fix(backend): simplify Finbuckle namespace imports and register DB interceptors

- Use consolidated Finbuckle.MultiTenant namespace instead of separate imports
- Switch TenantProvider to use untyped IMultiTenantContextAccessor (Finbuckle 9.x pattern)
- Register TenantDbConnectionInterceptor and SaveChangesTenantInterceptor as singletons
- Add interceptors to DbContext configuration for RLS tenant context support
- Update evidence files for Task 7 and Task 8 verification

backend/WorkClub.Api/Program.cs

@@ -1,6 +1,4 @@
-using Finbuckle.MultiTenant.Abstractions;
-using Finbuckle.MultiTenant.Extensions;
-using Finbuckle.MultiTenant.AspNetCore.Extensions;
+using Finbuckle.MultiTenant;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.EntityFrameworkCore;
@@ -8,6 +6,7 @@ using WorkClub.Api.Auth;
 using WorkClub.Api.Middleware;
 using WorkClub.Application.Interfaces;
 using WorkClub.Infrastructure.Data;
+using WorkClub.Infrastructure.Data.Interceptors;
 using WorkClub.Infrastructure.Services;
 using WorkClub.Infrastructure.Seed;
 
@@ -27,6 +26,9 @@ builder.Services.AddHttpContextAccessor();
 builder.Services.AddScoped<ITenantProvider, TenantProvider>();
 builder.Services.AddScoped<SeedDataService>();
 
+builder.Services.AddSingleton<TenantDbConnectionInterceptor>();
+builder.Services.AddSingleton<SaveChangesTenantInterceptor>();
+
 builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
     .AddJwtBearer(options =>
     {
@@ -50,8 +52,11 @@ builder.Services.AddAuthorizationBuilder()
     .AddPolicy("RequireMember", policy => policy.RequireRole("Admin", "Manager", "Member"))
     .AddPolicy("RequireViewer", policy => policy.RequireAuthenticatedUser());
 
-builder.Services.AddDbContext<AppDbContext>(options =>
-    options.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection")));
+builder.Services.AddDbContext<AppDbContext>((sp, options) =>
+    options.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection"))
+           .AddInterceptors(
+               sp.GetRequiredService<TenantDbConnectionInterceptor>(),
+               sp.GetRequiredService<SaveChangesTenantInterceptor>()));
 
 var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
 if (!string.IsNullOrEmpty(connectionString))

backend/WorkClub.Api/WorkClub.Api.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="AspNetCore.HealthChecks.NpgSql" Version="9.0.0" />
-    <PackageReference Include="Finbuckle.MultiTenant.AspNetCore" Version="10.0.3" />
+    <PackageReference Include="Finbuckle.MultiTenant.AspNetCore" Version="9.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.3" />

backend/WorkClub.Application/WorkClub.Application.csproj

@@ -5,7 +5,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Finbuckle.MultiTenant" Version="10.0.3" />
+    <PackageReference Include="Finbuckle.MultiTenant" Version="9.0.0" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.0" />
   </ItemGroup>
 

backend/WorkClub.Infrastructure/Services/TenantProvider.cs

@@ -9,11 +9,11 @@ namespace WorkClub.Infrastructure.Services;
 
 public class TenantProvider : ITenantProvider
 {
-    private readonly IMultiTenantContextAccessor<TenantInfo> _multiTenantContextAccessor;
+    private readonly IMultiTenantContextAccessor _multiTenantContextAccessor;
     private readonly IHttpContextAccessor _httpContextAccessor;
 
     public TenantProvider(
-        IMultiTenantContextAccessor<TenantInfo> multiTenantContextAccessor,
+        IMultiTenantContextAccessor multiTenantContextAccessor,
         IHttpContextAccessor httpContextAccessor)
     {
         _multiTenantContextAccessor = multiTenantContextAccessor;

backend/WorkClub.Infrastructure/WorkClub.Infrastructure.csproj

@@ -6,8 +6,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Finbuckle.MultiTenant" Version="10.0.3" />
-    <PackageReference Include="Finbuckle.MultiTenant.AspNetCore" Version="10.0.3" />
+    <PackageReference Include="Finbuckle.MultiTenant" Version="9.0.0" />
+    <PackageReference Include="Finbuckle.MultiTenant.AspNetCore" Version="9.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>