dawgs Version 2

[zinic]

Summary by CodeRabbit

• New Features

  • Unified database layer with Neo4j and PostgreSQL backends, driver registry, v1 compatibility wrapper, fluent Cypher query builder, traversal framework, and CLI graph visualization.

• Improvements

  • Transactional schema reconciliation, batch/bulk mutation APIs, streaming query results, deterministic query ordering, context-aware cancellation, richer result mapping and formatting, and safer time/string handling.

• Refactor

  • Major API consolidation separating v1/v2 flows and reorganized driver/query/traversal integrations.