直後（reload なし）。アプリは preview で開くので「編集」へ\n",
+    "    await grdm.open_edit_wiki(page)\n",
+    "\n",
+    "    await grdm.replace_wiki_text(page, input_text)\n",
+    "    await expect(editor).to_contain_text(input_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "de50410a",
+   "metadata": {},
+   "source": [
+    "## 共同編集中は未保存変更があっても Close 確認ダイアログが出ない\n",
+    "\n",
+    "- 同一ユーザーで2タブを開き、`New Wiki` を共同編集する\n",
+    "- タブ A で未保存の変更を加えたうえで Close をクリックする\n",
+    "- 確認ダイアログ（`#closeConfirmModal`）が**表示されない**こと\n",
+    "- タブ A はプレビュー（閲覧）に戻ること（`#editWysiwyg` 表示・`#mMenuBar` 非表示）\n",
+    "- タブ B は編集モードのまま継続すること"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "d061ee4a",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    unsaved_text = '共同編集Close未保存テスト'\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    editor = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "\n",
+    "    # 「新規 Wiki 作成直後…」直後など: 編集モードのまま別 Wiki へ goto すると ERR_ABORTED になるため先に閲覧へ\n",
+    "    await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    on_new_wiki = (\n",
+    "        await page.locator('#pageName').is_visible()\n",
+    "        and (await page.locator('#pageName').inner_text()).strip() == new_wikiname\n",
+    "    )\n",
+    "    if not on_new_wiki:\n",
+    "        await grdm.goto_wiki_by_name(page, new_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "\n",
+    "    page_b = await grdm.open_collaborative_peer(page, transition_timeout=transition_timeout)\n",
+    "    try:\n",
+    "        await grdm.append_wiki_text(page, unsaved_text)\n",
+    "        await expect(editor).to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).not_to_be_visible(timeout=3000)\n",
+    "\n",
+    "        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "        await expect(page.locator('#mMenuBar')).not_to_be_visible(timeout=transition_timeout)\n",
+    "        await expect(page.locator('#mEditorFooter')).not_to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "        await expect(page_b.locator('#mMenuBar')).to_be_visible(timeout=transition_timeout)\n",
+    "        await expect(page_b.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')).to_be_visible(timeout=transition_timeout)\n",
+    "    finally:\n",
+    "        await page_b.close()\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "eba04121",
+   "metadata": {},
+   "source": [
+    "## Close 後に再 Edit すると相手側に名前が再表示される\n",
+    "\n",
+    "- 同一ユーザーで2タブを開き、`New Wiki` を共同編集する\n",
+    "- タブ A が Close して共同編集セッションから抜ける\n",
+    "- タブ B の編集画面に、タブ A のユーザー名（`.ProseMirror-yjs-cursor` 内ラベル）が**表示されない**こと\n",
+    "- タブ A が再度「編集」を押して戻る\n",
+    "- タブ B の編集画面に、タブ A のユーザー名が**再表示される**こと"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "bf5e27c2",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    editor_a = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "\n",
+    "    await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    on_new_wiki = (\n",
+    "        await page.locator('#pageName').is_visible()\n",
+    "        and (await page.locator('#pageName').inner_text()).strip() == new_wikiname\n",
+    "    )\n",
+    "    if not on_new_wiki:\n",
+    "        await grdm.goto_wiki_by_name(page, new_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    collaborator_name = await grdm.get_wiki_user_fullname(page)\n",
+    "\n",
+    "    page_b = await grdm.open_collaborative_peer(page, transition_timeout=transition_timeout)\n",
+    "    try:\n",
+    "        await editor_a.click()\n",
+    "        await page.keyboard.press('End')\n",
+    "        await grdm.wait_awareness_settle(page_b)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=True, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).not_to_be_visible(timeout=3000)\n",
+    "        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "        await grdm.wait_awareness_settle(page_b)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=False, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "        await editor_a.click()\n",
+    "        await page.keyboard.press('End')\n",
+    "        await grdm.wait_awareness_settle(page_b)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=True, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "\n",
+    "        await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "        await grdm.leave_edit_wiki_if_open(page_b, transition_timeout=transition_timeout)\n",
+    "    finally:\n",
+    "        await page_b.close()\n",
+    "\n",
+    "await run_pw(_step)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "c2f8eef5",
+   "metadata": {},
+   "source": [
+    "## A が Close・B が保存した後、A 再 Edit で B の追記が表示される\n",
+    "\n",
+    "- 同一ユーザーで2タブを開き、`New Wiki` を共同編集する\n",
+    "- タブ A で `A追記Closeテスト` を**末尾に追記**し、Close して共同編集セッションから抜ける\n",
+    "- タブ B でも `B保存追記テスト` を**末尾に追記**し、フッターの「保存」で DB に保存する\n",
+    "  - A・B とも `append_wiki_text`（キーボードで追記するのと同じ操作）\n",
+    "- タブ A が再度「編集」を押す\n",
+    "- タブ A の編集エリアに `B保存追記テスト` が表示されること\n",
+    "\n",
+    "**補足（何を確認しているか）**\n",
+    "\n",
+    "- 手動と同じ流れ: A Close → B 追記・保存 → A 再 Edit → 編集エリアを確認\n",
+    "- Close 中の A 画面（プレビュー）は更新されないため、**Close 中の `#mEditor` は見ない**\n",
+    "- 再 Edit では DB から読み直さない（共同編集 Close 後もライブ Y.Doc を使う）"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "20c0ef99",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    editor_a = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    text_a = 'A追記Closeテスト'\n",
+    "    text_b = 'B保存追記テスト'\n",
+    "\n",
+    "    await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    on_new_wiki = (\n",
+    "        await page.locator('#pageName').is_visible()\n",
+    "        and (await page.locator('#pageName').inner_text()).strip() == new_wikiname\n",
+    "    )\n",
+    "    if not on_new_wiki:\n",
+    "        await grdm.goto_wiki_by_name(page, new_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    # ① A・B で共同編集を開始\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    page_b = await grdm.open_collaborative_peer(page, transition_timeout=transition_timeout)\n",
+    "    editor_b = page_b.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    try:\n",
+    "        # ② タブ A で末尾に追記 → Close（ダイアログなし）\n",
+    "        await grdm.append_wiki_text(page, text_a)\n",
+    "        await expect(editor_a).to_contain_text(text_a, timeout=transition_timeout)\n",
+    "\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).not_to_be_visible(timeout=3000)\n",
+    "        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "\n",
+    "        # ③ タブ B で末尾に追記 → 保存\n",
+    "        await grdm.append_wiki_text(page_b, text_b)\n",
+    "        await expect(editor_b).to_contain_text(text_b, timeout=transition_timeout)\n",
+    "        await grdm.click_wiki_footer_save(page_b, transition_timeout=transition_timeout)\n",
+    "        await expect(page_b.locator('#wikiViewRender')).to_contain_text(text_b, timeout=transition_timeout)\n",
+    "\n",
+    "        # ④ タブ A が再 Edit → B の追記が表示される（手動と同じ確認タイミング）\n",
+    "        await page.bring_to_front()\n",
+    "        await grdm.open_edit_wiki_collab(page)\n",
+    "        await expect(editor_a).to_contain_text(text_b, timeout=transition_timeout)\n",
+    "\n",
+    "        await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "        await grdm.leave_edit_wiki_if_open(page_b, transition_timeout=transition_timeout)\n",
+    "        await grdm.wait_awareness_settle(page, ms=1000)\n",
+    "    finally:\n",
+    "        await page_b.close()\n",
+    "\n",
+    "await run_pw(_step)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "cd1082bf",
+   "metadata": {},
+   "source": [
+    "## A が Close・B が編集中のとき、A 再 Edit で B のライブ内容が表示される\n",
+    "\n",
+    "- 同一ユーザーで2タブを開き、`New Wiki` を共同編集する\n",
+    "- タブ A で `A追記Closeライブテスト` を末尾に追記し、Close して共同編集セッションから抜ける\n",
+    "- タブ B は**保存せず**編集を続け、`B編集中追記テスト` を末尾に追記する\n",
+    "- タブ A が再度「編集」を押す → `Live editing mode` となり、B 側に A の名前が再表示されること\n",
+    "- 再 Edit 後、`#mEditor` に `A追記Closeライブテスト` と `B編集中追記テスト` が表示されること\n",
+    "\n",
+    "B が保存したケース（Step 13）との違い: 本 Step では **B は保存しない** 点です。\n",
+    "\n",
+    "**自動化補足:** A Close 後、Playwright から同一 B タブへ入力すると Yjs に届かないことがあるため、③ では `handoff_to_fresh_collab_peer` で live Y.Doc 参加用の新タブへ切り替える（手動で別ウィンドウを開く操作に相当）。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e58d78be",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    editor_a = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    text_a = 'A追記Closeライブテスト'\n",
+    "    text_b = 'B編集中追記テスト'\n",
+    "\n",
+    "    await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    on_new_wiki = (\n",
+    "        await page.locator('#pageName').is_visible()\n",
+    "        and (await page.locator('#pageName').inner_text()).strip() == new_wikiname\n",
+    "    )\n",
+    "    if not on_new_wiki:\n",
+    "        await grdm.goto_wiki_by_name(page, new_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    # ① A・B で共同編集を開始\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    await grdm.wait_awareness_settle(page, ms=1000)\n",
+    "    collaborator_name = await grdm.get_wiki_user_fullname(page)\n",
+    "\n",
+    "    page_b = await grdm.open_collaborative_peer(page, transition_timeout=transition_timeout)\n",
+    "    editor_b = page_b.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    try:\n",
+    "        await editor_a.click()\n",
+    "        await page.keyboard.press('End')\n",
+    "        await grdm.wait_awareness_settle(page_b, ms=1000)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=True, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "\n",
+    "        # ② タブ A で末尾に追記 → Close（ダイアログなし）\n",
+    "        await grdm.append_wiki_text(page, text_a)\n",
+    "        await expect(editor_a).to_contain_text(text_a, timeout=transition_timeout)\n",
+    "        await page_b.bring_to_front()\n",
+    "        await expect(editor_b).to_contain_text(text_a, timeout=transition_timeout)\n",
+    "        await grdm.flush_collab_yjs(page, page_b, rounds=4, settle_ms=500)\n",
+    "        await page.bring_to_front()\n",
+    "        await grdm.wait_awareness_settle(page, ms=1000)\n",
+    "\n",
+    "        await page.locator('#revert-button').click()\n",
+    "        await expect(modal).not_to_be_visible(timeout=3000)\n",
+    "        await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "        await grdm.wait_awareness_settle(page_b, ms=1000)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=False, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "\n",
+    "        # A Close 後: 新タブで live Y.Doc に参加（Playwright 自動化向け workaround）\n",
+    "        page_b = await grdm.handoff_to_fresh_collab_peer(\n",
+    "            page_b, required_text=text_a, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "        editor_b = page_b.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "\n",
+    "        # ③ タブ B は保存せず編集継続 → 末尾に追記\n",
+    "        await grdm.append_wiki_text_live(page_b, text_b)\n",
+    "        await expect(editor_b).to_contain_text(text_b, timeout=transition_timeout)\n",
+    "\n",
+    "        # ④ タブ A が再 Edit → B の追記が表示される\n",
+    "        await grdm.reopen_collab_edit_on_receiver(page, page_b, transition_timeout=transition_timeout)\n",
+    "        await grdm.expect_remote_collaborator_name(\n",
+    "            page_b, collaborator_name, visible=True, transition_timeout=transition_timeout\n",
+    "        )\n",
+    "        await expect(page.locator('#mEditor')).to_contain_text(text_a, timeout=transition_timeout)\n",
+    "        await grdm.wait_for_collab_meditor_text(\n",
+    "            page, text_b, peer_page=page_b, transition_timeout=transition_timeout, stable_checks=2\n",
+    "        )\n",
+    "\n",
+    "        await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "        await grdm.leave_edit_wiki_if_open(page_b, transition_timeout=transition_timeout)\n",
+    "        await grdm.wait_awareness_settle(page, ms=1000)\n",
+    "    finally:\n",
+    "        await page_b.close()\n",
+    "\n",
+    "await run_pw(_step)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "3102a5b3",
+   "metadata": {},
+   "source": [
+    "## 両者 Close 後に再 Edit すると DB 保存済み内容が表示される\n",
+    "\n",
+    "- 同一ユーザーで2タブを開き、`New Wiki` を共同編集する\n",
+    "- タブ B で `DB保存追記テスト` を末尾に追記し、フッターの「保存」で DB に保存する\n",
+    "- タブ A・B とも `破棄Close未保存テスト` を末尾に追記する（**保存しない**）\n",
+    "- タブ B が Close して共同編集セッションから抜け、タブ B を閉じる\n",
+    "- タブ A が Close すると確認ダイアログが表示される（他の編集者がいないため）→ **破棄** で閉じる\n",
+    "- タブ A が再度「編集」を押す\n",
+    "- 編集エリアに `DB保存追記テスト` が表示されること\n",
+    "- 未保存の `破棄Close未保存テスト` は編集エリアに表示されないこと\n",
+    "\n",
+    "B が編集中のライブ内容を表示するケースとの違い: 本テストでは **両者が Close し、A は破棄 Close 後に DB から読み直す** 点です。\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "072e9697",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import importlib\n",
+    "import scripts.grdm\n",
+    "grdm = importlib.reload(scripts.grdm)\n",
+    "\n",
+    "async def _step(page):\n",
+    "    modal = page.locator('#closeConfirmModal')\n",
+    "    editor_a = page.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    saved_text = 'DB保存追記テスト'\n",
+    "    unsaved_text = '破棄Close未保存テスト'\n",
+    "\n",
+    "    await grdm.leave_edit_wiki_if_open(page, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    on_new_wiki = (\n",
+    "        await page.locator('#pageName').is_visible()\n",
+    "        and (await page.locator('#pageName').inner_text()).strip() == new_wikiname\n",
+    "    )\n",
+    "    if not on_new_wiki:\n",
+    "        await grdm.goto_wiki_by_name(page, new_wikiname, transition_timeout=transition_timeout)\n",
+    "\n",
+    "    # ① A・B で共同編集を開始\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    page_b = await grdm.open_collaborative_peer(page, transition_timeout=transition_timeout)\n",
+    "    editor_b = page_b.locator('#mEditor .ProseMirror[contenteditable=\"true\"]')\n",
+    "    modal_b = page_b.locator('#closeConfirmModal')\n",
+    "    try:\n",
+    "        # ② B が DB に保存\n",
+    "        await grdm.append_wiki_text(page_b, saved_text)\n",
+    "        await grdm.click_wiki_footer_save(page_b, transition_timeout=transition_timeout)\n",
+    "        await expect(page_b.locator('#wikiViewRender')).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "\n",
+    "        # ③ 共同編集を再開し、未保存の変更を加える\n",
+    "        if not await page.locator('#mMenuBar').is_visible():\n",
+    "            await grdm.open_edit_wiki_collab(page)\n",
+    "        await grdm.open_edit_wiki_collab(page_b)\n",
+    "        await grdm.expect_live_editing(page, transition_timeout=transition_timeout)\n",
+    "        await grdm.expect_live_editing(page_b, transition_timeout=transition_timeout)\n",
+    "\n",
+    "        await grdm.append_wiki_text(page, unsaved_text)\n",
+    "        await grdm.append_wiki_text(page_b, unsaved_text)\n",
+    "        await expect(editor_a).to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "        await expect(editor_b).to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "        # ④ B が Close → タブ B を閉じる（A だけが残る）\n",
+    "        await page_b.locator('#revert-button').click()\n",
+    "        await expect(modal_b).not_to_be_visible(timeout=3000)\n",
+    "        await expect(page_b.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    finally:\n",
+    "        await page_b.close()\n",
+    "        await grdm.wait_awareness_settle(page)\n",
+    "\n",
+    "    # ⑤ A が Close（他編集者なし → 確認ダイアログ）→ 破棄\n",
+    "    await page.locator('#revert-button').click()\n",
+    "    await expect(modal).to_be_visible(timeout=transition_timeout)\n",
+    "    await page.locator('#closeConfirmModal button.btn-danger').click()\n",
+    "    await expect(modal).not_to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#editWysiwyg')).to_be_visible(timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "    await expect(page.locator('#wikiViewRender')).not_to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "    # ⑥ A が再 Edit → DB 保存済み内容が表示される\n",
+    "    await grdm.open_edit_wiki_collab(page)\n",
+    "    await expect(editor_a).to_contain_text(saved_text, timeout=transition_timeout)\n",
+    "    await expect(editor_a).not_to_contain_text(unsaved_text, timeout=transition_timeout)\n",
+    "\n",
+    "await run_pw(_step)\n"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "fbd73c64-3b58-495a-b728-d689e3294911",
@@ -11322,12 +11690,6 @@
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@@ -11437,12 +11799,6 @@
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@@ -11743,12 +12099,6 @@
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@@ -11864,17 +12214,21 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
   "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
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