feat: Add Education Verification section and use neutral language

- Add Education Verification section to report UI showing institution
  verification status, qualifications, and dates
- Add differentiated icons for Information flags (career, timeline,
  management, education types)
- Change potentially defamatory language to neutral terms:
  - "Diploma Mill" → "Not Accredited"
  - "Suspicious" → "Unrecognised"
  - Flag descriptions now recommend manual verification rather than
    making definitive claims about institution legitimacy

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

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

src/RealCV.Infrastructure/Jobs/ProcessCVCheckJob.cs

@@ -398,8 +398,8 @@ public sealed class ProcessCVCheckJob
             {
                 Category = FlagCategory.Education.ToString(),
                 Severity = FlagSeverity.Critical.ToString(),
-                Title = "Diploma Mill Detected",
-                Description = $"'{edu.ClaimedInstitution}' is a known diploma mill. {edu.VerificationNotes}",
+                Title = "Unaccredited Institution",
+                Description = $"'{edu.ClaimedInstitution}' was not found in accredited institutions databases. Manual verification recommended.",
                 ScoreImpact = -DiplomaMillPenalty
             });
         }
@@ -413,8 +413,8 @@ public sealed class ProcessCVCheckJob
             {
                 Category = FlagCategory.Education.ToString(),
                 Severity = FlagSeverity.Warning.ToString(),
-                Title = "Suspicious Institution",
-                Description = $"'{edu.ClaimedInstitution}' has suspicious characteristics. {edu.VerificationNotes}",
+                Title = "Unrecognised Institution",
+                Description = $"'{edu.ClaimedInstitution}' was not found in recognised institutions databases. Manual verification recommended.",
                 ScoreImpact = -SuspiciousInstitutionPenalty
             });
         }