Chore: Skip repeating Django system checks in the Docker consumer, scheduler and worker

The init-system-checks step already runs them once and all three services
depend on init-complete. Measured idle anon PSS saved on
Python 3.14: consumer 14 MiB, beat 26 MiB, worker 27 MiB.

docker/rootfs/etc/s6-overlay/s6-rc.d/svc-consumer/run

@@ -10,9 +10,11 @@ if [[ -n "${PAPERLESS_CONSUMER_DISABLE}" ]]; then
 else
 	cd ${PAPERLESS_SRC_DIR}
 
+	# Django system checks already ran once in init-system-checks, skip repeating them
+
 	if [[ -n "${USER_IS_NON_ROOT}" ]]; then
-		exec python3 manage.py document_consumer
+		exec python3 manage.py document_consumer --skip-checks
 	else
-		exec s6-setuidgid paperless python3 manage.py document_consumer
+		exec s6-setuidgid paperless python3 manage.py document_consumer --skip-checks
 	fi
 fi

docker/rootfs/etc/s6-overlay/s6-rc.d/svc-scheduler/run

@@ -3,8 +3,9 @@
 
 cd ${PAPERLESS_SRC_DIR}
 
+# Django system checks already ran once in init-system-checks, skip repeating them
 if [[ -n "${USER_IS_NON_ROOT}" ]]; then
-	exec /usr/local/bin/celery --app paperless beat --loglevel INFO
+	exec /usr/local/bin/celery --skip-checks --app paperless beat --loglevel INFO
 else
-	exec s6-setuidgid paperless /usr/local/bin/celery --app paperless beat --loglevel INFO
+	exec s6-setuidgid paperless /usr/local/bin/celery --skip-checks --app paperless beat --loglevel INFO
 fi

docker/rootfs/etc/s6-overlay/s6-rc.d/svc-worker/run

@@ -3,8 +3,9 @@
 
 cd ${PAPERLESS_SRC_DIR}
 
+# Django system checks already ran once in init-system-checks, skip repeating them
 if [[ -n "${USER_IS_NON_ROOT}" ]]; then
-	exec /usr/local/bin/celery --app paperless worker --loglevel INFO --without-mingle --without-gossip
+	exec /usr/local/bin/celery --skip-checks --app paperless worker --loglevel INFO --without-mingle --without-gossip
 else
-	exec s6-setuidgid paperless /usr/local/bin/celery --app paperless worker --loglevel INFO --without-mingle --without-gossip
+	exec s6-setuidgid paperless /usr/local/bin/celery --skip-checks --app paperless worker --loglevel INFO --without-mingle --without-gossip
 fi

src-ui/src/app/components/document-detail/document-detail.component.html

@@ -465,7 +465,7 @@
     @switch (archiveContentRenderType) {
       @case (ContentRenderType.PDF) {
         @if (!useNativePdfViewer) {
-          <div class="preview-sticky pdf-viewer-container">
+          <div class="preview-sticky pdf-viewer-container" tabindex="-1">
             <pngx-pdf-viewer
               [src]="pdfSource()"
               [sourceRevision]="previewRevision()"
@@ -477,7 +477,7 @@
               (loadError)="onError($event)"
               (afterLoadComplete)="pdfPreviewLoaded($event)">
             </pngx-pdf-viewer>
-            <div class="position-absolute bottom-0 start-50 translate-middle-x z-1 mb-3 d-flex gap-2 p-1 bg-body border rounded shadow">
+            <div class="preview-controls position-absolute bottom-0 start-50 translate-middle-x z-1 mb-3 d-flex gap-2 p-1 bg-body border rounded shadow">
               @if (previewNumPages()) {
                 <div class="input-group input-group-sm w-auto flex-nowrap">
                   <input class="form-control flex-grow-0 w-auto" type="number" min="1" [max]="previewNumPages()" [ngModelOptions]="{standalone: true}" [ngModel]="previewCurrentPage()" (ngModelChange)="previewCurrentPage.set($event)" aria-label="Page" i18n-aria-label />

src-ui/src/app/components/document-detail/document-detail.component.scss

@@ -12,6 +12,22 @@
     width: 100%;
     height: 100%;
   }
+
+  &:focus {
+    outline: none;
+  }
+
+  .preview-controls {
+    opacity: 0;
+    pointer-events: none;
+    transition: opacity 0.15s ease-in-out;
+  }
+
+  &:hover .preview-controls,
+  &:focus-within .preview-controls {
+    opacity: 1;
+    pointer-events: auto;
+  }
 }
 
 .btn-group .dropdown-toggle-split {