Fix encoding bug and add role helpers for user management

- Add decodeHtmlEntities function to formatters.ts for handling HTML entity decoding
- Add CompanyRole type and role helper functions (getRoleLabel, getRoleColor)
- Add useActiveCompanyRole hook for getting current user's company role
- Add Ledger.Core and QuestPDF project references to backend
- Add additional fields to CompanyReadModelDto

Closes books-hzt

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/Books.Api/Books.Api.csproj

@@ -15,6 +15,9 @@
     <ProjectReference Include="../../../EventFlow/Source/EventFlow.PostgreSql/EventFlow.PostgreSql.csproj" />
     <ProjectReference Include="../../../EventFlow/Source/EventFlow.Hangfire/EventFlow.Hangfire.csproj" />
 
+    <!-- Ledger (local source) -->
+    <ProjectReference Include="../../../ledger/src/Ledger.Core/Ledger.Core.csproj" />
+
     <!-- Database -->
     <PackageReference Include="Npgsql" Version="10.0.1" />
     <PackageReference Include="Dapper" Version="2.1.66" />
@@ -38,6 +41,9 @@
     <!-- DI Decoration -->
     <PackageReference Include="Scrutor" Version="5.0.2" />
 
+    <!-- PDF Generation -->
+    <PackageReference Include="QuestPDF" Version="2024.12.3" />
+
     <!-- Authentication -->
     <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="10.0.0" />
   </ItemGroup>

backend/Books.Api/EventFlow/ReadModels/CompanyReadModelDto.cs

@@ -19,6 +19,14 @@ public class CompanyReadModelDto
     public string Currency { get; set; } = string.Empty;
     public bool VatRegistered { get; set; }
     public string? VatPeriodFrequency { get; set; }
+
+    // Bank details for invoicing
+    public string? BankName { get; set; }
+    public string? BankRegNo { get; set; }
+    public string? BankAccountNo { get; set; }
+    public string? BankIban { get; set; }
+    public string? BankBic { get; set; }
+
     public DateTime CreatedAt { get; set; }
     public DateTime UpdatedAt { get; set; }
 }