- ElectionAnalyticsServiceImpl: fix SQL_FAMILY to count candidate's own family members who are active shareholders (candidate-specific, not system-wide)
- ElectionAnalyticsServiceImpl: SQL_SUB_CASTE now groups by m_client.lastname instead of sub_caste_cv_id
- ElectionAnalyticsServiceImpl: SQL_CANDIDATE_INFO fetches candidate client_id, lastname, religion for match highlighting
- ElectionAnalyticsServiceImpl: add getOverallShareholderAnalysis() — returns all demographic breakdowns with no candidate matching
- ElectionAnalyticsService: add getOverallShareholderAnalysis() interface method
- ElectionCandidateApiResource: add GET /{electionId}/shareholders/analysis endpoint
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>