diff --git a/docs/modules/shared/ui_foundation/editable-action-card.md b/docs/modules/shared/ui_foundation/editable-action-card.md
index 4c0a15f..81118c7 100644
--- a/docs/modules/shared/ui_foundation/editable-action-card.md
+++ b/docs/modules/shared/ui_foundation/editable-action-card.md
@@ -13,6 +13,7 @@ Das Pattern kapselt nur die technische Interaktion:
 - optionale Loeschbestaetigung mit konfigurierbarem Token
 - Deaktivieren der Loeschaktion bis zur gueltigen Bestaetigung
 - gleichzeitiges Bearbeiten mehrerer Karten
+- optionales Ein- und Ausblenden des Karteninhalts
 
 Fachliche Aktionen, API-Aufrufe, Validierung und die Aktualisierung fachlicher
 Daten bleiben beim owning Modul.
@@ -26,6 +27,9 @@ Bedienelemente verwenden folgende Attribute:
 - `data-shared-editable-card-cancel`
 - `data-shared-editable-card-read`
 - `data-shared-editable-card-form`
+- optional `data-shared-editable-card-collapsible`
+- optional `data-shared-editable-card-collapsed`
+- optional `data-shared-editable-card-toggle`
 - optional `data-shared-editable-card-delete`
 - optional `data-shared-editable-card-delete-confirmation`
 - optional `data-shared-editable-card-delete-input`
@@ -41,6 +45,20 @@ Das Loesch-Token wird je Karte mit
 Loeschen bleibt im owning Modul und verwendet den bestehenden fachlichen
 Handler.
 
+## Optionales Ein- und Ausblenden
+
+Eine Karte mit `data-shared-editable-card-collapsible` kann ihren Inhalt
+ein- und ausblenden. Mit `data-shared-editable-card-collapsed` wird der initial
+eingeklappte Zustand markiert. Der Toggle verwendet die Beschriftungen
+„Anzeigen“ und „Verbergen“. Beim Wechsel in den Bearbeitungsmodus wird der
+Inhalt eingeblendet und der Toggle deaktiviert. Nach dem Bearbeiten bleibt der
+aktuelle Sichtbarkeitszustand erhalten.
+
+Die zentrale Komponente stellt dafür `setVisibility(card, visible)`,
+`isVisible(card)` und `setToggleEnabled(card, enabled)` bereit. Fachmodule
+verwenden diese Methoden nur für fachliche Folgeaktionen wie das erneute
+Rendern nach dem Speichern.
+
 ## Nutzung im Lager
 
 Im Lager-Drawer verwenden die aktive Charge und offene Chargen das Pattern.
diff --git a/modules/shared/auth/ui/home.php b/modules/shared/auth/ui/home.php
index 27f59f5..229116a 100644
--- a/modules/shared/auth/ui/home.php
+++ b/modules/shared/auth/ui/home.php
@@ -965,7 +965,7 @@ function render_auth_home_page(array $user, array $otcProducts = [], array $otcM
     echo '</div>';
     echo '</section>';
     echo '<script src="/scripts/help-icon-overlays.js"></script>';
-    echo '<script src="/scripts/shared-editable-action-card.js?v=20260930-1"></script>';
+    echo '<script src="/scripts/shared-editable-action-card.js?v=20260930-2"></script>';
     echo '<script src="/scripts/shared-mobile-detail.js?v=20260925-1"></script>';
     echo '<script src="/scripts/large-table-column-resize.js?v=' . filemtime(__DIR__ . '/../../../../public/scripts/large-table-column-resize.js') . '"></script>';
     echo '<script>';
@@ -1206,9 +1206,8 @@ function render_auth_home_page(array $user, array $otcProducts = [], array $otcM
     echo "  const marketChecklistChapters = (checklist) => Array.isArray(checklist.chapters) ? checklist.chapters : [];";
     echo "  const marketChecklistReadBody = (checklist) => { const items = Array.isArray(checklist.items) ? checklist.items : []; const chapterSections = marketChecklistChapters(checklist).map((chapter) => { const chapterItems = items.filter((item) => item.chapter_key === chapter.key); const rows = chapterItems.map((item) => { const index = items.indexOf(item); return '<div class=\"market-checklist-item\"><button class=\"sg-checkbox-field sg-checkbox-field--on-grey' + (item.is_completed ? ' sg-form-active' : '') + '\" type=\"button\" role=\"checkbox\" aria-checked=\"' + (item.is_completed ? 'true' : 'false') + '\" aria-label=\"Checklistenpunkt ' + (index + 1) + '\" data-checklist-read-checkbox=\"' + index + '\"><span class=\"sg-checkbox-field__mark\" aria-hidden=\"true\">✓</span></button><span class=\"sg-body\">' + marketEscape(item.label || '') + '</span></div>'; }).join(''); return '<section class=\"sg-form-sections-card__chapter market-checklist-chapter\" data-checklist-chapter=\"' + marketEscape(chapter.key) + '\"><h3 class=\"sg-form-sections-card__chapter-title\">' + marketEscape(chapter.label) + '</h3><div class=\"market-checklist-list\">' + rows + '</div></section>'; }).join(''); return '<div class=\"market-checklist-chapters\">' + chapterSections + '</div><div class=\"market-checklist-comment\"><div class=\"sg-strong\">Kommentar</div><p class=\"sg-body\">' + marketDisplay(checklist.comment) + '</p></div><p class=\"sg-body\" data-checklist-read-status aria-live=\"polite\"></p>'; };";
     echo "  const marketChecklistEditBody = (checklist) => { const items = Array.isArray(checklist.items) ? checklist.items : []; const sections = marketChecklistChapters(checklist).map((chapter) => { const chapterItems = items.filter((item) => item.chapter_key === chapter.key); const rows = chapterItems.map((item) => '<label class=\"sg-labeled-input-row market-checklist-edit-row\" data-checklist-edit-item data-checklist-chapter-key=\"' + marketEscape(chapter.key) + '\"><span class=\"sg-label\"><button class=\"sg-checkbox-field sg-checkbox-field--on-grey' + (item.is_completed ? ' sg-form-active' : '') + '\" type=\"button\" role=\"checkbox\" aria-checked=\"' + (item.is_completed ? 'true' : 'false') + '\" aria-label=\"Checklistenpunkt abhaken\" data-checklist-edit-checkbox><span class=\"sg-checkbox-field__mark\" aria-hidden=\"true\">✓</span></button></span><span class=\"market-checklist-edit-control\"><input class=\"sg-interaction-element sg-input-single-line\" type=\"text\" value=\"' + marketEscape(item.label || '') + '\" data-checklist-label><button class=\"sg-interaction-element sg-button sg-button--warning market-checklist-delete\" type=\"button\" aria-label=\"Checklistenpunkt löschen\" data-checklist-delete-item>−</button></span></label>').join(''); const trailing = '<label class=\"sg-labeled-input-row market-checklist-edit-row market-checklist-edit-row--trailing\" data-checklist-edit-item data-checklist-trailing-item data-checklist-chapter-key=\"' + marketEscape(chapter.key) + '\"><span class=\"sg-label\"><button class=\"sg-checkbox-field sg-checkbox-field--on-grey\" type=\"button\" role=\"checkbox\" aria-checked=\"false\" aria-label=\"Neuen Checklistenpunkt abhaken\" data-checklist-edit-checkbox><span class=\"sg-checkbox-field__mark\" aria-hidden=\"true\">✓</span></button></span><span class=\"market-checklist-edit-control\"><input class=\"sg-interaction-element sg-input-single-line\" type=\"text\" value=\"\" aria-label=\"Neuer Checklistenpunkt\" data-checklist-label></span></label>'; return '<section class=\"sg-form-sections-card__chapter market-checklist-chapter\" data-checklist-chapter=\"' + marketEscape(chapter.key) + '\"><h3 class=\"sg-form-sections-card__chapter-title\">' + marketEscape(chapter.label) + '</h3><div class=\"market-checklist-edit-list\" data-checklist-edit-list data-checklist-chapter-key=\"' + marketEscape(chapter.key) + '\">' + rows + trailing + '</div></section>'; }).join(''); return sections + '<label class=\"sg-labeled-input-row market-checklist-comment-field\"><span class=\"sg-label\">Kommentar</span><textarea class=\"sg-interaction-element sg-input-multi-line\" name=\"comment\" rows=\"4\" data-checklist-comment>' + marketEscape(checklist.comment || '') + '</textarea></label>'; };";
-    echo "  const marketChecklistCard = (id, checklist) => { const headerClass = marketChecklistSignalSegment(checklist.items); const actions = '<button class=\"sg-interaction-element sg-button sg-button--active\" type=\"button\" data-checklist-open aria-expanded=\"false\">Anzeigen</button>' + marketEditButton('checklist', id); return '<article class=\"sg-card sg-card--content-card market-detail-card market-checklist-card--collapsed\" data-component=\"content-card\" data-shared-editable-action-card data-checklist-card><header class=\"sg-card-segment sg-card-segment--header ' + headerClass + ' sg-object-card__header\"><div class=\"sg-strong\">Checkliste</div><div class=\"sg-component-row\">' + actions + '</div></header><div class=\"sg-card-segment sg-card-segment--body sg-card-segment--gray\" data-shared-editable-card-read hidden>' + marketChecklistReadBody(checklist) + '</div><div class=\"sg-card-segment sg-card-segment--body sg-card-segment--gray\" data-shared-editable-card-form hidden><form class=\"sg-form-sections-card market-checklist-form\" data-market-checklist-form data-market-checklist-id=\"' + marketEscape(id) + '\"><div class=\"sg-form-sections-card__body\" data-pattern-part=\"form-body\">' + marketChecklistEditBody(checklist) + '</div><footer class=\"sg-form-sections-card__actions-segment\" data-pattern-part=\"form-actions-segment\"><div class=\"sg-form-sections-card__actions\" data-pattern-part=\"form-actions\"><button class=\"sg-interaction-element sg-button sg-button--active sg-form-sections-card__action\" type=\"button\" data-shared-editable-card-cancel>Abbrechen</button><button class=\"sg-interaction-element sg-button sg-button--process sg-form-sections-card__action\" type=\"submit\">Speichern</button></div></footer><p class=\"sg-body\" data-market-checklist-status aria-live=\"polite\"></p></form></div></article>'; };";
-    echo "  const setChecklistVisibility = (card, visible, showRead = visible) => { if (!card) { return; } card.classList.toggle('market-checklist-card--collapsed', !visible); const readView = card.querySelector('[data-shared-editable-card-read]'); const toggle = card.querySelector('[data-checklist-open]'); if (readView) { readView.hidden = !showRead; } if (toggle) { toggle.textContent = visible ? 'Verbergen' : 'Anzeigen'; toggle.setAttribute('aria-expanded', String(visible)); } };";
-    echo "  const setChecklistOpenButtonEnabled = (card, enabled) => { const toggle = card?.querySelector('[data-checklist-open]'); if (!toggle) { return; } toggle.disabled = !enabled; toggle.setAttribute('aria-disabled', String(!enabled)); toggle.classList.toggle('sg-button--inactive', !enabled); };";
+    echo "  const marketChecklistCard = (id, checklist) => { const headerClass = marketChecklistSignalSegment(checklist.items); const actions = '<button class=\"sg-interaction-element sg-button sg-button--active\" type=\"button\" data-shared-editable-card-toggle aria-expanded=\"false\">Anzeigen</button>' + marketEditButton('checklist', id); return '<article class=\"sg-card sg-card--content-card market-detail-card\" data-component=\"content-card\" data-shared-editable-action-card data-shared-editable-card-collapsible data-shared-editable-card-collapsed data-checklist-card><header class=\"sg-card-segment sg-card-segment--header ' + headerClass + ' sg-object-card__header\"><div class=\"sg-strong\">Checkliste</div><div class=\"sg-component-row\">' + actions + '</div></header><div class=\"sg-card-segment sg-card-segment--body sg-card-segment--gray\" data-shared-editable-card-read hidden>' + marketChecklistReadBody(checklist) + '</div><div class=\"sg-card-segment sg-card-segment--body sg-card-segment--gray\" data-shared-editable-card-form hidden><form class=\"sg-form-sections-card market-checklist-form\" data-market-checklist-form data-market-checklist-id=\"' + marketEscape(id) + '\"><div class=\"sg-form-sections-card__body\" data-pattern-part=\"form-body\">' + marketChecklistEditBody(checklist) + '</div><footer class=\"sg-form-sections-card__actions-segment\" data-pattern-part=\"form-actions-segment\"><div class=\"sg-form-sections-card__actions\" data-pattern-part=\"form-actions\"><button class=\"sg-interaction-element sg-button sg-button--active sg-form-sections-card__action\" type=\"button\" data-shared-editable-card-cancel>Abbrechen</button><button class=\"sg-interaction-element sg-button sg-button--process sg-form-sections-card__action\" type=\"submit\">Speichern</button></div></footer><p class=\"sg-body\" data-market-checklist-status aria-live=\"polite\"></p></form></div></article>'; };";
+    echo "  const setChecklistVisibility = (card, visible, showRead = visible) => { if (!window.SharedEditableActionCard) { return; } window.SharedEditableActionCard.setVisibility(card, visible); if (!showRead) { const readView = card?.querySelector('[data-shared-editable-card-read]'); if (readView) { readView.hidden = true; } } };";
     echo "  const setChecklistSignal = (card, items) => { const header = card?.querySelector('header'); if (!header) { return; } header.classList.remove('sg-card-segment--signal-red', 'sg-card-segment--signal-yellow', 'sg-card-segment--signal-green'); header.classList.add(marketChecklistSignalSegment(items)); };";
     echo "  const marketStatusCard = (id, values) => { const headerClass = marketStatusSegment(values.status); const textClass = headerClass === 'sg-card-segment--gray' ? '' : 'sg-text-on-dark'; const actions = marketEditButton('status', id); const header = '<header class=\"sg-card-segment sg-card-segment--header ' + headerClass + ' sg-object-card__header\" data-component-part=\"card-header\"><div class=\"sg-strong ' + textClass + '\">Status: ' + marketEscape(marketStatusLabel(values.status)) + '</div><div class=\"sg-component-row\">' + actions + '</div></header>'; return '<article class=\"sg-card sg-card--content-card market-detail-card\" data-component=\"content-card\" data-shared-editable-action-card>' + header + '<div class=\"sg-card-segment sg-card-segment--body sg-card-segment--gray\" data-shared-editable-card-form hidden>' + marketEditForm('status', id, values) + '</div></article>'; };";
     echo "  const marketEditButton = () => '<button class=\"sg-interaction-element sg-button sg-button--active\" type=\"button\" data-shared-editable-card-edit>Bearbeiten</button>';";
@@ -1246,9 +1245,9 @@ function render_auth_home_page(array $user, array $otcProducts = [], array $otcM
     echo "  const ensureChecklistTrailingItem = (form, list) => { const targetList = list || form?.querySelector('[data-checklist-edit-list]'); if (!targetList) { return; } const trailing = targetList.querySelector('[data-checklist-trailing-item]'); if (!trailing || (trailing.querySelector('[data-checklist-label]')?.value || '').trim() !== '') { const item = document.createElement('label'); item.className = 'sg-labeled-input-row market-checklist-edit-row market-checklist-edit-row--trailing'; item.dataset.checklistEditItem = ''; item.dataset.checklistTrailingItem = ''; item.dataset.checklistChapterKey = targetList.dataset.checklistChapterKey || ''; item.innerHTML = '<span class=\"sg-label\"><button class=\"sg-checkbox-field sg-checkbox-field--on-grey\" type=\"button\" role=\"checkbox\" aria-checked=\"false\" aria-label=\"Neuen Checklistenpunkt abhaken\" data-checklist-edit-checkbox><span class=\"sg-checkbox-field__mark\" aria-hidden=\"true\">✓</span></button></span><span class=\"market-checklist-edit-control\"><input class=\"sg-interaction-element sg-input-single-line\" type=\"text\" value=\"\" aria-label=\"Neuer Checklistenpunkt\" data-checklist-label></span>'; targetList.append(item); } };";
     echo "  const setChecklistCheckbox = (button, checked) => { if (!button) { return; } button.setAttribute('aria-checked', String(checked)); button.classList.toggle('sg-form-active', checked); };";
     echo "  const persistChecklistReadToggle = async (button) => { const drawer = getMarketDrawer(); const card = button.closest('[data-checklist-card]'); const status = card?.querySelector('[data-checklist-read-status]'); const index = Number(button.dataset.checklistReadCheckbox); let payload = {}; try { payload = drawer?.dataset.marketPayload ? JSON.parse(drawer.dataset.marketPayload) : {}; } catch (error) { return; } const sourceItems = Array.isArray(payload.occurrence?.checklist?.items) ? payload.occurrence.checklist.items : []; if (!sourceItems[index]) { return; } const previous = button.getAttribute('aria-checked') === 'true'; const next = !previous; setChecklistCheckbox(button, next); setChecklistCheckbox(card.querySelectorAll('[data-checklist-edit-checkbox]')[index], next); const items = Array.from(card.querySelectorAll('[data-checklist-read-checkbox]')).map((checkbox, itemIndex) => ({ chapter_key: sourceItems[itemIndex]?.chapter_key || '', label: sourceItems[itemIndex]?.label || '', is_completed: checkbox.getAttribute('aria-checked') === 'true' })); setChecklistSignal(card, items); button.disabled = true; if (status) { status.textContent = 'Speichern läuft …'; } try { const response = await fetch('/api/market-occurrence.php', { method: 'POST', credentials: 'same-origin', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': contentRoot.querySelector('[data-market-csrf-token]')?.dataset.marketCsrfToken || '' }, body: JSON.stringify({ action: 'update_checklist', id: payload.occurrence.id, items: items.map((item) => ({ chapter_key: item.chapter_key, label: item.label || '', is_completed: Boolean(item.is_completed) })), comment: payload.occurrence.checklist.comment || '' }) }); const result = await response.json(); if (!response.ok || !result.ok) { throw new Error(result.error || 'Speichern fehlgeschlagen.'); } payload.occurrence.checklist = result.checklist; if (drawer) { drawer.dataset.marketPayload = JSON.stringify(payload); } if (status) { status.textContent = ''; } } catch (error) { setChecklistCheckbox(button, previous); setChecklistCheckbox(card.querySelectorAll('[data-checklist-edit-checkbox]')[index], previous); const rollbackItems = Array.from(card.querySelectorAll('[data-checklist-read-checkbox]')).map((checkbox, itemIndex) => ({ chapter_key: sourceItems[itemIndex]?.chapter_key || '', label: sourceItems[itemIndex]?.label || '', is_completed: checkbox.getAttribute('aria-checked') === 'true' })); setChecklistSignal(card, rollbackItems); if (status) { status.textContent = error instanceof Error ? error.message : 'Speichern fehlgeschlagen.'; } } finally { button.disabled = false; } };";
-    echo "  document.addEventListener('click', (event) => { const checklistOpen = event.target.closest('[data-checklist-open]'); if (checklistOpen) { const card = checklistOpen.closest('[data-checklist-card]'); const visible = !card?.classList.contains('market-checklist-card--collapsed'); setChecklistVisibility(card, !visible); if (!visible) { card?.querySelector('[data-checklist-read-checkbox]')?.focus(); } return; } const checklistEdit = event.target.closest('[data-checklist-card] [data-shared-editable-card-edit]'); if (checklistEdit) { const checklistCard = checklistEdit.closest('[data-checklist-card]'); setChecklistVisibility(checklistCard, true, false); setChecklistOpenButtonEnabled(checklistCard, false); return; } const checklistCancel = event.target.closest('[data-checklist-card] [data-shared-editable-card-cancel]'); if (checklistCancel) { const checklistCard = checklistCancel.closest('[data-checklist-card]'); setChecklistVisibility(checklistCard, true); setChecklistOpenButtonEnabled(checklistCard, true); return; } const checkbox = event.target.closest('[data-checklist-edit-checkbox]'); if (checkbox) { event.preventDefault(); setChecklistCheckbox(checkbox, checkbox.getAttribute('aria-checked') !== 'true'); const editCard = checkbox.closest('[data-checklist-card]'); setChecklistSignal(editCard, Array.from(editCard?.querySelectorAll('[data-checklist-edit-item]') || []).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' }))); return; } const readCheckbox = event.target.closest('[data-checklist-read-checkbox]'); if (readCheckbox) { event.preventDefault(); void persistChecklistReadToggle(readCheckbox); return; } const deleteItem = event.target.closest('[data-checklist-delete-item]'); if (deleteItem) { const list = deleteItem.closest('[data-checklist-edit-list]'); deleteItem.closest('[data-checklist-edit-item]')?.remove(); ensureChecklistTrailingItem(deleteItem.closest('[data-market-checklist-form]'), list); const deleteCard = deleteItem.closest('[data-checklist-card]'); setChecklistSignal(deleteCard, Array.from(deleteCard?.querySelectorAll('[data-checklist-edit-item]') || []).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' }))); } });";
+    echo "  document.addEventListener('click', (event) => { const checkbox = event.target.closest('[data-checklist-edit-checkbox]'); if (checkbox) { event.preventDefault(); setChecklistCheckbox(checkbox, checkbox.getAttribute('aria-checked') !== 'true'); const editCard = checkbox.closest('[data-checklist-card]'); setChecklistSignal(editCard, Array.from(editCard?.querySelectorAll('[data-checklist-edit-item]') || []).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' }))); return; } const readCheckbox = event.target.closest('[data-checklist-read-checkbox]'); if (readCheckbox) { event.preventDefault(); void persistChecklistReadToggle(readCheckbox); return; } const deleteItem = event.target.closest('[data-checklist-delete-item]'); if (deleteItem) { const list = deleteItem.closest('[data-checklist-edit-list]'); deleteItem.closest('[data-checklist-edit-item]')?.remove(); ensureChecklistTrailingItem(deleteItem.closest('[data-market-checklist-form]'), list); const deleteCard = deleteItem.closest('[data-checklist-card]'); setChecklistSignal(deleteCard, Array.from(deleteCard?.querySelectorAll('[data-checklist-edit-item]') || []).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' }))); } });";
     echo "  document.addEventListener('input', (event) => { const input = event.target.closest('[data-market-checklist-form] [data-checklist-label]'); if (!input) { return; } const form = input.closest('[data-market-checklist-form]'); const item = input.closest('[data-checklist-edit-item]'); const list = input.closest('[data-checklist-edit-list]'); if (item?.hasAttribute('data-checklist-trailing-item') && input.value.trim() !== '') { item.removeAttribute('data-checklist-trailing-item'); } ensureChecklistTrailingItem(form, list); const card = input.closest('[data-checklist-card]'); setChecklistSignal(card, Array.from(card?.querySelectorAll('[data-checklist-edit-item]') || []).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' }))); });";
-    echo "  document.addEventListener('submit', async (event) => { const form = event.target.closest('[data-market-checklist-form]'); if (!form) { return; } event.preventDefault(); event.stopImmediatePropagation(); const status = form.querySelector('[data-market-checklist-status]'); const checklistWasVisible = form.closest('[data-checklist-card]')?.classList.contains('market-checklist-card--collapsed') === false; const items = Array.from(form.querySelectorAll('[data-checklist-edit-item]')).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ chapter_key: item.dataset.checklistChapterKey || item.closest('[data-checklist-edit-list]')?.dataset.checklistChapterKey || '', label: item.querySelector('[data-checklist-label]')?.value || '', is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' })); if (status) { status.textContent = 'Speichern läuft …'; } try { const response = await fetch('/api/market-occurrence.php', { method: 'POST', credentials: 'same-origin', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': contentRoot.querySelector('[data-market-csrf-token]')?.dataset.marketCsrfToken || '' }, body: JSON.stringify({ action: 'update_checklist', id: form.dataset.marketChecklistId, items, comment: form.querySelector('[data-checklist-comment]')?.value || '' }) }); const result = await response.json(); if (!response.ok || !result.ok) { throw new Error(result.error || 'Speichern fehlgeschlagen.'); } const trigger = contentRoot.querySelector('[data-market-drawer-open][aria-expanded=\"true\"]'); if (trigger) { await openMarketDrawer(trigger); if (checklistWasVisible) { setChecklistVisibility(getMarketDrawer()?.querySelector('[data-checklist-card]'), true); } } } catch (error) { if (status) { status.textContent = error instanceof Error ? error.message : 'Speichern fehlgeschlagen.'; } } });";
+    echo "  document.addEventListener('submit', async (event) => { const form = event.target.closest('[data-market-checklist-form]'); if (!form) { return; } event.preventDefault(); event.stopImmediatePropagation(); const status = form.querySelector('[data-market-checklist-status]'); const checklistWasVisible = window.SharedEditableActionCard?.isVisible(form.closest('[data-checklist-card]')) === true; const items = Array.from(form.querySelectorAll('[data-checklist-edit-item]')).filter((item) => !item.hasAttribute('data-checklist-trailing-item')).map((item) => ({ chapter_key: item.dataset.checklistChapterKey || item.closest('[data-checklist-edit-list]')?.dataset.checklistChapterKey || '', label: item.querySelector('[data-checklist-label]')?.value || '', is_completed: item.querySelector('[data-checklist-edit-checkbox]')?.getAttribute('aria-checked') === 'true' })); if (status) { status.textContent = 'Speichern läuft …'; } try { const response = await fetch('/api/market-occurrence.php', { method: 'POST', credentials: 'same-origin', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': contentRoot.querySelector('[data-market-csrf-token]')?.dataset.marketCsrfToken || '' }, body: JSON.stringify({ action: 'update_checklist', id: form.dataset.marketChecklistId, items, comment: form.querySelector('[data-checklist-comment]')?.value || '' }) }); const result = await response.json(); if (!response.ok || !result.ok) { throw new Error(result.error || 'Speichern fehlgeschlagen.'); } const trigger = contentRoot.querySelector('[data-market-drawer-open][aria-expanded=\"true\"]'); if (trigger) { await openMarketDrawer(trigger); if (checklistWasVisible) { setChecklistVisibility(getMarketDrawer()?.querySelector('[data-checklist-card]'), true); } } } catch (error) { if (status) { status.textContent = error instanceof Error ? error.message : 'Speichern fehlgeschlagen.'; } } });";
     echo "  const marketDrawerTitle = (payload) => { const marketName = payload.market?.name || 'Marktdurchführung'; const dates = (Array.isArray(payload.occurrence?.days) ? payload.occurrence.days : []).map((day) => marketDate(day.date)).filter(Boolean); return dates.length ? marketName + ', Marktdurchführung ' + dates.join(', ') : marketName; };";
     echo "  const openMarketDrawer = async (trigger) => { const drawer = getMarketDrawer(); if (!drawer) { return; } const title = drawer.querySelector('[data-market-drawer-title]'); const content = drawer.querySelector('[data-market-drawer-content]'); setMarketDrawerState(true); if (title) { title.textContent = 'Marktdurchführung'; } if (content) { content.innerHTML = '<p class=\"sg-body\">Marktdetails werden geladen …</p>'; } try { const response = await fetch('/api/market-occurrence.php?id=' + encodeURIComponent(trigger.dataset.marketOccurrenceId || ''), { credentials: 'same-origin' }); const payload = await response.json(); if (!response.ok || !payload.ok) { throw new Error(payload.error || 'Marktdetails konnten nicht geladen werden.'); } drawer.dataset.marketPayload = JSON.stringify(payload); if (title) { title.textContent = marketDrawerTitle(payload); } if (content) { content.innerHTML = renderMarketDetailWithActions(payload); applyMarketTabs(content); syncMarketDayAddButton(content); } } catch (error) { if (content) { content.innerHTML = '<p class=\"sg-body\">' + marketEscape(error.message) + '</p>'; } } contentRoot.querySelectorAll('[data-market-drawer-open]').forEach((button) => button.setAttribute('aria-expanded', String(button === trigger))); };";
     echo "  const openNewMarketDrawer = async () => { const drawer = getMarketDrawer(); if (!drawer) { return; } const title = drawer.querySelector('[data-market-drawer-title]'); const content = drawer.querySelector('[data-market-drawer-content]'); setMarketDrawerState(true); if (title) { title.textContent = 'Neue Marktdurchführung'; } if (content) { content.innerHTML = '<p class=\"sg-body\">Pflichtangaben werden geladen …</p>'; } try { const response = await fetch('/api/market-occurrence.php?action=create_options', { credentials: 'same-origin' }); const payload = await response.json(); if (!response.ok || !payload.ok) { throw new Error(payload.error || 'Pflichtangaben konnten nicht geladen werden.'); } if (content) { content.innerHTML = marketCreateForm(payload.market_definitions || []); } } catch (error) { if (content) { content.innerHTML = '<p class=\"sg-body\">' + marketEscape(error.message) + '</p>'; } } };";
diff --git a/public/assets/styles.portal.css b/public/assets/styles.portal.css
index c2cb395..b32896e 100644
--- a/public/assets/styles.portal.css
+++ b/public/assets/styles.portal.css
@@ -438,10 +438,6 @@ body.sg-lager-mobile-detail-open > :not([data-lager-mobile-detail-host]) {
   gap: var(--spacing-small);
 }
 
-.market-checklist-card--collapsed [data-shared-editable-card-read] {
-  display: none;
-}
-
 .market-checklist-item,
 .market-checklist-edit-item {
   display: flex;
diff --git a/public/scripts/shared-editable-action-card.js b/public/scripts/shared-editable-action-card.js
index 57428d1..58de8db 100644
--- a/public/scripts/shared-editable-action-card.js
+++ b/public/scripts/shared-editable-action-card.js
@@ -6,6 +6,35 @@
 
   const getCard = (element) => element.closest(cardSelector);
 
+  const setToggleEnabled = (card, enabled) => {
+    const toggle = card?.querySelector('[data-shared-editable-card-toggle]');
+    if (!toggle) {
+      return;
+    }
+    toggle.disabled = !enabled;
+    toggle.setAttribute('aria-disabled', String(!enabled));
+    toggle.classList.toggle('sg-button--inactive', !enabled);
+  };
+
+  const setVisibility = (card, visible) => {
+    if (!card || !card.hasAttribute('data-shared-editable-card-collapsible')) {
+      return;
+    }
+    const readView = card.querySelector('[data-shared-editable-card-read]');
+    const toggle = card.querySelector('[data-shared-editable-card-toggle]');
+    card.dataset.sharedEditableCardVisible = String(visible);
+    card.classList.toggle('shared-editable-action-card--collapsed', !visible);
+    if (readView && card.querySelector('[data-shared-editable-card-form]')?.hidden !== false) {
+      readView.hidden = !visible;
+    }
+    if (toggle) {
+      toggle.textContent = visible ? 'Verbergen' : 'Anzeigen';
+      toggle.setAttribute('aria-expanded', String(visible));
+    }
+  };
+
+  const isVisible = (card) => card?.dataset.sharedEditableCardVisible === 'true';
+
   const getScrollContainer = (element) => {
     let candidate = element?.parentElement || null;
 
@@ -66,6 +95,15 @@
     const editView = card.querySelector('[data-shared-editable-card-form]');
     const editButtons = card.querySelectorAll('[data-shared-editable-card-edit]');
 
+    if (card.hasAttribute('data-shared-editable-card-collapsible')) {
+      if (enabled) {
+        setVisibility(card, true);
+      } else if (!card.dataset.sharedEditableCardVisible) {
+        setVisibility(card, !card.hasAttribute('data-shared-editable-card-collapsed'));
+      }
+      setToggleEnabled(card, !enabled);
+    }
+
     if (readView) {
       readView.hidden = enabled;
     }
@@ -77,6 +115,10 @@
       editButton.setAttribute('aria-disabled', String(enabled));
       editButton.classList.toggle('sg-button--inactive', enabled);
     });
+
+    if (card.hasAttribute('data-shared-editable-card-collapsible') && enabled && readView) {
+      readView.hidden = true;
+    }
   };
 
   const resetDeleteConfirmation = (card) => {
@@ -140,6 +182,16 @@
     root.dataset.sharedEditableActionCardsInitialized = 'true';
     root.querySelectorAll(cardSelector).forEach((card) => setEditMode(card, false));
     root.addEventListener('click', (event) => {
+      const toggle = event.target.closest('[data-shared-editable-card-toggle]');
+      if (toggle && root.contains(toggle)) {
+        const card = getCard(toggle);
+        if (card?.querySelector('[data-shared-editable-card-form]')?.hidden === false) {
+          return;
+        }
+        setVisibility(card, !isVisible(card));
+        return;
+      }
+
       const edit = event.target.closest('[data-shared-editable-card-edit]');
       if (edit && root.contains(edit)) {
         const card = getCard(edit);
@@ -185,5 +237,5 @@
     });
   };
 
-  window.SharedEditableActionCard = { init, resetDeleteConfirmation, setEditMode };
+  window.SharedEditableActionCard = { init, resetDeleteConfirmation, setEditMode, setToggleEnabled, setVisibility, isVisible };
 }());