feat(jobs): expose discovery provenance

JobTrackerApi.Tests/JobDiscoveryControllerTests.cs

@@ -14,7 +14,7 @@ public sealed class JobDiscoveryControllerTests
     public async Task Search_filters_recent_active_nav_jobs()
     {
         const string token = "eyJ.test.token";
-        var feed = """{"next_url":"","items":[{"date_modified":"2026-07-30T10:00:00Z","_feed_entry":{"uuid":"1","status":"ACTIVE","title":"Backend Developer","businessName":"Acme","municipal":"OSLO"}},{"date_modified":"2026-07-30T11:00:00Z","_feed_entry":{"uuid":"2","status":"ACTIVE","title":"Nurse","businessName":"Hospital","municipal":"BERGEN"}}]}""";
+        var feed = """{"next_url":"","items":[{"date_modified":"2026-07-30T10:00:00Z","_feed_entry":{"uuid":"1","status":"ACTIVE","title":"Backend Developer","businessName":"Acme","municipal":"OSLO","applicationDue":"2026-08-15T23:59:59Z"}},{"date_modified":"2026-07-30T11:00:00Z","_feed_entry":{"uuid":"2","status":"ACTIVE","title":"Nurse","businessName":"Hospital","municipal":"BERGEN"}}]}""";
         var client = new HttpClient(new Handler(request => request.RequestUri!.AbsolutePath.EndsWith("publicToken") ? token : feed));
         var controller = new JobDiscoveryController(new ClientFactory(client), new ConfigurationBuilder().Build(), new MemoryCache(new MemoryCacheOptions()));
 
@@ -23,6 +23,11 @@ public sealed class JobDiscoveryControllerTests
         var ok = Assert.IsType<OkObjectResult>(result.Result);
         var job = Assert.Single(Assert.IsAssignableFrom<IReadOnlyList<JobDiscoveryController.DiscoveredJob>>(ok.Value));
         Assert.Equal("Backend Developer", job.Title);
+        Assert.Equal("nav", job.Source);
+        Assert.Equal("NAV Arbeidsplassen", job.SourceName);
+        Assert.Equal("searched", job.AcquisitionType);
+        Assert.Equal(new DateTimeOffset(2026, 8, 15, 23, 59, 59, TimeSpan.Zero), job.Deadline);
+        Assert.True(job.RetrievedAt <= DateTimeOffset.UtcNow);
         Assert.Equal("NO", job.CountryCode);
     }