diff --git a/backend/media_lifecycle.py b/backend/media_lifecycle.py
index 570b4f4..e2d273a 100644
--- a/backend/media_lifecycle.py
+++ b/backend/media_lifecycle.py
@@ -27,20 +27,26 @@ HIDDEN_TO_PURGE_DAYS = max(1, int(os.getenv("MEDIA_TRASH_HIDDEN_TO_PURGE_DAYS",
 def assert_can_manage_media_asset_lifecycle(cur: Any, tenant: Any, asset: dict) -> None:
     """
     Papierkorb Stufe 2 / Recovery / Reaktivierung — nicht für trash_soft (siehe assert_can_trash_soft).
-    §5.2: official nur Plattform-Admin; club Vereinsorga; privat nur Uploader.
+    §5.2: official nur Superadmin; club Vereinsorga; privat nur Uploader (Plattform-Admin sonst wie bisher).
     """
     profile_id = tenant.profile_id
     role = (tenant.global_role or "").strip().lower()
+    vis = (asset.get("visibility") or "private").strip().lower()
+    if vis == "official":
+        if not is_superadmin(role):
+            raise HTTPException(
+                status_code=403,
+                detail="Offizielle Medien dürfen nur von Superadmins geändert oder gelöscht werden",
+            )
+        return
+
     if is_platform_admin(role):
         return
-    vis = (asset.get("visibility") or "private").strip().lower()
     uid = asset.get("uploaded_by_profile_id")
     if vis == "private":
         if uid is not None and int(uid) == int(profile_id):
             return
         raise HTTPException(status_code=403, detail="Keine Berechtigung für dieses Medium")
-    if vis == "official":
-        raise HTTPException(status_code=403, detail="Nur Plattform-Admin")
     if vis == "club":
         cid = asset.get("club_id")
         if cid is None:
@@ -54,15 +60,20 @@ def assert_can_manage_media_asset_lifecycle(cur: Any, tenant: Any, asset: dict)
 def assert_can_trash_soft(cur: Any, tenant: Any, asset: dict) -> None:
     """
     Aktiv → Papierkorb (Stufe 1). Trainer: nur eigene private Uploads.
-    Vereinsmedien: Vereinsorga; official: Plattform-Admin; Superadmin: immer.
+    Vereinsmedien: Vereinsorga; official: nur Superadmin; Plattform-Admin: sonst wie Verein/privat.
     """
     role_raw = tenant.global_role
     role = (role_raw or "").strip().lower()
     if is_superadmin(role):
         return
+    vis = (asset.get("visibility") or "private").strip().lower()
+    if vis == "official":
+        raise HTTPException(
+            status_code=403,
+            detail="Offizielle Medien dürfen nur von Superadmins in den Papierkorb gelegt werden",
+        )
     if is_platform_admin(role):
         return
-    vis = (asset.get("visibility") or "private").strip().lower()
     uid = asset.get("uploaded_by_profile_id")
     cid = asset.get("club_id")
     pid = int(tenant.profile_id)
@@ -80,8 +91,6 @@ def assert_can_trash_soft(cur: Any, tenant: Any, asset: dict) -> None:
             status_code=403,
             detail="Nur Vereinsorganisation darf Vereinsmedien in den Papierkorb legen",
         )
-    if vis == "official":
-        raise HTTPException(status_code=403, detail="Nur Plattform-Admin")
     raise HTTPException(status_code=403, detail="Keine Berechtigung für dieses Medium")
 
 
diff --git a/backend/routers/media_assets.py b/backend/routers/media_assets.py
index fae721d..7efd304 100644
--- a/backend/routers/media_assets.py
+++ b/backend/routers/media_assets.py
@@ -427,25 +427,25 @@ def _item_permissions(row: dict, tenant: TenantContext, admin_club_ids: set[int]
     is_owner = uid is not None and int(uid) == pid
     club_mgr = plat or (cid is not None and int(cid) in admin_club_ids)
 
-    edit_metadata = (
-        sup
-        or (vis == "official" and plat)
-        or (vis == "club" and club_mgr)
-        or (vis == "private" and is_owner)
-    )
-
-    trash_soft = lc == "active" and (
-        sup or plat or (vis == "private" and is_owner) or (vis == "club" and club_mgr)
-    )
-    if vis == "official" and not (sup or plat):
-        trash_soft = False
-
-    can_manage_adv = (
-        sup
-        or plat
-        or (vis == "private" and is_owner)
-        or (vis == "club" and club_mgr)
-    )
+    if vis == "official":
+        edit_metadata = sup
+        trash_soft = lc == "active" and sup
+        can_manage_adv = sup
+    else:
+        edit_metadata = (
+            sup
+            or (vis == "club" and club_mgr)
+            or (vis == "private" and is_owner)
+        )
+        trash_soft = lc == "active" and (
+            sup or plat or (vis == "private" and is_owner) or (vis == "club" and club_mgr)
+        )
+        can_manage_adv = (
+            sup
+            or plat
+            or (vis == "private" and is_owner)
+            or (vis == "club" and club_mgr)
+        )
 
     trash_hidden = lc in ("active", "trash_soft") and can_manage_adv
     recover_from_hidden = lc == "trash_hidden" and can_manage_adv
diff --git a/backend/version.py b/backend/version.py
index 95ead31..9b81e42 100644
--- a/backend/version.py
+++ b/backend/version.py
@@ -1,6 +1,6 @@
 # Shinkan Jinkendo Version Information
 
-APP_VERSION = "0.8.57"
+APP_VERSION = "0.8.58"
 BUILD_DATE = "2026-05-07"
 DB_SCHEMA_VERSION = "20260508049"
 
@@ -13,7 +13,7 @@ MODULE_VERSIONS = {
     "club_join_requests": "1.0.1",  # Depends(get_tenant_context)
     "admin_users": "1.0.0",  # GET /api/admin/users
     "platform_media_storage": "1.0.0",  # GET/PUT /api/admin/platform-media-storage (Superadmin-Pfad unter MEDIA_ROOT)
-    "media_assets": "1.12.0",  # Privat: Plattform-Admin muss club_id; private Ablage wie Verein (.u{pid} im Dateinamen)
+    "media_assets": "1.12.1",  # official: nur Superadmin Lifecycle/PATCH; UI Lesemodus; Superadmin Upload-Verein = aktiv
     "groups": "0.1.0",
     "skills": "0.1.0",
     "methods": "0.1.0",
@@ -29,6 +29,13 @@ MODULE_VERSIONS = {
 }
 
 CHANGELOG = [
+    {
+        "version": "0.8.58",
+        "date": "2026-05-07",
+        "changes": [
+            "Medienbibliothek offiziell: Ändern/Lifecycle nur Superadmin (nicht Plattform-Admin); Bearbeiten-Dialog für andere nur Lesemodus; Superadmin: Vereinsauswahl beim Archiv-Upload folgt aktiv/gesetzt effective_club_id",
+        ],
+    },
     {
         "version": "0.8.57",
         "date": "2026-05-07",
diff --git a/frontend/src/pages/MediaLibraryPage.jsx b/frontend/src/pages/MediaLibraryPage.jsx
index 6257be0..8c39e0a 100644
--- a/frontend/src/pages/MediaLibraryPage.jsx
+++ b/frontend/src/pages/MediaLibraryPage.jsx
@@ -240,18 +240,6 @@ export default function MediaLibraryPage() {
     [isSuperadmin],
   )
 
-  const modalVisibilityOptions = useMemo(() => {
-    if (!modalDraft) return archiveVisOptions
-    const o = [...archiveVisOptions]
-    if (!o.some((x) => x.value === modalDraft.visibility)) {
-      o.push({
-        value: modalDraft.visibility,
-        label: visibilityUiLabel(modalDraft.visibility),
-      })
-    }
-    return o
-  }, [archiveVisOptions, modalDraft])
-
   const [lifecycle, setLifecycle] = useState('active')
   const [q, setQ] = useState('')
   const [items, setItems] = useState([])
@@ -282,6 +270,25 @@ export default function MediaLibraryPage() {
   const mediaListFetchSeqRef = useRef(0)
   const gridTopAnchorRef = useRef(null)
 
+  const modalVisibilityOptions = useMemo(() => {
+    if (!modalDraft) return archiveVisOptions
+    const o = [...archiveVisOptions]
+    if (!o.some((x) => x.value === modalDraft.visibility)) {
+      o.push({
+        value: modalDraft.visibility,
+        label: visibilityUiLabel(modalDraft.visibility),
+      })
+    }
+    return o
+  }, [archiveVisOptions, modalDraft])
+
+  useEffect(() => {
+    if (!isSuperadmin) return
+    const cid = user?.effective_club_id ?? user?.active_club_id
+    if (cid == null || cid === '') return
+    setUploadClubId(String(cid))
+  }, [isSuperadmin, user?.effective_club_id, user?.active_club_id])
+
   const loadClubs = useCallback(async () => {
     try {
       const c = await api.listClubs()
@@ -1049,13 +1056,20 @@ export default function MediaLibraryPage() {
         <div className="media-library__overlay" role="dialog" aria-modal="true" aria-labelledby="edit-media-title">
           <div className="media-library__modal">
             <div className="media-library__modal-head">
-              <h2 id="edit-media-title">Medium #{modal.id}</h2>
+              <h2 id="edit-media-title">
+                Medium #{modal.id}
+                {(modal.visibility || '').toLowerCase() === 'official' && !isSuperadmin
+                  ? ' · Nur Lesen'
+                  : ''}
+              </h2>
               <button type="button" className="media-library__icon-btn" onClick={closeModal} aria-label="Schließen">
                 <X size={22} />
               </button>
             </div>
             <div className="media-library__modal-body">
-              {(viewer?.show_club_meta || viewer?.show_uploader_meta) && (
+              {(viewer?.show_club_meta ||
+                viewer?.show_uploader_meta ||
+                (modal.visibility || '').toLowerCase() === 'official') && (
                 <div className="media-library__meta-block">
                   {viewer?.show_club_meta ? (
                     <div>
@@ -1102,6 +1116,18 @@ export default function MediaLibraryPage() {
                     placeholder="z. B. Technik, Wurf"
                   />
                 </>
+              ) : (modal.visibility || '').toLowerCase() === 'official' ? (
+                <>
+                  <p className="media-library__hint">
+                    Offizielle Medien sind für alle sichtbar. Bearbeiten, Sichtbarkeit und Löschung nur als Superadmin.
+                  </p>
+                  <label className="form-label">Bezeichnung</label>
+                  <input className="form-input" readOnly value={modalDraft.display_name} />
+                  <label className="form-label">Copyright</label>
+                  <textarea className="form-input" readOnly rows={3} value={modalDraft.copyright_notice} />
+                  <label className="form-label">Schlagwörter</label>
+                  <input className="form-input" readOnly value={modalDraft.tags_input} />
+                </>
               ) : (
                 <p className="media-library__hint">Keine Berechtigung für Metadaten — nur Verwaltende dieser Stufe.</p>
               )}
@@ -1155,9 +1181,11 @@ export default function MediaLibraryPage() {
               </div>
 
               <div className="media-library__modal-actions">
-                <button type="button" className="btn btn-secondary" disabled={busy} onClick={saveModal}>
-                  Speichern
-                </button>
+                {modal.permissions?.edit_metadata ? (
+                  <button type="button" className="btn btn-secondary" disabled={busy} onClick={saveModal}>
+                    Speichern
+                  </button>
+                ) : null}
               </div>
 
               <div className="media-library__lc-block">