Auto translate strings

* Security: validate remote OCR endpoint against internal SSRF

Adds PAPERLESS_REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS (default true)
and validates remote_ocr_endpoint via validate_outbound_http_url
on the config serializer, matching the existing LLM endpoint handling.

* Validates te outbound url again right before use

* cover empty-value branch of validate_remote_ocr_endpoint because coverage

* re-validate remote OCR endpoint on every outbound request

.github/workflows/ci-backend.yml

@@ -63,7 +63,7 @@ jobs:
       - name: Detect changes
         id: filter
         if: steps.force.outputs.run_all != 'true'
-        uses: dorny/paths-filter@ceb8a2b8f2d89434be7ff52d3de7ec3738c5cc9d # v4.0.3
+        uses: dorny/paths-filter@7b450fff21473bca461d4b92ce414b9d0420d706 # v4.0.2
         with:
           base: ${{ steps.range.outputs.base }}
           ref: ${{ steps.range.outputs.ref }}
@@ -100,7 +100,7 @@ jobs:
         with:
           python-version: "${{ matrix.python-version }}"
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: true
@@ -178,7 +178,7 @@ jobs:
         with:
           python-version: "${{ env.DEFAULT_PYTHON }}"
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: true

.github/workflows/ci-docker.yml

@@ -106,9 +106,9 @@ jobs:
           echo "repository=${repo_name}"
           echo "name=${repo_name}" >> $GITHUB_OUTPUT
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -182,22 +182,22 @@ jobs:
           echo "Downloaded digests:"
           ls -la /tmp/digests/
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Login to Docker Hub
         if: needs.build-arch.outputs.push-external == 'true'
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Login to Quay.io
         if: needs.build-arch.outputs.push-external == 'true'
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: quay.io
           username: ${{ secrets.QUAY_USERNAME }}

.github/workflows/ci-docs.yml

@@ -50,7 +50,7 @@ jobs:
       - name: Detect changes
         id: filter
         if: steps.force.outputs.run_all != 'true'
-        uses: dorny/paths-filter@ceb8a2b8f2d89434be7ff52d3de7ec3738c5cc9d # v4.0.3
+        uses: dorny/paths-filter@7b450fff21473bca461d4b92ce414b9d0420d706 # v4.0.2
         with:
           base: ${{ steps.range.outputs.base }}
           ref: ${{ steps.range.outputs.ref }}
@@ -78,7 +78,7 @@ jobs:
         with:
           python-version: ${{ env.DEFAULT_PYTHON_VERSION }}
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: true

.github/workflows/ci-frontend.yml

@@ -60,7 +60,7 @@ jobs:
       - name: Detect changes
         id: filter
         if: steps.force.outputs.run_all != 'true'
-        uses: dorny/paths-filter@ceb8a2b8f2d89434be7ff52d3de7ec3738c5cc9d # v4.0.3
+        uses: dorny/paths-filter@7b450fff21473bca461d4b92ce414b9d0420d706 # v4.0.2
         with:
           base: ${{ steps.range.outputs.base }}
           ref: ${{ steps.range.outputs.ref }}
@@ -81,7 +81,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24
@@ -113,7 +113,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24
@@ -152,7 +152,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24
@@ -201,7 +201,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24
@@ -216,7 +216,7 @@ jobs:
         with:
           python-version: '3.12'
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: '0.12.x'
           enable-cache: false
@@ -255,7 +255,7 @@ jobs:
           fetch-depth: 2
           persist-credentials: false
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24

.github/workflows/ci-lint.yml

@@ -25,4 +25,4 @@ jobs:
         with:
           python-version: "3.14"
       - name: Run prek
-        uses: j178/prek-action@4e14d07f9231acabce116ccfca13b13dd9755ece # v3.0.0
+        uses: j178/prek-action@5337cb91e0fa35a7ff31b9ca345126d8bbbcdf16 # v2.0.6

.github/workflows/ci-release.yml

@@ -20,7 +20,7 @@ jobs:
       statuses: read
     steps:
       - name: Wait for Docker build
-        uses: lewagon/wait-on-check-action@369769072fe522a3a8a85c03c96af1e5242a1994 # v1.9.1
+        uses: lewagon/wait-on-check-action@2271c86c146b96545b4e871b855e10ffa6f50773 # v1.9.0
         with:
           ref: ${{ github.sha }}
           check-name: 'Merge and Push Manifest'
@@ -40,7 +40,7 @@ jobs:
           persist-credentials: false
       # ---- Frontend Build ----
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24
@@ -59,7 +59,7 @@ jobs:
         with:
           python-version: ${{ env.DEFAULT_PYTHON_VERSION }}
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: false
@@ -171,7 +171,7 @@ jobs:
           fi
       - name: Create release and changelog
         id: create-release
-        uses: release-drafter/release-drafter@34d80673e067bdc0c24568d3af899c216adcfaa9 # v7.7.0
+        uses: release-drafter/release-drafter@eada3c96a64734dd381cfbda23511034e328ddb0 # v7.6.0
         with:
           name: Paperless-ngx ${{ steps.get-version.outputs.version }}
           tag: ${{ steps.get-version.outputs.version }}
@@ -182,7 +182,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload release archive
-        uses: shogo82148/actions-upload-release-asset@aaba0f56bdbc1071f4af234d5cb16055e8a400de # v1.10.4
+        uses: shogo82148/actions-upload-release-asset@394b3c11c3cfc038b5396ad265c074065cf875c3 # v1.10.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           upload_url: ${{ steps.create-release.outputs.upload_url }}
@@ -212,7 +212,7 @@ jobs:
         with:
           python-version: ${{ env.DEFAULT_PYTHON_VERSION }}
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: false

.github/workflows/ci-static-analysis.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@3dc1ecc9bcb9e94e9b2c709687979e1298497054 # v0.6.2
+        uses: zizmorcore/zizmor-action@6fc4b006235f201fdab3722e17240ab420d580e5 # v0.6.1
   semgrep:
     name: Semgrep CE
     runs-on: ubuntu-24.04
@@ -44,7 +44,7 @@ jobs:
       - name: Run Semgrep
         run: semgrep scan --config auto --sarif-output results.sarif
       - name: Upload results to GitHub code scanning
-        uses: github/codeql-action/upload-sarif@db488ddef3bf6cb639b32c2e9a7c0a7ea8271d28 # v4.37.8
+        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3
         if: always()
         with:
           sarif_file: results.sarif

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
           persist-credentials: false
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@db488ddef3bf6cb639b32c2e9a7c0a7ea8271d28 # v4.37.8
+        uses: github/codeql-action/init@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3
         with:
           languages: ${{ matrix.language }}
           # If you wish to specify custom queries, you can do so here or in a config file.
@@ -47,4 +47,4 @@ jobs:
           # Prefix the list here with "+" to use these queries and those in the config file.
           # queries: ./path/to/local/query, your-org/your-repo/queries@main
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@db488ddef3bf6cb639b32c2e9a7c0a7ea8271d28 # v4.37.8
+        uses: github/codeql-action/analyze@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3

.github/workflows/crowdin.yml

@@ -22,7 +22,7 @@ jobs:
           token: ${{ secrets.PNGX_BOT_PAT }}
           persist-credentials: false
       - name: crowdin action
-        uses: crowdin/github-action@8f01d54f70f1713ee3f09d82c2bbb2daeac28689 # v2.17.1
+        uses: crowdin/github-action@c7af9bc98b01694653031fef2a0dc6c7888ce9bc # v2.17.0
         with:
           upload_translations: false
           download_translations: true

.github/workflows/project-actions.yml

@@ -19,6 +19,6 @@ jobs:
     if: github.event_name == 'pull_request_target' && (github.event.action == 'opened' || github.event.action == 'reopened') && github.event.pull_request.user.login != 'dependabot'
     steps:
       - name: Label PR with release-drafter
-        uses: release-drafter/release-drafter@34d80673e067bdc0c24568d3af899c216adcfaa9 # v7.7.0
+        uses: release-drafter/release-drafter@eada3c96a64734dd381cfbda23511034e328ddb0 # v7.6.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/repo-maintenance.yml

@@ -14,7 +14,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@4391f3da665fdf50b6810c1a66712fb9ba21aa93 # v11.0.0
+      - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0
         with:
           days-before-stale: 7
           days-before-close: 14

.github/workflows/translate-strings.yml

@@ -29,7 +29,7 @@ jobs:
           sudo apt-get update -qq
           sudo apt-get install -qq --no-install-recommends gettext
       - name: Install uv
-        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           version: ${{ env.DEFAULT_UV_VERSION }}
           enable-cache: true
@@ -43,7 +43,7 @@ jobs:
           PAPERLESS_SECRET_KEY: "ci-translate-not-a-real-secret"
         run: cd src/ && uv run manage.py makemessages -l en_US -i "samples*"
       - name: Install pnpm
-        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
         with:
           package_json_file: src-ui/package.json
       - name: Use Node.js 24

docs/configuration.md

@@ -2088,6 +2088,12 @@ password. All of these options come from their similarly-named [Django settings]
 
     Defaults to "always".
 
+#### [`PAPERLESS_REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS=<bool>`](#PAPERLESS_REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS) {#PAPERLESS_REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS}
+
+: If set to false, Paperless blocks remote OCR endpoint URLs that resolve to non-public addresses (e.g., localhost, etc).
+
+    Defaults to True.
+
 ## AI {#ai}
 
 #### [`PAPERLESS_AI_ENABLED=<bool>`](#PAPERLESS_AI_ENABLED) {#PAPERLESS_AI_ENABLED}

src-ui/src/app/components/admin/trash/trash.component.ts

@@ -41,6 +41,8 @@ export class TrashComponent
   private modalService = inject(NgbModal)
   private settingsService = inject(SettingsService)
   private router = inject(Router)
+  private readonly emptyTrashDelaySetting =
+    this.settingsService.getSignal<number>(SETTINGS_KEYS.EMPTY_TRASH_DELAY)
 
   readonly documentsInTrash = signal<Document[]>([])
   readonly selectedDocuments = signal<Set<number>>(new Set())
@@ -200,8 +202,7 @@ export class TrashComponent
   }
 
   getDaysRemaining(document: Document): number {
-    this.settingsService.trackChanges()
+    const delay = this.emptyTrashDelaySetting()
-    const delay = this.settingsService.get(SETTINGS_KEYS.EMPTY_TRASH_DELAY)
     const diff = new Date().getTime() - new Date(document.deleted_at).getTime()
     const days = Math.ceil(diff / (1000 * 3600 * 24))
     return delay - days

src-ui/src/app/components/app-frame/app-frame.component.spec.ts

@@ -193,6 +193,23 @@ describe('AppFrameComponent', () => {
     expect(savedViewSpy).toHaveBeenCalled()
   })
 
+  it('should update reinitialized signal-backed settings without manual change detection', async () => {
+    settingsService.initializeSettings().subscribe()
+    httpTestingController
+      .expectOne(`${environment.apiBaseUrl}ui_settings/`)
+      .flush({
+        settings: { app_title: 'Reactive title' },
+        user: {},
+        permissions: [],
+      })
+
+    await fixture.whenStable()
+
+    expect(
+      fixture.nativeElement.querySelector('.brand-title').textContent
+    ).toBe('Reactive title')
+  })
+
   it('should check for update if enabled', () => {
     const updateCheckSpy = jest.spyOn(remoteVersionService, 'checkForUpdates')
     updateCheckSpy.mockImplementation(() => {

src-ui/src/app/components/app-frame/app-frame.component.ts

@@ -98,6 +98,29 @@ export class AppFrameComponent
   readonly isMenuCollapsed = signal(true)
   readonly slimSidebarAnimating = signal(false)
   readonly mobileSearchHidden = signal(false)
+  private readonly versionSetting = this.settingsService.getSignal<string>(
+    SETTINGS_KEYS.VERSION
+  )
+  private readonly appTitleSetting = this.settingsService.getSignal<string>(
+    SETTINGS_KEYS.APP_TITLE
+  )
+  private readonly appLogoSetting = this.settingsService.getSignal<string>(
+    SETTINGS_KEYS.APP_LOGO
+  )
+  private readonly slimSidebarSetting = this.settingsService.getSignal<boolean>(
+    SETTINGS_KEYS.SLIM_SIDEBAR
+  )
+  private readonly attributesSectionsCollapsedSetting =
+    this.settingsService.getSignal<CollapsibleSection[]>(
+      SETTINGS_KEYS.ATTRIBUTES_SECTIONS_COLLAPSED
+    )
+  private readonly aiEnabledSetting = this.settingsService.getSignal<boolean>(
+    SETTINGS_KEYS.AI_ENABLED
+  )
+  private readonly sidebarViewsShowCountSetting =
+    this.settingsService.getSignal<boolean>(
+      SETTINGS_KEYS.SIDEBAR_VIEWS_SHOW_COUNT
+    )
   private lastScrollY: number = 0
 
   constructor() {
@@ -191,33 +214,23 @@ export class AppFrameComponent
   }
 
   get versionString(): string {
-    this.settingsService.trackChanges()
+    return `${environment.appTitle} v${this.versionSetting()}${environment.tag === 'prod' ? '' : ` #${environment.tag}`}`
-    return `${environment.appTitle} v${this.settingsService.get(SETTINGS_KEYS.VERSION)}${environment.tag === 'prod' ? '' : ` #${environment.tag}`}`
   }
 
   get appTitle(): string {
-    this.settingsService.trackChanges()
+    return this.appTitleSetting() || environment.appTitle
-    return (
-      this.settingsService.get(SETTINGS_KEYS.APP_TITLE) || environment.appTitle
-    )
   }
 
   get customAppTitle(): string {
-    this.settingsService.trackChanges()
+    return this.appTitleSetting()
-    return this.settingsService.get(SETTINGS_KEYS.APP_TITLE)
   }
 
   get hasCustomBranding(): boolean {
-    this.settingsService.trackChanges()
+    return !!(this.appTitleSetting()?.length || this.appLogoSetting()?.length)
-    return !!(
-      this.settingsService.get(SETTINGS_KEYS.APP_TITLE)?.length ||
-      this.settingsService.get(SETTINGS_KEYS.APP_LOGO)?.length
-    )
   }
 
   get customAppLogo(): string {
-    this.settingsService.trackChanges()
+    const logo = this.appLogoSetting()
-    const logo = this.settingsService.get(SETTINGS_KEYS.APP_LOGO)
     return logo?.length
       ? environment.apiBaseUrl.replace(/\/api\/$/, logo)
       : null
@@ -262,8 +275,7 @@ export class AppFrameComponent
   }
 
   get slimSidebarEnabled(): boolean {
-    this.settingsService.trackChanges()
+    return this.slimSidebarSetting()
-    return this.settingsService.get(SETTINGS_KEYS.SLIM_SIDEBAR)
   }
 
   set slimSidebarEnabled(enabled: boolean) {
@@ -286,10 +298,9 @@ export class AppFrameComponent
   }
 
   get attributesSectionsCollapsed(): boolean {
-    this.settingsService.trackChanges()
+    return this.attributesSectionsCollapsedSetting()?.includes(
-    return this.settingsService
+      CollapsibleSection.ATTRIBUTES
-      .get(SETTINGS_KEYS.ATTRIBUTES_SECTIONS_COLLAPSED)
+    )
-      ?.includes(CollapsibleSection.ATTRIBUTES)
   }
 
   set attributesSectionsCollapsed(collapsed: boolean) {
@@ -312,8 +323,7 @@ export class AppFrameComponent
   }
 
   get aiEnabled(): boolean {
-    this.settingsService.trackChanges()
+    return this.aiEnabledSetting()
-    return this.settingsService.get(SETTINGS_KEYS.AI_ENABLED)
   }
 
   @HostListener('window:resize')
@@ -480,9 +490,8 @@ export class AppFrameComponent
   }
 
   get showSidebarCounts(): boolean {
-    this.settingsService.trackChanges()
     return (
-      this.settingsService.get(SETTINGS_KEYS.SIDEBAR_VIEWS_SHOW_COUNT) &&
+      this.sidebarViewsShowCountSetting() &&
       !this.settingsService.organizingSidebarSavedViews()
     )
   }

src-ui/src/app/components/app-frame/global-search/global-search.component.ts

@@ -81,6 +81,10 @@ export class GlobalSearchComponent implements OnInit {
   private hotkeyService = inject(HotKeyService)
   private settingsService = inject(SettingsService)
   private locationStrategy = inject(LocationStrategy)
+  private readonly searchFullTypeSetting =
+    this.settingsService.getSignal<GlobalSearchType>(
+      SETTINGS_KEYS.SEARCH_FULL_TYPE
+    )
 
   public DataType = DataType
   readonly query = signal<string>(null)
@@ -97,11 +101,7 @@ export class GlobalSearchComponent implements OnInit {
   @ViewChildren('secondaryButton') secondaryButtons: QueryList<ElementRef>
 
   get useAdvancedForFullSearch(): boolean {
-    this.settingsService.trackChanges()
+    return this.searchFullTypeSetting() === GlobalSearchType.ADVANCED
-    return (
-      this.settingsService.get(SETTINGS_KEYS.SEARCH_FULL_TYPE) ===
-      GlobalSearchType.ADVANCED
-    )
   }
 
   constructor() {

src-ui/src/app/components/common/edit-dialog/workflow-edit-dialog/workflow-edit-dialog.component.spec.ts

@@ -196,6 +196,16 @@ describe('WorkflowEditDialogComponent', () => {
     fixture.detectChanges()
   })
 
+  function setActionSettings({
+    email = true,
+    remoteOcr = true,
+    ai = true,
+  } = {}) {
+    settingsService.set(SETTINGS_KEYS.EMAIL_ENABLED, email)
+    settingsService.set(SETTINGS_KEYS.REMOTE_OCR_CONFIGURED, remoteOcr)
+    settingsService.set(SETTINGS_KEYS.AI_ENABLED, ai)
+  }
+
   it('should support create and edit modes, support adding triggers and actions on new workflow', () => {
     component.dialogMode.set(EditDialogMode.CREATE)
     const createTitleSpy = jest.spyOn(component, 'getCreateTitle')
@@ -218,7 +228,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should return source options, type options, type name, schedule date field options', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
     component.ngOnInit()
     expect(component.sourceOptions).toEqual(DOCUMENT_SOURCE_OPTIONS)
     expect(component.triggerTypeOptions).toEqual(WORKFLOW_TYPE_OPTIONS)
@@ -242,7 +252,7 @@ describe('WorkflowEditDialogComponent', () => {
     )
 
     // Email, remote OCR and AI all disabled
-    jest.spyOn(settingsService, 'get').mockReturnValue(false)
+    setActionSettings({ email: false, remoteOcr: false, ai: false })
     component.ngOnInit()
     expect(component.actionTypeOptions).toEqual(
       WORKFLOW_ACTION_OPTIONS.filter(
@@ -255,7 +265,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should offer remote OCR only for consumption workflows', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
 
     // A consumption trigger makes the action reachable
     component.object = {
@@ -285,7 +295,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should offer remote OCR on a trigger added to a new workflow', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
     component.ngOnInit()
 
     // Nothing for the action to apply to yet
@@ -311,7 +321,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should keep remote OCR listed when an action already uses it', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
 
     // Otherwise changing the trigger would silently blank the selection
     component.object = {
@@ -329,9 +339,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should not offer remote OCR when no engine is configured', () => {
-    jest
+    setActionSettings({ remoteOcr: false })
-      .spyOn(settingsService, 'get')
-      .mockImplementation((key) => key !== SETTINGS_KEYS.REMOTE_OCR_CONFIGURED)
 
     component.object = {
       name: 'Workflow 1',
@@ -348,7 +356,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should offer apply AI suggestions unless every trigger is consumption', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
 
     // Consumption runs before the document has been parsed, so there would be
     // no content to make suggestions from
@@ -382,7 +390,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should keep apply AI suggestions listed when an action already uses it', () => {
-    jest.spyOn(settingsService, 'get').mockReturnValue(true)
+    setActionSettings()
 
     // Otherwise changing the trigger would silently blank the selection
     component.object = {
@@ -400,9 +408,7 @@ describe('WorkflowEditDialogComponent', () => {
   })
 
   it('should not offer apply AI suggestions when AI is disabled', () => {
-    jest
+    setActionSettings({ ai: false })
-      .spyOn(settingsService, 'get')
-      .mockImplementation((key) => key !== SETTINGS_KEYS.AI_ENABLED)
 
     component.object = {
       name: 'Workflow 1',

src-ui/src/app/components/common/edit-dialog/workflow-edit-dialog/workflow-edit-dialog.component.ts

@@ -537,6 +537,13 @@ export class WorkflowEditDialogComponent
   readonly dateCustomFields = computed(() =>
     this.customFields()?.filter((f) => f.data_type === CustomFieldDataType.Date)
   )
+  private readonly emailEnabledSetting =
+    this.settingsService.getSignal<boolean>(SETTINGS_KEYS.EMAIL_ENABLED)
+  private readonly remoteOcrConfiguredSetting =
+    this.settingsService.getSignal<boolean>(SETTINGS_KEYS.REMOTE_OCR_CONFIGURED)
+  private readonly aiEnabledSetting = this.settingsService.getSignal<boolean>(
+    SETTINGS_KEYS.AI_ENABLED
+  )
 
   expandedItem: number = null
 
@@ -589,7 +596,7 @@ export class WorkflowEditDialogComponent
   private getAllowedActionTypes() {
     let allowed = WORKFLOW_ACTION_OPTIONS
 
-    if (!this.settingsService.get(SETTINGS_KEYS.EMAIL_ENABLED)) {
+    if (!this.emailEnabledSetting()) {
       allowed = allowed.filter((a) => a.id !== WorkflowActionType.Email)
     }
 
@@ -597,7 +604,7 @@ export class WorkflowEditDialogComponent
     // offered for workflows that run at consumption.
     const formWorkflow: Workflow = this.objectForm?.value
     const remoteOcrUsable =
-      this.settingsService.get(SETTINGS_KEYS.REMOTE_OCR_CONFIGURED) &&
+      this.remoteOcrConfiguredSetting() &&
       (formWorkflow?.triggers?.some(
         (trigger) => trigger.type === WorkflowTriggerType.Consumption
       ) ||
@@ -612,7 +619,7 @@ export class WorkflowEditDialogComponent
     // once every trigger is consumption, so it stays offered on a workflow
     // that has no triggers yet.
     const aiSuggestionsUsable =
-      this.settingsService.get(SETTINGS_KEYS.AI_ENABLED) &&
+      this.aiEnabledSetting() &&
       (!formWorkflow?.triggers?.length ||
         formWorkflow.triggers.some(
           (trigger) => trigger.type !== WorkflowTriggerType.Consumption
@@ -1362,7 +1369,6 @@ export class WorkflowEditDialogComponent
   }
 
   get actionTypeOptions() {
-    this.settingsService.trackChanges()
     // Computed on read rather than cached
     return this.getAllowedActionTypes()
   }

src-ui/src/app/components/common/filterable-dropdown/filterable-dropdown.component.spec.ts

@@ -839,7 +839,9 @@ describe('FilterableDropdownComponent & FilterableDropdownSelectionModel', () =>
     selectionModel.items = [memoRoot]
     selectionModel.documentCounts = [{ id: memoRoot.id, document_count: 9 }]
 
-    const getRootDocCount = (selectionModel as any).createRootDocCounter()
+    const getRootDocCount = (selectionModel as any).createRootDocCounter(
+      selectionModel.items
+    )
 
     expect(getRootDocCount(memoRoot.id)).toEqual(9)
     selectionModel.documentCounts = []
@@ -855,7 +857,9 @@ describe('FilterableDropdownComponent & FilterableDropdownSelectionModel', () =>
     selectionModel.items = [rootWithoutSelection]
     selectionModel.documentCounts = []
 
-    const getRootDocCount = (selectionModel as any).createRootDocCounter()
+    const getRootDocCount = (selectionModel as any).createRootDocCounter(
+      selectionModel.items
+    )
 
     expect(getRootDocCount(rootWithoutSelection.id)).toEqual(4)
   })
@@ -865,7 +869,9 @@ describe('FilterableDropdownComponent & FilterableDropdownSelectionModel', () =>
     selectionModel.items = [rootWithoutCounts]
     selectionModel.documentCounts = []
 
-    const getRootDocCount = (selectionModel as any).createRootDocCounter()
+    const getRootDocCount = (selectionModel as any).createRootDocCounter(
+      selectionModel.items
+    )
 
     expect(getRootDocCount(rootWithoutCounts.id)).toEqual(0)
   })
@@ -966,7 +972,7 @@ describe('FilterableDropdownComponent & FilterableDropdownSelectionModel', () =>
     component.selectionModel['temporarySelectionStates'].set(id, state)
     const changedSpy = jest.spyOn(component.selectionModel.changed, 'next')
     component.selectionModel.exclude(id)
-    expect(component.selectionModel.temporaryLogicalOperator).toBe(
+    expect(component.selectionModel.temporaryLogicalOperator()).toBe(
       LogicalOperator.And
     )
     expect(component.selectionModel['temporarySelectionStates'].get(id)).toBe(

src-ui/src/app/components/common/filterable-dropdown/filterable-dropdown.component.ts

@@ -64,43 +64,56 @@ export class FilterableDropdownSelectionModel {
 
   manyToOne = false
   singleSelect = false
-  private _logicalOperator: LogicalOperator = LogicalOperator.And
-  temporaryLogicalOperator: LogicalOperator = this._logicalOperator
-  private _intersection: Intersection = Intersection.Include
-  temporaryIntersection: Intersection = this._intersection
 
-  private _documentCounts: SelectionDataItem[] = []
+  private readonly _logicalOperator = signal(LogicalOperator.And)
+  readonly temporaryLogicalOperator = signal(LogicalOperator.And)
+  private readonly _intersection = signal(Intersection.Include)
+  readonly temporaryIntersection = signal(Intersection.Include)
+  private readonly _documentCounts = signal<SelectionDataItem[]>([])
+  private readonly _items = signal<MatchingModel[]>([])
+  private readonly _selectionStates = signal(
+    new Map<number, ToggleableItemState>()
+  )
+  private readonly _temporarySelectionStates = signal(
+    new Map<number, ToggleableItemState>()
+  )
+
   public documentCountSortingEnabled = false
 
+  private get selectionStates(): ReadonlyMap<number, ToggleableItemState> {
+    return this._selectionStates()
+  }
+
+  private get temporarySelectionStates(): ReadonlyMap<
+    number,
+    ToggleableItemState
+  > {
+    return this._temporarySelectionStates()
+  }
+
   public set documentCounts(counts: SelectionDataItem[]) {
-    this._documentCounts = counts
+    this._documentCounts.set(counts)
     if (this.documentCountSortingEnabled) {
-      this.sortItems()
+      this._items.set(this.sortItems(this.items))
     }
   }
 
-  private _items: MatchingModel[] = []
   get items(): MatchingModel[] {
-    return this._items
+    return this._items()
   }
 
   set items(items: MatchingModel[]) {
     if (items) {
-      this._items = Array.from(items)
+      this._items.set(this.withNullItem(this.sortItems(Array.from(items))))
-      this.sortItems()
-      this.setNullItem()
     }
   }
 
-  private setNullItem() {
+  private withNullItem(items: MatchingModel[]): MatchingModel[] {
     if (this.manyToOne && this.logicalOperator === LogicalOperator.Or) {
-      if (this._items[0]?.id === null) {
+      return items[0]?.id === null ? items.slice(1) : items
-        this._items.shift()
-      }
-      return
     }
 
-    const item = {
+    const nullItem = {
       name: $localize`:Filter drop down element to filter for documents with no correspondent/type/tag assigned:Not assigned`,
       id:
         this.manyToOne || this.intersection === Intersection.Include
@@ -108,22 +121,17 @@ export class FilterableDropdownSelectionModel {
           : NEGATIVE_NULL_FILTER_VALUE,
     }
 
-    if (
+    return items[0]?.id === null || items[0]?.id === NEGATIVE_NULL_FILTER_VALUE
-      this._items[0]?.id === null ||
+      ? [nullItem, ...items.slice(1)]
-      this._items[0]?.id === NEGATIVE_NULL_FILTER_VALUE
+      : [nullItem, ...items]
-    ) {
-      this._items[0] = item
-    } else if (this._items) {
-      this._items.unshift(item)
-    }
   }
 
   constructor(manyToOne: boolean = false) {
     this.manyToOne = manyToOne
   }
 
-  private sortItems() {
+  private sortItems(items: MatchingModel[]): MatchingModel[] {
-    this._items.sort((a, b) => {
+    const sorted = [...items].sort((a, b) => {
       if (
         (a.id == null && b.id != null) ||
         (a.id == NEGATIVE_NULL_FILTER_VALUE &&
@@ -154,13 +162,13 @@ export class FilterableDropdownSelectionModel {
       ) {
         return -1
       } else if (
-        this._documentCounts.length &&
+        this._documentCounts().length &&
         this.getDocumentCount(b.id) === 0 &&
         this.getDocumentCount(a.id) > this.getDocumentCount(b.id)
       ) {
         return -1
       } else if (
-        this._documentCounts.length &&
+        this._documentCounts().length &&
         this.getDocumentCount(a.id) === 0 &&
         this.getDocumentCount(a.id) < this.getDocumentCount(b.id)
       ) {
@@ -170,15 +178,11 @@ export class FilterableDropdownSelectionModel {
       }
     })
 
-    if (this._documentCounts.length) {
+    return this._documentCounts().length
-      this.promoteBranchesWithDocumentCounts()
+      ? this.promoteBranchesWithDocumentCounts(sorted)
-    }
+      : sorted
   }
 
-  private selectionStates = new Map<number, ToggleableItemState>()
-
-  private temporarySelectionStates = new Map<number, ToggleableItemState>()
-
   getSelectedItems() {
     return this.items.filter(
       (i) =>
@@ -194,30 +198,33 @@ export class FilterableDropdownSelectionModel {
   }
 
   set(id: number, state: ToggleableItemState, fireEvent = true) {
+    const states = new Map(this.temporarySelectionStates)
     if (state == ToggleableItemState.NotSelected) {
-      this.temporarySelectionStates.delete(id)
+      states.delete(id)
     } else {
-      this.temporarySelectionStates.set(id, state)
+      states.set(id, state)
     }
+    this._temporarySelectionStates.set(states)
     if (fireEvent) {
       this.changed.next(this)
     }
   }
 
   toggle(id: number, fireEvent = true) {
-    let state = this.temporarySelectionStates.get(id)
+    const states = new Map(this.temporarySelectionStates)
+    let state = states.get(id)
     if (
       state == undefined ||
       (state != ToggleableItemState.Selected &&
         state != ToggleableItemState.Excluded)
     ) {
       if (this.manyToOne || this.singleSelect) {
-        this.temporarySelectionStates.set(id, ToggleableItemState.Selected)
+        states.set(id, ToggleableItemState.Selected)
 
         if (this.singleSelect) {
-          for (let key of this.temporarySelectionStates.keys()) {
+          for (let key of states.keys()) {
             if (key != id) {
-              this.temporarySelectionStates.delete(key)
+              states.delete(key)
             }
           }
         }
@@ -233,25 +240,26 @@ export class FilterableDropdownSelectionModel {
         ) {
           newState = ToggleableItemState.NotSelected
         }
-        this.temporarySelectionStates.set(id, newState)
+        states.set(id, newState)
       }
     } else if (
       state == ToggleableItemState.Selected ||
       state == ToggleableItemState.Excluded
     ) {
-      this.temporarySelectionStates.delete(id)
+      states.delete(id)
-      this.clearDescendantSelections(id)
+      this.clearDescendantSelections(states, id)
     }
 
     if (!id) {
-      for (let key of this.temporarySelectionStates.keys()) {
+      for (let key of states.keys()) {
         if (key) {
-          this.temporarySelectionStates.delete(key)
+          states.delete(key)
         }
       }
     } else {
-      this.temporarySelectionStates.delete(null)
+      states.delete(null)
     }
+    this._temporarySelectionStates.set(states)
 
     if (fireEvent) {
       this.changed.next(this)
@@ -259,20 +267,21 @@ export class FilterableDropdownSelectionModel {
   }
 
   exclude(id: number, fireEvent: boolean = true) {
-    let state = this.temporarySelectionStates.get(id)
+    const states = new Map(this.temporarySelectionStates)
+    let state = states.get(id)
     if (id && (state == null || state != ToggleableItemState.Excluded)) {
-      this.temporaryLogicalOperator = this._logicalOperator = this.manyToOne
+      const operator = this.manyToOne ? LogicalOperator.And : LogicalOperator.Or
-        ? LogicalOperator.And
+      this.temporaryLogicalOperator.set(operator)
-        : LogicalOperator.Or
+      this._logicalOperator.set(operator)
 
       if (this.manyToOne || this.singleSelect) {
-        this.temporarySelectionStates.set(id, ToggleableItemState.Excluded)
+        states.set(id, ToggleableItemState.Excluded)
-        this.clearDescendantSelections(id)
+        this.clearDescendantSelections(states, id)
 
         if (this.singleSelect) {
-          for (let key of this.temporarySelectionStates.keys()) {
+          for (let key of states.keys()) {
             if (key != id) {
-              this.temporarySelectionStates.delete(key)
+              states.delete(key)
             }
           }
         }
@@ -287,17 +296,18 @@ export class FilterableDropdownSelectionModel {
         ) {
           newState = ToggleableItemState.NotSelected
         }
-        this.temporarySelectionStates.set(id, newState)
+        states.set(id, newState)
         if (newState == ToggleableItemState.Excluded) {
-          this.clearDescendantSelections(id)
+          this.clearDescendantSelections(states, id)
         }
       }
     } else if (!id || state == ToggleableItemState.Excluded) {
-      this.temporarySelectionStates.delete(id)
+      states.delete(id)
       if (id) {
-        this.clearDescendantSelections(id)
+        this.clearDescendantSelections(states, id)
       }
     }
+    this._temporarySelectionStates.set(states)
 
     if (fireEvent) {
       this.changed.next(this)
@@ -308,9 +318,12 @@ export class FilterableDropdownSelectionModel {
     return this.selectionStates.get(id) || ToggleableItemState.NotSelected
   }
 
-  private clearDescendantSelections(id: number) {
+  private clearDescendantSelections(
+    states: Map<number, ToggleableItemState>,
+    id: number
+  ) {
     for (const descendantID of this.getDescendantIDs(id)) {
-      this.temporarySelectionStates.delete(descendantID)
+      states.delete(descendantID)
     }
   }
 
@@ -320,7 +333,7 @@ export class FilterableDropdownSelectionModel {
 
     while (queue.length) {
       const parentID = queue.shift()
-      for (const item of this._items) {
+      for (const item of this.items) {
         if (
           typeof item?.id === 'number' &&
           typeof (item as any)['parent'] === 'number' &&
@@ -336,12 +349,12 @@ export class FilterableDropdownSelectionModel {
   }
 
   get logicalOperator(): LogicalOperator {
-    return this.temporaryLogicalOperator
+    return this.temporaryLogicalOperator()
   }
 
   set logicalOperator(operator: LogicalOperator) {
-    this.temporaryLogicalOperator = operator
+    this.temporaryLogicalOperator.set(operator)
-    this.setNullItem()
+    this._items.set(this.withNullItem(this.items))
   }
 
   toggleOperator() {
@@ -349,12 +362,12 @@ export class FilterableDropdownSelectionModel {
   }
 
   get intersection(): Intersection {
-    return this.temporaryIntersection
+    return this.temporaryIntersection()
   }
 
   set intersection(intersection: Intersection) {
-    this.temporaryIntersection = intersection
+    this.temporaryIntersection.set(intersection)
-    this.setNullItem()
+    this._items.set(this.withNullItem(this.items))
   }
 
   toggleIntersection() {
@@ -364,18 +377,20 @@ export class FilterableDropdownSelectionModel {
         ? ToggleableItemState.Selected
         : ToggleableItemState.Excluded
 
-    this.temporarySelectionStates.forEach((state, key) => {
+    const states = new Map(this.temporarySelectionStates)
+    states.forEach((state, key) => {
       if (key === null && this.intersection === Intersection.Exclude) {
-        this.temporarySelectionStates.set(NEGATIVE_NULL_FILTER_VALUE, newState)
+        states.set(NEGATIVE_NULL_FILTER_VALUE, newState)
       } else if (
         key === NEGATIVE_NULL_FILTER_VALUE &&
         this.intersection === Intersection.Include
       ) {
-        this.temporarySelectionStates.set(null, newState)
+        states.set(null, newState)
       } else {
-        this.temporarySelectionStates.set(key, newState)
+        states.set(key, newState)
       }
     })
+    this._temporarySelectionStates.set(states)
 
     this.changed.next(this)
   }
@@ -395,10 +410,12 @@ export class FilterableDropdownSelectionModel {
   }
 
   clear(fireEvent = true) {
-    this.temporarySelectionStates.clear()
+    this._temporarySelectionStates.set(new Map())
-    this.temporaryLogicalOperator = this._logicalOperator = LogicalOperator.And
+    this.temporaryLogicalOperator.set(LogicalOperator.And)
-    this.temporaryIntersection = this._intersection = Intersection.Include
+    this._logicalOperator.set(LogicalOperator.And)
-    this.setNullItem()
+    this.temporaryIntersection.set(Intersection.Include)
+    this._intersection.set(Intersection.Include)
+    this._items.set(this.withNullItem(this.items))
     if (fireEvent) {
       this.changed.next(this)
     }
@@ -419,9 +436,9 @@ export class FilterableDropdownSelectionModel {
       )
     ) {
       return true
-    } else if (this.temporaryLogicalOperator !== this._logicalOperator) {
+    } else if (this.temporaryLogicalOperator() !== this._logicalOperator()) {
       return true
-    } else if (this.temporaryIntersection !== this._intersection) {
+    } else if (this.temporaryIntersection() !== this._intersection()) {
       return true
     } else {
       return false
@@ -438,23 +455,29 @@ export class FilterableDropdownSelectionModel {
   }
 
   getDocumentCount(id: number) {
-    return this._documentCounts.find((c) => c.id === id)?.document_count
+    return this._documentCounts().find((c) => c.id === id)?.document_count
   }
 
-  private promoteBranchesWithDocumentCounts() {
+  private promoteBranchesWithDocumentCounts(
-    const parentById = this.buildParentById()
+    items: MatchingModel[]
+  ): MatchingModel[] {
+    const parentById = this.buildParentById(items)
     const findRootId = this.createRootFinder(parentById)
-    const getRootDocCount = this.createRootDocCounter()
+    const getRootDocCount = this.createRootDocCounter(items)
-    const summaries = this.buildBranchSummaries(findRootId, getRootDocCount)
+    const summaries = this.buildBranchSummaries(
+      items,
+      findRootId,
+      getRootDocCount
+    )
     const orderedBranches = this.orderBranchesByPriority(summaries)
 
-    this._items = orderedBranches.flatMap((summary) => summary.items)
+    return orderedBranches.flatMap((summary) => summary.items)
   }
 
-  private buildParentById(): Map<number, number | null> {
+  private buildParentById(items: MatchingModel[]): Map<number, number | null> {
     const parentById = new Map<number, number | null>()
 
-    for (const item of this._items) {
+    for (const item of items) {
       if (typeof item?.id === 'number') {
         const parentValue = (item as any)['parent']
         parentById.set(
@@ -492,7 +515,9 @@ export class FilterableDropdownSelectionModel {
     return findRootId
   }
 
-  private createRootDocCounter(): (rootId: number) => number {
+  private createRootDocCounter(
+    items: MatchingModel[]
+  ): (rootId: number) => number {
     const docCountMemo = new Map<number, number>()
 
     return (rootId: number): number => {
@@ -507,7 +532,7 @@ export class FilterableDropdownSelectionModel {
         return explicit
       }
 
-      const rootItem = this._items.find((i) => i.id === rootId)
+      const rootItem = items.find((i) => i.id === rootId)
       const fallback =
         typeof (rootItem as any)?.['document_count'] === 'number'
           ? (rootItem as any)['document_count']
@@ -519,12 +544,13 @@ export class FilterableDropdownSelectionModel {
   }
 
   private buildBranchSummaries(
+    items: MatchingModel[],
     findRootId: (id: number) => number,
     getRootDocCount: (rootId: number) => number
   ): Map<string, BranchSummary> {
     const summaries = new Map<string, BranchSummary>()
 
-    for (const [index, item] of this._items.entries()) {
+    for (const [index, item] of items.entries()) {
       const { key, special, rootId } = this.describeBranchItem(
         item,
         index,
@@ -616,28 +642,23 @@ export class FilterableDropdownSelectionModel {
   }
 
   init(map: Map<number, ToggleableItemState>) {
-    this.temporarySelectionStates = map
+    this._temporarySelectionStates.set(new Map(map))
     this.apply()
   }
 
   apply() {
-    this.selectionStates.clear()
+    this._selectionStates.set(new Map(this.temporarySelectionStates))
-    this.temporarySelectionStates.forEach((value, key) => {
+    this._logicalOperator.set(this.temporaryLogicalOperator())
-      this.selectionStates.set(key, value)
+    this._intersection.set(this.temporaryIntersection())
-    })
+    this._items.set(this.sortItems(this.items))
-    this._logicalOperator = this.temporaryLogicalOperator
-    this._intersection = this.temporaryIntersection
-    this.sortItems()
   }
 
   reset(complete: boolean = false) {
-    this.temporarySelectionStates.clear()
     if (complete) {
-      this.selectionStates.clear()
+      this._selectionStates.set(new Map())
+      this._temporarySelectionStates.set(new Map())
     } else {
-      this.selectionStates.forEach((value, key) => {
+      this._temporarySelectionStates.set(new Map(this.selectionStates))
-        this.temporarySelectionStates.set(key, value)
-      })
     }
   }
 

src-ui/src/app/components/common/permissions-filter-dropdown/permissions-filter-dropdown.component.html

@@ -7,7 +7,7 @@
     <div class="list-group list-group-flush">
       <button class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" (click)="setFilter(OwnerFilterType.NONE)" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.NONE) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.NONE) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -17,7 +17,7 @@
       </button>
       <button class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" (click)="setFilter(OwnerFilterType.SELF)" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.SELF) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.SELF) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -27,7 +27,7 @@
       </button>
       <button class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" (click)="setFilter(OwnerFilterType.NOT_SELF)" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.NOT_SELF) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.NOT_SELF) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -37,7 +37,7 @@
       </button>
       <button class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" (click)="setFilter(OwnerFilterType.SHARED_BY_ME)" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.SHARED_BY_ME) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.SHARED_BY_ME) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -47,7 +47,7 @@
       </button>
       <button class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" (click)="setFilter(OwnerFilterType.UNOWNED)" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.UNOWNED) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.UNOWNED) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -57,7 +57,7 @@
       </button>
       <button *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.User }" class="list-group-item list-group-item-action d-flex align-items-center p-2 border-top-0 border-start-0 border-end-0 border-bottom" role="menuitem" [disabled]="disabled">
         <div class="selected-icon me-1">
-          @if (selectionModel.ownerFilter === OwnerFilterType.OTHERS) {
+          @if (selectionModel.ownerFilter() === OwnerFilterType.OTHERS) {
             <i-bs width="1em" height="1em" name="check"></i-bs>
           }
         </div>
@@ -65,7 +65,8 @@
           <ng-select
             name="user"
             class="user-select small"
-            [(ngModel)]="selectionModel.includeUsers"
+            [ngModel]="selectionModel.includeUsers()"
+            (ngModelChange)="selectionModel.includeUsers.set($event)"
             [disabled]="disabled"
             [clearable]="false"
             [items]="users()"
@@ -78,10 +79,10 @@
           </ng-select>
         </div>
       </button>
-      @if (selectionModel.ownerFilter === OwnerFilterType.NONE || selectionModel.ownerFilter === OwnerFilterType.NOT_SELF) {
+      @if (selectionModel.ownerFilter() === OwnerFilterType.NONE || selectionModel.ownerFilter() === OwnerFilterType.NOT_SELF) {
         <div class="list-group-item list-group-item-action d-flex align-items-center p-2 ps-3 border-bottom-0 border-start-0 border-end-0">
           <div class="form-check form-switch w-100">
-            <input type="checkbox" class="form-check-input" id="hideUnowned" [(ngModel)]="this.selectionModel.hideUnowned" (change)="onChange()" [disabled]="disabled">
+            <input type="checkbox" class="form-check-input" id="hideUnowned" [ngModel]="selectionModel.hideUnowned()" (ngModelChange)="selectionModel.hideUnowned.set($event)" (change)="onChange()" [disabled]="disabled">
             <label class="form-check-label w-100" for="hideUnowned"><small i18n>Hide unowned</small></label>
           </div>
         </div>

src-ui/src/app/components/common/permissions-filter-dropdown/permissions-filter-dropdown.component.spec.ts

@@ -90,56 +90,56 @@ describe('PermissionsFilterDropdownComponent', () => {
     component.setFilter(OwnerFilterType.OTHERS)
     expect(component.isActive).toBeTruthy()
     component.setFilter(OwnerFilterType.NONE)
-    component.selectionModel.hideUnowned = true
+    component.selectionModel.hideUnowned.set(true)
     expect(component.isActive).toBeTruthy()
   })
 
   it('should describe concrete user filters honestly', () => {
-    component.selectionModel.ownerFilter = OwnerFilterType.SELF
+    component.selectionModel.ownerFilter.set(OwnerFilterType.SELF)
-    component.selectionModel.userID = 1
+    component.selectionModel.userID.set(1)
     expect(component.ownerFilterLabel).toEqual('Owned by user1')
 
-    component.selectionModel.ownerFilter = OwnerFilterType.NOT_SELF
+    component.selectionModel.ownerFilter.set(OwnerFilterType.NOT_SELF)
-    component.selectionModel.excludeUsers = [1]
+    component.selectionModel.excludeUsers.set([1])
     expect(component.ownerExclusionFilterLabel).toEqual('Not owned by user1')
 
-    component.selectionModel.ownerFilter = OwnerFilterType.SHARED_BY_ME
+    component.selectionModel.ownerFilter.set(OwnerFilterType.SHARED_BY_ME)
-    component.selectionModel.userID = 1
+    component.selectionModel.userID.set(1)
     expect(component.sharedByFilterLabel).toEqual('Shared by user1')
   })
 
   it('should describe concrete filters when usernames are unavailable', () => {
-    component.selectionModel.ownerFilter = OwnerFilterType.SELF
+    component.selectionModel.ownerFilter.set(OwnerFilterType.SELF)
-    component.selectionModel.userID = 99
+    component.selectionModel.userID.set(99)
     expect(component.ownerFilterLabel).toEqual('Owned by another user')
 
-    component.selectionModel.ownerFilter = OwnerFilterType.NOT_SELF
+    component.selectionModel.ownerFilter.set(OwnerFilterType.NOT_SELF)
-    component.selectionModel.excludeUsers = [99]
+    component.selectionModel.excludeUsers.set([99])
     expect(component.ownerExclusionFilterLabel).toEqual(
       'Not owned by another user'
     )
 
-    component.selectionModel.excludeUsers = [98, 99]
+    component.selectionModel.excludeUsers.set([98, 99])
     expect(component.ownerExclusionFilterLabel).toEqual(
       'Not owned by selected users'
     )
 
-    component.selectionModel.ownerFilter = OwnerFilterType.SHARED_BY_ME
+    component.selectionModel.ownerFilter.set(OwnerFilterType.SHARED_BY_ME)
-    component.selectionModel.userID = 99
+    component.selectionModel.userID.set(99)
     expect(component.sharedByFilterLabel).toEqual('Shared by another user')
   })
 
   it('should retain relative labels for filters bound to the current user', () => {
-    component.selectionModel.userID = currentUserID
+    component.selectionModel.userID.set(currentUserID)
     expect(component.ownerFilterLabel).toEqual('My documents')
     expect(component.sharedByFilterLabel).toEqual('Shared by me')
 
-    component.selectionModel.excludeUsers = [currentUserID]
+    component.selectionModel.excludeUsers.set([currentUserID])
     expect(component.ownerExclusionFilterLabel).toEqual('Shared with me')
   })
 
   it('should retain relative labels for inactive filter choices', () => {
-    component.selectionModel.ownerFilter = OwnerFilterType.NONE
+    component.selectionModel.ownerFilter.set(OwnerFilterType.NONE)
 
     expect(component.ownerFilterLabel).toEqual('My documents')
     expect(component.ownerExclusionFilterLabel).toEqual('Shared with me')
@@ -148,32 +148,41 @@ describe('PermissionsFilterDropdownComponent', () => {
 
   it('should support reset', () => {
     component.setFilter(OwnerFilterType.OTHERS)
-    expect(component.selectionModel.ownerFilter).not.toEqual(
+    expect(component.selectionModel.ownerFilter()).not.toEqual(
       OwnerFilterType.NONE
     )
     component.reset()
-    expect(component.selectionModel.ownerFilter).toEqual(OwnerFilterType.NONE)
+    expect(component.selectionModel.ownerFilter()).toEqual(OwnerFilterType.NONE)
   })
 
   it('should toggle owner filter type when users selected', () => {
-    component.selectionModel.ownerFilter = OwnerFilterType.NONE
+    component.selectionModel.ownerFilter.set(OwnerFilterType.NONE)
 
     // this would normally be done by select component
-    component.selectionModel.includeUsers = [12]
+    component.selectionModel.includeUsers.set([12])
     component.onUserSelect()
-    expect(component.selectionModel.ownerFilter).toEqual(OwnerFilterType.OTHERS)
+    expect(component.selectionModel.ownerFilter()).toEqual(
+      OwnerFilterType.OTHERS
+    )
 
     // this would normally be done by select component
-    component.selectionModel.includeUsers = null
+    component.selectionModel.includeUsers.set(null)
     component.onUserSelect()
 
-    expect(component.selectionModel.ownerFilter).toEqual(OwnerFilterType.NONE)
+    expect(component.selectionModel.ownerFilter()).toEqual(OwnerFilterType.NONE)
   })
   it('should emit a selection model depending on the type of owner filter set', () => {
-    component.selectionModel.ownerFilter = OwnerFilterType.NONE
+    const emitted = () => ({
+      excludeUsers: ownerFilterSetResult.excludeUsers(),
+      hideUnowned: ownerFilterSetResult.hideUnowned(),
+      includeUsers: ownerFilterSetResult.includeUsers(),
+      ownerFilter: ownerFilterSetResult.ownerFilter(),
+      userID: ownerFilterSetResult.userID(),
+    })
+    component.selectionModel.ownerFilter.set(OwnerFilterType.NONE)
 
     component.setFilter(OwnerFilterType.SELF)
-    expect(ownerFilterSetResult).toEqual({
+    expect(emitted()).toEqual({
       excludeUsers: [],
       hideUnowned: false,
       includeUsers: [],
@@ -182,7 +191,7 @@ describe('PermissionsFilterDropdownComponent', () => {
     })
 
     component.setFilter(OwnerFilterType.NOT_SELF)
-    expect(ownerFilterSetResult).toEqual({
+    expect(emitted()).toEqual({
       excludeUsers: [currentUserID],
       hideUnowned: false,
       includeUsers: [],
@@ -191,7 +200,7 @@ describe('PermissionsFilterDropdownComponent', () => {
     })
 
     component.setFilter(OwnerFilterType.NONE)
-    expect(ownerFilterSetResult).toEqual({
+    expect(emitted()).toEqual({
       excludeUsers: [],
       hideUnowned: false,
       includeUsers: [],
@@ -200,7 +209,7 @@ describe('PermissionsFilterDropdownComponent', () => {
     })
 
     component.setFilter(OwnerFilterType.SHARED_BY_ME)
-    expect(ownerFilterSetResult).toEqual({
+    expect(emitted()).toEqual({
       excludeUsers: [],
       hideUnowned: false,
       includeUsers: [],
@@ -209,7 +218,7 @@ describe('PermissionsFilterDropdownComponent', () => {
     })
 
     component.setFilter(OwnerFilterType.UNOWNED)
-    expect(ownerFilterSetResult).toEqual({
+    expect(emitted()).toEqual({
       excludeUsers: [],
       hideUnowned: false,
       includeUsers: [],

src-ui/src/app/components/common/permissions-filter-dropdown/permissions-filter-dropdown.component.ts

@@ -25,18 +25,18 @@ import { ComponentWithPermissions } from '../../with-permissions/with-permission
 import { ClearableBadgeComponent } from '../clearable-badge/clearable-badge.component'
 
 export class PermissionsSelectionModel {
-  ownerFilter: OwnerFilterType
+  readonly ownerFilter = signal(OwnerFilterType.NONE)
-  hideUnowned: boolean
+  readonly hideUnowned = signal(false)
-  userID: number
+  readonly userID = signal<number>(null)
-  includeUsers: number[]
+  readonly includeUsers = signal<number[]>([])
-  excludeUsers: number[]
+  readonly excludeUsers = signal<number[]>([])
 
   clear() {
-    this.ownerFilter = OwnerFilterType.NONE
+    this.ownerFilter.set(OwnerFilterType.NONE)
-    this.userID = null
+    this.userID.set(null)
-    this.hideUnowned = false
+    this.hideUnowned.set(false)
-    this.includeUsers = []
+    this.includeUsers.set([])
-    this.excludeUsers = []
+    this.excludeUsers.set([])
   }
 }
 
@@ -84,33 +84,31 @@ export class PermissionsFilterDropdownComponent extends ComponentWithPermissions
 
   readonly users = signal<User[]>([])
 
-  hideUnowned: boolean
-
   get isActive(): boolean {
     return (
-      this.selectionModel.ownerFilter !== OwnerFilterType.NONE ||
+      this.selectionModel.ownerFilter() !== OwnerFilterType.NONE ||
-      this.selectionModel.hideUnowned
+      this.selectionModel.hideUnowned()
     )
   }
 
   get ownerFilterLabel(): string {
     if (
-      this.selectionModel?.ownerFilter !== OwnerFilterType.SELF ||
+      this.selectionModel?.ownerFilter() !== OwnerFilterType.SELF ||
-      this.selectionModel?.userID === this.settingsService.currentUser()?.id
+      this.selectionModel?.userID() === this.settingsService.currentUser()?.id
     ) {
       return $localize`My documents`
     }
 
-    const username = this.getUsername(this.selectionModel?.userID)
+    const username = this.getUsername(this.selectionModel?.userID())
     return username
       ? $localize`Owned by ${username}`
       : $localize`Owned by another user`
   }
 
   get ownerExclusionFilterLabel(): string {
-    const excludedUsers = this.selectionModel?.excludeUsers ?? []
+    const excludedUsers = this.selectionModel?.excludeUsers() ?? []
     if (
-      this.selectionModel?.ownerFilter !== OwnerFilterType.NOT_SELF ||
+      this.selectionModel?.ownerFilter() !== OwnerFilterType.NOT_SELF ||
       (excludedUsers.length === 1 &&
         excludedUsers[0] === this.settingsService.currentUser()?.id)
     ) {
@@ -130,13 +128,13 @@ export class PermissionsFilterDropdownComponent extends ComponentWithPermissions
 
   get sharedByFilterLabel(): string {
     if (
-      this.selectionModel?.ownerFilter !== OwnerFilterType.SHARED_BY_ME ||
+      this.selectionModel?.ownerFilter() !== OwnerFilterType.SHARED_BY_ME ||
-      this.selectionModel?.userID === this.settingsService.currentUser()?.id
+      this.selectionModel?.userID() === this.settingsService.currentUser()?.id
     ) {
       return $localize`Shared by me`
     }
 
-    const username = this.getUsername(this.selectionModel?.userID)
+    const username = this.getUsername(this.selectionModel?.userID())
     return username
       ? $localize`Shared by ${username}`
       : $localize`Shared by another user`
@@ -169,34 +167,36 @@ export class PermissionsFilterDropdownComponent extends ComponentWithPermissions
   }
 
   setFilter(type: OwnerFilterType) {
-    this.selectionModel.ownerFilter = type
+    this.selectionModel.ownerFilter.set(type)
-    if (this.selectionModel.ownerFilter === OwnerFilterType.SELF) {
+    if (this.selectionModel.ownerFilter() === OwnerFilterType.SELF) {
-      this.selectionModel.includeUsers = []
+      this.selectionModel.includeUsers.set([])
-      this.selectionModel.excludeUsers = []
+      this.selectionModel.excludeUsers.set([])
-      this.selectionModel.userID = this.settingsService.currentUser().id
+      this.selectionModel.userID.set(this.settingsService.currentUser().id)
-      this.selectionModel.hideUnowned = false
+      this.selectionModel.hideUnowned.set(false)
-    } else if (this.selectionModel.ownerFilter === OwnerFilterType.NOT_SELF) {
+    } else if (this.selectionModel.ownerFilter() === OwnerFilterType.NOT_SELF) {
-      this.selectionModel.userID = null
+      this.selectionModel.userID.set(null)
-      this.selectionModel.includeUsers = []
+      this.selectionModel.includeUsers.set([])
-      this.selectionModel.excludeUsers = [this.settingsService.currentUser().id]
+      this.selectionModel.excludeUsers.set([
-      this.selectionModel.hideUnowned = false
+        this.settingsService.currentUser().id,
-    } else if (this.selectionModel.ownerFilter === OwnerFilterType.NONE) {
+      ])
-      this.selectionModel.userID = null
+      this.selectionModel.hideUnowned.set(false)
-      this.selectionModel.includeUsers = []
+    } else if (this.selectionModel.ownerFilter() === OwnerFilterType.NONE) {
-      this.selectionModel.excludeUsers = []
+      this.selectionModel.userID.set(null)
-      this.selectionModel.hideUnowned = false
+      this.selectionModel.includeUsers.set([])
+      this.selectionModel.excludeUsers.set([])
+      this.selectionModel.hideUnowned.set(false)
     } else if (
-      this.selectionModel.ownerFilter === OwnerFilterType.SHARED_BY_ME
+      this.selectionModel.ownerFilter() === OwnerFilterType.SHARED_BY_ME
     ) {
-      this.selectionModel.userID = this.settingsService.currentUser()?.id
+      this.selectionModel.userID.set(this.settingsService.currentUser()?.id)
-      this.selectionModel.includeUsers = []
+      this.selectionModel.includeUsers.set([])
-      this.selectionModel.excludeUsers = []
+      this.selectionModel.excludeUsers.set([])
-      this.selectionModel.hideUnowned = false
+      this.selectionModel.hideUnowned.set(false)
-    } else if (this.selectionModel.ownerFilter === OwnerFilterType.UNOWNED) {
+    } else if (this.selectionModel.ownerFilter() === OwnerFilterType.UNOWNED) {
-      this.selectionModel.userID = null
+      this.selectionModel.userID.set(null)
-      this.selectionModel.includeUsers = []
+      this.selectionModel.includeUsers.set([])
-      this.selectionModel.excludeUsers = []
+      this.selectionModel.excludeUsers.set([])
-      this.selectionModel.hideUnowned = false
+      this.selectionModel.hideUnowned.set(false)
     }
     this.onChange()
   }
@@ -206,11 +206,11 @@ export class PermissionsFilterDropdownComponent extends ComponentWithPermissions
   }
 
   onUserSelect() {
-    if (this.selectionModel.includeUsers?.length) {
+    this.selectionModel.ownerFilter.set(
-      this.selectionModel.ownerFilter = OwnerFilterType.OTHERS
+      this.selectionModel.includeUsers()?.length
-    } else {
+        ? OwnerFilterType.OTHERS
-      this.selectionModel.ownerFilter = OwnerFilterType.NONE
+        : OwnerFilterType.NONE
-    }
+    )
     this.onChange()
   }
 

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

@@ -1209,24 +1209,53 @@ describe('DocumentDetailComponent', () => {
     expect(fixture.debugElement.queryAll(By.css('textarea.rtl'))).not.toBeNull()
   })
 
-  it('should display built-in pdf viewer if not disabled', () => {
+  it('should display built-in pdf viewer if not disabled', async () => {
     initNormally()
-    component.document().archived_file_name = 'file.pdf'
+    component.document.update((document) => ({
+      ...document,
+      archived_file_name: 'file.pdf',
+    }))
     settingsService.set(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, false)
     expect(component.useNativePdfViewer).toBeFalsy()
-    fixture.detectChanges()
+    await fixture.whenStable()
     expect(fixture.debugElement.query(By.css('pngx-pdf-viewer'))).not.toBeNull()
   })
 
   it('should display native pdf viewer if enabled', () => {
     initNormally()
-    component.document().archived_file_name = 'file.pdf'
+    component.document.update((document) => ({
+      ...document,
+      archived_file_name: 'file.pdf',
+    }))
     settingsService.set(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, true)
     expect(component.useNativePdfViewer).toBeTruthy()
     fixture.detectChanges()
     expect(fixture.debugElement.query(By.css('object'))).not.toBeNull()
   })
 
+  it('should reflect signal-backed document detail display settings', () => {
+    settingsService.set(SETTINGS_KEYS.DOCUMENT_EDITING_OVERLAY_THUMBNAIL, false)
+    settingsService.set(SETTINGS_KEYS.DOCUMENT_DETAILS_HIDDEN_FIELDS, [
+      component.DocumentDetailFieldID.Correspondent,
+    ])
+
+    expect(component.showThumbnailOverlay).toBeFalsy()
+    expect(
+      component.isFieldHidden(component.DocumentDetailFieldID.Correspondent)
+    ).toBeTruthy()
+    expect(
+      component.isFieldHidden(component.DocumentDetailFieldID.DocumentType)
+    ).toBeFalsy()
+
+    settingsService.set(SETTINGS_KEYS.DOCUMENT_EDITING_OVERLAY_THUMBNAIL, true)
+    settingsService.set(SETTINGS_KEYS.DOCUMENT_DETAILS_HIDDEN_FIELDS, [])
+
+    expect(component.showThumbnailOverlay).toBeTruthy()
+    expect(
+      component.isFieldHidden(component.DocumentDetailFieldID.Correspondent)
+    ).toBeFalsy()
+  })
+
   it('should attempt to retrieve metadata', () => {
     const metadataSpy = jest.spyOn(documentService, 'getMetadata')
     metadataSpy.mockReturnValue(of({ has_archive_version: true }))
@@ -1685,7 +1714,10 @@ describe('DocumentDetailComponent', () => {
 
   it('should change preview element by render type', () => {
     initNormally()
-    component.document().archived_file_name = 'file.pdf'
+    component.document.update((document) => ({
+      ...document,
+      archived_file_name: 'file.pdf',
+    }))
     fixture.detectChanges()
     expect(component.archiveContentRenderType).toEqual(
       component.ContentRenderType.PDF
@@ -1694,8 +1726,11 @@ describe('DocumentDetailComponent', () => {
       fixture.debugElement.query(By.css('pdf-viewer-container'))
     ).not.toBeUndefined()
 
-    component.document().archived_file_name = undefined
+    component.document.update((document) => ({
-    component.document().mime_type = 'text/plain'
+      ...document,
+      archived_file_name: undefined,
+      mime_type: 'text/plain',
+    }))
     fixture.detectChanges()
     expect(component.archiveContentRenderType).toEqual(
       component.ContentRenderType.Text
@@ -1704,7 +1739,10 @@ describe('DocumentDetailComponent', () => {
       fixture.debugElement.query(By.css('div.preview-sticky'))
     ).not.toBeUndefined()
 
-    component.document().mime_type = 'image/jpeg'
+    component.document.update((document) => ({
+      ...document,
+      mime_type: 'image/jpeg',
+    }))
     fixture.detectChanges()
     expect(component.archiveContentRenderType).toEqual(
       component.ContentRenderType.Image
@@ -1712,9 +1750,12 @@ describe('DocumentDetailComponent', () => {
     expect(
       fixture.debugElement.query(By.css('.preview-sticky img'))
     ).not.toBeUndefined()
-    ;((component.document().mime_type =
+    component.document.update((document) => ({
-      'application/vnd.openxmlformats-officedocument.wordprocessingml.document'),
+      ...document,
-      fixture.detectChanges())
+      mime_type:
+        'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+    }))
+    fixture.detectChanges()
     expect(component.archiveContentRenderType).toEqual(
       component.ContentRenderType.Other
     )

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

@@ -227,6 +227,19 @@ export class DocumentDetailComponent
   private deviceDetectorService = inject(DeviceDetectorService)
   private savedViewService = inject(SavedViewService)
   private readonly websocketStatusService = inject(WebsocketStatusService)
+  private readonly useNativePdfViewerSetting = this.settings.getSignal<boolean>(
+    SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER
+  )
+  private readonly aiEnabledSetting = this.settings.getSignal<boolean>(
+    SETTINGS_KEYS.AI_ENABLED
+  )
+  private readonly showThumbnailOverlaySetting =
+    this.settings.getSignal<boolean>(
+      SETTINGS_KEYS.DOCUMENT_EDITING_OVERLAY_THUMBNAIL
+    )
+  private readonly hiddenFieldsSetting = this.settings.getSignal<
+    DocumentDetailFieldID[]
+  >(SETTINGS_KEYS.DOCUMENT_DETAILS_HIDDEN_FIELDS)
 
   @ViewChild('inputTitle')
   titleInput: TextComponent
@@ -333,8 +346,7 @@ export class DocumentDetailComponent
   }
 
   get useNativePdfViewer(): boolean {
-    this.settings.trackChanges()
+    return this.useNativePdfViewerSetting()
-    return this.settings.get(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER)
   }
 
   get isMobile(): boolean {
@@ -342,12 +354,10 @@ export class DocumentDetailComponent
   }
 
   get aiEnabled(): boolean {
-    this.settings.trackChanges()
+    return this.aiEnabledSetting()
-    return this.settings.get(SETTINGS_KEYS.AI_ENABLED)
   }
 
   get archiveContentRenderType(): ContentRenderType {
-    this.settings.trackChanges()
     const hasArchiveVersion =
       this.metadata()?.has_archive_version ??
       !!this.document()?.archived_file_name
@@ -359,22 +369,17 @@ export class DocumentDetailComponent
   }
 
   get originalContentRenderType(): ContentRenderType {
-    this.settings.trackChanges()
     return this.getRenderType(
       this.metadata()?.original_mime_type || this.document()?.mime_type
     )
   }
 
   get showThumbnailOverlay(): boolean {
-    this.settings.trackChanges()
+    return this.showThumbnailOverlaySetting()
-    return this.settings.get(SETTINGS_KEYS.DOCUMENT_EDITING_OVERLAY_THUMBNAIL)
   }
 
   isFieldHidden(fieldId: DocumentDetailFieldID): boolean {
-    this.settings.trackChanges()
+    return this.hiddenFieldsSetting().includes(fieldId)
-    return this.settings
-      .get(SETTINGS_KEYS.DOCUMENT_DETAILS_HIDDEN_FIELDS)
-      .includes(fieldId)
   }
 
   private getRenderType(mimeType: string): ContentRenderType {

src-ui/src/app/components/document-list/document-list.component.ts

@@ -121,6 +121,8 @@ export class DocumentListComponent
   settingsService = inject(SettingsService)
   private hotKeyService = inject(HotKeyService)
   permissionService = inject(PermissionsService)
+  private readonly notesEnabledSetting =
+    this.settingsService.getSignal<boolean>(SETTINGS_KEYS.NOTES_ENABLED)
 
   DisplayField = DisplayField
   DisplayMode = DisplayMode
@@ -574,8 +576,7 @@ export class DocumentListComponent
   }
 
   get notesEnabled(): boolean {
-    this.settingsService.trackChanges()
+    return this.notesEnabledSetting()
-    return this.settingsService.get(SETTINGS_KEYS.NOTES_ENABLED)
   }
 
   resetFilters() {

src-ui/src/app/components/document-list/filter-editor/filter-editor.component.spec.ts

@@ -621,6 +621,43 @@ describe('FilterEditorComponent', () => {
     component.toggleTag(2) // coverage
   })
 
+  it('should reflect ingested tag filter rules in the dropdown toggle', () => {
+    const dropdown = fixture.debugElement.query(
+      By.css('pngx-filterable-dropdown')
+    )
+    const toggle = dropdown.nativeElement.querySelector('#dropdown_tags')
+    expect(toggle.classList.contains('btn-primary')).toBeFalsy()
+    expect(
+      dropdown.nativeElement.querySelector('pngx-clearable-badge')
+    ).toBeNull()
+
+    // switching to a view with a tag filter
+    component.filterRules = [
+      {
+        rule_type: FILTER_HAS_TAGS_ALL,
+        value: '2',
+      },
+    ]
+    fixture.detectChanges()
+    expect(toggle.classList.contains('btn-primary')).toBeTruthy()
+    expect(
+      dropdown.nativeElement.querySelector('pngx-clearable-badge')
+    ).not.toBeNull()
+
+    // and back to a view without one
+    component.filterRules = [
+      {
+        rule_type: FILTER_HAS_CORRESPONDENT_ANY,
+        value: '12',
+      },
+    ]
+    fixture.detectChanges()
+    expect(toggle.classList.contains('btn-primary')).toBeFalsy()
+    expect(
+      dropdown.nativeElement.querySelector('pngx-clearable-badge')
+    ).toBeNull()
+  })
+
   it('should ingest filter rules for has any tags', () => {
     expect(component.tagSelectionModel.getSelectedItems()).toHaveLength(0)
     component.filterRules = [
@@ -1078,7 +1115,7 @@ describe('FilterEditorComponent', () => {
   })
 
   it('should ingest filter rules for owner', () => {
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.NONE
     )
     component.filterRules = [
@@ -1087,15 +1124,38 @@ describe('FilterEditorComponent', () => {
         value: '100',
       },
     ]
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.SELF
     )
-    expect(component.permissionsSelectionModel.hideUnowned).toBeFalsy()
+    expect(component.permissionsSelectionModel.hideUnowned()).toBeFalsy()
-    expect(component.permissionsSelectionModel.userID).toEqual(100)
+    expect(component.permissionsSelectionModel.userID()).toEqual(100)
+  })
+
+  it('should reflect ingested owner filter rules in the dropdown toggle', () => {
+    const dropdown = fixture.debugElement.query(
+      By.css('pngx-permissions-filter-dropdown')
+    )
+    const toggle = dropdown.nativeElement.querySelector('button')
+    expect(toggle.classList.contains('btn-primary')).toBeFalsy()
+
+    // switching to a view with an owner filter
+    component.filterRules = [
+      {
+        rule_type: FILTER_OWNER,
+        value: '100',
+      },
+    ]
+    fixture.detectChanges()
+    expect(toggle.classList.contains('btn-primary')).toBeTruthy()
+
+    // and back to a view without one
+    component.filterRules = []
+    fixture.detectChanges()
+    expect(toggle.classList.contains('btn-primary')).toBeFalsy()
   })
 
   it('should ingest filter rules for owner is others', () => {
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.NONE
     )
     component.filterRules = [
@@ -1104,14 +1164,14 @@ describe('FilterEditorComponent', () => {
         value: '50',
       },
     ]
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.OTHERS
     )
-    expect(component.permissionsSelectionModel.includeUsers).toContain(50)
+    expect(component.permissionsSelectionModel.includeUsers()).toContain(50)
   })
 
   it('should ingest filter rules for owner does not include others', () => {
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.NONE
     )
     component.filterRules = [
@@ -1120,14 +1180,14 @@ describe('FilterEditorComponent', () => {
         value: '50',
       },
     ]
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.NOT_SELF
     )
-    expect(component.permissionsSelectionModel.excludeUsers).toContain(50)
+    expect(component.permissionsSelectionModel.excludeUsers()).toContain(50)
   })
 
   it('should ingest filter rules for owner is null', () => {
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.NONE
     )
     component.filterRules = [
@@ -1136,10 +1196,10 @@ describe('FilterEditorComponent', () => {
         value: 'true',
       },
     ]
-    expect(component.permissionsSelectionModel.ownerFilter).toEqual(
+    expect(component.permissionsSelectionModel.ownerFilter()).toEqual(
       OwnerFilterType.UNOWNED
     )
-    expect(component.permissionsSelectionModel.hideUnowned).toBeFalsy()
+    expect(component.permissionsSelectionModel.hideUnowned()).toBeFalsy()
   })
 
   it('should ingest filter rules for owner is not null', () => {
@@ -1149,14 +1209,14 @@ describe('FilterEditorComponent', () => {
         value: 'false',
       },
     ]
-    expect(component.permissionsSelectionModel.hideUnowned).toBeTruthy()
+    expect(component.permissionsSelectionModel.hideUnowned()).toBeTruthy()
     component.filterRules = [
       {
         rule_type: FILTER_OWNER_ISNULL,
         value: '0',
       },
     ]
-    expect(component.permissionsSelectionModel.hideUnowned).toBeTruthy()
+    expect(component.permissionsSelectionModel.hideUnowned()).toBeTruthy()
   })
 
   it('should ingest filter rules for shared by me', () => {
@@ -1166,7 +1226,7 @@ describe('FilterEditorComponent', () => {
         value: '2',
       },
     ]
-    expect(component.permissionsSelectionModel.userID).toEqual(2)
+    expect(component.permissionsSelectionModel.userID()).toEqual(2)
   })
 
   // GET filterRules
@@ -1932,7 +1992,10 @@ describe('FilterEditorComponent', () => {
         value: '1',
       },
     ])
-    component.permissionsSelectionModel.excludeUsers.push(2)
+    component.permissionsSelectionModel.excludeUsers.update((users) => [
+      ...users,
+      2,
+    ])
     fixture.detectChanges()
     expect(component.filterRules).toEqual([
       {
@@ -1982,8 +2045,11 @@ describe('FilterEditorComponent', () => {
     // TODO: mock input in code
     // userSelect.query(By.css('input')).nativeElement.value = '3'
     // userSelect.triggerEventHandler('change')
-    component.permissionsSelectionModel.ownerFilter = OwnerFilterType.OTHERS
+    component.permissionsSelectionModel.ownerFilter.set(OwnerFilterType.OTHERS)
-    component.permissionsSelectionModel.includeUsers.push(3)
+    component.permissionsSelectionModel.includeUsers.update((users) => [
+      ...users,
+      3,
+    ])
     fixture.detectChanges()
     expect(component.filterRules).toEqual([
       {
@@ -2003,7 +2069,7 @@ describe('FilterEditorComponent', () => {
     ownerToggle.nativeElement.checked = true
     // ownerToggle.triggerEventHandler('change')
     // TODO: ngModel isn't doing this here
-    component.permissionsSelectionModel.hideUnowned = true
+    component.permissionsSelectionModel.hideUnowned.set(true)
     fixture.detectChanges()
     expect(component.filterRules).toEqual([
       {

src-ui/src/app/components/document-list/filter-editor/filter-editor.component.ts

@@ -735,38 +735,50 @@ export class FilterEditorComponent
           this._textFilter = rule.value
           break
         case FILTER_OWNER:
-          this.permissionsSelectionModel.ownerFilter = OwnerFilterType.SELF
+          this.permissionsSelectionModel.ownerFilter.set(OwnerFilterType.SELF)
-          this.permissionsSelectionModel.hideUnowned = false
+          this.permissionsSelectionModel.hideUnowned.set(false)
           if (rule.value)
-            this.permissionsSelectionModel.userID = parseInt(rule.value, 10)
+            this.permissionsSelectionModel.userID.set(
+              Number.parseInt(rule.value, 10)
+            )
           break
         case FILTER_OWNER_ANY:
-          this.permissionsSelectionModel.ownerFilter = OwnerFilterType.OTHERS
+          this.permissionsSelectionModel.ownerFilter.set(OwnerFilterType.OTHERS)
           if (rule.value)
-            this.permissionsSelectionModel.includeUsers.push(
+            this.permissionsSelectionModel.includeUsers.update((users) => [
-              parseInt(rule.value, 10)
+              ...users,
-            )
+              Number.parseInt(rule.value, 10),
+            ])
           break
         case FILTER_OWNER_DOES_NOT_INCLUDE:
-          this.permissionsSelectionModel.ownerFilter = OwnerFilterType.NOT_SELF
+          this.permissionsSelectionModel.ownerFilter.set(
+            OwnerFilterType.NOT_SELF
+          )
           if (rule.value)
-            this.permissionsSelectionModel.excludeUsers.push(
+            this.permissionsSelectionModel.excludeUsers.update((users) => [
-              parseInt(rule.value, 10)
+              ...users,
-            )
+              Number.parseInt(rule.value, 10),
+            ])
           break
         case FILTER_SHARED_BY_USER:
-          this.permissionsSelectionModel.ownerFilter =
+          this.permissionsSelectionModel.ownerFilter.set(
             OwnerFilterType.SHARED_BY_ME
+          )
           if (rule.value)
-            this.permissionsSelectionModel.userID = parseInt(rule.value, 10)
+            this.permissionsSelectionModel.userID.set(
+              Number.parseInt(rule.value, 10)
+            )
           break
         case FILTER_OWNER_ISNULL:
           if (rule.value === 'true' || rule.value === '1') {
-            this.permissionsSelectionModel.hideUnowned = false
+            this.permissionsSelectionModel.hideUnowned.set(false)
-            this.permissionsSelectionModel.ownerFilter = OwnerFilterType.UNOWNED
+            this.permissionsSelectionModel.ownerFilter.set(
+              OwnerFilterType.UNOWNED
+            )
           } else {
-            this.permissionsSelectionModel.hideUnowned =
+            this.permissionsSelectionModel.hideUnowned.set(
               rule.value === 'false' || rule.value === '0'
+            )
             break
           }
       }
@@ -1074,34 +1086,35 @@ export class FilterEditorComponent
         })
       }
     }
-    if (this.permissionsSelectionModel.ownerFilter == OwnerFilterType.SELF) {
+    if (this.permissionsSelectionModel.ownerFilter() == OwnerFilterType.SELF) {
       filterRules.push({
         rule_type: FILTER_OWNER,
-        value: this.permissionsSelectionModel.userID.toString(),
+        value: this.permissionsSelectionModel.userID().toString(),
       })
     } else if (
-      this.permissionsSelectionModel.ownerFilter == OwnerFilterType.NOT_SELF
+      this.permissionsSelectionModel.ownerFilter() == OwnerFilterType.NOT_SELF
     ) {
       filterRules.push({
         rule_type: FILTER_OWNER_DOES_NOT_INCLUDE,
-        value: this.permissionsSelectionModel.excludeUsers?.join(','),
+        value: this.permissionsSelectionModel.excludeUsers()?.join(','),
       })
     } else if (
-      this.permissionsSelectionModel.ownerFilter == OwnerFilterType.OTHERS
+      this.permissionsSelectionModel.ownerFilter() == OwnerFilterType.OTHERS
     ) {
       filterRules.push({
         rule_type: FILTER_OWNER_ANY,
-        value: this.permissionsSelectionModel.includeUsers?.join(','),
+        value: this.permissionsSelectionModel.includeUsers()?.join(','),
       })
     } else if (
-      this.permissionsSelectionModel.ownerFilter == OwnerFilterType.SHARED_BY_ME
+      this.permissionsSelectionModel.ownerFilter() ==
+      OwnerFilterType.SHARED_BY_ME
     ) {
       filterRules.push({
         rule_type: FILTER_SHARED_BY_USER,
-        value: this.permissionsSelectionModel.userID.toString(),
+        value: this.permissionsSelectionModel.userID().toString(),
       })
     } else if (
-      this.permissionsSelectionModel.ownerFilter == OwnerFilterType.UNOWNED
+      this.permissionsSelectionModel.ownerFilter() == OwnerFilterType.UNOWNED
     ) {
       filterRules.push({
         rule_type: FILTER_OWNER_ISNULL,
@@ -1109,7 +1122,7 @@ export class FilterEditorComponent
       })
     }
 
-    if (this.permissionsSelectionModel.hideUnowned) {
+    if (this.permissionsSelectionModel.hideUnowned()) {
       filterRules.push({
         rule_type: FILTER_OWNER_ISNULL,
         value: 'false',

src-ui/src/app/services/settings.service.spec.ts

@@ -210,6 +210,48 @@ describe('SettingsService', () => {
     expect(settingsService.get(SETTINGS_KEYS.THEME_COLOR)).toEqual('#000000')
   })
 
+  it('provides stable signals that update when settings change', () => {
+    const req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}ui_settings/`
+    )
+    req.flush(ui_settings)
+
+    const notesEnabled = settingsService.getSignal<boolean>(
+      SETTINGS_KEYS.NOTES_ENABLED
+    )
+
+    expect(notesEnabled()).toBeTruthy()
+    expect(
+      settingsService.getSignal<boolean>(SETTINGS_KEYS.NOTES_ENABLED)
+    ).toBe(notesEnabled)
+
+    settingsService.set(SETTINGS_KEYS.NOTES_ENABLED, false)
+
+    expect(notesEnabled()).toBeFalsy()
+  })
+
+  it('updates setting signals when settings are reinitialized', () => {
+    let req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}ui_settings/`
+    )
+    req.flush(ui_settings)
+    const appTitle = settingsService.getSignal<string>(SETTINGS_KEYS.APP_TITLE)
+
+    settingsService.initializeSettings().subscribe()
+    req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}ui_settings/`
+    )
+    req.flush({
+      ...ui_settings,
+      settings: {
+        ...ui_settings.settings,
+        app_title: 'Updated title',
+      },
+    })
+
+    expect(appTitle()).toBe('Updated title')
+  })
+
   it('sets django cookie for languages', () => {
     httpTestingController
       .expectOne(`${environment.apiBaseUrl}ui_settings/`)

src-ui/src/app/services/settings.service.ts

@@ -2,6 +2,8 @@ import { HttpClient } from '@angular/common/http'
 import {
   DOCUMENT,
   EventEmitter,
+  Signal,
+  computed,
   inject,
   Injectable,
   LOCALE_ID,
@@ -297,6 +299,7 @@ export class SettingsService {
 
   private settings: Record<string, any> = {}
   private readonly settingsVersion = signal(0)
+  private readonly settingSignals = new Map<string, Signal<unknown>>()
   readonly currentUser = signal<User>(undefined)
 
   public settingsSaved: EventEmitter<any> = new EventEmitter()
@@ -326,10 +329,6 @@ export class SettingsService {
     return !UNSAFE_OBJECT_KEYS.has(key)
   }
 
-  public trackChanges(): void {
-    this.settingsVersion()
-  }
-
   private assignSafeSettings(source: Record<string, any>) {
     if (!source || typeof source !== 'object' || Array.isArray(source)) {
       return
@@ -339,6 +338,7 @@ export class SettingsService {
       if (!this.isSafeObjectKey(key)) continue
       this.settings[key] = source[key]
     }
+    this.settingsVersion.update((version) => version + 1)
   }
 
   // this is called by the app initializer in app.module
@@ -594,6 +594,18 @@ export class SettingsService {
     }
   }
 
+  getSignal<T = any>(key: string): Signal<T> {
+    let settingSignal = this.settingSignals.get(key)
+    if (!settingSignal) {
+      settingSignal = computed(() => {
+        this.settingsVersion()
+        return this.get(key)
+      })
+      this.settingSignals.set(key, settingSignal)
+    }
+    return settingSignal as Signal<T>
+  }
+
   set(key: string, value: any) {
     // parse key:key:key into nested object
     let settingObj = this.settings

src/documents/tests/test_api_app_config.py

@@ -1063,3 +1063,79 @@ class TestApiAppConfig(DirectoriesMixin, APITestCase):
         )
         self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
         self.assertIn("non-public address", str(response.data).lower())
+
+    @override_settings(REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS=False)
+    def test_update_remote_ocr_endpoint_blocks_internal_endpoint_when_disallowed(
+        self,
+    ) -> None:
+        """
+        GIVEN:
+            - Internal remote OCR endpoints are disallowed
+        WHEN:
+            - The config is updated with a remote OCR endpoint resolving internally
+        THEN:
+            - The request is rejected
+        """
+        response = self.client.patch(
+            f"{self.ENDPOINT}1/",
+            json.dumps(
+                {
+                    "remote_ocr_endpoint": "http://127.0.0.1:5000",
+                },
+            ),
+            content_type="application/json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+        self.assertIn("non-public address", str(response.data).lower())
+
+    @override_settings(REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS=True)
+    def test_update_remote_ocr_endpoint_allows_internal_endpoint_by_default(
+        self,
+    ) -> None:
+        """
+        GIVEN:
+            - Internal remote OCR endpoints are allowed (the default)
+        WHEN:
+            - The config is updated with a remote OCR endpoint resolving internally
+        THEN:
+            - The request is accepted, preserving existing self-hosted deployments
+        """
+        response = self.client.patch(
+            f"{self.ENDPOINT}1/",
+            json.dumps(
+                {
+                    "remote_ocr_endpoint": "http://127.0.0.1:5000",
+                },
+            ),
+            content_type="application/json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(
+            response.data["remote_ocr_endpoint"],
+            "http://127.0.0.1:5000",
+        )
+
+    @override_settings(REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS=False)
+    def test_update_remote_ocr_endpoint_empty_value_skips_validation(
+        self,
+    ) -> None:
+        """
+        GIVEN:
+            - Internal remote OCR endpoints are disallowed
+        WHEN:
+            - The config is updated with an empty remote OCR endpoint
+        THEN:
+            - The request is accepted; clearing the field never needs
+              outbound URL validation
+        """
+        response = self.client.patch(
+            f"{self.ENDPOINT}1/",
+            json.dumps(
+                {
+                    "remote_ocr_endpoint": "",
+                },
+            ),
+            content_type="application/json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["remote_ocr_endpoint"], "")

src/paperless/parsers/remote.py

@@ -32,6 +32,8 @@ if TYPE_CHECKING:
     import datetime
     from types import TracebackType
 
+    from azure.core.pipeline import PipelineRequest
+
     from paperless.parsers import MetadataEntry
     from paperless.parsers import ParserContext
 
@@ -436,9 +438,45 @@ class RemoteDocumentParser:
         from azure.ai.documentintelligence.models import DocumentContentFormat
         from azure.core.credentials import AzureKeyCredential
 
+        from paperless.network import validate_outbound_http_url
+
+        allow_internal = settings.REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS
+
+        try:
+            validate_outbound_http_url(config.endpoint, allow_internal=allow_internal)
+        except ValueError as e:
+            raise ParseError(f"Invalid remote OCR endpoint: {e}") from e
+
+        def _revalidate_request_host(request: PipelineRequest) -> None:
+            """Re-validates the destination host of every request sent.
+
+            The check above only covers the moment the client is built. A
+            single analysis involves several requests spread over the
+            polling loop below, and any one of them can be redirected.
+            Wiring this through ``raw_request_hook`` (Azure's built-in
+            CustomHookPolicy) rather than a custom policy means it runs
+            *after* RedirectPolicy in the pipeline, so it sees - and
+            re-checks - every actual outbound URL, including redirect
+            targets, not just the original request.
+            """
+            validate_outbound_http_url(
+                request.http_request.url,
+                allow_internal=allow_internal,
+            )
+
         client = DocumentIntelligenceClient(
             endpoint=config.endpoint,
             credential=AzureKeyCredential(config.api_key),
+            raw_request_hook=_revalidate_request_host,
+            # AzureKeyCredential is sent as Ocp-Apim-Subscription-Key, which
+            # Azure's default SensitiveHeaderCleanupPolicy does not strip on
+            # a cross-domain redirect (only Authorization and
+            # x-ms-authorization-auxiliary are, by default).
+            blocked_redirect_headers=[
+                "Authorization",
+                "x-ms-authorization-auxiliary",
+                "Ocp-Apim-Subscription-Key",
+            ],
         )
 
         try:

src/paperless/serialisers.py

@@ -305,6 +305,22 @@ class ApplicationConfigurationSerializer(
 
     validate_llm_embedding_endpoint = validate_llm_endpoint
 
+    def validate_remote_ocr_endpoint(self, value: str | None) -> str | None:
+        if not value:
+            return value
+
+        try:
+            validate_outbound_http_url(
+                value,
+                allow_internal=settings.REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS,
+            )
+        except ValueError as e:
+            raise serializers.ValidationError(
+                f"Invalid remote OCR endpoint: {e.args[0]}, see logs for details",
+            ) from e
+
+        return value
+
     class Meta:
         model = ApplicationConfiguration
         fields = "__all__"

src/paperless/settings/__init__.py

@@ -1208,6 +1208,10 @@ REMOTE_OCR_MODE = get_choice_from_env(
     {"always", "workflow_only"},
     default="always",
 )
+REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS = get_bool_from_env(
+    "PAPERLESS_REMOTE_OCR_ALLOW_INTERNAL_ENDPOINTS",
+    "true",
+)
 
 ################################################################################
 # AI Settings                                                                  #