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/Program.cs

@@ -3,6 +3,7 @@ using CvMatcher.Models.Settings;
 using CvSearch.Data;
 using CvSearchJob.Clients;
 using CvSearchJob.Services;
+using EmailApi.Models.Clients;
 using CvSearchJob.Tasks;
 using JobScheduler.Scheduling;
 using JobScheduler.Tasks;
@@ -64,6 +65,18 @@ try
     });
     builder.Services.AddSingleton<ITemplateService, DbTemplateService>();
 
+    builder.Services.AddRefitClient<IEmailApiClient>()
+        .ConfigureHttpClient((sp, client) =>
+        {
+            var config = sp.GetRequiredService<Microsoft.Extensions.Configuration.IConfiguration>();
+            var baseUrl = config["EmailApi:BaseUrl"] ?? string.Empty;
+            if (!string.IsNullOrWhiteSpace(baseUrl))
+                client.BaseAddress = new Uri(baseUrl.TrimEnd('/') + "/");
+            var key = config["EmailApi:InternalApiKey"];
+            if (!string.IsNullOrWhiteSpace(key))
+                client.DefaultRequestHeaders.Add("X-Internal-Api-Key", key);
+        });
+
     builder.Services.AddHttpClient<HtmlJobSearcher>();
     builder.Services.AddSingleton<CvSearchEmailSender>();