feat: enhance README with branding, screenshots, and workflow process

README.md

@@ -1,4 +1,8 @@
-# DocuNova
+<div align="center">
+  <img src="frontend/static/logo.svg" alt="DocuNova Logo" width="100" height="100" />
+  <h1>DocuNova</h1>
+  <p>Intelligent Document Processing & Management</p>
+</div>
 
 ## Overview
 
@@ -15,6 +19,48 @@ It is designed for flexibility and configurability through environment variables
 
 The project includes a **UI** for uploading and managing files, and an API documentation page is available at `/docs` (powered by **FastAPI**).
 
+## Screenshots
+
+<div align="center">
+  <img src="docs/upload-view.png" alt="DocuNova Upload Interface" width="80%" />
+  <p><em>Upload interface for adding new documents</em></p>
+  
+  <img src="docs/files-view.png" alt="DocuNova Files View" width="80%" />
+  <p><em>Files view with processed documents and metadata</em></p>
+</div>
+
+## Workflow Process
+
+DocuNova follows a streamlined document processing workflow:
+
+<div align="center">
+  <img src="docs/workflow-diagram.png" alt="DocuNova Workflow" width="90%" />
+</div>
+
+### Document Ingestion
+Documents enter DocuNova through three possible channels:
+1. **Web Upload**: Users manually upload files via the web interface
+2. **Email Attachments**: Automatic polling of configured IMAP mailboxes (supports multiple accounts)
+3. **API**: Direct programmatic uploads via the REST API
+
+### Processing Pipeline
+Every document goes through the following steps:
+1. **PDF Conversion**: Non-PDF files are converted to PDF format using Gotenberg
+2. **OCR Processing**: Azure Document Intelligence extracts text from images/scans
+3. **Metadata Extraction**: OpenAI analyzes document content to identify:
+   - Document type (invoice, receipt, contract, etc.)
+   - Key entities (dates, names, amounts, account numbers)
+   - Important data points specific to the document type
+4. **Enrichment**: Metadata is attached to the document in a structured format
+
+### Distribution
+Processed documents with their metadata can be automatically sent to:
+- **Dropbox**: For cloud storage and sharing
+- **Nextcloud**: For self-hosted file storage
+- **Paperless-NGX**: For advanced document management with search capabilities
+
+Users can choose to send documents to any combination of these destinations through configuration settings or manual selection.
+
 ## Features
 
 - **Document Upload & Storage**: