Release v1.4.1: Security Hardening CRITICAL SECURITY RELEASE Fixes 8 security vulnerabilities: - Command injection (CRITICAL) - Path traversal (HIGH) - Input validation (HIGH) - Deserialization security (HIGH) - Error disclosure (MEDIUM-HIGH) - ReDoS protection (MEDIUM) - File size limits (MEDIUM) - Error boundaries (MEDIUM) New Security Features: ✅ Comprehensive input validation framework ✅ Path traversal protection ✅ Safe command execution ✅ Error message sanitization ✅ Resource limits enforcement ✅ Global error handlers ✅ Type safety improvements Code Quality: ✅ Biome linter/formatter added ✅ 90% reduction in 'any' usage ✅ All 94 tests passing ✅ No breaking changes Security Posture: CRITICAL → LOW Risk Level: Production Ready All users should upgrade immediately.