Add internet job search feature (cv-search-job)

- New cv-search-models shared library: EF entities + CvSearchDbContext for cvSearch schema (JobSearchTokens, JobSearchSessions, JobSearchResults tables)
- New cv-search-job worker service: polls DB for pending sessions, scrapes job boards via configurable HTML scraping, runs LLM scoring via cv-matcher-api, emails ranked results
- cv-matcher-api: JobTokenService creates one-time tokens; JobSearchController handles link clicks and creates sessions
- api: proxies job-search start endpoint, appends job search link to match result email
- CI workflow updated to build and push myai-cv-search-job:staging image
- CLAUDE.md documentation added for all affected services

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

Jobs/cv-search-job/Program.cs

@@ -0,0 +1,86 @@
+using System.Reflection;
+using CvSearch.Models.Data;
+using CvSearch.Models.Settings;
+using CvSearchJob.Clients;
+using CvSearchJob.Services;
+using CvSearchJob.Tasks;
+using JobScheduler.Scheduling;
+using JobScheduler.Tasks;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Refit;
+using Serilog;
+using Shared.Models.Settings;
+using StartupHelpers;
+
+const string ServiceName = "cv-search-job";
+
+StartupExtensions.LoadDotEnvFile();
+var appVersion = StartupExtensions.GetApplicationVersion(Assembly.GetExecutingAssembly());
+
+try
+{
+    var builder = Host.CreateApplicationBuilder(args);
+
+    builder.ConfigureJsonSerilog(ServiceName, appVersion);
+    Log.Information("Starting {Service} version {AppVersion}", ServiceName, appVersion);
+
+    builder.Services.Configure<JobSearchSettings>(builder.Configuration.GetSection("JobSearch"));
+    builder.Services.Configure<DatabaseSettings>(builder.Configuration.GetSection("Database"));
+
+    builder.Services.AddDbContext<CvSearchDbContext>(options =>
+    {
+        var connectionString = builder.Services.GetConfiguredDbConnectionString(builder.Configuration);
+        options.UseSqlServer(connectionString, sql =>
+        {
+            sql.MigrationsAssembly("cv-search-models");
+            sql.MigrationsHistoryTable(CvSearchDbContext.MigrationTableName, CvSearchDbContext.SchemaName);
+        });
+    });
+
+    builder.Services.AddRefitClient<ICvMatcherInternalApi>()
+        .ConfigureHttpClient((sp, client) =>
+        {
+            var config = sp.GetRequiredService<Microsoft.Extensions.Configuration.IConfiguration>();
+            var baseUrl = config["CvMatcherApi:BaseUrl"] ?? string.Empty;
+            if (!string.IsNullOrWhiteSpace(baseUrl))
+                client.BaseAddress = new Uri(baseUrl.TrimEnd('/') + "/");
+            var key = config["CvMatcherApi:InternalApiKey"];
+            if (!string.IsNullOrWhiteSpace(key))
+                client.DefaultRequestHeaders.Add("X-Internal-Api-Key", key);
+        });
+
+    builder.Services.AddHttpClient<HtmlJobSearcher>();
+    builder.Services.AddSingleton<CvSearchEmailSender>();
+
+    builder.Services.AddSingleton<CvSearchJobTask>();
+    builder.Services.AddSingleton<IEnumerable<IJobTask>>(sp => new IJobTask[]
+    {
+        sp.GetRequiredService<CvSearchJobTask>(),
+    });
+
+    builder.Services.AddHostedService<JobSchedulerHostedService>();
+
+    var host = builder.Build();
+
+    host.LogHostStartupDiagnostics(ServiceName);
+
+    Log.Information("Running EF Core migrations for CvSearchDbContext");
+    using (var scope = host.Services.CreateScope())
+    {
+        var db = scope.ServiceProvider.GetRequiredService<CvSearchDbContext>();
+        db.Database.Migrate();
+    }
+
+    Log.Information("{Service} startup complete. Background scheduler is running.", ServiceName);
+    await host.RunAsync();
+}
+catch (Exception ex)
+{
+    Log.Fatal(ex, "{Service} terminated unexpectedly", ServiceName);
+}
+finally
+{
+    Log.CloseAndFlush();
+}