Introduce SSR authentication service for EnvelopeReceiverPage

Replaced the WASM client-side authentication service with a new
SSR (Server-Side Rendering) authentication service to resolve
issues in SSR mode caused by self-referencing HTTP requests and
the lack of `HttpContext`.

Added `IEnvelopeAuthService` interface and its implementation
`EnvelopeAuthService`, which directly accesses `HttpContext.User`
to validate user authentication and claims. Registered the service
in the DI container with a scoped lifetime.

Updated `EnvelopeReceiverPage.razor` to use the new SSR service
for authentication checks and logout logic. Changes to the page
were reverted due to a merge conflict, with a detailed plan
provided for re-application.

Improved logging for debugging authentication issues and outlined
a migration checklist, including testing, unit tests, and
documentation updates. These changes improve performance, ensure
SSR compatibility, and eliminate unnecessary HTTP requests.

AGENTS.md

@@ -0,0 +1,263 @@
+# EnvelopeGenerator - Agent Guide
+
+## Must Read First
+- **`COPILOT_CONTEXT.md`** - Architecture, coordinate systems, migration status
+- **`FORM_APPLICATION_CONTEXT.md`** - Legacy VB.NET features to migrate
+
+## Active Architecture (Post-Migration)
+
+**Frontend:** Blazor Auto (Server+WASM hybrid)
+- **WebUI** (Server): `@rendermode InteractiveServer` - PDF viewers requiring DevExpress backend
+- **WebUI.Client** (WASM): `@rendermode InteractiveWebAssembly` - Login, dashboards, business logic
+
+**Backend:** EnvelopeGenerator.API (ASP.NET Core 8.0)
+
+**Proxy:** YARP in WebUI routes `/api/*` → `localhost:8088` (API)
+
+### Deprecated Projects - DO NOT USE
+- `EnvelopeGenerator.ReceiverUI` - Pure WASM (migrated to WebUI)
+- `EnvelopeGenerator.Web` - Razor Pages (replaced by WebUI)
+- **VB.NET projects** (`Form`, `Service`, `BBTests`) - Legacy, read-only for reference
+
+## Development Commands
+
+### Run Both Projects (Required)
+```powershell
+# Terminal 1 - API Backend
+cd EnvelopeGenerator.API
+dotnet run
+
+# Terminal 2 - Blazor Frontend
+cd EnvelopeGenerator.WebUI\EnvelopeGenerator.WebUI
+dotnet run
+```
+
+**Critical:** Both must run simultaneously. WebUI proxy forwards `/api/*` to API.
+
+### Build
+```powershell
+dotnet build EnvelopeGenerator.sln
+```
+
+## Project Boundaries
+
+```
+EnvelopeGenerator.Domain/          # Entities (Envelope, Receiver, Document, etc.)
+EnvelopeGenerator.Application/     # MediatR CQRS (Commands, Queries, Handlers)
+EnvelopeGenerator.Infrastructure/  # EF Core, SQL executors, repositories
+EnvelopeGenerator.API/             # Controllers, endpoints
+EnvelopeGenerator.WebUI/           # Server-side Blazor components
+  ├─ Components/Pages/             # @rendermode InteractiveServer
+EnvelopeGenerator.WebUI.Client/    # Client-side WASM components
+  ├─ Pages/                        # @rendermode InteractiveWebAssembly
+  ├─ Services/                     # HTTP API clients
+  ├─ Models/                       # DTOs
+```
+
+## Route Structure (Critical)
+
+| Route | File Location | Render Mode | Purpose |
+|-------|--------------|-------------|---------|
+| `/` | `WebUI.Client/Pages/Index.razor` | WASM | Landing page |
+| `/sender/login` | `WebUI.Client/Pages/LoginSenderPage.razor` | WASM | Sender auth |
+| `/sender` | `WebUI.Client/Pages/EnvelopeSenderPage.razor` | WASM | Sender dashboard |
+| `/envelope/login/{key}` | `WebUI.Client/Pages/LoginReceiverPage.razor` | WASM | Receiver auth |
+| `/envelope/{key}` | `WebUI/Components/Pages/EnvelopeReceiverPage.razor` | **Server** | PDF viewer + signing |
+
+**Rule:** PDF viewers MUST use `@rendermode InteractiveServer` (DevExpress backend requirement). Everything else uses WASM.
+
+## Coordinate System (CRITICAL)
+
+**Database stores INCHES** (GdPicture14 native). Origin: top-left, Y-axis down.
+
+### Conversions
+```csharp
+// Database (INCHES) → PDF Points
+float points = inches * 72;
+
+// Database (INCHES) → DevExpress DX
+float dx = inches * 100;
+
+// PDF.js Pixels → Database (INCHES)
+float inches = (pixelX / canvasWidth) * pageWidthInches;
+```
+
+**A4 Page:** 8.27" wide × 11.69" tall = 595pt × 842pt
+
+**Signature Field Size:** 1.77" × 1.96" (FIXED, do not change)
+
+**Evidence:** See `COPILOT_CONTEXT.md` lines 158-185, `EnvelopeGenerator.Form/frmFieldEditor.vb`
+
+## API Architecture Quirks
+
+### Monolithic Endpoint (Avoid for UI)
+`POST /api/EnvelopeReceiver` - Creates envelope+document+receivers+fields atomically.
+- **Use case:** External API consumers
+- **Not suitable for:** Step-by-step UI workflow (no draft support, no partial updates)
+
+### Missing Granular Endpoints (Need to Create)
+```
+POST /api/Envelope/draft          # Create draft envelope
+PUT /api/Envelope/{id}            # Update metadata
+DELETE /api/Envelope/{id}         # Delete with reason
+POST /api/Envelope/{id}/document  # Upload PDF
+POST /api/Envelope/{id}/receivers # Add receiver
+POST /api/Envelope/{id}/signature-fields  # Place signature field
+POST /api/Envelope/{id}/send      # Send to receivers
+```
+
+See `FORM_APPLICATION_CONTEXT.md` for detailed workflow requirements.
+
+## Status Color Coding
+
+Form app uses DevExpress `CustomDrawCell`. WebUI needs CSS:
+
+```css
+.envelope-row.status-partly-signed { background-color: #81C784; } /* GREEN_300 */
+.envelope-row.status-queued,
+.envelope-row.status-sent { background-color: #FFB74D; } /* ORANGE_300 */
+.envelope-row.status-completed { background-color: #81C784; }
+.envelope-row.status-deleted,
+.envelope-row.status-rejected { background-color: #E57373; } /* RED_300 */
+```
+
+## Configuration
+
+### YARP Proxy (`WebUI/yarp.json`)
+Routes `/api/*`, `/swagger/*`, `/openapi/*`, `/scalar/*` → `https://localhost:8088`
+
+### PDF.js Settings (`WebUI/wwwroot/appsettings.json`)
+```json
+{
+  "PdfViewerOptions": {
+    "ThumbnailBaseScale": 0.75,
+    "ThumbnailEnableHiDPI": true,
+    "MainCanvasEnableHiDPI": true,
+    "ZoomStepPercentage": 5
+  }
+}
+```
+
+### API Config (`API/appsettings.json`)
+- `ConnectionStrings:Default` - SQL Server DB
+- `AllowedOrigins` - CORS (includes `http://localhost:5131`, `http://localhost:7192`)
+- `Cache:SignatureCacheExpiration` - Signature persistence timeout
+- `PSPDFKitLicenseKey` - **DEPRECATED** (use PDF.js instead)
+
+## Migration Status
+
+### Complete ✅
+- Receiver login/authentication
+- PDF viewing with PDF.js (HiDPI, zoom, thumbnails)
+- Signature capture (draw/type/image)
+- Signature caching (Redis/SQL)
+- Sender login
+
+### Missing (High Priority) ❌
+- Sender dashboard (`/sender`) - Empty stub
+- Envelope editor (`/sender/envelope/{id}`)
+- Signature field placement tool (PDF.js + draggable overlays)
+- Granular API endpoints (draft, receivers, fields)
+- Master-detail grids for receivers/history
+
+## Common Mistakes (DO NOT REPEAT)
+
+| Mistake | Why Wrong |
+|---------|-----------|
+| Using iText7 in receiver pages | GPL license issue. Use PDF.js overlays. |
+| Using PSPDFKit | Removed from architecture. Use PDF.js + DevExpress. |
+| `@rendermode InteractiveWebAssembly` on PDF viewers | DevExpress DxPdfViewer requires server-side rendering. |
+| Hardcoded quality in PDF.js | Use `appsettings.json` `PdfViewerOptions`. |
+| Coordinates in points/pixels for DB | Database uses INCHES. Convert before save. |
+| `BottomMarginBand` for signatures | Repeats on every page. Use `DetailBand`. |
+
+## Testing
+
+**No automated tests exist yet.**
+
+Manual testing workflow:
+1. Start API (`dotnet run` in `EnvelopeGenerator.API`)
+2. Start WebUI (`dotnet run` in `EnvelopeGenerator.WebUI\EnvelopeGenerator.WebUI`)
+3. Navigate to `https://localhost:5131` (or check console output for port)
+4. Test sender login at `/sender/login`
+5. Test receiver flow at `/envelope/login/{envelopeKey}`
+
+## Database
+
+**SQL Server** (DD_ECM)
+- Connection string in `API/appsettings.json`
+- EF Core migrations NOT used (manual SQL scripts)
+- Stored procedures: `PRSIG_*` prefix
+
+**Key Tables:**
+- `TBSIG_ENVELOPE` - Envelope metadata
+- `TBSIG_ENVELOPE_RECEIVER` - Receiver assignments
+- `TBSIG_DOC_RECEIVER_ELEMENT` - Signature fields (X, Y in INCHES)
+- `TBSIG_RECEIVER` - Receiver registry
+- `TBSIG_DOCUMENT` - PDF binary data
+- `TBSIG_ENVELOPE_HISTORY` - Audit trail
+
+## DevExpress
+
+**License:** Commercial (v25.2.3)
+**Components Used:**
+- `DxGrid` - Master-detail grids
+- `DxPdfViewer` - Server-side PDF rendering
+- `DxPopup` - Modal dialogs
+- `DxToolbar` - Action bars
+- `DxFormLayout` - Forms
+
+**Theme:** Blazing Berry (default)
+
+## JavaScript Interop
+
+**PDF Viewer:** `wwwroot/js/pdf-viewer.js`
+```javascript
+window.pdfViewer = {
+    initialize(canvasId, pdfDataUrl, dotNetRef),
+    renderPage(num),
+    renderSignatureButtons(signatures, pageNum, dotNetRef),
+    applySignature(signatureId, dataUrl, fullName, position, place),
+    zoomIn(), zoomOut(), dispose()
+}
+```
+
+**Signature Pad:** `wwwroot/js/receiver-signature.js`
+```javascript
+window.receiverSignature = {
+    initializeDrawPad(canvasId, dotNetRef),
+    getSignatureDataUrl(canvasId),
+    clearPad(canvasId)
+}
+```
+
+## Multi-Envelope Support
+
+Receivers can login to **multiple envelopes simultaneously** via per-envelope cookies:
+```
+AuthTokenSignFLOWReceiver.{envelopeKey}
+```
+
+Each envelope maintains independent authentication state.
+
+## External Dependencies
+
+**CDN:**
+- PDF.js 3.11.174: `https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js`
+
+**NuGet (WebUI.Client):**
+- `DevExpress.Blazor.*` 25.2.3
+- `SkiaSharp.*` 3.119.1 (WASM rendering)
+
+**External Services:**
+- LDAP/AD authentication (optional)
+- GTX Messaging (SMS 2FA)
+- Email dispatcher (signFlow)
+
+## Environment Variables
+
+None required. All config in `appsettings.json`.
+
+**Local dev ports:**
+- API: `https://localhost:8088`
+- WebUI: `https://localhost:5131` or `http://localhost:7192`

COPILOT_CONTEXT.md

@@ -1,72 +1,107 @@
-# EnvelopeGenerator — AI Context Reference
+# EnvelopeGenerator — AI Context Reference
 
 ## Purpose
-Digital document signing system with **unified Blazor WASM frontend** for both Senders and Receivers. Senders create envelopes and place signature fields. Receivers view PDFs, sign documents, export stamped PDFs.
+Digital document signing system with **unified Blazor Auto (Server+WASM hybrid) frontend** for both Senders and Receivers. Senders create envelopes and place signature fields. Receivers view PDFs, sign documents, export stamped PDFs.
 
 **Primary Libraries:** DevExpress + PDF.js (PSPDFKit removed)
 
 ---
 
+## Migration Notice
+
+**EnvelopeGenerator.ReceiverUI ? EnvelopeGenerator.WebUI Migration**
+
+The project has been migrated from pure Blazor WebAssembly (`ReceiverUI`) to **Blazor Auto (Server+WASM hybrid)** architecture (`WebUI`) to resolve DevExpress `DxPdfViewer` compatibility issues.
+
+**Reason:** DevExpress `DxPdfViewer` requires backend server-side rendering services that are NOT available in pure WebAssembly projects.
+
+**New Structure:**
+- **WebUI** (Server project): Hosts server-side components, YARP proxy, DevExpress backend services
+- **WebUI.Client** (WASM project): Client-side components, business logic, services
+
+**Migration Details:** See `MIGRATION_CONTEXT.md`
+
+---
+
 ## Deployment Architecture
 
 **Two Presentation Projects (Both Required):**
 
 1. **EnvelopeGenerator.API** (ASP.NET Core Web API)
    - Runs independently (development & production)
-   - **YARP Reverse Proxy** configured via `yarp.json`
-   - Proxies requests to:
-     - `EnvelopeGenerator.ReceiverUI` (Blazor WASM)
-     - External Auth.API service
-   - Serves as single entry point for all requests
+   - Backend services for document management, authentication, signature endpoints
+   - Serves as API endpoint for WebUI
 
-2. **EnvelopeGenerator.ReceiverUI** (Blazor WebAssembly)
-   - Runs on separate host/port
-   - Accessed **only through API proxy** (not directly)
-   - Serves static files (HTML, JS, CSS, WASM)
+2. **EnvelopeGenerator.WebUI** (Blazor Auto - Server+WASM Hybrid)
+   - **Server Project (`EnvelopeGenerator.WebUI`):**
+     - **YARP Reverse Proxy** configured via `yarp.json`
+     - Proxies `/api/*` requests to `API:8088`
+     - Hosts server-side components (`@rendermode InteractiveServer`)
+     - DevExpress server-side services (DxPdfViewer backend)
+   - **Client Project (`EnvelopeGenerator.WebUI.Client`):**
+     - Client-side components (`@rendermode InteractiveWebAssembly`)
+     - Business logic services (AuthService, DocumentService, etc.)
+     - WASM runtime
 
 **Request Flow:**
 ```
-Client ? API:8088 (YARP Proxy) ? ReceiverUI:52936 (Blazor WASM)
-                                ? Auth.API:9090 (External Auth Service)
+Client ? WebUI:XXXX (Blazor Auto)
+            ?? Server-side Pages (DxPdfViewer)
+            ?? Client-side Pages (WASM)
+            ?? YARP Proxy: /api/* ? API:8088
 ```
 
-**Configuration:** `EnvelopeGenerator.API/yarp.json`
+**Configuration:** `EnvelopeGenerator.WebUI/yarp.json`
 
 ---
 
-## ReceiverUI Route Structure
+## WebUI Route Structure
 
 ### Root Route
-| Route | File | Purpose |
-|---|---|---|
-| `/` | `Index.razor` | Application entry point (landing page). | 
+| Route | File | Location | Render Mode |
+|---|---|---|---|
+| `/` | `Index.razor` | `WebUI.Client/Pages/` | `@rendermode InteractiveWebAssembly` |
 
 ### Sender Routes
-| Route | File | Purpose |
-|---|---|---|
-| `/sender/login` | `LoginSenderPage.razor` | Username/password authentication |
-| `/sender` | `EnvelopeSenderPage.razor` | Sender dashboard (envelope list) |
+| Route | File | Location | Render Mode |
+|---|---|---|---|
+| `/sender/login` | `LoginSenderPage.razor` | `WebUI.Client/Pages/` | `@rendermode InteractiveWebAssembly` |
+| `/sender` | `EnvelopeSenderPage.razor` | `WebUI.Client/Pages/` | `@rendermode InteractiveWebAssembly` |
 
-### Receiver Routes
-| Route | File | Purpose |
-|---|---|---|
-| `/envelope/login/{EnvelopeKey}` | `LoginReceiverPage.razor` | Access code authentication for specific envelope |
-| `/envelope/{EnvelopeKey}` | `EnvelopeReceiverPage.razor` | View & sign envelope (PDF.js viewer) |
+### Receiver Routes (PDF Viewers)
+| Route | File | Location | Render Mode |
+|---|---|---|---|
+| `/envelope/login/{EnvelopeKey}` | `LoginReceiverPage.razor` | `WebUI.Client/Pages/` | `@rendermode InteractiveWebAssembly` |
+| `/envelope/{EnvelopeKey}` | `EnvelopeReceiverPage.razor` | `WebUI/Components/Pages/` | `@rendermode InteractiveServer` |
+| `/envelope/DxPdfViewer` | `EnvelopeReceiverPage_DxPdfViewer.razor` | `WebUI/Components/Pages/` | `@rendermode InteractiveServer` |
+| `/envelope/{EnvelopeKey}/DxReportViewer` | `EnvelopeReceiverPage_DxReportViewer.razor` | `WebUI/Components/Pages/` | `@rendermode InteractiveServer` |
+| `/envelope/Embed` | `EnvelopeReceiverPage_embed.razor` | `WebUI/Components/Pages/` | `@rendermode InteractiveServer` |
 
 **Multi-Envelope Support:** Receivers can login to multiple envelopes simultaneously (per-envelope cookie authentication).
 
+**Render Mode Strategy:**
+- **Client-side Pages (WASM):** Login, Sender dashboard, Index (no DevExpress backend required)
+- **Server-side Pages (Server):** PDF viewers (DevExpress DxPdfViewer requires backend)
+
 ---
 
 ## Architecture Evolution
 
-### Old Architecture (Deprecated)
+### Old Architecture (Deprecated v1)
 - **Sender UI:** `EnvelopeGenerator.Web` (Razor Pages + PSPDFKit)
-- **Receiver UI:** `EnvelopeGenerator.ReceiverUI` (Blazor WASM + PDF.js)
+- **Receiver UI:** Separate project
 - **Backend:** `EnvelopeGenerator.API`
 
-### Current Architecture
-- **Unified Frontend:** `EnvelopeGenerator.ReceiverUI` (Blazor WASM) — **Both Senders & Receivers**
-- **Backend:** `EnvelopeGenerator.API` — **Both Senders & Receivers**
+### Intermediate Architecture (Deprecated v2)
+- **Unified Frontend:** `EnvelopeGenerator.ReceiverUI` (Pure Blazor WASM)
+- **Backend:** `EnvelopeGenerator.API`
+- **Issue:** DevExpress `DxPdfViewer` displayed blank screen (no backend services in WASM)
+
+### Current Architecture (Active)
+- **Frontend:** `EnvelopeGenerator.WebUI` (Blazor Auto - Server+WASM Hybrid)
+  - **WebUI** (Server): Server-side components, YARP proxy, DevExpress backend
+  - **WebUI.Client** (WASM): Client-side components, services, business logic
+- **Backend:** `EnvelopeGenerator.API`
 - **Libraries:** DevExpress + PDF.js
 - **PSPDFKit:** **REMOVED**
 
@@ -77,101 +112,51 @@ Client ? API:8088 (YARP Proxy) ? ReceiverUI:52936 (Blazor WASM)
 | Project | Target | Purpose |
 |---|---|---|
 | `EnvelopeGenerator.API` | net8.0 | ASP.NET Core Web API. Backend for **both Senders & Receivers**. Auth, PDF serving, signature endpoints. |
-| `EnvelopeGenerator.ReceiverUI` | net8.0 WASM | **Unified Blazor WebAssembly Frontend**. UI for **both Senders & Receivers**. YARP proxy to API. |
+| `EnvelopeGenerator.WebUI` | net8.0 | **Blazor Auto Server Project**. YARP proxy, server-side components, DevExpress backend services. |
+| `EnvelopeGenerator.WebUI.Client` | net8.0 WASM | **Blazor Auto Client Project**. Client-side components, services, business logic. |
+| `EnvelopeGenerator.ReceiverUI` | net8.0 WASM | **DEPRECATED.** Pure Blazor WASM (migrated to WebUI). |
 | `EnvelopeGenerator.Web` | net7/8/9 | **DEPRECATED.** Legacy Razor Pages (Sender UI). No longer used. |
 | `EnvelopeGenerator.Application` | multi | MediatR CQRS handlers. Business logic. |
 | `EnvelopeGenerator.Domain` | multi | Domain models, constants, interfaces. |
 | `EnvelopeGenerator.Infrastructure` | multi | EF Core repos, DB context. |
-| `EnvelopeGenerator.PdfEditor` | multi | iText7 utilities (NOT used in ReceiverUI). |
+| `EnvelopeGenerator.PdfEditor` | multi | iText7 utilities (NOT used in WebUI). |
 | `EnvelopeGenerator.DependencyInjection` | multi | DI registration helpers. |
 | **VB.NET projects** (Service/Form/BBTests) | net462 | **Legacy. Do NOT touch.** |
 
 ---
 
-## Localization & Culture Management
-
-**Current Architecture:** Blazor WebAssembly (client-side culture management)
-
-### Implementation Details
-
-**Culture Storage:**
-- Culture preference stored in browser's `localStorage` (key: `AppCulture`)
-- Managed by `CultureService.cs` (ReceiverUI/Services)
-- Supported cultures: `de-DE`, `en-US`, `fr-FR`
-
-**Culture Initialization:**
-- **Location:** `Program.cs` (lines 53-57)
-- Sets `CultureInfo.DefaultThreadCurrentCulture/UICulture` **before** app runs
-- **WASM-Safe:** Each user has isolated browser instance
-
-**Language Selector:**
-- **Component:** `LanguageSelector.razor` (ReceiverUI/Shared)
-- Displays flag icon + language name
-- Changes culture via `CultureService.SetCultureAsync()`
-- Navigates with `forceLoad: false` (smooth transition, no page reload)
-
-### ⚠️ MIGRATION WARNING: Blazor Server/Auto
-
-**Current approach is WASM-specific and will break in Server/Auto render modes!**
-
-**Why it breaks:**
-- `Program.cs:53-57` sets **global** `DefaultThreadCurrentCulture`
-- In Server/Auto, one app instance serves **all users**
-- User A selects German → User B sees German too (shared state)
-- Thread-safety issues and culture conflicts
-
-**Migration Checklist (when moving to Server/Auto):**
-
-1. **Remove global culture initialization** from `Program.cs` (lines 53-57)
-   - See detailed warning comment in the code
-
-2. **Add RequestLocalizationMiddleware** (Server-side approach):
-   ```csharp
-   app.UseRequestLocalization(options => {
-       options.SupportedCultures = new[] { "de-DE", "en-US", "fr-FR" };
-       options.SupportedUICultures = options.SupportedCultures;
-       options.RequestCultureProviders.Insert(0, new CookieRequestCultureProvider());
-   });
-   ```
-
-3. **OR** Use **per-circuit culture** (Blazor Server approach):
-   - Store culture in circuit-scoped service
-   - Use `CascadingParameter` to distribute to components
-   - See: https://learn.microsoft.com/aspnet/core/blazor/globalization-localization
-
-4. **Update `LanguageSelector.razor`:**
-   - Remove manual `CultureInfo.DefaultThreadCurrentCulture` assignment
-   - Use middleware/circuit culture provider instead
-
-5. **Update `CultureService.cs`:**
-   - Integrate with Server-side culture provider
-   - May need to store in cookies instead of localStorage
-
-**References:**
-- Microsoft Docs: [Blazor Globalization/Localization](https://learn.microsoft.com/aspnet/core/blazor/globalization-localization)
-- Current implementation: `Program.cs`, `CultureService.cs`, `LanguageSelector.razor`
-
----
-
 ## Key Files & Routes
 
-| File | Route/Purpose |
+### Client-Side Pages (WebUI.Client)
+| File | Route | Purpose |
+|---|---|---|
+| `WebUI.Client/Pages/Index.razor` | `/` | Application entry point (landing page). |
+| `WebUI.Client/Pages/EnvelopeSenderPage.razor` | `/sender` | Sender dashboard (envelope list). |
+| `WebUI.Client/Pages/LoginSenderPage.razor` | `/sender/login` | Sender username/password auth. |
+| `WebUI.Client/Pages/LoginReceiverPage.razor` | `/envelope/login/{EnvelopeKey}` | Receiver access code auth. |
+
+### Server-Side Pages (WebUI)
+| File | Route | Purpose |
+|---|---|---|
+| `WebUI/Components/Pages/EnvelopeReceiverPage.razor` | `/envelope/{key}` | Receiver PDF viewer & signing (PDF.js). |
+| `WebUI/Components/Pages/EnvelopeReceiverPage_DxPdfViewer.razor` | `/envelope/DxPdfViewer` | DevExpress PDF Viewer (test page). |
+| `WebUI/Components/Pages/EnvelopeReceiverPage_DxReportViewer.razor` | `/envelope/{key}/DxReportViewer` | DevExpress Report Viewer. |
+| `WebUI/Components/Pages/EnvelopeReceiverPage_embed.razor` | `/envelope/Embed` | Embedded PDF viewer (iframe). |
+
+### Services & Assets
+| File | Purpose |
 |---|---|
-| `ReceiverUI/Pages/Index.razor` | `/` — Application entry point (landing page). |
-| `ReceiverUI/Pages/EnvelopeSenderPage.razor` | `/sender` — Sender dashboard (envelope list). |
-| `ReceiverUI/Pages/EnvelopeReceiverPage.razor` | `/envelope/{key}` — Receiver PDF viewer & signing. |
-| `ReceiverUI/Pages/LoginSenderPage.razor` | `/sender/login` — Sender username/password auth. |
-| `ReceiverUI/Pages/LoginReceiverPage.razor` | `/envelope/login/{EnvelopeKey}` — Receiver access code auth. |
-| `ReceiverUI/wwwroot/js/pdf-viewer.js` | PDF.js wrapper (zoom, pagination, thumbnails). |
-| `ReceiverUI/wwwroot/js/receiver-signature.js` | Signature pad (draw/type/image). |
-| `ReceiverUI/wwwroot/css/envelope-viewer.css` | EnvelopeViewer styles. |
-| `ReceiverUI/Services/AuthService.cs` | Receiver + Sender authentication. |
-| `ReceiverUI/Services/SignatureCacheService.cs` | Signature caching (Redis/SQL). |
+| `WebUI.Client/Services/AuthService.cs` | Receiver + Sender authentication. |
+| `WebUI.Client/Services/SignatureCacheService.cs` | Signature caching (Redis/SQL). |
+| `WebUI.Client/Services/DocumentService.cs` | PDF document retrieval. |
+| `WebUI/wwwroot/js/pdf-viewer.js` | PDF.js wrapper (zoom, pagination, thumbnails). |
+| `WebUI/wwwroot/js/receiver-signature.js` | Signature pad (draw/type/image). |
+| `WebUI/wwwroot/css/envelope-viewer.css` | EnvelopeViewer styles. |
 | `API/Controllers/CacheController.cs` | Signature cache endpoints. |
 
 ---
 
-## Coordinate System — CRITICAL
+## Coordinate System — CRITICAL
 
 **Database Format:** INCHES (GdPicture14 native)  
 **Origin:** Top-left corner  
@@ -200,11 +185,11 @@ Client ? API:8088 (YARP Proxy) ? ReceiverUI:52936 (Blazor WASM)
 
 ---
 
-## EnvelopeReceiver — PDF.js Viewer & Signing
+## EnvelopeReceiver — PDF.js Viewer & Signing
 
 **Route:** `/envelope/{EnvelopeKey}`  
-**Tech:** PDF.js 3.11.174 + Blazor WASM + configurable quality  
-**File:** `ReceiverUI/Pages/EnvelopeReceiverPage.razor`
+**Tech:** PDF.js 3.11.174 + Blazor Server (`@rendermode InteractiveServer`) + configurable quality  
+**File:** `WebUI/Components/Pages/EnvelopeReceiverPage.razor`
 
 ### Key Features
 1. HiDPI/Retina support (4x quality)
@@ -215,7 +200,7 @@ Client ? API:8088 (YARP Proxy) ? ReceiverUI:52936 (Blazor WASM)
 6. Responsive (desktop/mobile)
 
 ### Configuration
-**File:** `ReceiverUI/wwwroot/appsettings.json`
+**File:** `WebUI/wwwroot/appsettings.json`
 
 ```json
 {
@@ -229,7 +214,7 @@ Client ? API:8088 (YARP Proxy) ? ReceiverUI:52936 (Blazor WASM)
 ```
 
 ### JavaScript API
-**File:** `ReceiverUI/wwwroot/js/pdf-viewer.js`
+**File:** `WebUI/wwwroot/js/pdf-viewer.js`
 
 ```javascript
 window.pdfViewer = {
@@ -243,7 +228,7 @@ window.pdfViewer = {
 
 ---
 
-## Signature Workflow — EnvelopeReceiver
+## Signature Workflow — EnvelopeReceiver
 
 **IMPORTANT:** iText7 NOT used (GPL license issue). Client-side overlay system only.
 
@@ -276,7 +261,7 @@ window.pdfViewer = {
    - Session state: `_capturedSignature` (lost on refresh)
 
 ### Data Model
-**File:** `ReceiverUI/Models/SignatureCaptureDto.cs`
+**File:** `WebUI.Client/Models/SignatureCaptureDto.cs`
 
 ```csharp
 public sealed record SignatureCaptureDto {
@@ -296,9 +281,9 @@ public sealed record SignatureCaptureDto {
 ### API Endpoints
 **Controller:** `API/Controllers/CacheController.cs`
 
-- `POST /api/Cache/SignatureCapture/{envelopeKey}` — Save
-- `GET /api/Cache/SignatureCapture/{envelopeKey}` — Load
-- `DELETE /api/Cache/SignatureCapture/{envelopeKey}` — Delete
+- `POST /api/Cache/SignatureCapture/{envelopeKey}` — Save
+- `GET /api/Cache/SignatureCapture/{envelopeKey}` — Load
+- `DELETE /api/Cache/SignatureCapture/{envelopeKey}` — Delete
 
 **Cache Key Format:**
 ```
@@ -315,7 +300,7 @@ signature:91751687-8ae6-4777-bf5f-b8846085e62e:{envelopeKey}
 ```
 
 ### Service
-**File:** `ReceiverUI/Services/SignatureCacheService.cs`
+**File:** `WebUI.Client/Services/SignatureCacheService.cs`
 
 ```csharp
 public class SignatureCacheService {
@@ -332,11 +317,11 @@ public class SignatureCacheService {
 ## Sender Login
 
 **Route:** `/sender/login`  
-**File:** `ReceiverUI/Pages/LoginSenderPage.razor`  
+**File:** `WebUI.Client/Pages/LoginSenderPage.razor`  
 **Tech:** Bootstrap 5 + DevExpress Blazing Berry theme
 
 ### AuthService Extension
-**File:** `ReceiverUI/Services/AuthService.cs`
+**File:** `WebUI.Client/Services/AuthService.cs`
 
 ```csharp
 public enum SenderLoginResult { Success, InvalidCredentials, Error }
@@ -364,7 +349,7 @@ public async Task<SenderLoginResult> LoginSenderAsync(string username, string pa
 
 **Response:**
 - `200 OK` ? Cookie set, redirect to `/sender`
-- `401 Unauthorized` ? Show error: "Ungültige Anmeldedaten"
+- `401 Unauthorized` ? Show error: "Ungültige Anmeldedaten"
 - Other ? Show error: "Serverfehler"
 
 **Cookie:** HTTP-only, Secure (HTTPS), SameSite=Strict
@@ -381,7 +366,7 @@ public async Task<SenderLoginResult> LoginSenderAsync(string username, string pa
 ## Receiver Login
 
 **Route:** `/envelope/login/{EnvelopeKey}`  
-**File:** `ReceiverUI/Pages/LoginReceiverPage.razor`
+**File:** `WebUI.Client/Pages/LoginReceiverPage.razor`
 
 **Multi-Envelope Support:** Cookies are stored per-envelope (e.g., `AuthTokenSignFLOWReceiver.{envelopeKey}`), allowing simultaneous authentication for multiple envelopes in the same browser session.
 
@@ -409,7 +394,7 @@ public async Task<EnvelopeLoginResult> LoginEnvelopeReceiverAsync(string key, st
 
 ---
 
-## NuGet Packages (ReceiverUI)
+## NuGet Packages (WebUI.Client)
 
 | Package | Version | Purpose |
 |---|---|---|
@@ -422,7 +407,7 @@ public async Task<EnvelopeLoginResult> LoginEnvelopeReceiverAsync(string key, st
 
 ---
 
-## Mistakes History — Do NOT Repeat
+## Mistakes History — Do NOT Repeat
 
 | Mistake | Why Wrong |
 |---|---|
@@ -441,8 +426,9 @@ public async Task<EnvelopeLoginResult> LoginEnvelopeReceiverAsync(string key, st
 
 ### Deprecated Projects
 **DO NOT USE:**
-- `EnvelopeGenerator.Web` (Razor Pages) — Replaced by unified ReceiverUI
-- PSPDFKit — Removed, use PDF.js + DevExpress instead
+- `EnvelopeGenerator.ReceiverUI` (Pure Blazor WASM) — Migrated to WebUI (DevExpress compatibility issue)
+- `EnvelopeGenerator.Web` (Razor Pages) — Replaced by unified WebUI
+- PSPDFKit — Removed, use PDF.js + DevExpress instead
 
 ### Legacy Projects (VB.NET)
 **DO NOT TOUCH:** `EnvelopeGenerator.Service`, `EnvelopeGenerator.Form`, `EnvelopeGenerator.BBTests`
@@ -467,8 +453,8 @@ Proves database uses INCHES natively.
 ## Quick Reference
 
 ### When working with coordinates:
-1. **Database ? UI:** INCHES × 72 = PDF Points
-2. **UI ? Display:** Points × scale = Pixels
+1. **Database ? UI:** INCHES × 72 = PDF Points
+2. **UI ? Display:** Points × scale = Pixels
 3. **iText7 stamping:** Flip Y-axis (top-down ? bottom-up)
 
 ### When adding features:
@@ -476,14 +462,16 @@ Proves database uses INCHES natively.
 2. Prefer simplicity over complexity
 3. Use `appsettings.json` for configuration
 4. Keep consistent with existing design (Bootstrap 5 + Blazing Berry)
-5. **Unified frontend:** ReceiverUI serves both Senders and Receivers
+5. **Unified frontend:** WebUI serves both Senders and Receivers
+6. **Render mode:** Client-side (WASM) for login/dashboard, Server-side for PDF viewers
 
 ### When debugging:
 1. **Coordinates:** Always check unit system (inches/points/pixels)
 2. **Authentication:** Check cookie name/domain/SameSite
 3. **Cache:** Check Redis/SQL connection + key format
-4. **Frontend confusion:** Only use ReceiverUI (Web is deprecated)
+4. **Frontend confusion:** Only use WebUI (ReceiverUI/Web are deprecated)
+5. **Blank DxPdfViewer:** Ensure page has `@rendermode InteractiveServer`
 
 ---
 
-**Last Updated:** Session 19 (Razor file naming convention + Index route proxy)
+**Last Updated:** 2025-01-27 (ReceiverUI ? WebUI migration complete)

EnvelopeGenerator.API/Controllers/AuthController.cs

@@ -40,7 +40,7 @@ public partial class AuthController(IOptions<AuthTokenKeys> authTokenKeyOptions,
     /// <response code="401">Wenn es kein zugelassenes Cookie gibt, wird „nicht zugelassen“ zurückgegeben.</response>
     [ProducesResponseType(typeof(void), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
-    [Authorize(AuthenticationSchemes = AuthScheme.Sender)]
+    [Authorize(Policy = AuthPolicy.SenderOrReceiver)]
     [HttpPost("logout")]
     public async Task<IActionResult> Logout()
     {
@@ -69,7 +69,7 @@ public partial class AuthController(IOptions<AuthTokenKeys> authTokenKeyOptions,
     [ProducesResponseType(typeof(void), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
     [HttpGet("check")]
-    [Authorize(AuthenticationSchemes = AuthScheme.Sender)]
+    [Authorize]
     public IActionResult Check(string? role = null)
         => role is not null && !User.IsInRole(role)
             ? Unauthorized()

EnvelopeGenerator.API/Controllers/ConfigController.cs

@@ -1,5 +1,4 @@
 using EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
-using EnvelopeGenerator.Domain.Constants;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Options;
@@ -14,7 +13,7 @@ namespace EnvelopeGenerator.API.Controllers;
 /// </remarks>
 [Route("api/[controller]")]
 [ApiController]
-[Authorize(Policy = AuthPolicy.SenderOrReceiver)]
+[Authorize]
 public class ConfigController(IOptionsMonitor<AnnotationParams> annotationParamsOptions) : ControllerBase
 {
     private readonly AnnotationParams _annotationParams = annotationParamsOptions.CurrentValue;

EnvelopeGenerator.API/Controllers/SignatureController.cs

@@ -15,14 +15,14 @@ namespace EnvelopeGenerator.API.Controllers;
 [Authorize(Policy = AuthPolicy.Receiver)]
 [ApiController]
 [Route("api/[controller]")]
-public class DocReceiverElementController : ControllerBase
+public class SignatureController : ControllerBase
 {
     private readonly IMediator _mediator;
 
     /// <summary>
-    /// Initializes a new instance of <see cref="DocReceiverElementController"/>.
+    /// Initializes a new instance of <see cref="SignatureController"/>.
     /// </summary>
-    public DocReceiverElementController(IMediator mediator)
+    public SignatureController(IMediator mediator)
     {
         _mediator = mediator;
     }

EnvelopeGenerator.API/EnvelopeGenerator.API.csproj

@@ -34,7 +34,6 @@
     <PackageReference Include="DigitalData.Auth.Client" Version="1.3.7" />
     <PackageReference Include="DigitalData.Core.API" Version="2.2.1" />
     <PackageReference Include="HtmlSanitizer" Version="9.0.892" />
-    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.28" />
     <PackageReference Include="Microsoft.Extensions.Caching.SqlServer" Version="8.0.11" Condition="'$(TargetFramework)' == 'net8.0'" />
     <PackageReference Include="itext" Version="8.0.5" />
     <PackageReference Include="itext.bouncy-castle-adapter" Version="8.0.5" />

EnvelopeGenerator.API/Program.cs

@@ -13,6 +13,7 @@ using EnvelopeGenerator.Application;
 using DigitalData.Auth.Client;
 using DigitalData.Core.Abstractions;
 using EnvelopeGenerator.API.Models;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.IdentityModel.Tokens;
 using DigitalData.Core.Abstractions.Security.Extensions;
 using EnvelopeGenerator.API.Middleware;
@@ -21,7 +22,6 @@ using NLog.Web;
 using NLog;
 using DigitalData.Auth.Claims;
 using EnvelopeGenerator.API;
-using Microsoft.AspNetCore.Authentication.JwtBearer;
 
 var logger = LogManager.Setup().LoadConfigurationFromAppSettings().GetCurrentClassLogger();
 logger.Info("Logging initialized!");
@@ -44,11 +44,7 @@ try
 
     var deferredProvider = new DeferredServiceProvider();
 
-    builder.Services.AddControllers()
-        .AddJsonOptions(options =>
-        {
-            options.JsonSerializerOptions.ReferenceHandler = System.Text.Json.Serialization.ReferenceHandler.IgnoreCycles;
-        });
+    builder.Services.AddControllers();
     builder.Services.AddHttpClient();
     builder.Services.AddReverseProxy().LoadFromConfig(builder.Configuration.GetSection("ReverseProxy"));
 
@@ -242,9 +238,8 @@ try
     });
 
     builder.Services.AddAuthorizationBuilder()
-        .AddPolicy(AuthPolicy.SenderOrReceiver, policy => policy
-            .RequireRole(Role.Sender, Role.Receiver.Full)
-            .AddAuthenticationSchemes(AuthScheme.Sender, AuthScheme.Receiver))
+        .AddPolicy(AuthPolicy.SenderOrReceiver, policy => policy.RequireRole(Role.Sender, Role.Receiver.Full))
+
         .AddPolicy(AuthPolicy.Sender, policy => policy
             .RequireRole(Role.Sender)
             .AddAuthenticationSchemes(AuthScheme.Sender))

EnvelopeGenerator.API/Properties/launchSettings.json

@@ -22,8 +22,8 @@
     "https": {
       "commandName": "Project",
       "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "launchUrl": "sender",
+      "launchBrowser": false,
+      "launchUrl": "swagger",
       "applicationUrl": "https://localhost:8088;http://localhost:5131",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"

EnvelopeGenerator.Application/Common/Dto/ConfigDto.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Data Transfer Object representing configuration settings.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class ConfigDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/DocReceiverElementDto.cs

@@ -1,11 +1,14 @@
 using EnvelopeGenerator.Domain.Constants;
 using EnvelopeGenerator.Domain.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Data Transfer Object representing a positioned element assigned to a document receiver.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class DocReceiverElementDto : IDocReceiverElement
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/DocumentDto.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Data Transfer Object representing a document within an envelope, including optional binary data and form elements.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class DocumentDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/DocumentStatusDto.cs

@@ -1,10 +1,12 @@
 using EnvelopeGenerator.Domain.Constants;
+using Microsoft.AspNetCore.Mvc;
 
 namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Data Transfer Object representing the status of a document for a specific receiver.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class DocumentStatusDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/EnvelopeDto.cs

@@ -1,14 +1,19 @@
 using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
 using DigitalData.UserManager.Application.DTOs.User;
 using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
+using EnvelopeGenerator.Application.Common.Dto.Receiver;
 using EnvelopeGenerator.Domain.Constants;
 using EnvelopeGenerator.Domain.Entities;
 using EnvelopeGenerator.Domain.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+using System.Text.Json.Serialization;
+
 namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record EnvelopeDto : IEnvelope
 {
 	/// <summary>
@@ -128,5 +133,5 @@ public record EnvelopeDto : IEnvelope
     /// <summary>
     /// 
     /// </summary>
-    public IEnumerable<EnvelopeReceiverDto>? EnvelopeReceivers { get; set; }
+    public IEnumerable<ReceiverDto>? Receivers { get; set; }
 }

EnvelopeGenerator.Application/Common/Dto/EnvelopeReceiver/EnvelopeReceiverDto.cs

@@ -1,11 +1,13 @@
 using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
 using EnvelopeGenerator.Application.Common.Dto.Receiver;
+using Microsoft.AspNetCore.Mvc;
 
 namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
 
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record EnvelopeReceiverDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/EnvelopeReceiver/EnvelopeReceiverSecretDto.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
 
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record EnvelopeReceiverSecretDto : EnvelopeReceiverDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/EnvelopeReceiverReadOnly/EnvelopeReceiverReadOnlyCreateDto.cs

@@ -1,4 +1,5 @@
-using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
 using System.Text.Json.Serialization;
 
 namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
@@ -7,6 +8,7 @@ namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
 /// 
 /// </summary>
 /// <param name="DateValid"></param>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record EnvelopeReceiverReadOnlyCreateDto(
     DateTime DateValid)
 {

EnvelopeGenerator.Application/Common/Dto/EnvelopeReceiverReadOnly/EnvelopeReceiverReadOnlyDto.cs

@@ -1,4 +1,6 @@
-using EnvelopeGenerator.Application.Common.Dto.Receiver;
+using EnvelopeGenerator.Application.Common.Dto;
+using EnvelopeGenerator.Application.Common.Dto.Receiver;
+using Microsoft.AspNetCore.Mvc;
 
 namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
 
@@ -6,6 +8,7 @@ namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
 /// Represents a read-only Data Transfer Object (DTO) for an envelope receiver.
 /// Contains information about the receiver, associated envelope, and audit details.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class EnvelopeReceiverReadOnlyDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/EnvelopeReceiverReadOnly/EnvelopeReceiverReadOnlyUpdateDto.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
 
 /// <summary>
 /// Data Transfer Object for updating a read-only envelope receiver.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class EnvelopeReceiverReadOnlyUpdateDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/EnvelopeTypeDto.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Data Transfer Object representing a type of envelope with its configuration settings.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class EnvelopeTypeDto
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/MappingProfile.cs

@@ -7,9 +7,7 @@ using EnvelopeGenerator.Application.Common.Dto.Receiver;
 using EnvelopeGenerator.Application.Common.Extensions;
 using EnvelopeGenerator.Domain.Entities;
 
-using EnvelopeGenerator.Application.Common.Dto;
-
-namespace EnvelopeGenerator.Application.Common;
+namespace EnvelopeGenerator.Application.Common.Dto;
 
 /// <summary>
 /// Represents the AutoMapper profile configuration for mapping between
@@ -28,15 +26,15 @@ public class MappingProfile : Profile
         CreateMap<DocReceiverElement, DocReceiverElementDto>();
         CreateMap<DocumentStatus, DocumentStatusDto>();
         CreateMap<EmailTemplate, EmailTemplateDto>();
-        CreateMap<Envelope, EnvelopeDto>();
+        CreateMap<Envelope, EnvelopeDto>().ForMember(dest => dest.Receivers, opt => opt.MapFrom(src => src.EnvelopeReceivers.Select(er => er.Receiver)));
         CreateMap<Document, DocumentDto>();
-        CreateMap<History, HistoryDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
-        CreateMap<History, HistoryCreateDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
-        CreateMap<EnvelopeReceiver, EnvelopeReceiverDto>();
-        CreateMap<EnvelopeReceiver, EnvelopeReceiverSecretDto>();
+        CreateMap<Domain.Entities.History, HistoryDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
+        CreateMap<Domain.Entities.History, HistoryCreateDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
+        CreateMap<Domain.Entities.EnvelopeReceiver, EnvelopeReceiverDto>();
+        CreateMap<Domain.Entities.EnvelopeReceiver, EnvelopeReceiverSecretDto>();
         CreateMap<EnvelopeType, EnvelopeTypeDto>();
-        CreateMap<Receiver, ReceiverDto>();
-        CreateMap<EnvelopeReceiverReadOnly, EnvelopeReceiverReadOnlyDto>();
+        CreateMap<Domain.Entities.Receiver, ReceiverDto>();
+        CreateMap<Domain.Entities.EnvelopeReceiverReadOnly, EnvelopeReceiverReadOnlyDto>();
         CreateMap<ElementAnnotation, AnnotationDto>();
 
         // DTO to Entity mappings
@@ -49,13 +47,13 @@ public class MappingProfile : Profile
         CreateMap<EmailTemplateDto, EmailTemplate>();
         CreateMap<EnvelopeDto, Envelope>();
         CreateMap<DocumentDto, Document>();
-        CreateMap<HistoryDto, History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
-        CreateMap<HistoryCreateDto, History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
-        CreateMap<EnvelopeReceiverDto, EnvelopeReceiver>();
+        CreateMap<HistoryDto, Domain.Entities.History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
+        CreateMap<HistoryCreateDto, Domain.Entities.History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
+        CreateMap<EnvelopeReceiverDto, Domain.Entities.EnvelopeReceiver>();
         CreateMap<EnvelopeTypeDto, EnvelopeType>();
-        CreateMap<ReceiverDto, Receiver>().ForMember(rcv => rcv.EnvelopeReceivers, rcvReadDto => rcvReadDto.Ignore());
-        CreateMap<EnvelopeReceiverReadOnlyCreateDto, EnvelopeReceiverReadOnly>();
-        CreateMap<EnvelopeReceiverReadOnlyUpdateDto, EnvelopeReceiverReadOnly>();
+        CreateMap<ReceiverDto, Domain.Entities.Receiver>().ForMember(rcv => rcv.EnvelopeReceivers, rcvReadDto => rcvReadDto.Ignore());
+        CreateMap<EnvelopeReceiverReadOnlyCreateDto, Domain.Entities.EnvelopeReceiverReadOnly>();
+        CreateMap<EnvelopeReceiverReadOnlyUpdateDto, Domain.Entities.EnvelopeReceiverReadOnly>();
         CreateMap<AnnotationCreateDto, ElementAnnotation>()
             .MapAddedWhen();
 

EnvelopeGenerator.Application/Common/Dto/Messaging/GtxMessagingResponse.cs

@@ -1,6 +1,9 @@
-namespace EnvelopeGenerator.Application.Common.Dto.Messaging;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto.Messaging;
 
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class GtxMessagingResponse : Dictionary<string, object?> { }

EnvelopeGenerator.Application/Common/Dto/Messaging/SmsResponse.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Common.Dto.Messaging;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Common.Dto.Messaging;
 
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record SmsResponse
 {
     /// <summary>

EnvelopeGenerator.Application/Common/Dto/Receiver/ReceiverDto.cs

@@ -1,4 +1,5 @@
 using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
+using Microsoft.AspNetCore.Mvc;
 using System.Text.Json.Serialization;
 
 namespace EnvelopeGenerator.Application.Common.Dto.Receiver;
@@ -6,6 +7,7 @@ namespace EnvelopeGenerator.Application.Common.Dto.Receiver;
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class ReceiverDto
 {
     /// <summary>

EnvelopeGenerator.Application/DependencyInjection.cs

@@ -51,8 +51,8 @@ public static class DependencyInjection
         services.Configure<TotpSmsParams>(config.GetSection(nameof(TotpSmsParams)));
 
         services.AddHttpClientService<GtxMessagingParams>(config.GetSection(nameof(GtxMessagingParams)));
-        services.TryAddSingleton<ISmsSender, GTXSmsSender>();
-        services.TryAddSingleton<IEnvelopeSmsHandler, EnvelopeSmsHandler>();
+        services.TryAddScoped<ISmsSender, GTXSmsSender>();          // Changed: Singleton → Scoped
+        services.TryAddScoped<IEnvelopeSmsHandler, EnvelopeSmsHandler>(); // Changed: Singleton → Scoped
         services.TryAddSingleton<IAuthenticator, Authenticator>();
         services.TryAddSingleton<QRCodeGenerator>();
 

EnvelopeGenerator.Application/EnvelopeGenerator.Application.csproj

@@ -21,6 +21,7 @@
 		<PackageReference Include="DigitalData.EmailProfilerDispatcher" Version="3.1.1" />
 		<PackageReference Include="HtmlSanitizer" Version="9.0.892" />
 		<PackageReference Include="MediatR" Version="12.5.0" />
+		<PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="7.0.18" />
 		<PackageReference Include="Microsoft.Identity.Client" Version="4.82.1" />
 		<PackageReference Include="Otp.NET" Version="1.4.0" />
 		<PackageReference Include="QRCoder" Version="1.6.0" />

EnvelopeGenerator.Application/Envelopes/Queries/ReadEnvelopeQuery.cs

@@ -14,16 +14,6 @@ namespace EnvelopeGenerator.Application.Envelopes.Queries;
 /// </summary>
 public record ReadEnvelopeQuery : EnvelopeQueryBase, IRequest<IEnumerable<EnvelopeDto>>
 {
-    /// <summary>
-    /// 
-    /// </summary>
-    public bool OnlyActive { get; init; } = false;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public bool OnlyCompleted { get; init; } = false;
-
     /// <summary>
     /// Abfrage des Include des Umschlags
     /// </summary>
@@ -142,12 +132,6 @@ public class ReadEnvelopeQueryHandler : IRequestHandler<ReadEnvelopeQuery, IEnum
                 query = query.Where(e => !status.Ignore.Contains(e.Status));
         }
 
-        if(request is { OnlyActive: true })
-            query = query.Where(e => Status.Active.Contains(e.Status));
-
-        if (request is { OnlyCompleted: true })
-            query = query.Where(e => Status.Completed.Contains(e.Status));
-
         var envelopes = await query
             .Include(e => e.EnvelopeReceivers).ThenInclude(er => er.Receiver)
             .ToListAsync(cancel);

EnvelopeGenerator.Application/Receivers/Commands/CreateReceiverCommand.cs

@@ -3,6 +3,7 @@ using DigitalData.Core.Abstraction.Application.Repository;
 using EnvelopeGenerator.Application.Common.Dto.Receiver;
 using EnvelopeGenerator.Domain.Entities;
 using MediatR;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
 using System.ComponentModel.DataAnnotations;
 using System.Security.Cryptography;
@@ -13,6 +14,7 @@ namespace EnvelopeGenerator.Application.Receivers.Commands;
 /// <summary>
 /// 
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public record CreateReceiverCommand : IRequest<(ReceiverDto Receiver, bool AlreadyExists)>
 {
     /// <summary>

EnvelopeGenerator.Application/Receivers/Commands/UpdateReceiverCommand.cs

@@ -1,8 +1,11 @@
-namespace EnvelopeGenerator.Application.Receivers.Commands;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Receivers.Commands;
 
 /// <summary>
 /// Data Transfer Object for updating a receiver's information.
 /// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
 public class UpdateReceiverCommand
 {
     /// <summary>

EnvelopeGenerator.Application/Resources/Resource.cs

@@ -397,412 +397,4 @@ public static class Extensions
     /// <param name="suffix"></param>
     /// <returns></returns>
     public static string LockedFooterBody(this IStringLocalizer localizer, string suffix) => localizer[nameof(LockedFooterBody) + suffix].Value;
-
-    // Sender-side UI resources
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string NewEnvelope(this IStringLocalizer localizer) => localizer[nameof(NewEnvelope)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string LoadEnvelope(this IStringLocalizer localizer) => localizer[nameof(LoadEnvelope)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string DeleteEnvelope(this IStringLocalizer localizer) => localizer[nameof(DeleteEnvelope)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string RefreshData(this IStringLocalizer localizer) => localizer[nameof(RefreshData)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string RefreshedAt(this IStringLocalizer localizer) => localizer[nameof(RefreshedAt)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ShowDocument(this IStringLocalizer localizer) => localizer[nameof(ShowDocument)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ContactReceiver(this IStringLocalizer localizer) => localizer[nameof(ContactReceiver)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string EnvelopeId(this IStringLocalizer localizer) => localizer[nameof(EnvelopeId)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string OpenLogDirectory(this IStringLocalizer localizer) => localizer[nameof(OpenLogDirectory)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ShowResultsReport(this IStringLocalizer localizer) => localizer[nameof(ShowResultsReport)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string SupportMail(this IStringLocalizer localizer) => localizer[nameof(SupportMail)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ResendInvitation(this IStringLocalizer localizer) => localizer[nameof(ResendInvitation)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Export(this IStringLocalizer localizer) => localizer[nameof(Export)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Receivers(this IStringLocalizer localizer) => localizer[nameof(Receivers)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string EmailSalutation(this IStringLocalizer localizer) => localizer[nameof(EmailSalutation)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string SignedWhen(this IStringLocalizer localizer) => localizer[nameof(SignedWhen)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string AccessCode(this IStringLocalizer localizer) => localizer[nameof(AccessCode)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string User(this IStringLocalizer localizer) => localizer[nameof(User)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Type(this IStringLocalizer localizer) => localizer[nameof(Type)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Title(this IStringLocalizer localizer) => localizer[nameof(Title)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string CreatedOn(this IStringLocalizer localizer) => localizer[nameof(CreatedOn)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string LastModified(this IStringLocalizer localizer) => localizer[nameof(LastModified)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string OpenEnvelopes(this IStringLocalizer localizer) => localizer[nameof(OpenEnvelopes)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string CompletedEnvelopes(this IStringLocalizer localizer) => localizer[nameof(CompletedEnvelopes)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string SendAccessCode(this IStringLocalizer localizer) => localizer[nameof(SendAccessCode)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string TwoFactorProperties(this IStringLocalizer localizer) => localizer[nameof(TwoFactorProperties)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Name(this IStringLocalizer localizer) => localizer[nameof(Name)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string PhoneNumber(this IStringLocalizer localizer) => localizer[nameof(PhoneNumber)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string AddReceiver(this IStringLocalizer localizer) => localizer[nameof(AddReceiver)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string DeleteReceiver(this IStringLocalizer localizer) => localizer[nameof(DeleteReceiver)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string AddFile(this IStringLocalizer localizer) => localizer[nameof(AddFile)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string MergeFiles(this IStringLocalizer localizer) => localizer[nameof(MergeFiles)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string DeleteFile(this IStringLocalizer localizer) => localizer[nameof(DeleteFile)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ShowFile(this IStringLocalizer localizer) => localizer[nameof(ShowFile)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string EditFields(this IStringLocalizer localizer) => localizer[nameof(EditFields)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string EditData(this IStringLocalizer localizer) => localizer[nameof(EditData)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Save(this IStringLocalizer localizer) => localizer[nameof(Save)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string SendEnvelope(this IStringLocalizer localizer) => localizer[nameof(SendEnvelope)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Cancel(this IStringLocalizer localizer) => localizer[nameof(Cancel)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string AddSignature(this IStringLocalizer localizer) => localizer[nameof(AddSignature)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string DeleteSignature(this IStringLocalizer localizer) => localizer[nameof(DeleteSignature)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Language(this IStringLocalizer localizer) => localizer[nameof(Language)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string UseAccessCode(this IStringLocalizer localizer) => localizer[nameof(UseAccessCode)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string TwoFactorEnabled(this IStringLocalizer localizer) => localizer[nameof(TwoFactorEnabled)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string CertificationType(this IStringLocalizer localizer) => localizer[nameof(CertificationType)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string FinalEmailToCreator(this IStringLocalizer localizer) => localizer[nameof(FinalEmailToCreator)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string FinalEmailToReceivers(this IStringLocalizer localizer) => localizer[nameof(FinalEmailToReceivers)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string SendReminderEmails(this IStringLocalizer localizer) => localizer[nameof(SendReminderEmails)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string FirstReminderDays(this IStringLocalizer localizer) => localizer[nameof(FirstReminderDays)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ReminderIntervalDays(this IStringLocalizer localizer) => localizer[nameof(ReminderIntervalDays)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ExpiresWhenDays(this IStringLocalizer localizer) => localizer[nameof(ExpiresWhenDays)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string ExpiresWarningDays(this IStringLocalizer localizer) => localizer[nameof(ExpiresWarningDays)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Message(this IStringLocalizer localizer) => localizer[nameof(Message)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string EnvelopeType(this IStringLocalizer localizer) => localizer[nameof(EnvelopeType)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string AllOptions(this IStringLocalizer localizer) => localizer[nameof(AllOptions)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string DeleteReason(this IStringLocalizer localizer) => localizer[nameof(DeleteReason)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string PleaseProvideReason(this IStringLocalizer localizer) => localizer[nameof(PleaseProvideReason)].Value;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="localizer"></param>
-    /// <returns></returns>
-    public static string Status(this IStringLocalizer localizer) => localizer[nameof(Status)].Value;
 }

EnvelopeGenerator.Application/Resources/Resource.de-DE.resx

@@ -477,178 +477,4 @@
   <data name="Confirmations" xml:space="preserve">
     <value>Bestätigungen</value>
   </data>
-  <data name="NewEnvelope" xml:space="preserve">
-    <value>Neuer Umschlag</value>
-  </data>
-  <data name="LoadEnvelope" xml:space="preserve">
-    <value>Umschlag laden</value>
-  </data>
-  <data name="DeleteEnvelope" xml:space="preserve">
-    <value>Umschlag zurückrufen/löschen</value>
-  </data>
-  <data name="RefreshData" xml:space="preserve">
-    <value>Daten Aktualisieren</value>
-  </data>
-  <data name="RefreshedAt" xml:space="preserve">
-    <value>Aktualisiert: {0}</value>
-  </data>
-  <data name="ShowDocument" xml:space="preserve">
-    <value>Dokument anzeigen</value>
-  </data>
-  <data name="ContactReceiver" xml:space="preserve">
-    <value>Empfänger kontaktieren</value>
-  </data>
-  <data name="EnvelopeId" xml:space="preserve">
-    <value>Umschlag-ID: {0}</value>
-  </data>
-  <data name="OpenLogDirectory" xml:space="preserve">
-    <value>Öffne Log Verzeichnis</value>
-  </data>
-  <data name="ShowResultsReport" xml:space="preserve">
-    <value>Ergebnisbericht anzeigen</value>
-  </data>
-  <data name="SupportMail" xml:space="preserve">
-    <value>Support Mail</value>
-  </data>
-  <data name="ResendInvitation" xml:space="preserve">
-    <value>Einladung manuell versenden</value>
-  </data>
-  <data name="Export" xml:space="preserve">
-    <value>Export</value>
-  </data>
-  <data name="Receivers" xml:space="preserve">
-    <value>Empfänger</value>
-  </data>
-  <data name="EmailSalutation" xml:space="preserve">
-    <value>Email Anrede</value>
-  </data>
-  <data name="SignedWhen" xml:space="preserve">
-    <value>Unterschrieben wann</value>
-  </data>
-  <data name="AccessCode" xml:space="preserve">
-    <value>Zugangscode</value>
-  </data>
-  <data name="User" xml:space="preserve">
-    <value>Benutzer</value>
-  </data>
-  <data name="Type" xml:space="preserve">
-    <value>Typ</value>
-  </data>
-  <data name="Title" xml:space="preserve">
-    <value>Titel</value>
-  </data>
-  <data name="CreatedOn" xml:space="preserve">
-    <value>Erstellt am</value>
-  </data>
-  <data name="LastModified" xml:space="preserve">
-    <value>Zuletzt geändert am</value>
-  </data>
-  <data name="OpenEnvelopes" xml:space="preserve">
-    <value>Offene Umschläge</value>
-  </data>
-  <data name="CompletedEnvelopes" xml:space="preserve">
-    <value>Abgeschlossene Umschläge</value>
-  </data>
-  <data name="SendAccessCode" xml:space="preserve">
-    <value>Zugangscode senden</value>
-  </data>
-  <data name="TwoFactorProperties" xml:space="preserve">
-    <value>2-Faktor Eigenschaften</value>
-  </data>
-  <data name="Name" xml:space="preserve">
-    <value>Name</value>
-  </data>
-  <data name="PhoneNumber" xml:space="preserve">
-    <value>Telefonnummer</value>
-  </data>
-  <data name="AddReceiver" xml:space="preserve">
-    <value>Empfänger hinzufügen</value>
-  </data>
-  <data name="DeleteReceiver" xml:space="preserve">
-    <value>Empfänger löschen</value>
-  </data>
-  <data name="AddFile" xml:space="preserve">
-    <value>Datei hinzufügen</value>
-  </data>
-  <data name="MergeFiles" xml:space="preserve">
-    <value>Dateien zusammenführen</value>
-  </data>
-  <data name="DeleteFile" xml:space="preserve">
-    <value>Datei löschen</value>
-  </data>
-  <data name="ShowFile" xml:space="preserve">
-    <value>Datei anzeigen</value>
-  </data>
-  <data name="EditFields" xml:space="preserve">
-    <value>Felder bearbeiten</value>
-  </data>
-  <data name="EditData" xml:space="preserve">
-    <value>Daten bearbeiten</value>
-  </data>
-  <data name="Save" xml:space="preserve">
-    <value>Speichern</value>
-  </data>
-  <data name="SendEnvelope" xml:space="preserve">
-    <value>Umschlag versenden</value>
-  </data>
-  <data name="Cancel" xml:space="preserve">
-    <value>Abbrechen</value>
-  </data>
-  <data name="AddSignature" xml:space="preserve">
-    <value>Signatur hinzufügen</value>
-  </data>
-  <data name="DeleteSignature" xml:space="preserve">
-    <value>Signatur löschen</value>
-  </data>
-  <data name="Language" xml:space="preserve">
-    <value>Sprache</value>
-  </data>
-  <data name="UseAccessCode" xml:space="preserve">
-    <value>Zugangscode verwenden</value>
-  </data>
-  <data name="TwoFactorEnabled" xml:space="preserve">
-    <value>2-Faktor-Authentifizierung aktiviert</value>
-  </data>
-  <data name="CertificationType" xml:space="preserve">
-    <value>Zertifizierungstyp</value>
-  </data>
-  <data name="FinalEmailToCreator" xml:space="preserve">
-    <value>Finale E-Mail an Ersteller</value>
-  </data>
-  <data name="FinalEmailToReceivers" xml:space="preserve">
-    <value>Finale E-Mail an Empfänger</value>
-  </data>
-  <data name="SendReminderEmails" xml:space="preserve">
-    <value>Erinnerungs-E-Mails senden</value>
-  </data>
-  <data name="FirstReminderDays" xml:space="preserve">
-    <value>Erste Erinnerung (Tage)</value>
-  </data>
-  <data name="ReminderIntervalDays" xml:space="preserve">
-    <value>Erinnerungsintervall (Tage)</value>
-  </data>
-  <data name="ExpiresWhenDays" xml:space="preserve">
-    <value>Läuft ab nach (Tage)</value>
-  </data>
-  <data name="ExpiresWarningDays" xml:space="preserve">
-    <value>Ablaufwarnung (Tage)</value>
-  </data>
-  <data name="Message" xml:space="preserve">
-    <value>Nachricht</value>
-  </data>
-  <data name="EnvelopeType" xml:space="preserve">
-    <value>Umschlagtyp</value>
-  </data>
-  <data name="AllOptions" xml:space="preserve">
-    <value>Alle Optionen</value>
-  </data>
-  <data name="DeleteReason" xml:space="preserve">
-    <value>Grund für Löschung</value>
-  </data>
-  <data name="PleaseProvideReason" xml:space="preserve">
-    <value>Bitte geben Sie einen Grund an</value>
-  </data>
-  <data name="Status" xml:space="preserve">
-    <value>Status</value>
-  </data>
 </root>

EnvelopeGenerator.Application/Resources/Resource.en-US.resx

@@ -477,178 +477,4 @@
   <data name="Confirmations" xml:space="preserve">
     <value>Confirmations</value>
   </data>
-  <data name="NewEnvelope" xml:space="preserve">
-    <value>New Envelope</value>
-  </data>
-  <data name="LoadEnvelope" xml:space="preserve">
-    <value>Load Envelope</value>
-  </data>
-  <data name="DeleteEnvelope" xml:space="preserve">
-    <value>Delete Envelope</value>
-  </data>
-  <data name="RefreshData" xml:space="preserve">
-    <value>Reload Data</value>
-  </data>
-  <data name="RefreshedAt" xml:space="preserve">
-    <value>Refreshed: {0}</value>
-  </data>
-  <data name="ShowDocument" xml:space="preserve">
-    <value>Show Document</value>
-  </data>
-  <data name="ContactReceiver" xml:space="preserve">
-    <value>Contact Receiver</value>
-  </data>
-  <data name="EnvelopeId" xml:space="preserve">
-    <value>Envelope-ID: {0}</value>
-  </data>
-  <data name="OpenLogDirectory" xml:space="preserve">
-    <value>Open Log Directory</value>
-  </data>
-  <data name="ShowResultsReport" xml:space="preserve">
-    <value>Show Results Report</value>
-  </data>
-  <data name="SupportMail" xml:space="preserve">
-    <value>Support Mail</value>
-  </data>
-  <data name="ResendInvitation" xml:space="preserve">
-    <value>Send Invitation Again</value>
-  </data>
-  <data name="Export" xml:space="preserve">
-    <value>Export</value>
-  </data>
-  <data name="Receivers" xml:space="preserve">
-    <value>Receivers</value>
-  </data>
-  <data name="EmailSalutation" xml:space="preserve">
-    <value>Email Salutation</value>
-  </data>
-  <data name="SignedWhen" xml:space="preserve">
-    <value>Signed When</value>
-  </data>
-  <data name="AccessCode" xml:space="preserve">
-    <value>Access Code</value>
-  </data>
-  <data name="User" xml:space="preserve">
-    <value>User</value>
-  </data>
-  <data name="Type" xml:space="preserve">
-    <value>Type</value>
-  </data>
-  <data name="Title" xml:space="preserve">
-    <value>Title</value>
-  </data>
-  <data name="CreatedOn" xml:space="preserve">
-    <value>Created On</value>
-  </data>
-  <data name="LastModified" xml:space="preserve">
-    <value>Last Modified</value>
-  </data>
-  <data name="OpenEnvelopes" xml:space="preserve">
-    <value>Open Envelopes</value>
-  </data>
-  <data name="CompletedEnvelopes" xml:space="preserve">
-    <value>Completed Envelopes</value>
-  </data>
-  <data name="SendAccessCode" xml:space="preserve">
-    <value>Send Access Code</value>
-  </data>
-  <data name="TwoFactorProperties" xml:space="preserve">
-    <value>2-Factor Properties</value>
-  </data>
-  <data name="Name" xml:space="preserve">
-    <value>Name</value>
-  </data>
-  <data name="PhoneNumber" xml:space="preserve">
-    <value>Phone Number</value>
-  </data>
-  <data name="AddReceiver" xml:space="preserve">
-    <value>Add Receiver</value>
-  </data>
-  <data name="DeleteReceiver" xml:space="preserve">
-    <value>Delete Receiver</value>
-  </data>
-  <data name="AddFile" xml:space="preserve">
-    <value>Add File</value>
-  </data>
-  <data name="MergeFiles" xml:space="preserve">
-    <value>Merge Files</value>
-  </data>
-  <data name="DeleteFile" xml:space="preserve">
-    <value>Delete File</value>
-  </data>
-  <data name="ShowFile" xml:space="preserve">
-    <value>Show File</value>
-  </data>
-  <data name="EditFields" xml:space="preserve">
-    <value>Edit Fields</value>
-  </data>
-  <data name="EditData" xml:space="preserve">
-    <value>Edit Data</value>
-  </data>
-  <data name="Save" xml:space="preserve">
-    <value>Save</value>
-  </data>
-  <data name="SendEnvelope" xml:space="preserve">
-    <value>Send Envelope</value>
-  </data>
-  <data name="Cancel" xml:space="preserve">
-    <value>Cancel</value>
-  </data>
-  <data name="AddSignature" xml:space="preserve">
-    <value>Add Signature</value>
-  </data>
-  <data name="DeleteSignature" xml:space="preserve">
-    <value>Delete Signature</value>
-  </data>
-  <data name="Language" xml:space="preserve">
-    <value>Language</value>
-  </data>
-  <data name="UseAccessCode" xml:space="preserve">
-    <value>Use Access Code</value>
-  </data>
-  <data name="TwoFactorEnabled" xml:space="preserve">
-    <value>2-Factor Authentication Enabled</value>
-  </data>
-  <data name="CertificationType" xml:space="preserve">
-    <value>Certification Type</value>
-  </data>
-  <data name="FinalEmailToCreator" xml:space="preserve">
-    <value>Final Email to Creator</value>
-  </data>
-  <data name="FinalEmailToReceivers" xml:space="preserve">
-    <value>Final Email to Receivers</value>
-  </data>
-  <data name="SendReminderEmails" xml:space="preserve">
-    <value>Send Reminder Emails</value>
-  </data>
-  <data name="FirstReminderDays" xml:space="preserve">
-    <value>First Reminder (Days)</value>
-  </data>
-  <data name="ReminderIntervalDays" xml:space="preserve">
-    <value>Reminder Interval (Days)</value>
-  </data>
-  <data name="ExpiresWhenDays" xml:space="preserve">
-    <value>Expires After (Days)</value>
-  </data>
-  <data name="ExpiresWarningDays" xml:space="preserve">
-    <value>Expiry Warning (Days)</value>
-  </data>
-  <data name="Message" xml:space="preserve">
-    <value>Message</value>
-  </data>
-  <data name="EnvelopeType" xml:space="preserve">
-    <value>Envelope Type</value>
-  </data>
-  <data name="AllOptions" xml:space="preserve">
-    <value>All Options</value>
-  </data>
-  <data name="DeleteReason" xml:space="preserve">
-    <value>Deletion Reason</value>
-  </data>
-  <data name="PleaseProvideReason" xml:space="preserve">
-    <value>Please provide a reason</value>
-  </data>
-  <data name="Status" xml:space="preserve">
-    <value>Status</value>
-  </data>
 </root>

EnvelopeGenerator.Application/Resources/Resource.fr-FR.resx

@@ -477,178 +477,4 @@
   <data name="Confirmations" xml:space="preserve">
     <value>Confirmations</value>
   </data>
-  <data name="NewEnvelope" xml:space="preserve">
-    <value>Nouvelle enveloppe</value>
-  </data>
-  <data name="LoadEnvelope" xml:space="preserve">
-    <value>Charger l'enveloppe</value>
-  </data>
-  <data name="DeleteEnvelope" xml:space="preserve">
-    <value>Supprimer l'enveloppe</value>
-  </data>
-  <data name="RefreshData" xml:space="preserve">
-    <value>Actualiser les données</value>
-  </data>
-  <data name="RefreshedAt" xml:space="preserve">
-    <value>Actualisé : {0}</value>
-  </data>
-  <data name="ShowDocument" xml:space="preserve">
-    <value>Afficher le document</value>
-  </data>
-  <data name="ContactReceiver" xml:space="preserve">
-    <value>Contacter le destinataire</value>
-  </data>
-  <data name="EnvelopeId" xml:space="preserve">
-    <value>ID d'enveloppe : {0}</value>
-  </data>
-  <data name="OpenLogDirectory" xml:space="preserve">
-    <value>Ouvrir le répertoire des logs</value>
-  </data>
-  <data name="ShowResultsReport" xml:space="preserve">
-    <value>Afficher le rapport de résultats</value>
-  </data>
-  <data name="SupportMail" xml:space="preserve">
-    <value>E-mail de support</value>
-  </data>
-  <data name="ResendInvitation" xml:space="preserve">
-    <value>Renvoyer l'invitation</value>
-  </data>
-  <data name="Export" xml:space="preserve">
-    <value>Exporter</value>
-  </data>
-  <data name="Receivers" xml:space="preserve">
-    <value>Destinataires</value>
-  </data>
-  <data name="EmailSalutation" xml:space="preserve">
-    <value>Formule de politesse</value>
-  </data>
-  <data name="SignedWhen" xml:space="preserve">
-    <value>Signé quand</value>
-  </data>
-  <data name="AccessCode" xml:space="preserve">
-    <value>Code d'accès</value>
-  </data>
-  <data name="User" xml:space="preserve">
-    <value>Utilisateur</value>
-  </data>
-  <data name="Type" xml:space="preserve">
-    <value>Type</value>
-  </data>
-  <data name="Title" xml:space="preserve">
-    <value>Titre</value>
-  </data>
-  <data name="CreatedOn" xml:space="preserve">
-    <value>Créé le</value>
-  </data>
-  <data name="LastModified" xml:space="preserve">
-    <value>Dernière modification</value>
-  </data>
-  <data name="OpenEnvelopes" xml:space="preserve">
-    <value>Enveloppes ouvertes</value>
-  </data>
-  <data name="CompletedEnvelopes" xml:space="preserve">
-    <value>Enveloppes terminées</value>
-  </data>
-  <data name="SendAccessCode" xml:space="preserve">
-    <value>Envoyer le code d'accès</value>
-  </data>
-  <data name="TwoFactorProperties" xml:space="preserve">
-    <value>Propriétés 2-facteurs</value>
-  </data>
-  <data name="Name" xml:space="preserve">
-    <value>Nom</value>
-  </data>
-  <data name="PhoneNumber" xml:space="preserve">
-    <value>Numéro de téléphone</value>
-  </data>
-  <data name="AddReceiver" xml:space="preserve">
-    <value>Ajouter un destinataire</value>
-  </data>
-  <data name="DeleteReceiver" xml:space="preserve">
-    <value>Supprimer le destinataire</value>
-  </data>
-  <data name="AddFile" xml:space="preserve">
-    <value>Ajouter un fichier</value>
-  </data>
-  <data name="MergeFiles" xml:space="preserve">
-    <value>Fusionner les fichiers</value>
-  </data>
-  <data name="DeleteFile" xml:space="preserve">
-    <value>Supprimer le fichier</value>
-  </data>
-  <data name="ShowFile" xml:space="preserve">
-    <value>Afficher le fichier</value>
-  </data>
-  <data name="EditFields" xml:space="preserve">
-    <value>Modifier les champs</value>
-  </data>
-  <data name="EditData" xml:space="preserve">
-    <value>Modifier les données</value>
-  </data>
-  <data name="Save" xml:space="preserve">
-    <value>Enregistrer</value>
-  </data>
-  <data name="SendEnvelope" xml:space="preserve">
-    <value>Envoyer l'enveloppe</value>
-  </data>
-  <data name="Cancel" xml:space="preserve">
-    <value>Annuler</value>
-  </data>
-  <data name="AddSignature" xml:space="preserve">
-    <value>Ajouter une signature</value>
-  </data>
-  <data name="DeleteSignature" xml:space="preserve">
-    <value>Supprimer la signature</value>
-  </data>
-  <data name="Language" xml:space="preserve">
-    <value>Langue</value>
-  </data>
-  <data name="UseAccessCode" xml:space="preserve">
-    <value>Utiliser un code d'accès</value>
-  </data>
-  <data name="TwoFactorEnabled" xml:space="preserve">
-    <value>Authentification à 2 facteurs activée</value>
-  </data>
-  <data name="CertificationType" xml:space="preserve">
-    <value>Type de certification</value>
-  </data>
-  <data name="FinalEmailToCreator" xml:space="preserve">
-    <value>E-mail final au créateur</value>
-  </data>
-  <data name="FinalEmailToReceivers" xml:space="preserve">
-    <value>E-mail final aux destinataires</value>
-  </data>
-  <data name="SendReminderEmails" xml:space="preserve">
-    <value>Envoyer des e-mails de rappel</value>
-  </data>
-  <data name="FirstReminderDays" xml:space="preserve">
-    <value>Premier rappel (jours)</value>
-  </data>
-  <data name="ReminderIntervalDays" xml:space="preserve">
-    <value>Intervalle de rappel (jours)</value>
-  </data>
-  <data name="ExpiresWhenDays" xml:space="preserve">
-    <value>Expire après (jours)</value>
-  </data>
-  <data name="ExpiresWarningDays" xml:space="preserve">
-    <value>Avertissement d'expiration (jours)</value>
-  </data>
-  <data name="Message" xml:space="preserve">
-    <value>Message</value>
-  </data>
-  <data name="EnvelopeType" xml:space="preserve">
-    <value>Type d'enveloppe</value>
-  </data>
-  <data name="AllOptions" xml:space="preserve">
-    <value>Toutes les options</value>
-  </data>
-  <data name="DeleteReason" xml:space="preserve">
-    <value>Motif de suppression</value>
-  </data>
-  <data name="PleaseProvideReason" xml:space="preserve">
-    <value>Veuillez indiquer une raison</value>
-  </data>
-  <data name="Status" xml:space="preserve">
-    <value>Statut</value>
-  </data>
 </root>

EnvelopeGenerator.Domain/Constants/EnvelopeStatus.cs

@@ -1,10 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
+using System.Collections.Generic;
 
 namespace EnvelopeGenerator.Domain.Constants
 {
-    // http://wiki.dd/xwiki_prod/bin/view/Anwendungen/Produkt-Handbuch/Sonstiges/signFLOW/signFLOW%20-%20Enwickler-Handbuch/4.%20Anhang/4.3%20Historie%20und%20Status%20der%20Umschl%C3%A4ge/
+    // http://wiki.dd/xwiki13/bin/view/Anwendungen/Produkt-Handbuch/Sonstiges/SignFlow/Envelope%20Status/
     public enum EnvelopeStatus
     {
         Invalid = 0,
@@ -51,28 +49,5 @@ namespace EnvelopeGenerator.Domain.Constants
                 EnvelopeStatus.EnvelopeCreated,
                 EnvelopeStatus.DocumentMod_Rotation
             };
-
-        public static readonly List<EnvelopeStatus> Active = Enum.GetValues(typeof(EnvelopeStatus))
-            .Cast<EnvelopeStatus>()
-            .Where(status => status.IsActive())
-            .ToList();
-
-        public static readonly List<EnvelopeStatus> Completed = Enum.GetValues(typeof(EnvelopeStatus))
-            .Cast<EnvelopeStatus>()
-            .Where(status => status.IsCompleted())
-            .ToList();
-    }
-
-    public static class EnvelopeStatusExtensions
-    {
-        public static bool IsActive(this EnvelopeStatus status)
-        {
-            return status >= EnvelopeStatus.EnvelopeCreated && status < EnvelopeStatus.EnvelopePartlySigned;
-        }
-
-        public static bool IsCompleted(this EnvelopeStatus status)
-        {
-            return status >= EnvelopeStatus.EnvelopeCompletelySigned && status <= EnvelopeStatus.EnvelopeWithdrawn;
-        }
     }
 }

EnvelopeGenerator.Infrastructure/EGDbContextFactory.cs

@@ -0,0 +1,48 @@
+#if NET
+using EnvelopeGenerator.Application.Common.Configurations;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Options;
+
+namespace EnvelopeGenerator.Infrastructure
+{
+    public class EGDbContextFactory : IDesignTimeDbContextFactory<EGDbContext>
+    {
+        public EGDbContext CreateDbContext(string[] args)
+        {
+            var config = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.migration.json")
+                .Build();
+
+            // create DbContextOptions
+            var optionsBuilder = new DbContextOptionsBuilder<EGDbContext>();
+            optionsBuilder.UseSqlServer(config.GetConnectionString("Default"));
+
+            // create DbTriggerParams
+            var triggerLists = config.GetSection("DbTriggerParams").Get<Dictionary<string, List<string>>>();
+            var dbTriggerParams = new DbTriggerParams();
+            if (triggerLists is not null)
+                foreach (var triggerList in triggerLists)
+                {
+                    if (triggerList.Value.Count == 0)
+                        continue; // Skip empty trigger lists
+
+                    var tableName = triggerList.Key;
+
+                    dbTriggerParams[tableName] = new List<string>();
+
+                    foreach (var trigger in triggerList.Value)
+                    {
+                        dbTriggerParams[tableName].Add(trigger);
+                    }
+                }
+
+            var dbContext = new EGDbContext(optionsBuilder.Options, Options.Create(dbTriggerParams));
+            dbContext.IsMigration = true;
+            return dbContext;
+        }
+    }
+}
+#endif

EnvelopeGenerator.ReceiverUI/App.razor

@@ -1,6 +1,4 @@
-@using System.Globalization
-
-<Router AppAssembly="@typeof(Program).Assembly">
+<Router AppAssembly="@typeof(Program).Assembly">
     <Found Context="routeData">
         <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
     </Found>

EnvelopeGenerator.ReceiverUI/EnvelopeGenerator.ReceiverUI.csproj

@@ -24,13 +24,11 @@
 	  
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="DevExpress.Blazor.PdfViewer" Version="25.2.8" />
-    <PackageReference Include="DevExpress.Blazor.Reporting.JSBasedControls" Version="25.2.8" />
-    <PackageReference Include="DevExpress.Blazor.Reporting.Viewer" Version="25.2.8" />
-    <PackageReference Include="DevExpress.Drawing.Skia" Version="25.2.8" />
+    <PackageReference Include="DevExpress.Blazor.PdfViewer" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Blazor.Reporting.JSBasedControls" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Blazor.Reporting.Viewer" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Drawing.Skia" Version="25.2.3" />
     <PackageReference Include="HarfBuzzSharp.NativeAssets.WebAssembly" Version="8.3.1.2" />
-    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="8.0.28" />
-    <PackageReference Include="Microsoft.Extensions.Localization" Version="8.0.11" />
     <PackageReference Include="SkiaSharp.NativeAssets.WebAssembly" Version="3.119.1" />
     <PackageReference Include="SkiaSharp.Views.Blazor" Version="3.119.1" />
     <NativeFileReference Include="$(HarfBuzzSharpStaticLibraryPath)\2.0.23\*.a" />
@@ -42,9 +40,6 @@
   <ItemGroup>
     <Folder Include="Properties\PublishProfiles\" />
   </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\EnvelopeGenerator.Application\EnvelopeGenerator.Application.csproj" />
-  </ItemGroup>
   <ItemGroup>
     <Content Update="wwwroot\docs\privacy-policy.en-US.html">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>

EnvelopeGenerator.ReceiverUI/Models/AnnotationDto.cs

@@ -0,0 +1,32 @@
+namespace EnvelopeGenerator.ReceiverUI.Models;
+
+/// <summary>
+/// Represents a pre-assigned signature annotation position on a specific page.
+/// <br/><br/>
+/// <b>Coordinate unit (X, Y):</b> Inches (GdPicture14 native unit),
+/// origin at the <b>top-left</b> corner of the page, both axes increase downward/rightward.
+/// <br/><br/>
+/// <b>Conversion to DevExpress:</b> Multiply by 100 (DX uses 1/100 inch).
+/// Convert: <c>xDX = xInches * 100.0</c>
+/// <br/>
+/// <b>Conversion to PDF Points:</b> Multiply by 72 (1 inch = 72 points).
+/// Convert: <c>xPt = xInches * 72.0</c>
+/// <br/>
+/// <b>Y-axis for PDF (bottom-left origin):</b> Flip required for iText7.
+/// Convert: <c>yPt = (pageHeightInches - yInches - elemHeightInches) * 72.0</c>
+/// </summary>
+[Obsolete("Use SignatureDto with SignatureService.")]
+public record AnnotationDto
+{
+    /// <summary>Unique identifier of the annotation.</summary>
+    public long Id { get; init; }
+
+    /// <summary>1-based page number within the document.</summary>
+    public int Page { get; init; }
+
+    /// <summary>Horizontal position in INCHES from the left edge of the page.</summary>
+    public double X { get; init; }
+
+    /// <summary>Vertical position in INCHES from the top edge of the page.</summary>
+    public double Y { get; init; }
+}

EnvelopeGenerator.ReceiverUI/Models/EnvelopeDto.cs

@@ -1,39 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace EnvelopeGenerator.ReceiverUI.Models;
-
-public class EnvelopeDto
-{
-    [JsonPropertyName("id")]
-    public int Id { get; set; }
-
-    [JsonPropertyName("uuid")]
-    public string? Uuid { get; set; }
-
-    [JsonPropertyName("title")]
-    public string? Title { get; set; }
-
-    [JsonPropertyName("status")]
-    public int Status { get; set; }
-
-    [JsonPropertyName("docResult")]
-    public byte[]? DocResult { get; set; }
-
-    [JsonPropertyName("envelopeReceivers")]
-    public List<EnvelopeReceiverSimpleDto> EnvelopeReceivers { get; set; } = new();
-}
-
-/// <summary>
-/// Simplified receiver model for envelope list display
-/// </summary>
-public class EnvelopeReceiverSimpleDto
-{
-    [JsonPropertyName("name")]
-    public string? Name { get; set; }
-
-    [JsonPropertyName("email")]
-    public string? Email { get; set; }
-
-    [JsonPropertyName("signed")]
-    public bool Signed { get; set; }
-}

EnvelopeGenerator.ReceiverUI/Pages/EnvelopeReceiverPage.razor

@@ -11,7 +11,7 @@
 @inject IOptions<ApiOptions> AppOptions
 @inject IOptions<PdfViewerOptions> PdfViewerOptions
 @inject IJSRuntime JSRuntime
-@inject DocReceiverElementService SignatureService
+@inject SignatureService SignatureService
 @inject SignatureCacheService SignatureCacheService
 @inject EnvelopeGenerator.ReceiverUI.Services.AuthService AuthService
 @inject EnvelopeGenerator.ReceiverUI.Services.EnvelopeReceiverService EnvelopeReceiverService

EnvelopeGenerator.ReceiverUI/Pages/EnvelopeSenderPage.razor

@@ -1,442 +1,7 @@
 @page "/sender"
-@attribute [Microsoft.AspNetCore.Authorization.Authorize(Policy = "Sender")]
 
-@using System.Text.Json
-@using EnvelopeGenerator.Domain.Constants
-@using EnvelopeGenerator.ReceiverUI.Models
-@using DevExpress.Blazor
-@using EnvelopeGenerator.ReceiverUI.Services
-@inject EnvelopeGenerator.ReceiverUI.Services.EnvelopeService EnvelopeService
-@inject EnvelopeGenerator.ReceiverUI.Services.AuthService AuthService
-@inject NavigationManager Navigation
-@inject IJSRuntime JSRuntime
-@inject AppVersionService AppVersion
-
-<link href="_content/DevExpress.Blazor.Themes/blazing-berry.bs5.min.css" rel="stylesheet" />
-<link href="@AppVersion.GetVersionedUrl("css/envelope-viewer.css")" rel="stylesheet" />
-<link href="@AppVersion.GetVersionedUrl("css/sender-page.css")" rel="stylesheet" />
-
-<div class="sender-dashboard-layout">
-    <div class="sender-action-bar">
-        <div class="sender-action-bar__inner">
-            <div class="sender-title-section">
-                <div class="sender-logo">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" fill="currentColor" viewBox="0 0 16 16">
-                        <path d="M0 4a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V4Zm2-1a1 1 0 0 0-1 1v.217l7 4.2 7-4.2V4a1 1 0 0 0-1-1H2Zm13 2.383-4.708 2.825L15 11.105V5.383Zm-.034 6.876-5.64-3.471L8 9.583l-1.326-.795-5.64 3.47A1 1 0 0 0 2 13h12a1 1 0 0 0 .966-.741ZM1 11.105l4.708-2.897L1 5.383v5.722Z"/>
-                    </svg>
-                </div>
-                <div class="sender-title">Umschlag-Übersicht</div>
-            </div>
-
-            <div class="sender-toolbar">
-                <button class="sender-btn sender-btn--primary" @onclick="CreateEnvelope" title="Neuen Umschlag erstellen">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
-                        <path d="M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z"/>
-                    </svg>
-                    Neuer Umschlag
-                </button>
-
-                <button class="sender-btn" @onclick="EditEnvelope" disabled="@(_selectedEnvelope == null || IsEnvelopeSent(_selectedEnvelope))" title="Ausgewählten Umschlag bearbeiten">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
-                        <path d="M12.146.146a.5.5 0 0 1 .708 0l3 3a.5.5 0 0 1 0 .708l-10 10a.5.5 0 0 1-.168.11l-5 2a.5.5 0 0 1-.65-.65l2-5a.5.5 0 0 1 .11-.168l10-10zM11.207 2.5 13.5 4.793 14.793 3.5 12.5 1.207 11.207 2.5zm1.586 3L10.5 3.207 4 9.707V10h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.293l6.5-6.5zm-9.761 5.175-.106.106-1.528 3.821 3.821-1.528.106-.106A.5.5 0 0 1 5 12.5V12h-.5a.5.5 0 0 1-.5-.5V11h-.5a.5.5 0 0 1-.468-.325z"/>
-                    </svg>
-                    Bearbeiten
-                </button>
-
-                <button class="sender-btn sender-btn--danger" @onclick="DeleteEnvelope" disabled="@(_selectedEnvelope == null)" title="Ausgewählten Umschlag löschen">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
-                        <path d="M5.5 5.5A.5.5 0 0 1 6 6v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5zm2.5 0a.5.5 0 0 1 .5.5v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5zm3 .5a.5.5 0 0 0-1 0v6a.5.5 0 0 0 1 0V6z"/>
-                        <path fill-rule="evenodd" d="M14.5 3a1 1 0 0 1-1 1H13v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V4h-.5a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1H6a1 1 0 0 1 1-1h2a1 1 0 0 1 1 1h3.5a1 1 0 0 1 1 1v1zM4.118 4 4 4.059V13a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V4.059L11.882 4H4.118zM2.5 3V2h11v1h-11z"/>
-                    </svg>
-                    Löschen
-                </button>
-
-                <button class="sender-btn" @onclick="RefreshEnvelopes" disabled="@_isLoading" title="Aktualisieren">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
-                        <path fill-rule="evenodd" d="M8 3a5 5 0 1 0 4.546 2.914.5.5 0 0 1 .908-.417A6 6 0 1 1 8 2v1z"/>
-                        <path d="M8 4.466V.534a.25.25 0 0 1 .41-.192l2.36 1.966c.12.1.12.284 0 .384L8.41 4.658A.25.25 0 0 1 8 4.466z"/>
-                    </svg>
-                    @if (_isLoading) {
-                        <span class="spinner-border spinner-border-sm" style="width: 14px; height: 14px;"></span>
-                    }
-                </button>
-
-                <button class="sender-btn sender-btn--logout" @onclick="LogoutAsync" disabled="@_isLoggingOut" title="Abmelden">
-                    @if (_isLoggingOut) {
-                        <span class="spinner-border spinner-border-sm" style="width: 14px; height: 14px;"></span>
-                    } else {
-                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
-                            <path fill-rule="evenodd" d="M10 12.5a.5.5 0 0 1-.5.5h-8a.5.5 0 0 1-.5-.5v-9a.5.5 0 0 1 .5-.5h8a.5.5 0 0 1 .5.5v2a.5.5 0 0 0 1 0v-2A1.5 1.5 0 0 0 9.5 2h-8A1.5 1.5 0 0 0 0 3.5v9A1.5 1.5 0 0 0 1.5 14h8a1.5 1.5 0 0 0 1.5-1.5v-2a.5.5 0 0 0-1 0v2z"/>
-                            <path fill-rule="evenodd" d="M15.854 8.354a.5.5 0 0 0 0-.708l-3-3a.5.5 0 0 0-.708.708L14.293 7.5H5.5a.5.5 0 0 0 0 1h8.793l-2.147 2.146a.5.5 0 0 0 .708.708l3-3z"/>
-                        </svg>
-                    }
-                </button>
-            </div>
-        </div>
-    </div>
-
-    <div class="sender-content">
-        @if (_isLoading && _allEnvelopes == null) {
-            <div class="d-flex justify-content-center align-items-center h-100">
-                <div class="text-center">
-                    <div class="spinner-border text-white mb-3" style="width: 3.5rem; height: 3.5rem;" role="status">
-                        <span class="visually-hidden">Lädt...</span>
-                    </div>
-                    <p class="text-white fw-semibold">Umschläge werden geladen...</p>
-                </div>
-            </div>
-        } else if (_errorMessage != null) {
-            <div class="error-container">
-                <div class="alert alert-danger shadow-lg">
-                    <div class="d-flex align-items-start">
-                        <svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" fill="currentColor" class="me-3 flex-shrink-0" viewBox="0 0 16 16">
-                            <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
-                            <path d="M7.002 11a1 1 0 1 1 2 0 1 1 0 0 1-2 0zM7.1 4.995a.905.905 0 1 1 1.8 0l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 4.995z"/>
-                        </svg>
-                        <div>
-                            <h5 class="mb-2">Fehler beim Laden der Umschläge</h5>
-                            <p class="mb-0">@_errorMessage</p>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        } else {
-            <div class="sender-grid-container">
-                <div class="sender-tabs">
-                    <button class="sender-tab @(_activeTab == "active" ? "sender-tab--active" : "")" @onclick='() => _activeTab = "active"'>
-                        <span>Aktive Umschläge</span>
-                        @if (_activeEnvelopes != null) {
-                            <span style="opacity: 0.6; margin-left: 0.5rem;">(@_activeEnvelopes.Count())</span>
-                        }
-                    </button>
-                    <button class="sender-tab @(_activeTab == "completed" ? "sender-tab--active" : "")" @onclick='() => _activeTab = "completed"'>
-                        <span>Abgeschlossene Umschläge</span>
-                        @if (_completedEnvelopes != null) {
-                            <span style="opacity: 0.6; margin-left: 0.5rem;">(@_completedEnvelopes.Count())</span>
-                        }
-                    </button>
-                </div>
-
-                <div class="sender-grid-wrapper">
-                    @if (_activeTab == "active") {
-                        <DxGrid Data="@_activeEnvelopes"
-                                @ref="_gridActive"
-                                ShowFilterRow="true"
-                                ShowSearchBox="true"
-                                AllowColumnReorder="true"
-                                AllowSort=true
-                                ColumnResizeMode="GridColumnResizeMode.ColumnsContainer"
-                                PageSize="20"
-                                PagerVisible="true"
-                                SelectionMode="GridSelectionMode.Single"
-                                SelectedDataItem="@_selectedEnvelope"
-                                SelectedDataItemChanged="@OnSelectedEnvelopeChanged"
-                                CustomizeElement="OnCustomizeElement">
-                            <Columns>
-                                <DxGridDataColumn FieldName="Id" Caption="ID">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @((cellContext.DataItem as EnvelopeDto)?.Id)
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="Title" Caption="Titel">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        <strong>@((cellContext.DataItem as EnvelopeDto)?.Title)</strong>
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="Status" Caption="Status">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @{
-                                            var envelope = cellContext.DataItem as EnvelopeDto;
-                                            if (envelope != null) {
-                                                var statusInfo = GetStatusInfo(envelope.Status);
-                                                <div class="status-badge status-badge--@statusInfo.CssClass">
-                                                    <span class="status-dot status-dot--@statusInfo.DotColor"></span>
-                                                    @statusInfo.Label
-                                                </div>
-                                            }
-                                        }
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="EnvelopeReceivers" Caption="Empfänger">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @{
-                                            var envelope = cellContext.DataItem as EnvelopeDto;
-                                            if (envelope != null) {
-                                                var receivers = envelope.EnvelopeReceivers ?? new List<EnvelopeReceiverSimpleDto>();
-                                                var signed = receivers.Count(r => r.Signed);
-                                                var total = receivers.Count;
-                                                <div style="display: flex; align-items: center; gap: 0.5rem;">
-                                                    <span style="font-size: 0.875rem; color: #6b7280;">
-                                                        @signed / @total unterschrieben
-                                                    </span>
-                                                    @if (total > 0) {
-                                                        <div style="flex: 1; min-width: 60px; max-width: 120px; height: 6px; background: #e5e7eb; border-radius: 3px; overflow: hidden;">
-                                                            <div style="height: 100%; background: linear-gradient(90deg, #81c784 0%, #66bb6a 100%); width: @((signed * 100.0 / total).ToString("F0"))%;"></div>
-                                                        </div>
-                                                    }
-                                                </div>
-                                            }
-                                        }
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                            </Columns>
-                            <DetailRowTemplate Context="detailContext">
-                                <div style="padding: 1rem; background: #f9fafb;">
-                                    <h6 style="font-weight: 600; color: #374151; margin-bottom: 0.75rem;">Empfänger</h6>
-                                    @{
-                                        var envelope = detailContext.DataItem as EnvelopeDto;
-                                        if (envelope?.EnvelopeReceivers?.Any() == true) {
-                                            <div style="display: flex; flex-direction: column; gap: 0.5rem;">
-                                                @foreach (var receiver in envelope.EnvelopeReceivers) {
-                                                    <div style="display: flex; align-items: center; gap: 1rem; padding: 0.5rem; background: white; border-radius: 6px; border: 1px solid #e5e7eb;">
-                                                        <span class="receiver-badge receiver-badge--@(receiver.Signed ? "signed" : "unsigned")" style="min-width: 100px;">
-                                                            @if (receiver.Signed) {
-                                                                <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="currentColor" viewBox="0 0 16 16">
-                                                                    <path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/>
-                                                                </svg>
-                                                                <span>Unterschrieben</span>
-                                                            } else {
-                                                                <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="currentColor" viewBox="0 0 16 16">
-                                                                    <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
-                                                                    <path d="M4.646 4.646a.5.5 0 0 1 .708 0L8 7.293l2.646-2.647a.5.5 0 0 1 .708.708L8.707 8l2.647 2.646a.5.5 0 0 1-.708.708L8 8.707l-2.646 2.647a.5.5 0 0 1-.708-.708L7.293 8 4.646 5.354a.5.5 0 0 1 0-.708z"/>
-                                                                </svg>
-                                                                <span>Ausstehend</span>
-                                                            }
-                                                        </span>
-                                                        <div style="flex: 1; font-size: 0.875rem;">
-                                                            <strong style="color: #1f2937;">@receiver.Name</strong>
-                                                            <span style="color: #6b7280; margin-left: 0.5rem;">@receiver.Email</span>
-                                                        </div>
-                                                    </div>
-                                                }
-                                            </div>
-                                        } else {
-                                            <p style="color: #9ca3af; font-size: 0.875rem; margin: 0;">Keine Empfänger</p>
-                                        }
-                                    }
-                                </div>
-                            </DetailRowTemplate>
-                        </DxGrid>
-                    } else {
-                        <DxGrid Data="@_completedEnvelopes"
-                                @ref="_gridCompleted"
-                                ShowFilterRow="true"
-                                ShowSearchBox="true"
-                                PageSize="20"
-                                PagerVisible="true"
-                                SelectionMode="GridSelectionMode.Single"
-                                SelectedDataItem="@_selectedEnvelope"
-                                SelectedDataItemChanged="@OnSelectedEnvelopeChanged"
-                                CustomizeElement="OnCustomizeElement">
-                            <Columns>
-                                <DxGridDataColumn FieldName="Id" Caption="ID">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @((cellContext.DataItem as EnvelopeDto)?.Id)
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="Title" Caption="Titel">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        <strong>@((cellContext.DataItem as EnvelopeDto)?.Title)</strong>
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="Status" Caption="Status">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @{
-                                            var envelope = cellContext.DataItem as EnvelopeDto;
-                                            if (envelope != null) {
-                                                var statusInfo = GetStatusInfo(envelope.Status);
-                                                <div class="status-badge status-badge--@statusInfo.CssClass">
-                                                    <span class="status-dot status-dot--@statusInfo.DotColor"></span>
-                                                    @statusInfo.Label
-                                                </div>
-                                            }
-                                        }
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                                <DxGridDataColumn FieldName="EnvelopeReceivers" Caption="Empfänger">
-                                    <CellDisplayTemplate Context="cellContext">
-                                        @{
-                                            var envelope = cellContext.DataItem as EnvelopeDto;
-                                            if (envelope != null) {
-                                                var receivers = envelope.EnvelopeReceivers ?? new List<EnvelopeReceiverSimpleDto>();
-                                                var signed = receivers.Count(r => r.Signed);
-                                                var total = receivers.Count;
-                                                <div style="display: flex; align-items: center; gap: 0.5rem;">
-                                                    <span style="font-size: 0.875rem; color: #6b7280;">
-                                                        @signed / @total unterschrieben
-                                                    </span>
-                                                    @if (total > 0) {
-                                                        <div style="flex: 1; min-width: 60px; max-width: 120px; height: 6px; background: #e5e7eb; border-radius: 3px; overflow: hidden;">
-                                                            <div style="height: 100%; background: linear-gradient(90deg, #81c784 0%, #66bb6a 100%); width: @((signed * 100.0 / total).ToString("F0"))%;"></div>
-                                                        </div>
-                                                    }
-                                                </div>
-                                            }
-                                        }
-                                    </CellDisplayTemplate>
-                                </DxGridDataColumn>
-                            </Columns>
-                            <DetailRowTemplate Context="detailContext">
-                                <div style="padding: 1rem; background: #f9fafb;">
-                                    <h6 style="font-weight: 600; color: #374151; margin-bottom: 0.75rem;">Empfänger</h6>
-                                    @{
-                                        var envelope = detailContext.DataItem as EnvelopeDto;
-                                        if (envelope?.EnvelopeReceivers?.Any() == true) {
-                                            <div style="display: flex; flex-direction: column; gap: 0.5rem;">
-                                                @foreach (var receiver in envelope.EnvelopeReceivers) {
-                                                    <div style="display: flex; align-items: center; gap: 1rem; padding: 0.5rem; background: white; border-radius: 6px; border: 1px solid #e5e7eb;">
-                                                        <span class="receiver-badge receiver-badge--@(receiver.Signed ? "signed" : "unsigned")" style="min-width: 100px;">
-                                                            @if (receiver.Signed) {
-                                                                <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="currentColor" viewBox="0 0 16 16">
-                                                                    <path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/>
-                                                                </svg>
-                                                                <span>Unterschrieben</span>
-                                                            } else {
-                                                                <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="currentColor" viewBox="0 0 16 16">
-                                                                    <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
-                                                                    <path d="M4.646 4.646a.5.5 0 0 1 .708 0L8 7.293l2.646-2.647a.5.5 0 0 1 .708.708L8.707 8l2.647 2.646a.5.5 0 0 1-.708.708L8 8.707l-2.646 2.647a.5.5 0 0 1-.708-.708L7.293 8 4.646 5.354a.5.5 0 0 1 0-.708z"/>
-                                                                </svg>
-                                                                <span>Ausstehend</span>
-                                                            }
-                                                        </span>
-                                                        <div style="flex: 1; font-size: 0.875rem;">
-                                                            <strong style="color: #1f2937;">@receiver.Name</strong>
-                                                            <span style="color: #6b7280; margin-left: 0.5rem;">@receiver.Email</span>
-                                                        </div>
-                                                    </div>
-                                                }
-                                            </div>
-                                        } else {
-                                            <p style="color: #9ca3af; font-size: 0.875rem; margin: 0;">Keine Empfänger</p>
-                                        }
-                                    }
-                                </div>
-                            </DetailRowTemplate>
-                        </DxGrid>
-                    }
-                </div>
-            </div>
-        }
-    </div>
-</div>
+<h3>EnvelopeSender</h3>
 
 @code {
-    private IEnumerable<EnvelopeDto>? _allEnvelopes;
-    private IEnumerable<EnvelopeDto>? _activeEnvelopes;
-    private IEnumerable<EnvelopeDto>? _completedEnvelopes;
-    private EnvelopeDto? _selectedEnvelope;
-    private string _activeTab = "active";
-    private bool _isLoading = true;
-    private bool _isLoggingOut = false;
-    private string? _errorMessage;
-    private DxGrid? _gridActive;
-    private DxGrid? _gridCompleted;
 
-    protected override async Task OnInitializedAsync()
-    {
-        var hasAccess = await AuthService.CheckSenderAsync();
-        if (!hasAccess)
-        {
-            Navigation.NavigateTo($"/sender/login");
-            return;
-        }
-
-        await LoadEnvelopesAsync();
-    }
-
-    async Task LoadEnvelopesAsync()
-    {
-        _isLoading = true;
-        _errorMessage = null;
-        await InvokeAsync(StateHasChanged);
-
-        try
-        {
-            _allEnvelopes = await EnvelopeService.GetAsync() ?? [];
-            
-            // Split into active and completed based on status
-            var envelopes = _allEnvelopes.ToList();
-            _activeEnvelopes = envelopes.Where(e => ((EnvelopeStatus)e.Status).IsActive()).ToList();
-            _completedEnvelopes = envelopes.Where(e => ((EnvelopeStatus)e.Status).IsCompleted()).ToList();
-
-            await JSRuntime.InvokeVoidAsync("console.log", $"Loaded {_activeEnvelopes.Count()} active and {_completedEnvelopes.Count()} completed envelopes");
-        }
-        catch (Exception ex)
-        {
-            _errorMessage = ex.Message;
-            await JSRuntime.InvokeVoidAsync("console.error", "Fehler beim Laden der Umschläge:", ex.ToString());
-        }
-        finally
-        {
-            _isLoading = false;
-            await InvokeAsync(StateHasChanged);
-        }
-    }
-
-    async Task RefreshEnvelopes()
-    {
-        await LoadEnvelopesAsync();
-    }
-
-    void CreateEnvelope()
-    {
-        // TODO: Navigate to envelope creation page
-        JSRuntime.InvokeVoidAsync("console.log", "Create envelope clicked - not yet implemented");
-    }
-
-    void EditEnvelope()
-    {
-        if (_selectedEnvelope == null) return;
-        // TODO: Navigate to envelope editor
-        JSRuntime.InvokeVoidAsync("console.log", $"Edit envelope {_selectedEnvelope.Id} clicked - not yet implemented");
-    }
-
-    void DeleteEnvelope()
-    {
-        if (_selectedEnvelope == null) return;
-        // TODO: Show delete confirmation dialog
-        JSRuntime.InvokeVoidAsync("console.log", $"Delete envelope {_selectedEnvelope.Id} clicked - not yet implemented");
-    }
-
-    async Task LogoutAsync()
-    {
-        _isLoggingOut = true;
-        await InvokeAsync(StateHasChanged);
-        await AuthService.LogoutSenderAsync();
-        Navigation.NavigateTo("/sender/login", forceLoad: true);
-    }
-
-    bool IsEnvelopeSent(EnvelopeDto envelope)
-    {
-        var status = (EnvelopeStatus)envelope.Status;
-        return status >= EnvelopeStatus.EnvelopeQueued;
-    }
-
-    (string Label, string CssClass, string DotColor) GetStatusInfo(int statusCode)
-    {
-        var status = (EnvelopeStatus)statusCode;
-        return status switch
-        {
-            EnvelopeStatus.EnvelopePartlySigned => ("Teilweise unterschrieben", "partly-signed", "green"),
-            EnvelopeStatus.EnvelopeQueued => ("In Warteschlange", "queued", "orange"),
-            EnvelopeStatus.EnvelopeSent => ("Gesendet", "sent", "orange"),
-            EnvelopeStatus.EnvelopeCompletelySigned => ("Vollständig unterschrieben", "completed", "green"),
-            EnvelopeStatus.EnvelopeDeleted => ("Gelöscht", "deleted", "red"),
-            EnvelopeStatus.EnvelopeRejected => ("Abgelehnt", "rejected", "red"),
-            EnvelopeStatus.EnvelopeWithdrawn => ("Zurückgezogen", "withdrawn", "red"),
-            EnvelopeStatus.EnvelopeCreated => ("Erstellt", "created", "blue"),
-            EnvelopeStatus.EnvelopeSaved => ("Gespeichert", "saved", "blue"),
-            _ => ("Unbekannt", "unknown", "blue")
-        };
-    }
-
-    void OnCustomizeElement(GridCustomizeElementEventArgs e)
-    {
-        // Future: Add custom row coloring based on status if needed
-    }
-
-    void OnSelectedEnvelopeChanged(object envelope)
-    {
-        _selectedEnvelope = envelope as EnvelopeDto;
-    }
 }

EnvelopeGenerator.ReceiverUI/Pages/Example/ReportViewer.razor

@@ -6,7 +6,6 @@
 @using DevExpress.Utils
 @using DevExpress.XtraPrinting
 @using DevExpress.XtraPrinting.Drawing
-@using EnvelopeGenerator.Application.Common.Dto
 @using Microsoft.JSInterop
 @using XtraReport = DevExpress.XtraReports.UI.XtraReport
 @using BottomMarginBand = DevExpress.XtraReports.UI.BottomMarginBand
@@ -302,10 +301,7 @@ Shown="OnPopupShownAsync">
     bool IsLoggingOut;
 
     IReadOnlyList<AnnotationDto> _annotations = [];
-    IEnumerable<int> AnnotationPages => _annotations
-    .Select(a => a.Page ?? throw new InvalidOperationException($"Annotation page is missing for annotation ID {a.Id}. Annotation details: X={a.X}, Y={a.Y}"))
-    .Distinct()
-    .OrderBy(p => p);
+    IEnumerable<int> AnnotationPages => _annotations.Select(a => a.Page).Distinct().OrderBy(p => p);
     EnvelopeReceiverDto? _envelopeReceiver;
     record SignatureCapture(string DataUrl, string FullName, string Position, string Place);
     SignatureCapture? _capturedSignature;

EnvelopeGenerator.ReceiverUI/Program.cs

@@ -7,9 +7,6 @@ using EnvelopeGenerator.ReceiverUI.Options;
 using DevExpress.XtraReports.Services;
 using DevExpress.Blazor.Reporting;
 using DevExpress.XtraReports.Web.Extensions;
-using EnvelopeGenerator.Application.Resources;
-using Microsoft.Extensions.Localization;
-using System.Globalization;
 
 var builder = WebAssemblyHostBuilder.CreateDefault(args);
 builder.RootComponents.Add<App>("#app");
@@ -23,14 +20,9 @@ builder.Services.AddScoped<DocumentService>();
 builder.Services.AddScoped<AuthService>();
 builder.Services.AddScoped<AnnotationService>();
 builder.Services.AddScoped<EnvelopeReceiverService>();
-builder.Services.AddScoped<DocReceiverElementService>();
+builder.Services.AddScoped<SignatureService>();
 builder.Services.AddScoped<SignatureCacheService>();
 builder.Services.AddSingleton<AppVersionService>();
-builder.Services.AddScoped<EnvelopeService>();
-builder.Services.AddScoped<CultureService>();
-
-// Localization services
-builder.Services.AddLocalization();
 
 builder.Services.AddDevExpressWebAssemblyBlazorReportViewer();
 builder.Services.AddDevExpressWebAssemblyBlazorPdfViewer();
@@ -49,30 +41,5 @@ builder.Services.AddScoped<IReportProviderAsync, CustomReportProvider>();
 ReportStorageWebExtension.RegisterExtensionGlobal(new InMemoryReportStorageWebExtension());
 
 var host = builder.Build();
-
-// ⚠️ IMPORTANT: BLAZOR WASM-SPECIFIC CULTURE INITIALIZATION
-// This approach sets DefaultThreadCurrentCulture globally, which is SAFE for WebAssembly
-// because each user runs their own isolated app instance in their browser.
-// 
-// ⚠️ TODO: REMOVE/REFACTOR WHEN MIGRATING TO BLAZOR SERVER/AUTO
-// In Server/Auto render modes, this is DANGEROUS because:
-// - Server runs a single shared instance for all users
-// - Setting global culture affects ALL connected users simultaneously
-// - Race conditions and culture conflicts will occur
-//
-// Migration Guide:
-// - Option 1: Use RequestLocalizationMiddleware for per-request culture
-// - Option 2: Use CascadingParameter with per-circuit culture state
-// - See: https://learn.microsoft.com/aspnet/core/blazor/globalization-localization
-//
-// Related files to update on migration:
-// - LanguageSelector.razor (remove manual culture setting)
-// - App.razor (may need CascadingValue for culture)
-// - Startup/Program.cs (add middleware)
-var cultureService = host.Services.GetRequiredService<CultureService>();
-var culture = await cultureService.InitializeCultureAsync();
-CultureInfo.DefaultThreadCurrentCulture = culture;
-CultureInfo.DefaultThreadCurrentUICulture = culture;
-
 await FontLoader.LoadFonts(host.Services.GetRequiredService<HttpClient>(), new List<string> { "opensans.ttf" });
 await host.RunAsync();

EnvelopeGenerator.ReceiverUI/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "EnvelopeGenerator.ReceiverUI": {
       "commandName": "Project",
-      "launchBrowser": false,
+      "launchBrowser": true,
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       },

EnvelopeGenerator.ReceiverUI/Services/AnnotationService.cs

@@ -1,6 +1,5 @@
 using System.Net.Http.Json;
 using System.Text.Json;
-using EnvelopeGenerator.Application.Common.Dto;
 using EnvelopeGenerator.ReceiverUI.Models;
 using EnvelopeGenerator.ReceiverUI.Options;
 using Microsoft.Extensions.Options;

EnvelopeGenerator.ReceiverUI/Services/AuthService.cs

@@ -58,16 +58,6 @@ public class AuthService(HttpClient http, IOptions<ApiOptions> apiOptions)
         return response.IsSuccessStatusCode;
     }
 
-    /// <summary>
-    /// Checks whether the current user holds a valid receiver token for the given envelope key.
-    /// Calls GET /api/auth/check/envelope/{envelopeKey}.
-    /// </summary>
-    public async Task<bool> CheckSenderAsync(CancellationToken cancel = default)
-    {
-        var response = await http.GetAsync($"{_api.BaseUrl}/api/auth/check", cancel);
-        return response.StatusCode == HttpStatusCode.OK;
-    }
-
     /// <summary>
     /// Authenticates a sender user with username and password.
     /// Calls POST /api/auth?cookie=true with JSON body.
@@ -88,16 +78,4 @@ public class AuthService(HttpClient http, IOptions<ApiOptions> apiOptions)
             _ => SenderLoginResult.Error
         };
     }
-
-    /// <summary>
-    /// Logs out the sender user by removing the authentication cookie.
-    /// Calls POST /api/auth/logout.
-    /// </summary>
-    public async Task<bool> LogoutSenderAsync(CancellationToken cancel = default)
-    {
-        var response = await http.PostAsync(
-            $"{_api.BaseUrl}/api/auth/logout",
-            null, cancel);
-        return response.IsSuccessStatusCode;
-    }
 }

EnvelopeGenerator.ReceiverUI/Services/CultureService.cs

@@ -1,74 +0,0 @@
-using System.Globalization;
-using Microsoft.JSInterop;
-
-namespace EnvelopeGenerator.ReceiverUI.Services;
-
-/// <summary>
-/// Service for managing application culture/localization.
-/// </summary>
-public class CultureService
-{
-    private readonly IJSRuntime _jsRuntime;
-    private const string CULTURE_KEY = "AppCulture";
-
-    public CultureService(IJSRuntime jsRuntime)
-    {
-        _jsRuntime = jsRuntime;
-    }
-
-    /// <summary>
-    /// Gets the list of supported cultures.
-    /// </summary>
-    public static CultureInfo[] SupportedCultures { get; } = new[]
-    {
-        new CultureInfo("de-DE"),
-        new CultureInfo("en-US"),
-        new CultureInfo("fr-FR")
-    };
-
-    /// <summary>
-    /// Sets the application culture and stores it in localStorage.
-    /// </summary>
-    public async Task SetCultureAsync(string culture)
-    {
-        if (!SupportedCultures.Any(c => c.Name == culture))
-            throw new ArgumentException($"Culture '{culture}' is not supported.", nameof(culture));
-
-        await _jsRuntime.InvokeVoidAsync("localStorage.setItem", CULTURE_KEY, culture);
-    }
-
-    /// <summary>
-    /// Gets the stored culture from localStorage.
-    /// </summary>
-    public async Task<string?> GetCultureAsync()
-    {
-        try
-        {
-            return await _jsRuntime.InvokeAsync<string?>("localStorage.getItem", CULTURE_KEY);
-        }
-        catch
-        {
-            return null;
-        }
-    }
-
-    /// <summary>
-    /// Initializes the culture from localStorage or browser settings.
-    /// </summary>
-    public async Task<CultureInfo> InitializeCultureAsync()
-    {
-        var storedCulture = await GetCultureAsync();
-        
-        if (!string.IsNullOrEmpty(storedCulture) && 
-            SupportedCultures.Any(c => c.Name == storedCulture))
-        {
-            return new CultureInfo(storedCulture);
-        }
-
-        // Fallback to browser culture or default
-        var browserCulture = CultureInfo.CurrentCulture.Name;
-        var matchedCulture = SupportedCultures.FirstOrDefault(c => c.Name == browserCulture);
-        
-        return matchedCulture ?? SupportedCultures[0]; // Default to German
-    }
-}

EnvelopeGenerator.ReceiverUI/Services/EnvelopeService.cs

@@ -1,72 +0,0 @@
-using System.Net.Http.Json;
-using System.Text.Json;
-using EnvelopeGenerator.ReceiverUI.Models;
-using EnvelopeGenerator.ReceiverUI.Options;
-using Microsoft.AspNetCore.WebUtilities;
-using Microsoft.Extensions.Options;
-
-namespace EnvelopeGenerator.ReceiverUI.Services;
-
-/// <summary>
-/// Retrieves <see cref="EnvelopeDto"/>s from the API.
-/// </summary>
-public class EnvelopeService
-{
-    private readonly HttpClient _http;
-    private readonly ApiOptions _apiOptions;
-    private static readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
-
-    public EnvelopeService(HttpClient http, IOptions<ApiOptions> apiOptions)
-    {
-        _http = http;
-        _apiOptions = apiOptions.Value;
-    }
-
-    /// <summary>
-    /// Fetches envelopes from the API with optional filters.
-    /// </summary>
-    /// <exception cref="HttpRequestException">Thrown when the API request fails.</exception>
-    public async Task<IEnumerable<EnvelopeDto>?> GetAsync(
-        int? id = null,
-        string? uuid = null,
-        bool? onlyActive = null,
-        bool? onlyCompleted = null,
-        CancellationToken cancel = default)
-    {
-        var baseUrl = $"{_apiOptions.BaseUrl}/api/Envelope";
-        var queryParams = new Dictionary<string, string?>();
-
-        if (id.HasValue)
-        {
-            queryParams["Id"] = id.Value.ToString();
-        }
-        if (!string.IsNullOrEmpty(uuid))
-        {
-            queryParams["Uuid"] = uuid;
-        }
-        if (onlyActive.HasValue)
-        {
-            queryParams["OnlyActive"] = onlyActive.Value.ToString();
-        }
-        if (onlyCompleted.HasValue)
-        {
-            queryParams["OnlyCompleted"] = onlyCompleted.Value.ToString();
-        }
-
-        var url = QueryHelpers.AddQueryString(baseUrl, queryParams);
-
-        var response = await _http.GetAsync(url, cancel);
-
-        if (!response.IsSuccessStatusCode)
-        {
-            var statusCode = (int)response.StatusCode;
-            var reasonPhrase = response.ReasonPhrase ?? "Unknown error";
-            throw new HttpRequestException(
-                $"Failed to load envelopes. Status: {statusCode} ({reasonPhrase})",
-                null,
-                response.StatusCode);
-        }
-
-        return await response.Content.ReadFromJsonAsync<IEnumerable<EnvelopeDto>>(_jsonOptions, cancel);
-    }
-}

EnvelopeGenerator.ReceiverUI/Services/SignatureService.cs

@@ -6,13 +6,13 @@ using Microsoft.Extensions.Options;
 
 namespace EnvelopeGenerator.ReceiverUI.Services;
 
-public class DocReceiverElementService(HttpClient http, IOptions<ApiOptions> apiOptions)
+public class SignatureService(HttpClient http, IOptions<ApiOptions> apiOptions)
 {
     private static readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
 
     public async Task<IReadOnlyList<SignatureDto>> GetAsync(string envelopeKey, CancellationToken cancel = default)
     {
-        var url = $"{apiOptions.Value.BaseUrl}/api/DocReceiverElement/{Uri.EscapeDataString(envelopeKey)}";
+        var url = $"{apiOptions.Value.BaseUrl}/api/Signature/{Uri.EscapeDataString(envelopeKey)}";
         var response = await http.GetAsync(url, cancel);
 
         if (!response.IsSuccessStatusCode)

EnvelopeGenerator.ReceiverUI/Shared/LanguageSelector.razor

@@ -1,80 +0,0 @@
-@using System.Globalization
-@using EnvelopeGenerator.ReceiverUI.Services
-@inject IJSRuntime JSRuntime
-@inject NavigationManager Navigation
-@inject CultureService CultureService
-
-<div class="language-selector">
-    <button class="language-selector__trigger" @onclick="ToggleDropdown" aria-label="Select Language">
-        <span class="fi fi-@GetFlagCode(CurrentCulture)"></span>
-        <span class="language-selector__arrow">@GetLanguageName(CurrentCulture)</span>
-    </button>
-    
-    @if (isOpen)
-    {
-        <div class="language-selector__dropdown">
-            <button class="language-selector__option" @onclick="@(() => ChangeLanguageAsync("de-DE"))">
-                <span class="fi fi-de"></span>
-                <span>Deutsch</span>
-            </button>
-            <button class="language-selector__option" @onclick="@(() => ChangeLanguageAsync("en-US"))">
-                <span class="fi fi-us"></span>
-                <span>English</span>
-            </button>
-            <button class="language-selector__option" @onclick="@(() => ChangeLanguageAsync("fr-FR"))">
-                <span class="fi fi-fr"></span>
-                <span>Français</span>
-            </button>
-        </div>
-    }
-</div>
-
-@code {
-    private bool isOpen = false;
-    private string CurrentCulture => CultureInfo.CurrentCulture.Name;
-
-    private void ToggleDropdown()
-    {
-        isOpen = !isOpen;
-    }
-
-    private async Task ChangeLanguageAsync(string culture)
-    {
-        if (CultureInfo.CurrentCulture.Name != culture)
-        {
-            await CultureService.SetCultureAsync(culture);
-            
-            // Set culture without page reload
-            var cultureInfo = new CultureInfo(culture);
-            CultureInfo.DefaultThreadCurrentCulture = cultureInfo;
-            CultureInfo.DefaultThreadCurrentUICulture = cultureInfo;
-            
-            // Navigate without reload to trigger re-render
-            Navigation.NavigateTo(Navigation.Uri, forceLoad: false);
-        }
-        
-        isOpen = false;
-    }
-
-    private string GetFlagCode(string culture)
-    {
-        return culture switch
-        {
-            "de-DE" => "de",
-            "en-US" => "us",
-            "fr-FR" => "fr",
-            _ => "de"
-        };
-    }
-
-    private string GetLanguageName(string culture)
-    {
-        return culture switch
-        {
-            "de-DE" => "Deutsch",
-            "en-US" => "English",
-            "fr-FR" => "Français",
-            _ => "Deutsch"
-        };
-    }
-}

EnvelopeGenerator.ReceiverUI/Shared/MainLayout.razor

@@ -8,12 +8,9 @@
         </article>
     </main>
     <footer class="receiver-footer">
-        <div class="receiver-footer__content">
         <span>&copy; SignFlow 2023-2024 <a href="https://digitaldata.works" target="_blank" rel="noopener">Digital Data GmbH</a></span>
         <span class="receiver-footer__sep">&#124;</span>
         <a href="docs/privacy-policy.de-DE.html" target="_blank" rel="noopener">Datenschutz</a>
-        </div>
-        <LanguageSelector />
     </footer>
 </div>
 

EnvelopeGenerator.ReceiverUI/Shared/MainLayout.razor.css

@@ -15,18 +15,3 @@ article {
     padding: 0 !important;
     margin: 0 !important;
 }
-
-.receiver-footer {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 1rem 2rem;
-    gap: 1rem;
-}
-
-.receiver-footer__content {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-}
-

EnvelopeGenerator.ReceiverUI/wwwroot/css/app.css

@@ -366,74 +366,3 @@ article {
 .receiver-footer__sep {
     opacity: 0.4;
 }
-
-/* ── Language Selector (Footer) ──────────────────────────────────────────── */
-.language-selector {
-    position: relative;
-    display: inline-block;
-}
-
-.language-selector__trigger {
-    display: flex;
-    align-items: center;
-    gap: 0.4rem;
-    padding: 0.25rem 0.5rem;
-    background: rgba(255, 255, 255, 0.1);
-    border: 1px solid rgba(255, 255, 255, 0.2);
-    border-radius: 4px;
-    color: rgba(255, 255, 255, 0.9);
-    cursor: pointer;
-    font-size: 1rem;
-    transition: all 0.2s ease;
-}
-
-.language-selector__trigger:hover {
-    background: rgba(255, 255, 255, 0.15);
-    border-color: rgba(255, 255, 255, 0.3);
-}
-
-.language-selector__arrow {
-    font-size: 0.6rem;
-    transition: transform 0.2s ease;
-    opacity: 0.7;
-}
-
-.language-selector__dropdown {
-    position: absolute;
-    bottom: calc(100% + 0.5rem);
-    right: 0;
-    background: white;
-    border: 1px solid #ddd;
-    border-radius: 6px;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
-    min-width: 160px;
-    z-index: 1000;
-    overflow: hidden;
-}
-
-.language-selector__option {
-    display: flex;
-    align-items: center;
-    gap: 0.75rem;
-    width: 100%;
-    padding: 0.65rem 1rem;
-    background: white;
-    border: none;
-    color: #333;
-    cursor: pointer;
-    font-size: 0.9rem;
-    transition: background-color 0.2s ease;
-    text-align: left;
-}
-
-.language-selector__option:hover {
-    background-color: #f5f5f5;
-}
-
-.language-selector__option .fi {
-    font-size: 1.25rem;
-}
-
-.language-selector__option span:last-child {
-    font-weight: 500;
-}

EnvelopeGenerator.ReceiverUI/wwwroot/css/sender-page.css

@@ -1,297 +0,0 @@
-.sender-dashboard-layout {
-    display: flex;
-    flex-direction: column;
-    height: 100vh;
-    overflow: hidden;
-    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e22ce 100%);
-}
-
-.sender-action-bar {
-    background: rgba(255, 255, 255, 0.95);
-    backdrop-filter: blur(20px);
-    border-bottom: 3px solid rgba(126, 34, 206, 0.3);
-    padding: 1rem 2rem;
-    flex-shrink: 0;
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
-}
-
-.sender-action-bar__inner {
-    max-width: 1600px;
-    margin: 0 auto;
-    display: flex;
-    align-items: center;
-    justify-content: space-between;
-    gap: 1.5rem;
-}
-
-.sender-title-section {
-    display: flex;
-    align-items: center;
-    gap: 1rem;
-}
-
-.sender-logo svg {
-    filter: drop-shadow(0 2px 4px rgba(126, 34, 206, 0.3));
-    color: #7e22ce;
-}
-
-.sender-title {
-    font-size: 1.25rem;
-    font-weight: 700;
-    color: #1e293b;
-    letter-spacing: -0.025em;
-}
-
-.sender-toolbar {
-    display: flex;
-    align-items: center;
-    gap: 0.75rem;
-    flex-wrap: wrap;
-}
-
-.sender-btn {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-    padding: 0.625rem 1.125rem;
-    background: linear-gradient(135deg, rgba(126, 34, 206, 0.05) 0%, rgba(42, 82, 152, 0.05) 100%);
-    border: 1px solid rgba(126, 34, 206, 0.2);
-    border-radius: 8px;
-    font-size: 0.875rem;
-    font-weight: 600;
-    color: #1e293b;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    white-space: nowrap;
-}
-
-    .sender-btn:hover:not(:disabled) {
-        background: linear-gradient(135deg, rgba(126, 34, 206, 0.1) 0%, rgba(42, 82, 152, 0.1) 100%);
-        border-color: rgba(126, 34, 206, 0.4);
-        transform: translateY(-1px);
-        box-shadow: 0 4px 12px rgba(126, 34, 206, 0.2);
-    }
-
-    .sender-btn:disabled {
-        opacity: 0.4;
-        cursor: not-allowed;
-        background: rgba(0, 0, 0, 0.02);
-        border-color: rgba(0, 0, 0, 0.1);
-    }
-
-.sender-btn--primary {
-    background: linear-gradient(135deg, #7e22ce 0%, #2a5298 100%);
-    border-color: transparent;
-    color: white;
-}
-
-    .sender-btn--primary:hover:not(:disabled) {
-        background: linear-gradient(135deg, #6b1cb0 0%, #1e3a72 100%);
-        transform: translateY(-1px);
-        box-shadow: 0 4px 16px rgba(126, 34, 206, 0.3);
-    }
-
-.sender-btn--danger {
-    background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, rgba(220, 38, 38, 0.08) 100%);
-    border-color: rgba(239, 68, 68, 0.3);
-    color: #dc2626;
-}
-
-    .sender-btn--danger:hover:not(:disabled) {
-        background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
-        border-color: transparent;
-        color: white;
-    }
-
-.sender-btn--logout {
-    padding: 0.5rem;
-    min-width: 38px;
-}
-
-.sender-content {
-    flex: 1;
-    min-height: 0;
-    padding: 1.5rem;
-    position: relative;
-    overflow: auto;
-}
-
-.sender-grid-container {
-    background: rgba(255, 255, 255, 0.98);
-    backdrop-filter: blur(20px);
-    border-radius: 16px;
-    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.1);
-    overflow: hidden;
-    position: relative;
-    max-width: 1600px;
-    margin: 0 auto;
-}
-
-    .sender-grid-container::before {
-        content: '';
-        position: absolute;
-        top: 0;
-        left: 0;
-        right: 0;
-        height: 4px;
-        background: linear-gradient(90deg, #7e22ce 0%, #2a5298 100%);
-        z-index: 1;
-        border-radius: 16px 16px 0 0;
-    }
-
-.sender-tabs {
-    display: flex;
-    border-bottom: 2px solid rgba(126, 34, 206, 0.1);
-    padding: 0 2rem;
-    background: rgba(126, 34, 206, 0.02);
-}
-
-.sender-tab {
-    padding: 1rem 1.5rem;
-    font-size: 0.875rem;
-    font-weight: 600;
-    color: #6b7280;
-    background: transparent;
-    border: none;
-    border-bottom: 3px solid transparent;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    white-space: nowrap;
-}
-
-    .sender-tab:hover {
-        color: #7e22ce;
-        background: rgba(126, 34, 206, 0.05);
-    }
-
-.sender-tab--active {
-    color: #7e22ce;
-    border-bottom-color: #7e22ce;
-    background: white;
-}
-
-.sender-grid-wrapper {
-    padding: 1.5rem 2rem 2rem;
-}
-
-/* Hide DevExpress empty cells */
-.dxbl-grid-empty-cell {
-    display: none !important;
-}
-
-.status-badge {
-    display: inline-flex;
-    align-items: center;
-    gap: 0.375rem;
-    padding: 0.25rem 0.625rem;
-    border-radius: 6px;
-    font-size: 0.75rem;
-    font-weight: 600;
-    white-space: nowrap;
-}
-
-.status-badge--partly-signed,
-.status-badge--completed {
-    background: rgba(129, 199, 132, 0.15);
-    color: #2e7d32;
-}
-
-.status-badge--queued,
-.status-badge--sent {
-    background: rgba(255, 183, 77, 0.15);
-    color: #e65100;
-}
-
-.status-badge--deleted,
-.status-badge--rejected,
-.status-badge--withdrawn {
-    background: rgba(229, 115, 115, 0.15);
-    color: #c62828;
-}
-
-.status-badge--created,
-.status-badge--saved {
-    background: rgba(100, 181, 246, 0.15);
-    color: #1565c0;
-}
-
-.status-dot {
-    width: 6px;
-    height: 6px;
-    border-radius: 50%;
-}
-
-.status-dot--green {
-    background: #81c784;
-}
-
-.status-dot--orange {
-    background: #ffb74d;
-}
-
-.status-dot--red {
-    background: #e57373;
-}
-
-.status-dot--blue {
-    background: #64b5f6;
-}
-
-.receiver-badge {
-    display: inline-flex;
-    align-items: center;
-    gap: 0.25rem;
-    padding: 0.125rem 0.5rem;
-    background: #f3f4f6;
-    border-radius: 4px;
-    font-size: 0.75rem;
-    color: #374151;
-    white-space: nowrap;
-}
-
-.receiver-badge--signed {
-    background: rgba(129, 199, 132, 0.15);
-    color: #2e7d32;
-}
-
-.receiver-badge--unsigned {
-    background: rgba(229, 115, 115, 0.15);
-    color: #c62828;
-}
-
-@@media (max-width: 768px) {
-    .sender-action-bar {
-        padding: 1rem 1.25rem;
-    }
-
-    .sender-action-bar__inner {
-        flex-wrap: wrap;
-    }
-
-    .sender-toolbar {
-        width: 100%;
-        justify-content: flex-start;
-    }
-
-    .sender-title {
-        font-size: 1.125rem;
-    }
-
-    .sender-content {
-        padding: 0.75rem;
-    }
-
-    .sender-grid-wrapper {
-        padding: 1rem;
-    }
-
-    .sender-tabs {
-        padding: 0 1rem;
-        overflow-x: auto;
-    }
-
-    .sender-tab {
-        padding: 0.875rem 1rem;
-        font-size: 0.813rem;
-    }
-}

EnvelopeGenerator.ReceiverUI/wwwroot/index.html

@@ -12,7 +12,6 @@
     <link href="css/bootstrap/bootstrap.min.css" rel="stylesheet" />
     <link href="EnvelopeGenerator.ReceiverUI.styles.css" rel="stylesheet" />
     <link href="css/app.css" rel="stylesheet" />
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/lipis/flag-icons@7.2.3/css/flag-icons.min.css" />
     <style type="text/css">
         .splash-screen {
             display: flex;

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/Adjustment.cs

@@ -0,0 +1,44 @@
+namespace EnvelopeGenerator.Server.Client.Data {
+    public class Adjustment
+    {
+        public static Adjustment CreateBalanceForward(DateTime dt, int random)
+        {
+            var rnd = new DeterministicRandom(random);
+            Adjustment res = new Adjustment();
+            res.currentDateTime = dt;
+            res.currentDescription = "Balance Forward";
+            res.currentAmount = rnd.Random(10, 300) * 10;
+            return res;
+        }
+        public static Adjustment CreatePayment(DateTime dt, int random)
+        {
+            var rnd = new DeterministicRandom(random);
+            Adjustment res = new Adjustment();
+            res.currentDateTime = dt;
+            res.currentDescription = "Payment";
+            res.currentAmount = -rnd.Random(1, 40) * 10;
+            return res;
+        }
+        public static Adjustment CreateCharge(DateTime dt, int random)
+        {
+            var rnd = new DeterministicRandom(random);
+            Adjustment res = new Adjustment();
+            res.currentDateTime = dt;
+            res.currentDescription = rnd.GetRandomItem(bills);
+            res.currentAmount = rnd.Random(10, 50) * 10;
+            return res;
+        }
+
+        DateTime currentDateTime;
+        string currentDescription = "";
+        double currentAmount = 0;
+        static readonly string[] bills = new string[] { "Bill - Insurance", "Bill - Electricity", "Bill - Rent", "Bill - Phone", "Bill - Office Supplies" };
+        public DateTime Date { get { return currentDateTime; } }
+        public string Description { get { return currentDescription; } }
+        public double Amount { get { return currentAmount; } }
+
+        public Adjustment()
+        {
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/Customer.cs

@@ -0,0 +1,64 @@
+using DevExpress.DataAccess.Sql;
+using DevExpress.DataAccess.Sql.DataApi;
+
+namespace EnvelopeGenerator.Server.Client.Data {
+    public class Customer {
+        static List<Customer> currentCustomers = new List<Customer>();
+
+        public static List<Customer> Customers { get { return currentCustomers; } }
+        static Customer() {
+            try {
+                SqlDataSource ds = new SqlDataSource("NWindConnectionString");
+                SelectQuery query = SelectQueryFluentBuilder
+                    .AddTable("Customers")
+                    .SelectAllColumns()
+                    .Build("Customers");
+                ds.Queries.Add(query);
+                ds.RebuildResultSchema();
+                ds.Fill();
+                ITable src = ds.Result["Customers"];
+                foreach(var row in src) {
+                    currentCustomers.Add(new Customer() {
+                        CustomerID = row.GetValue<string>("CustomerID"),
+                        Address = row.GetValue<string>("Address"),
+                        CompanyName = row.GetValue<string>("CompanyName"),
+                        ContactName = row.GetValue<string>("ContactName"),
+                        ContactTitle = row.GetValue<string>("ContactTitle"),
+                        Country = row.GetValue<string>("Country"),
+                        City = row.GetValue<string>("City"),
+                        Fax = row.GetValue<string>("Fax"),
+                        Phone = row.GetValue<string>("Phone"),
+                        PostalCode = row.GetValue<string>("PostalCode"),
+                        Region = row.GetValue<string>("Region")
+                    });
+                }
+            } catch {
+                currentCustomers.Add(new Customer() { 
+                    Address = "Obere Str. 57",
+                    City = "Berlin",
+                    CompanyName = "Alfreds Futterkiste",
+                    ContactName = "Maria Anders",
+                    ContactTitle = "Sales Representative",
+                    Country = "Germany",
+                    CustomerID = "ALFKI",
+                    Fax = "030-0076545",
+                    Phone = "030-0074321",
+                    PostalCode = "12209"
+                });
+            }
+        }
+
+        public string CustomerID { get; set; }
+        public string CompanyName { get; set; }
+        public string ContactName { get; set; }
+        public string ContactTitle { get; set; }
+        public string Address { get; set; }
+        public string City { get; set; }
+        public string PostalCode { get; set; }
+        public string Region { get; set; }
+        public string Country { get; set; }
+        public string Phone { get; set; }
+        public string Fax { get; set; }
+
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/DataItem.cs

@@ -0,0 +1,71 @@
+namespace EnvelopeGenerator.Server.Client.Data {
+    public class DataItem {
+        static readonly string[] accountType = new string[] { "Energy", "Manufacturing", "Estate", "Food", "Services" };
+        public string CustomerID { get; set; }
+        public string CompanyName { get; set; }
+        public string ContactName { get; set; }
+        public string ContactTitle { get; set; }
+        public string Address { get; set; }
+        public string City { get; set; }
+        public string PostalCode { get; set; }
+        public string Region { get; set; }
+        public string Country { get; set; }
+        public string Phone { get; set; }
+        public string Fax { get; set; }
+        public string Email { get; set; }
+        public string Invoice { get; set; }
+        public string CustomerAccount { get; set; }
+        public string CustomerIdentifiers { get; set; }
+        public DateTime BillingDate { get; set; }
+        public DateTime BillingPeriodStart { get; set; }
+        public DateTime BillingPeriodEnd { get; set; }
+        public string Terms { get; set; }
+        public string TermsID { get; set; }
+        public Adjustment[] Adjustments { get; set; }
+
+        public DataItem(int i) {
+            var rnd = new DeterministicRandom(i);
+            Customer c = rnd.GetRandomItem(Customer.Customers);
+            CustomerID = c.CustomerID;
+            CompanyName = c.CompanyName;
+            ContactName = c.ContactName;
+            ContactTitle = c.ContactTitle;
+            Address = c.Address;
+            City = c.City;
+            PostalCode = c.PostalCode;
+            Region = c.Region;
+            Country = c.Country;
+            Phone = c.Phone;
+            Fax = c.Fax;
+            Email = ContactName.Split(' ')[0].Replace(' ', '.').ToLower() + "@" + CompanyName.Split(' ')[0].ToLower() + ".com";
+            Invoice = string.Format("{0}{1}-{2}", rnd.RandomChar, rnd.Random(100, 1000), rnd.Random(100, 1000));
+            CustomerAccount = rnd.GetRandomItem(accountType);
+            CustomerIdentifiers = string.Format("{0}-{1}", rnd.Random(1000, 10000), rnd.Random(10, 100));
+            BillingPeriodStart = rnd.RandomTime();
+            BillingPeriodEnd = rnd.RandomTime(BillingPeriodStart, 7 * 24, 30 * 24);
+            BillingDate = rnd.RandomTime(BillingPeriodEnd, 7 * 24, 30 * 24);
+            Term currentTerm = rnd.GetRandomItem(Term.Terms);
+            Terms = currentTerm.Name;
+
+            int adjustmentsCount = rnd.Random(6) + 4;
+            Adjustments = new Adjustment[adjustmentsCount];
+            int h = (int)((BillingPeriodEnd - BillingPeriodStart).TotalHours / adjustmentsCount);
+
+            Adjustments[0] = Adjustment.CreateBalanceForward(rnd.RandomTime(BillingPeriodStart, 0, h), rnd.Random(10000));
+
+            int[] items = rnd.RandomList(adjustmentsCount - 1, 2);
+
+            for(int j = 1; j < Adjustments.Length; j++) {
+                DateTime nextDate = rnd.RandomTime(BillingPeriodStart.AddHours(h * j), 0, h);
+                    switch(items[j - 1]) {
+                        case 0:
+                            Adjustments[j] = Adjustment.CreateCharge(nextDate, rnd.Random(10000));
+                            break;
+                        case 1:
+                            Adjustments[j] = Adjustment.CreatePayment(nextDate, rnd.Random(10000));
+                            break;
+                    }
+            }
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/DataItemList.cs

@@ -0,0 +1,70 @@
+using System.Collections;
+
+namespace EnvelopeGenerator.Server.Client.Data {
+    public class DataItemList : IList<DataItem>, IList {
+        readonly int rowCount;
+
+        public DataItem this[int index] { get { return new DataItem(index); } set { } }
+        public int Count { get { return rowCount; } }
+        public bool IsReadOnly { get { return false; } }
+        public bool IsFixedSize { get { return false; } }
+        public object SyncRoot { get { return true; } }
+        public bool IsSynchronized { get { return true; } }
+        object IList.this[int index] { get { return new DataItem(index); } set { } }
+
+        public DataItemList(int rowCount) {
+            this.rowCount = rowCount;
+        }
+        public IEnumerator<DataItem> GetEnumerator() {
+            throw new NotImplementedException();
+        }
+        public int Add(object value) {
+            throw new NotImplementedException();
+        }
+        public bool Contains(object value) {
+            throw new NotImplementedException();
+        }
+        public void Clear() {
+            throw new NotImplementedException();
+        }
+        public int IndexOf(object value) {
+            throw new NotImplementedException();
+        }
+        public void Insert(int index, object value) {
+            throw new NotImplementedException();
+        }
+        public void Remove(object value) {
+            throw new NotImplementedException();
+        }
+        public void RemoveAt(int index) {
+            throw new NotImplementedException();
+        }
+        public void CopyTo(Array array, int index) {
+            throw new NotImplementedException();
+        }
+        IEnumerator IEnumerable.GetEnumerator() {
+            throw new NotImplementedException();
+        }
+        public int IndexOf(DataItem item) {
+            throw new NotImplementedException();
+        }
+        public void Insert(int index, DataItem item) {
+            throw new NotImplementedException();
+        }
+        public void Add(DataItem item) {
+            throw new NotImplementedException();
+        }
+        public bool Contains(DataItem item) {
+            throw new NotImplementedException();
+        }
+        public void CopyTo(DataItem[] array, int arrayIndex) {
+            throw new NotImplementedException();
+        }
+        public bool Remove(DataItem item) {
+            throw new NotImplementedException();
+        }
+        void ICollection<DataItem>.CopyTo(DataItem[] array, int arrayIndex) {
+            CopyTo(array, arrayIndex);
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/DeterministicRandom.cs

@@ -0,0 +1,60 @@
+namespace EnvelopeGenerator.Server.Client.Data {
+    class DeterministicRandom {
+        const int randomCount = 10000;
+        static readonly int[] deterministicRandomNumbers;
+        static readonly DateTime time;
+        int rnd;
+        int Next {
+            get {
+                rnd = deterministicRandomNumbers[rnd % randomCount];
+                return rnd;
+            }
+        }
+        public char RandomChar {
+            get {
+                return (char)((int)'A' + Random(0, 26));
+            }
+        }
+        public int[] RandomList(int count, int to) {
+            int[] res = new int[count];
+            for(int i = 0; i < Math.Min(count, to); i++)
+                res[i] = i;
+            for(int i = to; i < count; i++)
+                res[i] = Random(to);
+
+            for(int i = 0; i < count; i++) {
+                int ind = Random(count);
+                int temp = res[ind];
+                res[ind] = res[i];
+                res[i] = temp;
+            }
+            return res;
+        }
+        public int Random(int to) {
+            return Random(0, to);
+        }
+        public int Random(int from, int to) {
+            return Next % Math.Max(1, to - from) + from;
+        }
+        public T GetRandomItem<T>(IList<T> list) {
+            return list[Next % list.Count];
+        }
+        public DateTime RandomTime() {
+            return RandomTime(time, 0, 30 * 24);
+        }
+        public DateTime RandomTime(DateTime from, int fromHours, int toHours) {
+            return from.AddHours(Next % (toHours - fromHours) + fromHours);
+        }
+
+        static DeterministicRandom() {
+            time = DateTime.Now.AddDays(-62);
+            Random currentRandom = new Random(randomCount);
+            deterministicRandomNumbers = new int[randomCount];
+            for(int i = 0; i < randomCount; i++)
+                deterministicRandomNumbers[i] = currentRandom.Next(randomCount);
+        }
+        public DeterministicRandom(int i) {
+            this.rnd = i + (i >> 10) + (i >> 20);
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Data/Term.cs

@@ -0,0 +1,15 @@
+namespace EnvelopeGenerator.Server.Client.Data {
+    public struct Term {
+        public static readonly Term[] Terms = new Term[] {
+            new Term("Payment seven days after invoice date" ),
+            new Term("Payment ten days after invoice date" ),
+            new Term("End of month" ),
+            new Term("21st of the month following invoice date" ),
+        };
+        readonly string currentName;
+        public string Name { get { return currentName; } }
+        public Term(string currentName) {
+            this.currentName = currentName;
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/EnvelopeGenerator.Server.Client.csproj

@@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <NoDefaultLaunchSettingsFile>true</NoDefaultLaunchSettingsFile>
+    <StaticWebAssetProjectMode>Default</StaticWebAssetProjectMode>
+    <WasmBuildNative>true</WasmBuildNative>
+    <InvariantGlobalization>false</InvariantGlobalization>
+    <BlazorWebAssemblyLoadAllGlobalizationData>true</BlazorWebAssemblyLoadAllGlobalizationData>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DevExpress.Blazor.PdfViewer" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Blazor.Reporting.JSBasedControls" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Blazor.Reporting.Viewer" Version="25.2.3" />
+    <PackageReference Include="DevExpress.Drawing.Skia" Version="25.2.3" />
+    <PackageReference Include="HarfBuzzSharp.NativeAssets.WebAssembly" Version="8.3.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.9" />
+    <PackageReference Include="SkiaSharp.NativeAssets.WebAssembly" Version="3.119.1" />
+    <PackageReference Include="SkiaSharp.Views.Blazor" Version="3.119.1" />
+    <NativeFileReference Include="$(HarfBuzzSharpStaticLibraryPath)\2.0.23\*.a" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.22" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.11" PrivateAssets="all" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Update="PredefinedReports\Report.cs">
+      <SubType>XtraReport</SubType>
+    </Compile>
+  </ItemGroup>
+
+</Project>

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Layout/Header.razor

@@ -0,0 +1,21 @@
+<nav class="navbar header-navbar p-0">
+    <button class="navbar-toggler bg-primary d-block" @onclick="OnToggleClick">
+        <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="ms-3 fw-bold title pe-4">EnvelopeGenerator.ReceiverUI</div>
+</nav>
+
+@code {
+    [Parameter] public bool ToggleOn { get; set; }
+    [Parameter] public EventCallback<bool> ToggleOnChanged { get; set; }
+
+    async Task OnToggleClick() => await Toggle();
+
+    async Task Toggle(bool? value = null) {
+        var newValue = value ?? !ToggleOn;
+        if(ToggleOn != newValue) {
+            ToggleOn = newValue;
+            await ToggleOnChanged.InvokeAsync(ToggleOn);
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Layout/MainLayout.razor

@@ -0,0 +1,28 @@
+@using EnvelopeGenerator.Server.Client.Services;
+@inherits LayoutComponentBase
+
+<div class="page">
+<main>
+        <article class="content">
+            @Body
+        </article>
+    </main>
+    <footer class="receiver-footer">
+        <span>&copy; SignFlow 2023-2024 <a href="https://digitaldata.works" target="_blank" rel="noopener">Digital Data GmbH</a></span>
+        <span class="receiver-footer__sep">&#124;</span>
+        <a href="docs/privacy-policy.de-DE.html" target="_blank" rel="noopener">Datenschutz</a>
+    </footer>
+</div>
+
+@code {
+    [Inject] IHttpClientFactory HttpClientFactory { get; set; } = default!;
+    
+    List<string> RequiredFonts = new() {
+        "opensans.ttf"
+    };
+
+    protected async override Task OnInitializedAsync() {
+        await FontLoader.LoadFonts(HttpClientFactory, RequiredFonts);
+        await base.OnInitializedAsync();
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Layout/MainLayout.razor.css

@@ -0,0 +1,18 @@
+#blazor-error-ui {
+    background: lightyellow;
+    bottom: 0;
+    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
+    display: none;
+    left: 0;
+    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
+    position: fixed;
+    width: 100%;
+    z-index: 1000;
+}
+
+    #blazor-error-ui .dismiss {
+        cursor: pointer;
+        position: absolute;
+        right: 0.75rem;
+        top: 0.5rem;
+    }

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Layout/NavMenu.razor

@@ -0,0 +1,46 @@
+<div class="top-row ps-3 navbar navbar-dark">
+    <div class="container-fluid">
+        <a class="navbar-brand" href="">EnvelopeGenerator.ReceiverUI</a>
+        <button title="Navigation menu" class="navbar-toggler" @onclick="ToggleNavMenu">
+            <span class="navbar-toggler-icon"></span>
+        </button>
+    </div>
+</div>
+
+<div class="@NavMenuCssClass" @onclick="ToggleNavMenu">
+    <nav class="flex-column">
+        @*
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="oi oi-home" aria-hidden="true"></span> Home
+            </NavLink>
+        </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="documentviewer">
+                <span class="oi oi-plus" aria-hidden="true"></span> Document Viewer (JS-Based)
+            </NavLink>
+        </div>
+        *@
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="receiver">
+                <span class="oi oi-plus" aria-hidden="true"></span> Empfänger-UI
+            </NavLink>
+        </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="sender">
+                <span class="oi oi-plus" aria-hidden="true"></span> Umschlag-UI
+            </NavLink>
+        </div>
+    </nav>
+</div>
+
+@code {
+    private bool collapseNavMenu = true;
+
+    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+
+    private void ToggleNavMenu()
+    {
+        collapseNavMenu = !collapseNavMenu;
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/AnnotationDto.cs

@@ -0,0 +1,32 @@
+namespace EnvelopeGenerator.Server.Client.Models;
+
+/// <summary>
+/// Represents a pre-assigned signature annotation position on a specific page.
+/// <br/><br/>
+/// <b>Coordinate unit (X, Y):</b> Inches (GdPicture14 native unit),
+/// origin at the <b>top-left</b> corner of the page, both axes increase downward/rightward.
+/// <br/><br/>
+/// <b>Conversion to DevExpress:</b> Multiply by 100 (DX uses 1/100 inch).
+/// Convert: <c>xDX = xInches * 100.0</c>
+/// <br/>
+/// <b>Conversion to PDF Points:</b> Multiply by 72 (1 inch = 72 points).
+/// Convert: <c>xPt = xInches * 72.0</c>
+/// <br/>
+/// <b>Y-axis for PDF (bottom-left origin):</b> Flip required for iText7.
+/// Convert: <c>yPt = (pageHeightInches - yInches - elemHeightInches) * 72.0</c>
+/// </summary>
+[Obsolete("Use SignatureDto with SignatureService.")]
+public record AnnotationDto
+{
+    /// <summary>Unique identifier of the annotation.</summary>
+    public long Id { get; init; }
+
+    /// <summary>1-based page number within the document.</summary>
+    public int Page { get; init; }
+
+    /// <summary>Horizontal position in INCHES from the left edge of the page.</summary>
+    public double X { get; init; }
+
+    /// <summary>Vertical position in INCHES from the top edge of the page.</summary>
+    public double Y { get; init; }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/Constants/SenderAppType.cs

@@ -0,0 +1,8 @@
+namespace EnvelopeGenerator.Server.Client.Models.Constants
+{
+    public enum SenderAppType
+    {
+        LegacyFormApp = 0,
+        ReceiverUIBlazorApp = 1
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/Constants/UnitOfLength.cs

@@ -0,0 +1,65 @@
+namespace EnvelopeGenerator.Server.Client.Models.Constants;
+
+/// <summary>
+/// Represents the unit of measurement for coordinate values in signature positioning.
+/// Used for converting coordinates between different systems (GdPicture14, PDF.js, iText7).
+/// </summary>
+public enum UnitOfLength
+{
+    /// <summary>
+    /// Inch unit (1 inch = 25.4 mm).
+    /// This is the native unit used by GdPicture14 (EnvelopeGenerator.Form - Legacy VB.NET app).
+    /// Database stores all coordinates (X, Y, Width, Height) in INCHES.
+    /// </summary>
+    /// <remarks>
+    /// <b>Source:</b> GdPicture14.Annotations.AnnotationStickyNote uses INCHES natively.
+    /// <br/>
+    /// <b>Evidence:</b> VB.NET code directly assigns database values to annotation properties without conversion:
+    /// <code>
+    /// oAnnotation.Left = CSng(pElement.X)   ' Direct assignment → INCHES
+    /// oAnnotation.Top = CSng(pElement.Y)
+    /// </code>
+    /// <b>Standard Page Dimensions:</b>
+    /// <list type="bullet">
+    ///   <item>A4: 8.27" × 11.69" (210mm × 297mm)</item>
+    ///   <item>Letter: 8.5" × 11"</item>
+    /// </list>
+    /// </remarks>
+    Inch = 0,
+
+    /// <summary>
+    /// PDF Point unit (1 point = 1/72 inch).
+    /// This is the standard unit used by PDF specification and PDF.js viewer.
+    /// </summary>
+    /// <remarks>
+    /// <b>Definition:</b> According to PDF specification and Microsoft documentation:
+    /// <br/>
+    /// <i>"PDF pages are sized in point units. 1 pt == 1/72 inch"</i>
+    /// <br/><br/>
+    /// <b>Conversion Formula:</b>
+    /// <code>
+    /// points = inches * 72.0
+    /// inches = points / 72.0
+    /// </code>
+    /// <b>Important:</b> Point ≠ Pixel!
+    /// <list type="bullet">
+    ///   <item><b>Point (pt):</b> Device-independent unit (always 1/72 inch)</item>
+    ///   <item><b>Pixel (px):</b> Device-dependent unit (varies with screen DPI)</item>
+    ///   <item>At 72 DPI: 1 point = 1 pixel (coincidence)</item>
+    ///   <item>At 96 DPI: 1 point ≈ 1.33 pixels</item>
+    ///   <item>At 300 DPI: 1 point ≈ 4.17 pixels</item>
+    /// </list>
+    /// <b>Standard Page Dimensions (in points):</b>
+    /// <list type="bullet">
+    ///   <item>A4: 595 × 842 points (8.27" × 11.69" × 72)</item>
+    ///   <item>Letter: 612 × 792 points (8.5" × 11" × 72)</item>
+    /// </list>
+    /// <b>Usage in EnvelopeGenerator:</b>
+    /// <list type="bullet">
+    ///   <item>PDF.js viewer expects coordinates in points</item>
+    ///   <item>iText7 library uses points for PDF manipulation</item>
+    ///   <item>PSPDFKit (Web) uses points for annotation placement</item>
+    /// </list>
+    /// </remarks>
+    Point
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/EnvelopeReceiverDto.cs

@@ -0,0 +1,105 @@
+namespace EnvelopeGenerator.Server.Client.Models;
+
+/// <summary>
+/// Client-side model for the envelope receiver returned by
+/// <c>GET api/EnvelopeReceiver/{envelopeKey}</c>.
+/// </summary>
+public record EnvelopeReceiverDto
+{
+    public int EnvelopeId { get; init; }
+    public int ReceiverId { get; init; }
+    public int Sequence { get; init; }
+
+    public string? Name { get; init; }
+    public string? JobTitle { get; init; }
+    public string? CompanyName { get; init; }
+    public string? PrivateMessage { get; init; }
+
+    public DateTime AddedWhen { get; init; }
+    public DateTime? ChangedWhen { get; init; }
+    public bool HasPhoneNumber { get; init; }
+
+    public EnvelopeClientDto? Envelope { get; init; }
+    public ReceiverClientDto? Receiver { get; init; }
+}
+
+/// <summary>
+/// Client-side model for the envelope data embedded in <see cref="EnvelopeReceiverDto"/>.
+/// </summary>
+public record EnvelopeClientDto
+{
+    public int Id { get; init; }
+    public int UserId { get; init; }
+    public int Status { get; init; }
+    public string StatusName { get; init; } = string.Empty;
+    public string Uuid { get; init; } = string.Empty;
+    public string Title { get; init; } = string.Empty;
+    public string Message { get; init; } = string.Empty;
+    public DateTime AddedWhen { get; init; }
+    public DateTime? ChangedWhen { get; init; }
+    public string Language { get; init; } = "de-DE";
+    public int? EnvelopeTypeId { get; init; }
+    public string? EnvelopeTypeTitle { get; init; }
+    public int? ContractType { get; init; }
+    public int? CertificationType { get; init; }
+    public bool UseAccessCode { get; init; }
+    public bool TFAEnabled { get; init; }
+    public IEnumerable<DocumentClientDto>? Documents { get; init; }
+    public EnvelopeSenderDto? User { get; init; }
+}
+
+/// <summary>
+/// Sender (user) information embedded in <see cref="EnvelopeClientDto"/>.
+/// </summary>
+public record EnvelopeSenderDto
+{
+    public int Id { get; init; }
+    public string? Username { get; init; }
+    public string? FullName { get; init; }
+    public string? Email { get; init; }
+}
+
+/// <summary>
+/// Client-side model for a document embedded in <see cref="EnvelopeClientDto"/>.
+/// </summary>
+public record DocumentClientDto
+{
+    public int Id { get; init; }
+    public int EnvelopeId { get; init; }
+    public DateTime AddedWhen { get; init; }
+    public IEnumerable<SignatureClientDto>? Elements { get; init; }
+}
+
+/// <summary>
+/// Client-side model for a signature/annotation element embedded in <see cref="DocumentClientDto"/>.
+/// </summary>
+public record SignatureClientDto
+{
+    public int Id { get; init; }
+    public int DocumentId { get; init; }
+    public int ReceiverId { get; init; }
+    public int ElementType { get; init; }
+    public double X { get; init; }
+    public double Y { get; init; }
+    public double Width { get; init; }
+    public double Height { get; init; }
+    public int Page { get; init; }
+    public bool Required { get; init; }
+    public string? Tooltip { get; init; }
+    public bool ReadOnly { get; init; }
+    public int AnnotationIndex { get; init; }
+    public DateTime AddedWhen { get; init; }
+    public DateTime? ChangedWhen { get; init; }
+}
+
+/// <summary>
+/// Client-side model for the receiver data embedded in <see cref="EnvelopeReceiverDto"/>.
+/// </summary>
+public record ReceiverClientDto
+{
+    public int Id { get; init; }
+    public string? EmailAddress { get; init; }
+    public string? Signature { get; init; }
+    public DateTime AddedWhen { get; init; }
+    public DateTime? TfaRegDeadline { get; init; }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/SignatureCaptureDto.cs

@@ -0,0 +1,62 @@
+namespace EnvelopeGenerator.Server.Client.Models;
+
+/// <summary>
+/// Represents a captured signature with metadata created by the receiver in the signature popup.
+/// This model holds the signature image (as base64 data URL) along with signer information
+/// used for rendering applied signatures on the PDF canvas.
+/// </summary>
+/// <remarks>
+/// <b>Used in:</b> EnvelopeViewer.razor signature popup workflow
+/// <br/>
+/// <b>Creation:</b> User draws/types/uploads signature and fills required fields
+/// <br/>
+/// <b>Storage:</b> Session-only (Blazor component state, lost on page refresh)
+/// <br/>
+/// <b>Rendering:</b> Applied signatures display: Image + Separator + Name/Position/Place/Date
+/// </remarks>
+public sealed record SignatureCaptureDto
+{
+    /// <summary>
+    /// Base64-encoded data URL of the signature image.
+    /// <br/>
+    /// <b>Format:</b> <c>data:image/png;base64,iVBORw0KG...</c>
+    /// <br/>
+    /// <b>Source:</b> Canvas.toDataURL() from signature pad (draw/text/image tabs)
+    /// <br/>
+    /// <b>Usage:</b> Set as <c>img.src</c> in applied signature overlay
+    /// </summary>
+    public required string DataUrl { get; init; }
+
+    /// <summary>
+    /// Full name of the signer (first and last name).
+    /// <br/>
+    /// <b>Required:</b> Yes (validated in popup)
+    /// <br/>
+    /// <b>Display:</b> Bold text in applied signature block
+    /// <br/>
+    /// <b>Example:</b> "Max Mustermann"
+    /// </summary>
+    public required string FullName { get; init; }
+
+    /// <summary>
+    /// Job title or position of the signer.
+    /// <br/>
+    /// <b>Required:</b> No (optional field)
+    /// <br/>
+    /// <b>Display:</b> Normal weight text between name and place/date
+    /// <br/>
+    /// <b>Example:</b> "Geschäftsführer" or empty string
+    /// </summary>
+    public string Position { get; init; } = string.Empty;
+
+    /// <summary>
+    /// Location/place where the signature was created.
+    /// <br/>
+    /// <b>Required:</b> Yes (validated in popup)
+    /// <br/>
+    /// <b>Display:</b> Shown with current date in German format (dd.MM.yyyy)
+    /// <br/>
+    /// <b>Example:</b> "Berlin" ? rendered as "Berlin, 26.01.2025"
+    /// </summary>
+    public required string Place { get; init; }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Models/SignatureDto.cs

@@ -0,0 +1,101 @@
+using EnvelopeGenerator.Server.Client.Models.Constants;
+
+namespace EnvelopeGenerator.Server.Client.Models;
+
+/// <summary>
+/// Represents a signature position on a PDF page.
+/// Coordinates stored in INCHES (GdPicture14 native unit).
+/// Origin: Top-left corner, X increases right, Y increases down.
+/// </summary>
+public class SignatureDto
+{
+    /// <summary>Unique identifier.</summary>
+    public int Id { get; init; }
+
+    private double _x;
+    private double _y;
+
+    /// <summary>Horizontal position in INCHES from left edge.</summary>
+    public double X 
+    { 
+        get => _x * Factor;
+        init => _x = value; 
+    }
+
+    /// <summary>Vertical position in INCHES from top edge.</summary>
+    public double Y 
+    { 
+        get => _y * Factor;
+        init => _y = value; 
+    }
+
+    /// <summary>1-based page number.</summary>
+    public int Page { get; init; }
+
+    /// <summary>Sender application type that created this signature.</summary>
+    public SenderAppType SenderAppType { get; init; }
+
+    private UnitOfLength _unitOfLength;
+
+    public SignatureDto Convert(UnitOfLength unitOfLength)
+    {
+        _unitOfLength = unitOfLength;
+        return this;
+    }
+
+    public double Factor
+    {
+        get
+        {
+            if (SenderAppType != SenderAppType.LegacyFormApp)
+            {
+                throw new NotImplementedException(
+                    $"SenderAppType '{SenderAppType}' is not yet implemented. " +
+                    $"Currently, only '{nameof(SenderAppType.LegacyFormApp)}' is supported. " +
+                    $"Future implementations will handle '{nameof(SenderAppType.ReceiverUIBlazorApp)}' and other types.");
+            }
+
+            // LegacyFormApp uses GdPicture14 with INCHES
+            return _unitOfLength switch
+            {
+                UnitOfLength.Inch => 1.0,   // No conversion needed: INCHES → INCHES
+                UnitOfLength.Point => 72.0, // INCHES → PDF Points: 1 inch = 72 points (PDF standard, NOT pixels!)
+                _ => throw new InvalidOperationException(
+                    $"Unknown UnitOfLength: {_unitOfLength}. Expected '{nameof(UnitOfLength.Inch)}' or '{nameof(UnitOfLength.Point)}'.")
+            };
+        }
+    }
+}
+
+public static class SignatureDtoExtensions
+{
+    /// <summary>
+    /// Converts all signatures in the collection to the specified unit of length.
+    /// </summary>
+    /// <typeparam name="T">Type of the collection (IEnumerable, List, etc.)</typeparam>
+    /// <param name="signatures">Collection of SignatureDto objects to convert.</param>
+    /// <param name="unitOfLength">Target unit of measurement (Inch or Point).</param>
+    /// <returns>The same collection with all signatures converted to the specified unit.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when signatures collection is null.</exception>
+    /// <remarks>
+    /// <b>Usage:</b>
+    /// <code>
+    /// var signatures = await SignatureService.GetAsync(envelopeKey);
+    /// var convertedSignatures = signatures.ConvertAll(UnitOfLength.Point);
+    /// </code>
+    /// <b>Note:</b> This method modifies each SignatureDto object in place and returns the same collection.
+    /// </remarks>
+    public static T Convert<T>(this T signatures, UnitOfLength unitOfLength) 
+        where T : IEnumerable<SignatureDto>
+    {
+        if (signatures == null)
+            throw new ArgumentNullException(nameof(signatures));
+
+        foreach (var signature in signatures)
+        {
+            signature.Convert(unitOfLength);
+        }
+
+        return signatures;
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Options/ApiOptions.cs

@@ -0,0 +1,10 @@
+namespace EnvelopeGenerator.Server.Client.Options;
+
+public class ApiOptions
+{
+    public const string SectionName = "Api";
+
+    public string BaseUrl { get; set; } = string.Empty;
+
+    public bool UsePredefinedReports { get; set; } = false;
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Options/PdfViewerOptions.cs

@@ -0,0 +1,71 @@
+namespace EnvelopeGenerator.Server.Client.Options;
+
+public class PdfViewerOptions
+{
+    public const string SectionName = "PdfViewer";
+
+    /// <summary>
+    /// Base scale for thumbnail rendering (0.2 - 1.5 recommended)
+    /// Higher values = better quality but slower rendering
+    /// Default: 0.75
+    /// </summary>
+    public double ThumbnailBaseScale { get; set; } = 0.75;
+
+    /// <summary>
+    /// Enable HiDPI/Retina support for thumbnails
+    /// Default: true
+    /// </summary>
+    public bool ThumbnailEnableHiDPI { get; set; } = true;
+
+    /// <summary>
+    /// Maximum device pixel ratio multiplier for thumbnails (1.0 - 3.0)
+    /// Caps DPR to avoid excessive memory usage on 4K+ displays
+    /// Default: 2.0
+    /// </summary>
+    public double ThumbnailMaxDPR { get; set; } = 2.0;
+
+    /// <summary>
+    /// Enable HiDPI/Retina support for main PDF canvas
+    /// Default: true
+    /// </summary>
+    public bool MainCanvasEnableHiDPI { get; set; } = true;
+
+    /// <summary>
+    /// Maximum device pixel ratio multiplier for main canvas (1.0 - 3.0)
+    /// Default: 2.0
+    /// </summary>
+    public double MainCanvasMaxDPR { get; set; } = 2.0;
+
+    /// <summary>
+    /// Enable smooth zoom transition (fade effect)
+    /// Default: true
+    /// </summary>
+    public bool EnableSmoothZoom { get; set; } = true;
+
+    /// <summary>
+    /// Zoom transition duration in milliseconds (50 - 500)
+    /// Default: 150
+    /// </summary>
+    public int ZoomTransitionDuration { get; set; } = 150;
+
+    /// <summary>
+    /// Opacity during rendering (0.0 - 1.0)
+    /// Lower values = more visible fade effect
+    /// Default: 0.85
+    /// </summary>
+    public double RenderingOpacity { get; set; } = 0.85;
+
+    /// <summary>
+    /// Delay between thumbnail renders in milliseconds (10 - 200)
+    /// Higher values = less browser stress, slower initial load
+    /// Default: 50
+    /// </summary>
+    public int ThumbnailRenderDelay { get; set; } = 50;
+
+    /// <summary>
+    /// Zoom step percentage (1 - 50)
+    /// Controls how much zoom changes per click or scroll
+    /// Default: 5 (5% per step)
+    /// </summary>
+    public int ZoomStepPercentage { get; set; } = 5;
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Pages/EnvelopeSenderPage.razor

@@ -0,0 +1,8 @@
+@page "/sender"
+@rendermode InteractiveWebAssembly
+
+<h3>EnvelopeSender</h3>
+
+@code {
+
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Pages/Index.razor

@@ -0,0 +1,72 @@
+@page "/"
+@rendermode InteractiveWebAssembly
+@inject IJSRuntime JS
+
+<link href="_content/DevExpress.Blazor.Themes/blazing-berry.bs5.min.css" rel="stylesheet" />
+
+<div class="home-page-wrapper">
+
+    <div class="home-hero-header">
+        <div class="home-hero-header__inner">
+            <svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" fill="currentColor" class="home-hero-header__icon" viewBox="0 0 16 16">
+                <path d="M0 4a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V4Zm2-1a1 1 0 0 0-1 1v.217l7 4.2 7-4.2V4a1 1 0 0 0-1-1H2Zm13 2.383-4.708 2.825L15 11.105V5.383Zm-.034 6.876-5.64-3.471L8 9.583l-1.326-.795-5.64 3.47A1 1 0 0 0 2 13h12a1 1 0 0 0 .966-.741ZM1 11.105l4.708-2.897L1 5.383v5.722Z"/>
+            </svg>
+            <div>
+                <h1 class="home-hero-header__title">SignFlow</h1>
+                <p class="home-hero-header__subtitle">Willkommen im eSign-Portal</p>
+            </div>
+        </div>
+    </div>
+
+    <div class="home-content">
+        <div class="home-card card shadow border-0">
+            <div class="card-body p-4 p-md-5">
+
+                <p class="text-muted mb-4" style="font-size: 0.92rem; line-height: 1.7; text-align: justify; text-align-last: left; min-height: calc(0.92rem * 1.7 * 9);">
+                    <span id="home-description"></span>
+                </p>
+
+                <div class="mt-4 pt-3 border-top">
+                    <div class="d-flex flex-wrap justify-content-center gap-3">
+                        <div class="home-feature-badge">
+                            <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" fill="currentColor" class="me-1" viewBox="0 0 16 16">
+                                <path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z"/>
+                            </svg>
+                            Sicherer Zugang
+                        </div>
+                        <div class="home-feature-badge">
+                            <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" fill="currentColor" class="me-1" viewBox="0 0 16 16">
+                                <path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/>
+                            </svg>
+                            Digitale Unterschrift
+                        </div>
+                        <div class="home-feature-badge">
+                            <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" fill="currentColor" class="me-1" viewBox="0 0 16 16">
+                                <path d="M.5 9.9a.5.5 0 0 1 .5.5v2.5a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-2.5a.5.5 0 0 1 1 0v2.5a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2v-2.5a.5.5 0 0 1 .5-.5z"/>
+                                <path d="M7.646 11.854a.5.5 0 0 0 .708 0l3-3a.5.5 0 0 0-.708-.708L8.5 10.293V1.5a.5.5 0 0 0-1 0v8.793L5.354 8.146a.5.5 0 1 0-.708.708l3 3z"/>
+                            </svg>
+                            PDF-Export
+                        </div>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+    </div>
+
+</div>
+
+@code {
+    private const string HomePageDescription =
+        "Das digitale Unterschriftenportal ist eine Plattform, die entwickelt wurde, um Ihre Dokumente sicher zu unterschreiben und zu verwalten. " +
+        "Mit seiner benutzerfreundlichen Oberfläche können Sie Ihre Dokumente schnell hochladen, die Unterschriftsprozesse verfolgen und Ihre digitalen Unterschriftenanwendungen einfach durchführen. " +
+        "Dieses Portal beschleunigt Ihren Arbeitsablauf mit rechtlich gültigen Unterschriften und erhöht gleichzeitig die Sicherheit Ihrer Dokumente.";
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            await JS.InvokeVoidAsync("receiverSignature.startTyped", "home-description", HomePageDescription, 15);
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Pages/LoginReceiverPage.razor

@@ -0,0 +1,173 @@
+@page "/envelope/login/{EnvelopeKey}"
+@rendermode InteractiveWebAssembly
+@using EnvelopeGenerator.Server.Client.Services
+@inject AuthService AuthService
+@inject NavigationManager Navigation
+
+<link href="_content/DevExpress.Blazor.Themes/blazing-berry.bs5.min.css" rel="stylesheet" />
+
+<div class="login-page-wrapper d-flex align-items-center justify-content-center min-vh-100">
+    <div class="login-card card shadow border-0" style="max-width: 440px; width: 100%;">
+
+        <div class="card-header text-white text-center py-4 border-0" style="background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%); border-radius: calc(0.375rem - 1px) calc(0.375rem - 1px) 0 0;">
+            <div class="mb-2">
+                <svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" fill="currentColor" viewBox="0 0 16 16">
+                    <path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z" />
+                </svg>
+            </div>
+            <h5 class="mb-0 fw-semibold">Dokument öffnen</h5>
+            <p class="mb-0 mt-1 opacity-75" style="font-size: 0.85rem;">Sicherer Zugang mit Zugangscode</p>
+        </div>
+
+        <div class="card-body p-4">
+
+            <p class="text-muted mb-4" style="font-size: 0.875rem; line-height: 1.5;">
+                Bitte geben Sie den Zugangscode ein, den Sie per E-Mail erhalten haben, um das Dokument sicher zu öffnen.
+            </p>
+
+            @if (LoginResult == EnvelopeLoginResult.NotFound)
+            {
+                <div class="alert alert-warning d-flex align-items-start gap-2 py-2" role="alert">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" class="flex-shrink-0 mt-1" viewBox="0 0 16 16">
+                        <path d="M8.982 1.566a1.13 1.13 0 0 0-1.96 0L.165 13.233c-.457.778.091 1.767.98 1.767h13.713c.889 0 1.438-.99.98-1.767L8.982 1.566zM8 5c.535 0 .954.462.9.995l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 5.995A.905.905 0 0 1 8 5zm.002 6a1 1 0 1 1 0 2 1 1 0 0 1 0-2z" />
+                    </svg>
+                    <div>
+                        <strong>Dokument nicht gefunden.</strong><br />
+                        <span style="font-size:0.85rem;">Der angegebene Zugangscode konnte keinem Dokument zugeordnet werden. Bitte prüfen Sie den Link in Ihrer E-Mail.</span>
+                    </div>
+                </div>
+            }
+            else if (LoginResult == EnvelopeLoginResult.InvalidCode)
+            {
+                <div class="alert alert-danger d-flex align-items-start gap-2 py-2" role="alert">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" class="flex-shrink-0 mt-1" viewBox="0 0 16 16">
+                        <path d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zM5.354 4.646a.5.5 0 1 0-.708.708L7.293 8l-2.647 2.646a.5.5 0 0 0 .708.708L8 8.707l2.646 2.647a.5.5 0 0 0 .708-.708L8.707 8l2.647-2.646a.5.5 0 0 0-.708-.708L8 7.293 5.354 4.646z" />
+                    </svg>
+                    <div>
+                        <strong>Ungültiger Zugangscode.</strong><br />
+                        <span style="font-size:0.85rem;">Der eingegebene Code ist falsch. Bitte versuchen Sie es erneut.</span>
+                    </div>
+                </div>
+            }
+            else if (LoginResult == EnvelopeLoginResult.Error)
+            {
+                <div class="alert alert-secondary d-flex align-items-start gap-2 py-2" role="alert">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" class="flex-shrink-0 mt-1" viewBox="0 0 16 16">
+                        <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z" />
+                        <path d="M7.002 11a1 1 0 1 1 2 0 1 1 0 0 1-2 0zM7.1 4.995a.905.905 0 1 1 1.8 0l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 4.995z" />
+                    </svg>
+                    <div>
+                        <strong>Serverfehler.</strong><br />
+                        <span style="font-size:0.85rem;">Ein unerwarteter Fehler ist aufgetreten. Bitte versuchen Sie es später erneut.</span>
+                    </div>
+                </div>
+            }
+
+            <div class="mb-4">
+                <label class="form-label fw-medium" for="login-access-code">
+                    Zugangscode
+                    <span class="text-danger ms-1">*</span>
+                </label>
+                <div class="input-group">
+                    <span class="input-group-text bg-light border-end-0">
+                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="#6c757d" viewBox="0 0 16 16">
+                            <path d="M3.5 11.5a3.5 3.5 0 1 1 3.163-5H14L15.5 8 14 9.5l-1-1-1 1-1-1-1 1-1-1-1.837 1.337A3.5 3.5 0 0 1 3.5 11.5zm0-1a2.5 2.5 0 1 0 0-5 2.5 2.5 0 0 0 0 5z" />
+                        </svg>
+                    </span>
+                    <input id="login-access-code"
+                           type="@(ShowCode ? "text" : "password")"
+                           class="form-control border-start-0 border-end-0 @(LoginResult == EnvelopeLoginResult.InvalidCode ? "is-invalid" : null)"
+                           placeholder="Zugangscode eingeben"
+                           @bind="AccessCode"
+                           @bind:event="oninput"
+                           @onkeydown="OnKeyDownAsync"
+                           disabled="@IsLoading"
+                           autocomplete="one-time-code" />
+                    <button type="button"
+                            class="btn btn-outline-secondary border-start-0"
+                            style="border-left: none;"
+                            tabindex="-1"
+                            @onclick="() => ShowCode = !ShowCode">
+                        @if (ShowCode)
+                        {
+                            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
+                                <path d="M13.359 11.238C15.06 9.72 16 8 16 8s-3-5.5-8-5.5a7.028 7.028 0 0 0-2.79.588l.77.771A5.944 5.944 0 0 1 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.134 13.134 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755-.165.165-.337.328-.517.486l.708.709z" />
+                                <path d="M11.297 9.176a3.5 3.5 0 0 0-4.474-4.474l.823.823a2.5 2.5 0 0 1 2.829 2.829l.822.822zm-2.943 1.299.822.822a3.5 3.5 0 0 1-4.474-4.474l.823.823a2.5 2.5 0 0 0 2.829 2.829z" />
+                                <path d="M3.35 5.47c-.18.16-.353.322-.518.487A13.134 13.134 0 0 0 1.172 8l.195.288c.335.48.83 1.12 1.465 1.755C4.121 11.332 5.881 12.5 8 12.5c.716 0 1.39-.133 2.02-.36l.77.772A7.029 7.029 0 0 1 8 13.5C3 13.5 0 8 0 8s.939-1.721 2.641-3.238l.708.709z" />
+                                <path fill-rule="evenodd" d="M13.646 14.354l-12-12 .708-.708 12 12-.708.708z" />
+                            </svg>
+                        }
+                        else
+                        {
+                            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
+                                <path d="M16 8s-3-5.5-8-5.5S0 8 0 8s3 5.5 8 5.5S16 8 16 8zM1.173 8a13.133 13.133 0 0 1 1.66-2.043C4.12 4.668 5.88 3.5 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.133 13.133 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755C11.879 11.332 10.119 12.5 8 12.5c-2.12 0-3.879-1.168-5.168-2.457A13.134 13.134 0 0 1 1.172 8z" />
+                                <path d="M8 5.5a2.5 2.5 0 1 0 0 5 2.5 2.5 0 0 0 0-5zM4.5 8a3.5 3.5 0 1 1 7 0 3.5 3.5 0 0 1-7 0z" />
+                            </svg>
+                        }
+                    </button>
+                </div>
+            </div>
+
+            <button class="btn btn-primary w-100 py-2 fw-medium"
+                    style="background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%); border: none;"
+                    @onclick="SubmitAsync"
+                    disabled="@(IsLoading || string.IsNullOrWhiteSpace(AccessCode))">
+                @if (IsLoading)
+                {
+                    <span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
+                    <span>Überprüfen …</span>
+                }
+                else
+                {
+                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="me-2" viewBox="0 0 16 16">
+                        <path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z" />
+                    </svg>
+                    <span>Dokument öffnen</span>
+                }
+            </button>
+
+        </div>
+
+        <div class="card-footer text-center text-muted py-3 border-0 bg-transparent" style="font-size: 0.78rem;">
+            Bei Problemen wenden Sie sich bitte an den Absender des Dokuments.
+        </div>
+
+    </div>
+</div>
+
+@code {
+    [Parameter] public string EnvelopeKey { get; set; } = string.Empty;
+
+    string AccessCode = string.Empty;
+    bool ShowCode;
+    bool IsLoading;
+    EnvelopeLoginResult? LoginResult;
+
+    async Task OnKeyDownAsync(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs e)
+    {
+        if (e.Key == "Enter")
+            await SubmitAsync();
+    }
+
+    async Task SubmitAsync()
+    {
+        if (string.IsNullOrWhiteSpace(AccessCode) || IsLoading) return;
+
+        IsLoading = true;
+        LoginResult = null;
+        await InvokeAsync(StateHasChanged);
+
+        var result = await AuthService.LoginEnvelopeReceiverAsync(EnvelopeKey, AccessCode.Trim());
+
+        if (result == EnvelopeLoginResult.Success)
+        {
+            Navigation.NavigateTo($"/envelope/{Uri.EscapeDataString(EnvelopeKey)}", forceLoad: true);
+            return;
+        }
+
+        LoginResult = result;
+        IsLoading = false;
+        await InvokeAsync(StateHasChanged);
+    }
+}
+

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Pages/LoginSenderPage.razor

@@ -0,0 +1,172 @@
+@page "/sender/login"
+@rendermode InteractiveWebAssembly
+@using EnvelopeGenerator.Server.Client.Services
+@inject AuthService AuthService
+@inject NavigationManager Navigation
+
+<link href="_content/DevExpress.Blazor.Themes/blazing-berry.bs5.min.css" rel="stylesheet" />
+
+<div class="login-page-wrapper d-flex align-items-center justify-content-center min-vh-100">
+    <div class="login-card card shadow border-0" style="max-width: 440px; width: 100%;">
+
+        <div class="card-header text-white text-center py-4 border-0" style="background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%); border-radius: calc(0.375rem - 1px) calc(0.375rem - 1px) 0 0;">
+            <div class="mb-2">
+                <svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" fill="currentColor" viewBox="0 0 16 16">
+                    <path d="M11 6a3 3 0 1 1-6 0 3 3 0 0 1 6 0z"/>
+                    <path fill-rule="evenodd" d="M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8zm8-7a7 7 0 0 0-5.468 11.37C3.242 11.226 4.805 10 8 10s4.757 1.225 5.468 2.37A7 7 0 0 0 8 1z"/>
+                </svg>
+            </div>
+            <h5 class="mb-0 fw-semibold">Sender Anmeldung</h5>
+            <p class="mb-0 mt-1 opacity-75" style="font-size: 0.85rem;">Sicherer Zugang zum Sender-Dashboard</p>
+        </div>
+
+        <div class="card-body p-4">
+
+            <p class="text-muted mb-4" style="font-size: 0.875rem; line-height: 1.5;">
+                Bitte melden Sie sich mit Ihren Zugangsdaten an, um auf das Sender-Dashboard zuzugreifen.
+            </p>
+
+            @if (LoginResult == SenderLoginResult.InvalidCredentials) {
+                <div class="alert alert-danger d-flex align-items-start gap-2 py-2" role="alert">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" class="flex-shrink-0 mt-1" viewBox="0 0 16 16">
+                        <path d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zM5.354 4.646a.5.5 0 1 0-.708.708L7.293 8l-2.647 2.646a.5.5 0 0 0 .708.708L8 8.707l2.646 2.647a.5.5 0 0 0 .708-.708L8.707 8l2.647-2.646a.5.5 0 0 0-.708-.708L8 7.293 5.354 4.646z"/>
+                    </svg>
+                    <div>
+                        <strong>Ungültige Anmeldedaten.</strong><br />
+                        <span style="font-size:0.85rem;">Benutzername oder Passwort ist falsch. Bitte versuchen Sie es erneut.</span>
+                    </div>
+                </div>
+            } else if (LoginResult == SenderLoginResult.Error) {
+                <div class="alert alert-secondary d-flex align-items-start gap-2 py-2" role="alert">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" class="flex-shrink-0 mt-1" viewBox="0 0 16 16">
+                        <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
+                        <path d="M7.002 11a1 1 0 1 1 2 0 1 1 0 0 1-2 0zM7.1 4.995a.905.905 0 1 1 1.8 0l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 4.995z"/>
+                    </svg>
+                    <div>
+                        <strong>Serverfehler.</strong><br />
+                        <span style="font-size:0.85rem;">Ein unerwarteter Fehler ist aufgetreten. Bitte versuchen Sie es später erneut.</span>
+                    </div>
+                </div>
+            }
+
+            <div class="mb-3">
+                <label class="form-label fw-medium" for="login-username">
+                    Benutzername
+                    <span class="text-danger ms-1">*</span>
+                </label>
+                <div class="input-group">
+                    <span class="input-group-text bg-light">
+                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="#6c757d" viewBox="0 0 16 16">
+                            <path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1H3Zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6Z"/>
+                        </svg>
+                    </span>
+                    <input id="login-username"
+                           type="text"
+                           class="form-control @(LoginResult == SenderLoginResult.InvalidCredentials ? "is-invalid" : null)"
+                           placeholder="Benutzername eingeben"
+                           @bind="Username"
+                           @bind:event="oninput"
+                           @onkeydown="OnKeyDownAsync"
+                           disabled="@IsLoading"
+                           autocomplete="username" />
+                </div>
+            </div>
+
+            <div class="mb-4">
+                <label class="form-label fw-medium" for="login-password">
+                    Passwort
+                    <span class="text-danger ms-1">*</span>
+                </label>
+                <div class="input-group">
+                    <span class="input-group-text bg-light border-end-0">
+                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="#6c757d" viewBox="0 0 16 16">
+                            <path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z"/>
+                        </svg>
+                    </span>
+                    <input id="login-password"
+                           type="@(ShowPassword ? "text" : "password")"
+                           class="form-control border-start-0 border-end-0 @(LoginResult == SenderLoginResult.InvalidCredentials ? "is-invalid" : null)"
+                           placeholder="Passwort eingeben"
+                           @bind="Password"
+                           @bind:event="oninput"
+                           @onkeydown="OnKeyDownAsync"
+                           disabled="@IsLoading"
+                           autocomplete="current-password" />
+                    <button type="button"
+                            class="btn btn-outline-secondary border-start-0"
+                            style="border-left: none;"
+                            tabindex="-1"
+                            @onclick="() => ShowPassword = !ShowPassword">
+                        @if (ShowPassword) {
+                            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
+                                <path d="M13.359 11.238C15.06 9.72 16 8 16 8s-3-5.5-8-5.5a7.028 7.028 0 0 0-2.79.588l.77.771A5.944 5.944 0 0 1 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.134 13.134 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755-.165.165-.337.328-.517.486l.708.709z"/>
+                                <path d="M11.297 9.176a3.5 3.5 0 0 0-4.474-4.474l.823.823a2.5 2.5 0 0 1 2.829 2.829l.822.822zm-2.943 1.299.822.822a3.5 3.5 0 0 1-4.474-4.474l.823.823a2.5 2.5 0 0 0 2.829 2.829z"/>
+                                <path d="M3.35 5.47c-.18.16-.353.322-.518.487A13.134 13.134 0 0 0 1.172 8l.195.288c.335.48.83 1.12 1.465 1.755C4.121 11.332 5.881 12.5 8 12.5c.716 0 1.39-.133 2.02-.36l.77.772A7.029 7.029 0 0 1 8 13.5C3 13.5 0 8 0 8s.939-1.721 2.641-3.238l.708.709z"/>
+                                <path fill-rule="evenodd" d="M13.646 14.354l-12-12 .708-.708 12 12-.708.708z"/>
+                            </svg>
+                        } else {
+                            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16">
+                                <path d="M16 8s-3-5.5-8-5.5S0 8 0 8s3 5.5 8 5.5S16 8 16 8zM1.173 8a13.133 13.133 0 0 1 1.66-2.043C4.12 4.668 5.88 3.5 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.133 13.133 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755C11.879 11.332 10.119 12.5 8 12.5c-2.12 0-3.879-1.168-5.168-2.457A13.134 13.134 0 0 1 1.172 8z"/>
+                                <path d="M8 5.5a2.5 2.5 0 1 0 0 5 2.5 2.5 0 0 0 0-5zM4.5 8a3.5 3.5 0 1 1 7 0 3.5 3.5 0 0 1-7 0z"/>
+                            </svg>
+                        }
+                    </button>
+                </div>
+            </div>
+
+            <button class="btn btn-primary w-100 py-2 fw-medium"
+                    style="background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%); border: none;"
+                    @onclick="SubmitAsync"
+                    disabled="@(IsLoading || string.IsNullOrWhiteSpace(Username) || string.IsNullOrWhiteSpace(Password))">
+                @if (IsLoading) {
+                    <span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
+                    <span>Anmelden …</span>
+                } else {
+                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="me-2" viewBox="0 0 16 16">
+                        <path fill-rule="evenodd" d="M10 3.5a.5.5 0 0 0-.5-.5h-8a.5.5 0 0 0-.5.5v9a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5v-2a.5.5 0 0 1 1 0v2A1.5 1.5 0 0 1 9.5 14h-8A1.5 1.5 0 0 1 0 12.5v-9A1.5 1.5 0 0 1 1.5 2h8A1.5 1.5 0 0 1 11 3.5v2a.5.5 0 0 1-1 0v-2z"/>
+                        <path fill-rule="evenodd" d="M4.146 8.354a.5.5 0 0 1 0-.708l3-3a.5.5 0 1 1 .708.708L5.707 7.5H14.5a.5.5 0 0 1 0 1H5.707l2.147 2.146a.5.5 0 0 1-.708.708l-3-3z"/>
+                    </svg>
+                    <span>Anmelden</span>
+                }
+            </button>
+
+        </div>
+
+        <div class="card-footer text-center text-muted py-3 border-0 bg-transparent" style="font-size: 0.78rem;">
+            Bei Problemen wenden Sie sich bitte an den Administrator.
+        </div>
+
+    </div>
+</div>
+
+@code {
+    string Username = string.Empty;
+    string Password = string.Empty;
+    bool ShowPassword;
+    bool IsLoading;
+    SenderLoginResult? LoginResult;
+
+    async Task OnKeyDownAsync(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs e) {
+        if (e.Key == "Enter")
+            await SubmitAsync();
+    }
+
+    async Task SubmitAsync() {
+        if (string.IsNullOrWhiteSpace(Username) || string.IsNullOrWhiteSpace(Password) || IsLoading) return;
+
+        IsLoading = true;
+        LoginResult = null;
+        await InvokeAsync(StateHasChanged);
+
+        var result = await AuthService.LoginSenderAsync(Username.Trim(), Password.Trim());
+
+        if (result == SenderLoginResult.Success) {
+            Navigation.NavigateTo("/sender", forceLoad: true);
+            return;
+        }
+
+        LoginResult = result;
+        IsLoading = false;
+        await InvokeAsync(StateHasChanged);
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/PredefinedReports/Report.resx

@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="objectDataSource1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/PredefinedReports/ReportsFactory.cs

@@ -0,0 +1,14 @@
+using DevExpress.XtraReports.UI;
+
+namespace EnvelopeGenerator.Server.Client.PredefinedReports {
+    public static class ReportsFactory
+    {
+        public static readonly Dictionary<string, Func<XtraReport>> Reports = new() {
+            ["LargeDatasetReport"] = () => new PredefinedReports.Report()
+        };
+
+        public static XtraReport GetReport(string reportName) {
+            return Reports[reportName]();
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Program.cs

@@ -0,0 +1,60 @@
+using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+using EnvelopeGenerator.Server.Client.Services;
+using EnvelopeGenerator.Server.Client.Options;
+using DevExpress.Blazor.Reporting;
+using DevExpress.XtraReports.Web.Extensions;
+using DevExpress.DataAccess.Web;
+using DevExpress.XtraReports.Services;
+
+var builder = WebAssemblyHostBuilder.CreateDefault(args);
+
+// Named HttpClient for API calls (both for services and DevExpress components)
+builder.Services.AddHttpClient("EnvelopeGenerator.Server", client =>
+{
+    client.BaseAddress = new Uri(builder.HostEnvironment.BaseAddress);
+});
+
+// Default HttpClient (DevExpress PdfViewer requires this)
+builder.Services.AddScoped(sp => new HttpClient 
+{ 
+    BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) 
+});
+
+// Configuration Options
+builder.Services.Configure<PdfViewerOptions>(opts =>
+    builder.Configuration.GetSection(PdfViewerOptions.SectionName).Bind(opts));
+
+// Business Services
+builder.Services.AddScoped<DocumentService>();
+builder.Services.AddScoped<AuthService>();
+builder.Services.AddScoped<AnnotationService>();
+builder.Services.AddScoped<EnvelopeReceiverService>();
+builder.Services.AddScoped<SignatureService>();
+builder.Services.AddScoped<SignatureCacheService>();
+builder.Services.AddSingleton<AppVersionService>();
+
+// DevExpress WASM
+builder.Services.AddDevExpressWebAssemblyBlazorPdfViewer();
+builder.Services.AddDevExpressWebAssemblyBlazorReportViewer();
+
+builder.Services.AddDevExpressBlazorReportingWebAssembly(configure => {
+    configure.UseDevelopmentMode();
+});
+
+// Reporting Services
+builder.Services.AddScoped<IDataSourceWizardJsonConnectionStorage, CustomDataSourceWizardJsonDataConnectionStorage>();
+builder.Services.AddScoped<IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory>();
+builder.Services.AddScoped<IObjectDataSourceWizardTypeProvider, ObjectDataSourceWizardCustomTypeProvider>();
+
+DevExpress.Utils.DeserializationSettings.RegisterTrustedClass(typeof(EnvelopeGenerator.Server.Client.Data.DataItemList));
+DevExpress.Utils.DeserializationSettings.RegisterTrustedClass(typeof(EnvelopeGenerator.Server.Client.PredefinedReports.Report));
+
+builder.Services.AddSingleton<InMemoryReportStorageWebExtension>();
+builder.Services.AddSingleton<ReportStorageWebExtension>(sp => sp.GetRequiredService<InMemoryReportStorageWebExtension>());
+builder.Services.AddScoped<IReportProviderAsync, CustomReportProvider>();
+
+ReportStorageWebExtension.RegisterExtensionGlobal(new InMemoryReportStorageWebExtension());
+
+var host = builder.Build();
+await FontLoader.LoadFonts(host.Services.GetRequiredService<IHttpClientFactory>(), new List<string> { "opensans.ttf" });
+await host.RunAsync();

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Routes.razor

@@ -0,0 +1,6 @@
+<Router AppAssembly="typeof(Program).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="routeData" DefaultLayout="typeof(Layout.MainLayout)" />
+        <FocusOnNavigate RouteData="routeData" Selector="h1" />
+    </Found>
+</Router>

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/AnnotationService.cs

@@ -0,0 +1,29 @@
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json;
+using EnvelopeGenerator.Server.Client.Models;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+/// <summary>
+/// Retrieves annotation positions from the API.
+/// Uses relative paths (/api/Annotation/{envelopeKey}).
+/// </summary>
+[Obsolete("Use SignatureService.")]
+public class AnnotationService(IHttpClientFactory httpClientFactory)
+{
+    private static readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
+
+    public async Task<IReadOnlyList<AnnotationDto>> GetAnnotationsAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var url = $"/api/Annotation/{Uri.EscapeDataString(envelopeKey)}";
+        var response = await http.GetAsync(url, cancel);
+
+        if (!response.IsSuccessStatusCode)
+            return [];
+
+        var result = await response.Content.ReadFromJsonAsync<List<AnnotationDto>>(_jsonOptions, cancel);
+        return result ?? [];
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/AppVersionService.cs

@@ -0,0 +1,26 @@
+namespace EnvelopeGenerator.Server.Client.Services;
+
+/// <summary>
+/// Provides application version for cache busting static assets.
+/// Version is automatically incremented on each build via AssemblyVersion.
+/// </summary>
+public class AppVersionService
+{
+    /// <summary>
+    /// Current application version (e.g., "1.0.0.0")
+    /// </summary>
+    public string Version { get; }
+
+    public AppVersionService()
+    {
+        // Get version from assembly metadata
+        Version = typeof(AppVersionService).Assembly.GetName().Version?.ToString() ?? "1.0.0.0";
+    }
+
+    /// <summary>
+    /// Generates versioned URL for static assets (cache busting)
+    /// </summary>
+    /// <param name="path">Asset path (e.g., "css/envelope-viewer.css")</param>
+    /// <returns>Versioned URL (e.g., "css/envelope-viewer.css?v=1.0.0.0")</returns>
+    public string GetVersionedUrl(string path) => $"{path}?v={Version}";
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/AuthService.cs

@@ -0,0 +1,83 @@
+using System.Net;
+using System.Net.Http;
+using System.Net.Http.Json;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public enum EnvelopeLoginResult { Success, InvalidCode, NotFound, Error }
+
+public enum SenderLoginResult { Success, InvalidCredentials, Error }
+
+public class AuthService(IHttpClientFactory httpClientFactory)
+{
+
+    /// <summary>
+    /// Checks whether the current user holds a valid receiver token for the given envelope key.
+    /// Calls GET /api/auth/check/envelope/{envelopeKey}.
+    /// </summary>
+    public async Task<bool> CheckEnvelopeAccessAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.GetAsync($"/api/auth/check/envelope/{Uri.EscapeDataString(envelopeKey)}", cancel);
+        return response.StatusCode == HttpStatusCode.OK;
+    }
+
+    /// <summary>
+    /// Submits the access code for the given envelope key.
+    /// Calls POST /api/Auth/envelope-receiver/{key} with multipart/form-data.
+    /// On success the API sets an authentication cookie automatically.
+    /// </summary>
+    public async Task<EnvelopeLoginResult> LoginEnvelopeReceiverAsync(string envelopeKey, string accessCode, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var form = new MultipartFormDataContent();
+        form.Add(new StringContent(accessCode), "AccessCode");
+
+        var response = await http.PostAsync(
+            $"/api/Auth/envelope-receiver/{Uri.EscapeDataString(envelopeKey)}",
+            form, cancel);
+
+        return response.StatusCode switch
+        {
+            HttpStatusCode.OK => EnvelopeLoginResult.Success,
+            HttpStatusCode.Unauthorized => EnvelopeLoginResult.InvalidCode,
+            HttpStatusCode.NotFound => EnvelopeLoginResult.NotFound,
+            _ => EnvelopeLoginResult.Error
+        };
+    }
+
+    /// <summary>
+    /// Removes the per-envelope receiver cookie for the given envelope key.
+    /// Calls POST /api/auth/logout/envelope/{envelopeKey}.
+    /// </summary>
+    public async Task<bool> LogoutEnvelopeReceiverAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.PostAsync(
+            $"/api/auth/logout/envelope/{Uri.EscapeDataString(envelopeKey)}",
+            null, cancel);
+        return response.IsSuccessStatusCode;
+    }
+
+    /// <summary>
+    /// Authenticates a sender user with username and password.
+    /// Calls POST /api/auth?cookie=true with JSON body.
+    /// On success the API sets an authentication cookie automatically.
+    /// </summary>
+    public async Task<SenderLoginResult> LoginSenderAsync(string username, string password, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var requestBody = new { username, password };
+
+        var response = await http.PostAsJsonAsync(
+            $"/api/auth?cookie=true",
+            requestBody, cancel);
+
+        return response.StatusCode switch
+        {
+            HttpStatusCode.OK => SenderLoginResult.Success,
+            HttpStatusCode.Unauthorized => SenderLoginResult.InvalidCredentials,
+            _ => SenderLoginResult.Error
+        };
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/CustomDataSourceWizardJsonDataConnectionStorage.cs

@@ -0,0 +1,39 @@
+using DevExpress.DataAccess.Json;
+using DevExpress.DataAccess.Web;
+using DevExpress.DataAccess.Wizard.Services;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class CustomDataSourceWizardJsonDataConnectionStorage : IDataSourceWizardJsonConnectionStorage
+{
+    public static JsonDataConnection GetDefaultConnection() {
+        var uriJsonSource = new UriJsonSource() {
+            Uri = new Uri(@"https://raw.githubusercontent.com/DevExpress-Examples/DataSources/master/JSON/customers.json"),
+        };
+        return new JsonDataConnection(uriJsonSource) { StoreConnectionNameOnly = true, Name = "NWindProductsJson" };
+    }
+    public static List<JsonDataConnection> GetConnections() {
+        var connections = new List<JsonDataConnection> {
+            GetDefaultConnection()
+        };
+        return connections;
+    }
+
+    bool IJsonConnectionStorageService.CanSaveConnection => false;
+    bool IJsonConnectionStorageService.ContainsConnection(string connectionName) {
+        return GetConnections().Any(x => x.Name == connectionName);
+    }
+
+    IEnumerable<JsonDataConnection> IJsonConnectionStorageService.GetConnections() {
+        return GetConnections();
+    }
+
+    JsonDataConnection IJsonDataConnectionProviderService.GetJsonDataConnection(string name) {
+        var connection = GetConnections().FirstOrDefault(x => x.Name == name);
+        if(connection == null)
+            throw new InvalidOperationException();
+        return connection;
+    }
+
+    void IJsonConnectionStorageService.SaveConnection(string connectionName, JsonDataConnection connection, bool saveCredentials) { }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/CustomJsonDataConnectionProviderFactory.cs

@@ -0,0 +1,23 @@
+using DevExpress.DataAccess.Json;
+using DevExpress.DataAccess.Web;
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class CustomJsonDataConnectionProviderFactory : IJsonDataConnectionProviderFactory {
+    public IJsonDataConnectionProviderService Create() {
+        return new WebDocumentViewerJsonDataConnectionProvider(CustomDataSourceWizardJsonDataConnectionStorage.GetConnections());
+    }
+}
+
+public class WebDocumentViewerJsonDataConnectionProvider : IJsonDataConnectionProviderService
+{
+    readonly List<JsonDataConnection> jsonDataConnections;
+    public WebDocumentViewerJsonDataConnectionProvider(List<JsonDataConnection> jsonDataConnections) {
+        this.jsonDataConnections = jsonDataConnections;
+    }
+    public JsonDataConnection GetJsonDataConnection(string name) {
+        var connection = jsonDataConnections.FirstOrDefault(x => x.Name == name);
+        if(connection == null)
+            throw new InvalidOperationException();
+        return connection;
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/CustomReportProvider.cs

@@ -0,0 +1,20 @@
+using DevExpress.XtraReports.UI;
+using DevExpress.XtraReports.Services;
+using EnvelopeGenerator.Server.Client.PredefinedReports;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class CustomReportProvider : IReportProviderAsync {
+    private readonly InMemoryReportStorageWebExtension reportStorage;
+
+    public CustomReportProvider(InMemoryReportStorageWebExtension reportStorage) {
+        this.reportStorage = reportStorage;
+    }
+
+    public Task<XtraReport> GetReportAsync(string id, ReportProviderContext context) {
+        if(reportStorage.TryGetReport(id, out var savedReport))
+            return Task.FromResult(savedReport);
+
+        return Task.FromResult(ReportsFactory.GetReport(id));
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/DocumentService.cs

@@ -0,0 +1,32 @@
+using System.Net;
+using System.Net.Http;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class DocumentService(IHttpClientFactory httpClientFactory)
+{
+
+    /// <summary>
+    /// Fetches the PDF bytes for the given envelope key from the API.
+    /// Throws HttpRequestException on failure with appropriate status code.
+    /// </summary>
+    /// <exception cref="HttpRequestException">Thrown when the API request fails.</exception>
+    public async Task<byte[]?> GetDocumentAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.GetAsync($"/api/Document/{Uri.EscapeDataString(envelopeKey)}", cancel);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var statusCode = (int)response.StatusCode;
+            var reasonPhrase = response.ReasonPhrase ?? "Unknown error";
+            throw new HttpRequestException(
+                $"Failed to load document. Status: {statusCode} ({reasonPhrase})",
+                null,
+                response.StatusCode);
+        }
+
+        var bytes = await response.Content.ReadAsByteArrayAsync(cancel);
+        return bytes;
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/EnvelopeReceiverService.cs

@@ -0,0 +1,40 @@
+using System.Net;
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json;
+using EnvelopeGenerator.Server.Client.Models;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+/// <summary>
+/// Retrieves the <see cref="EnvelopeReceiverDto"/> for the authenticated receiver
+/// from <c>GET /api/EnvelopeReceiver/{envelopeKey}</c>.
+/// </summary>
+public class EnvelopeReceiverService(IHttpClientFactory httpClientFactory)
+{
+    private static readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
+
+    /// <summary>
+    /// Fetches the envelope receiver data for the given envelope key from the API.
+    /// Throws HttpRequestException on failure with appropriate status code.
+    /// </summary>
+    /// <exception cref="HttpRequestException">Thrown when the API request fails.</exception>
+    public async Task<EnvelopeReceiverDto?> GetAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var url = $"/api/EnvelopeReceiver/{Uri.EscapeDataString(envelopeKey)}";
+        var response = await http.GetAsync(url, cancel);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var statusCode = (int)response.StatusCode;
+            var reasonPhrase = response.ReasonPhrase ?? "Unknown error";
+            throw new HttpRequestException(
+                $"Failed to load envelope receiver data. Status: {statusCode} ({reasonPhrase})",
+                null,
+                response.StatusCode);
+        }
+
+        return await response.Content.ReadFromJsonAsync<EnvelopeReceiverDto>(_jsonOptions, cancel);
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/FontLoader.cs

@@ -0,0 +1,17 @@
+using DevExpress.Drawing;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public static class FontLoader 
+{
+    public static async Task LoadFonts(IHttpClientFactory httpClientFactory, List<string> fontNames) 
+    {
+        using var httpClient = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        
+        foreach (var fontName in fontNames) 
+        {
+            var fontBytes = await httpClient.GetByteArrayAsync($"/fonts/{fontName}");
+            DXFontRepository.Instance.AddFont(fontBytes);
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/InMemoryReportStorageWebExtension.cs

@@ -0,0 +1,83 @@
+using DevExpress.XtraReports.UI;
+using DevExpress.XtraReports.Web.Extensions;
+using EnvelopeGenerator.Server.Client.PredefinedReports;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class InMemoryReportStorageWebExtension : ReportStorageWebExtension
+{
+    private const string DefaultReportName = "LargeDatasetReport";
+    private static readonly Dictionary<string, byte[]> Reports = new(StringComparer.OrdinalIgnoreCase);
+
+    public override bool CanSetData(string url) => IsValidUrl(url);
+
+    public override byte[] GetData(string url)
+    {
+        url = NormalizeUrl(url);
+
+        if (Reports.TryGetValue(url, out var reportLayout))
+            return reportLayout;
+
+        if (ReportsFactory.Reports.TryGetValue(url, out var reportFactory))
+            return SaveReport(reportFactory());
+
+        throw new DevExpress.XtraReports.Web.ClientControls.FaultException($"Report '{url}' was not found.");
+    }
+
+    public override Dictionary<string, string> GetUrls()
+    {
+        var urls = ReportsFactory.Reports.Keys
+            .Concat(Reports.Keys)
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToDictionary(name => name, name => name, StringComparer.OrdinalIgnoreCase);
+
+        return urls;
+    }
+
+    public override bool IsValidUrl(string url)
+    {
+        return !string.IsNullOrWhiteSpace(url)
+            && url.IndexOfAny(Path.GetInvalidFileNameChars()) < 0;
+    }
+
+    public override void SetData(XtraReport report, string url)
+    {
+        url = NormalizeUrl(url);
+        Reports[url] = SaveReport(report);
+    }
+
+    public override string SetNewData(XtraReport report, string defaultUrl)
+    {
+        var url = NormalizeUrl(defaultUrl);
+        Reports[url] = SaveReport(report);
+        return url;
+    }
+
+    public bool TryGetReport(string url, out XtraReport report)
+    {
+        url = NormalizeUrl(url);
+
+        if (!Reports.ContainsKey(url))
+        {
+            report = null!;
+            return false;
+        }
+
+        using var stream = new MemoryStream(Reports[url]);
+        report = XtraReport.FromXmlStream(stream, true);
+        report.Name = url;
+        return true;
+    }
+
+    private static string NormalizeUrl(string url)
+    {
+        return string.IsNullOrWhiteSpace(url) ? DefaultReportName : url;
+    }
+
+    private static byte[] SaveReport(XtraReport report)
+    {
+        using var stream = new MemoryStream();
+        report.SaveLayoutToXml(stream);
+        return stream.ToArray();
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/ObjectDataSourceWizardCustomTypeProvider.cs

@@ -0,0 +1,9 @@
+using DevExpress.DataAccess.Web;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class ObjectDataSourceWizardCustomTypeProvider : IObjectDataSourceWizardTypeProvider {
+    public IEnumerable<Type> GetAvailableTypes(string context) {
+        return new[] { typeof(Data.DataItemList) };
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/SignatureCacheService.cs

@@ -0,0 +1,67 @@
+using System.Net.Http;
+using System.Net.Http.Json;
+using EnvelopeGenerator.Server.Client.Models;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+/// <summary>
+/// Client service for managing cached signatures via API.
+/// </summary>
+public class SignatureCacheService(IHttpClientFactory httpClientFactory)
+{
+
+    public async Task SaveSignatureAsync(
+        string envelopeKey,
+        SignatureCaptureDto signature,
+        CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.PostAsJsonAsync(
+            $"/api/Cache/SignatureCapture/{Uri.EscapeDataString(envelopeKey)}",
+            signature,
+            cancel);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var error = await response.Content.ReadAsStringAsync(cancel);
+            throw new HttpRequestException($"Failed to cache signature: {response.StatusCode} - {error}");
+        }
+    }
+
+    public async Task<SignatureCaptureDto?> GetSignatureAsync(
+        string envelopeKey,
+        CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.GetAsync(
+            $"/api/Cache/SignatureCapture/{Uri.EscapeDataString(envelopeKey)}",
+            cancel);
+
+        if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+            return null;
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var error = await response.Content.ReadAsStringAsync(cancel);
+            throw new HttpRequestException($"Failed to retrieve signature: {response.StatusCode} - {error}");
+        }
+
+        return await response.Content.ReadFromJsonAsync<SignatureCaptureDto>(cancellationToken: cancel);
+    }
+
+    public async Task DeleteSignatureAsync(
+        string envelopeKey,
+        CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var response = await http.DeleteAsync(
+            $"/api/Cache/SignatureCapture/{Uri.EscapeDataString(envelopeKey)}",
+            cancel);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var error = await response.Content.ReadAsStringAsync(cancel);
+            throw new HttpRequestException($"Failed to delete signature: {response.StatusCode} - {error}");
+        }
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/SignatureService.cs

@@ -0,0 +1,24 @@
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json;
+using EnvelopeGenerator.Server.Client.Models;
+
+namespace EnvelopeGenerator.Server.Client.Services;
+
+public class SignatureService(IHttpClientFactory httpClientFactory)
+{
+    private static readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
+
+    public async Task<IReadOnlyList<SignatureDto>> GetAsync(string envelopeKey, CancellationToken cancel = default)
+    {
+        using var http = httpClientFactory.CreateClient("EnvelopeGenerator.Server");
+        var url = $"/api/Signature/{Uri.EscapeDataString(envelopeKey)}";
+        var response = await http.GetAsync(url, cancel);
+
+        if (!response.IsSuccessStatusCode)
+            throw new HttpRequestException($"Failed to retrieve signatures for envelope {envelopeKey}: {response.StatusCode} {response.ReasonPhrase}");
+
+        var result = await response.Content.ReadFromJsonAsync<List<SignatureDto>>(_jsonOptions, cancel);
+        return result ?? [];
+    }
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/_Imports.razor

@@ -0,0 +1,16 @@
+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.AspNetCore.Components.WebAssembly.Http
+@using Microsoft.JSInterop
+@using EnvelopeGenerator.Server.Client
+@using EnvelopeGenerator.Server.Client.Services
+@using EnvelopeGenerator.Server.Client.Models
+@using EnvelopeGenerator.Server.Client.Options
+@using DevExpress.Blazor
+@using DevExpress.Blazor.PdfViewer
+@using DevExpress.Blazor.Reporting

EnvelopeGenerator.Server/EnvelopeGenerator.Server/AuthScheme.cs

@@ -0,0 +1,17 @@
+namespace EnvelopeGenerator.Server;
+
+/// <summary>
+/// Authentication scheme names for envelope generator.
+/// </summary>
+public static class AuthScheme
+{
+    /// <summary>
+    /// Scheme name used for per-envelope receiver JWT authentication.
+    /// </summary>
+    public const string Receiver = "EnvelopeGenerator.Server.ReceiverJWT";
+
+    /// <summary>
+    /// Scheme name used for per-envelope sender JWT authentication.
+    /// </summary>
+    public const string Sender = "EnvelopeGenerator.Server.SenderJWT";
+}

EnvelopeGenerator.Server/EnvelopeGenerator.Server/Components/App.razor

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <base href="/" />
+    <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" />
+    <link rel="stylesheet" href="css/app.css" />
+    <link rel="stylesheet" href="css/envelope-viewer.css" />
+    <link rel="stylesheet" href="EnvelopeGenerator.Server.styles.css" />
+    <HeadOutlet />
+</head>
+
+<body>
+    <Routes />
+    <script src="_content/DevExpress.Blazor.Resources/js/preload-script.js"></script>
+    <script src="js/typed.umd.js"></script>
+    <script src="js/receiver-signature.js?v=9"></script>
+    <script src="_framework/blazor.web.js"></script>
+</body>
+
+</html>