feat: replace direct MailKit in cv-search-job with IEmailApiClient Refit call

- CvSearchEmailSender now injects IEmailApiClient instead of IConfiguration+MailKit
- BuildBody updated to produce styled HTML job cards
- CvSearchJobTask passes only filename (not full path) to email sender
- IEmailApiClient registered in Program.cs with EmailApi:BaseUrl + InternalApiKey
- MailKit removed from cv-search-job.csproj

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Jobs/cv-search-job/cv-search-job.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MailKit" />
+    <!-- MailKit removed — email sending delegated to email-api service -->
     <PackageReference Include="Microsoft.Extensions.Hosting" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" />
     <PackageReference Include="Refit.HttpClientFactory" />
@@ -21,6 +21,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\Apis\cv-matcher-api-models\cv-matcher-api-models.csproj" />
+    <ProjectReference Include="..\..\Apis\email-api-models\email-api-models.csproj" />
     <ProjectReference Include="..\..\Apis\cv-search-data\cv-search-data.csproj" />
     <ProjectReference Include="..\..\Apis\common\common.csproj" />
     <ProjectReference Include="..\..\Helpers\startup-helpers\startup-helpers.csproj" />