Feature: store barcode contents, list and search them (#14276)

* Feature: store barcode contents, list and search them

New setting PAPERLESS_CONSUMER_STORE_BARCODE_VALUES (off by default)
stores all barcodes found during consumption with the document: page,
type and content. They are listed on the metadata tab with a copy
button, returned by the documents API and searchable with barcodes:
in the advanced search. Versions keep their own barcodes, reprocessing
reads them again. Refs #9898

* Tests: cover the remaining barcode branches

Covers unchanged and failing barcode reads on reprocessing, unsupported files and DocumentBarcode.__str__, and uses toHaveLength in the barcode list spec as suggested by SonarCloud.

* Address review: keep barcodes when they can't be read, format choices

- Reprocessing and new versions keep the stored barcodes when the file
  can't be scanned or the scan fails, and replace them atomically.
- Format is a TextChoices of the zxing-cpp formats, with a test.
- Shared scan code, latest_version helper, TypedDict, serializer reuse.
- Barcodes in the split manifest, export/import tests, pytest-style tests.

* Barcode tests: TIFF reprocess, format check both ways, fixtures

- Reprocessing a TIFF with TIFF support off keeps the stored barcodes.
- The format test also fails when zxing-cpp drops a format.
- Fixtures in place of the sample dir mixin, plugin-level disabled test.
- Format labels aren't translated, OpenAPI enum named BarcodeFormatEnum.

* Review: module-level zxing reader, shorter barcode docs

- read_barcodes_zxing is a module-level function used by scan_pdf.
- Drop the trivial __str__ test, mark it no cover.
- Shorten the barcode docs and remove the duplicate in configuration.md.

* Fix header

* Use utility class

* Return barcodes from the metadata endpoint only

Drop the barcodes field and its prefetches from the document serializer,
as agreed in the review. Also remove the now empty component stylesheet.

---------

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src-ui/src/app/components/document-detail/document-barcodes/document-barcodes.component.ts

@@ -0,0 +1,38 @@
+import { Clipboard } from '@angular/cdk/clipboard'
+import { Component, inject, input, OnDestroy, signal } from '@angular/core'
+import { NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
+import { DocumentBarcode } from 'src/app/data/document-barcode'
+
+@Component({
+  selector: 'pngx-document-barcodes',
+  templateUrl: './document-barcodes.component.html',
+  imports: [NgxBootstrapIconsModule],
+})
+export class DocumentBarcodesComponent implements OnDestroy {
+  private readonly clipboard = inject(Clipboard)
+
+  readonly barcodes = input<DocumentBarcode[]>([])
+
+  readonly copiedIndex = signal<number>(null)
+  private copyTimeout: ReturnType<typeof setTimeout>
+
+  public isLink(value: string): boolean {
+    try {
+      const url = new URL(value.trim())
+      return ['http:', 'https:'].includes(url.protocol) && !!url.host
+    } catch {
+      return false
+    }
+  }
+
+  public copy(index: number) {
+    if (!this.clipboard.copy(this.barcodes()[index].value)) return
+    this.copiedIndex.set(index)
+    clearTimeout(this.copyTimeout)
+    this.copyTimeout = setTimeout(() => this.copiedIndex.set(null), 3000)
+  }
+
+  ngOnDestroy(): void {
+    clearTimeout(this.copyTimeout)
+  }
+}