Add comprehensive CV verification checks and dashboard auto-refresh

- Add dashboard auto-refresh polling to update when processing completes
- Skip verification for freelance employers (but not contractors)
- Add incorporation date check (flags employment before company existed)
- Add dissolution date check (flags employment at dissolved companies)
- Add dormant company check (flags non-director roles at dormant companies)
- Add company size vs role check (flags senior roles at micro-entities)
- Add SIC code mismatch check (flags tech roles at non-tech companies)
- Add director verification against Companies House officers
- Add rapid career progression detection (3+ seniority jumps in <2 years)
- Add early career senior role detection (<2 years after education)
- Extend CompanyVerificationResult with flags and company data
- Add officers endpoint to Companies House client
- Fix null reference warning in Report.razor

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tests/TrueCV.Tests/Jobs/ProcessCVCheckJobTests.cs

@@ -194,7 +194,8 @@ public sealed class ProcessCVCheckJobTests : IDisposable
             x => x.VerifyCompanyAsync(
                 It.IsAny<string>(),
                 It.IsAny<DateOnly?>(),
-                It.IsAny<DateOnly?>()),
+                It.IsAny<DateOnly?>(),
+                It.IsAny<string?>()),
             Times.Exactly(3));
     }
 
@@ -1031,7 +1032,8 @@ public sealed class ProcessCVCheckJobTests : IDisposable
                 .Setup(x => x.VerifyCompanyAsync(
                     It.IsAny<string>(),
                     It.IsAny<DateOnly?>(),
-                    It.IsAny<DateOnly?>()))
+                    It.IsAny<DateOnly?>(),
+                    It.IsAny<string?>()))
                 .ReturnsAsync(() => queue.Count > 0 ? queue.Dequeue() : CreateDefaultVerificationResult());
         }
         else
@@ -1040,7 +1042,8 @@ public sealed class ProcessCVCheckJobTests : IDisposable
                 .Setup(x => x.VerifyCompanyAsync(
                     It.IsAny<string>(),
                     It.IsAny<DateOnly?>(),
-                    It.IsAny<DateOnly?>()))
+                    It.IsAny<DateOnly?>(),
+                    It.IsAny<string?>()))
                 .ReturnsAsync(CreateDefaultVerificationResult());
         }