Developer tools & observability
NEW:
• Operational context — trace ID per user action through all layers
• Structured sync logging: entity type, record count, duration, trace ID
• File-based log sink (rotating, size-capped)
• Developer tools: log level config, encrypted export
• Secure log sharing with support team
IMPROVED:
• Invoice overdue days moved to domain service
• DST-safe date math across codebase