feat: Add text analysis checks for CV verification

Implement four new CV verification checks without external APIs:

1. Buzzword detection - flags excessive clichés (50+ patterns)
2. Vague achievement detection - identifies weak language vs quantified results
3. Skills/job title alignment - checks skills match claimed roles (25+ role mappings)
4. Unrealistic metrics detection - flags implausible claims (>200% growth, etc.)

New files:
- ITextAnalysisService interface
- TextAnalysisResult models
- TextAnalysisService implementation (~400 lines)

Integration:
- Added "Analysing Content" processing stage
- Flags appear under Plausibility category
- TextAnalysis section added to veracity report

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

tests/RealCV.Tests/Jobs/ProcessCVCheckJobTests.cs

@@ -20,6 +20,7 @@ public sealed class ProcessCVCheckJobTests : IDisposable
     private readonly Mock<ICompanyVerifierService> _companyVerifierServiceMock;
     private readonly Mock<IEducationVerifierService> _educationVerifierServiceMock;
     private readonly Mock<ITimelineAnalyserService> _timelineAnalyserServiceMock;
+    private readonly Mock<ITextAnalysisService> _textAnalysisServiceMock;
     private readonly Mock<IAuditService> _auditServiceMock;
     private readonly Mock<ILogger<ProcessCVCheckJob>> _loggerMock;
     private readonly ProcessCVCheckJob _sut;
@@ -41,6 +42,7 @@ public sealed class ProcessCVCheckJobTests : IDisposable
         _companyVerifierServiceMock = new Mock<ICompanyVerifierService>();
         _educationVerifierServiceMock = new Mock<IEducationVerifierService>();
         _timelineAnalyserServiceMock = new Mock<ITimelineAnalyserService>();
+        _textAnalysisServiceMock = new Mock<ITextAnalysisService>();
         _auditServiceMock = new Mock<IAuditService>();
         _loggerMock = new Mock<ILogger<ProcessCVCheckJob>>();
 
@@ -51,6 +53,7 @@ public sealed class ProcessCVCheckJobTests : IDisposable
             _companyVerifierServiceMock.Object,
             _educationVerifierServiceMock.Object,
             _timelineAnalyserServiceMock.Object,
+            _textAnalysisServiceMock.Object,
             _auditServiceMock.Object,
             _loggerMock.Object);
     }
@@ -1073,6 +1076,10 @@ public sealed class ProcessCVCheckJobTests : IDisposable
         _timelineAnalyserServiceMock
             .Setup(x => x.Analyse(It.IsAny<List<EmploymentEntry>>()))
             .Returns(timelineResult);
+
+        _textAnalysisServiceMock
+            .Setup(x => x.Analyse(It.IsAny<CVData>()))
+            .Returns(new TextAnalysisResult());
     }
 
     private static CVData CreateTestCVData(int employmentCount = 1)