feat: Reduce false positives in company verification

Major improvements to company name matching accuracy:

- Add well-known brands dictionary with correct Companies House numbers
  for fast-track verification (Boots, Legal & General, EY, etc.)
- Add safe expansion words (UK, LIMITED, GROUP, PLC) that don't change
  company identity
- Fix core word validation to require original company's core words
- Remove overly aggressive skip words that removed meaningful identifiers
  (industries, technology, consulting, services, etc.)
- Add industry context hints for AI matching
- Fix CVBatchTester JSON deserialization for test files

Before: 98% verified but with false positives like:
- Boots → BOOTS AND BEARDS (wrong)
- Legal & General → LEGAL LIMITED (wrong)

After: 97% verified with correct matches:
- Boots → BOOTS UK LIMITED (correct)
- Legal & General → fast-tracked to correct company

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

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

tests/RealCV.Tests/Integration/CVBatchTester.cs

@@ -53,22 +53,12 @@ public class CVBatchTester
             options.UseSqlServer(connectionString));
 
         // Companies House
-        services.Configure<CompaniesHouseSettings>(options =>
-        {
-            options.BaseUrl = configuration["CompaniesHouse:BaseUrl"] ?? "https://api.company-information.service.gov.uk";
-            options.ApiKey = configuration["CompaniesHouse:ApiKey"] ?? "";
-        });
-
+        services.Configure<CompaniesHouseSettings>(configuration.GetSection("CompaniesHouse"));
         services.AddHttpClient<CompaniesHouseClient>();
 
         // Anthropic (for AI matching)
-        services.Configure<AnthropicSettings>(options =>
-        {
-            options.ApiKey = configuration["Anthropic:ApiKey"] ?? "";
-        });
-
-        services.AddHttpClient<AnthropicClient>();
-        services.AddScoped<ICompanyNameMatcherService, CompanyNameMatcherService>();
+        services.Configure<AnthropicSettings>(configuration.GetSection("Anthropic"));
+        services.AddScoped<ICompanyNameMatcherService, AICompanyNameMatcherService>();
 
         // Services
         services.AddScoped<ICompanyVerifierService, CompanyVerifierService>();
@@ -142,7 +132,7 @@ public class CVBatchTester
         var summary = new CVVerificationSummary
         {
             FileName = Path.GetFileName(filePath),
-            CandidateName = parsedCV.PersonalInfo?.FullName ?? "Unknown"
+            CandidateName = parsedCV.FullName ?? "Unknown"
         };
 
         // Verify employers