Hello @transistive 👋

I've prepared a detailed overview of all the architectural and functional changes included in this PR.

Driver-Level executeQuery() Implementation

• Implemented complete executeQuery() method across the Neo4j PHP Client following the driver API specification.

• Added executeQuery() method in BoltDriver, Neo4jDriver, and DriverInterface.

• Supports comprehensive execution configuration including database selection, read/write routing, user impersonation, transaction metadata, and timeout settings.

• Executes queries in auto-commit transactions with built-in retry logic via readTransaction() or writeTransaction().

• Automatically manages session lifecycle with proper cleanup in finally block ensuring resource safety.

• Integrated full driver → testkit backend request handler chain with fallback support for legacy drivers.

GetServerInfo End-to-End Implementation

• Implemented complete GetServerInfo flow across the Neo4j PHP Client and Testkit backend.

• Added getServerInfo() method in BoltDriver, Neo4jDriver, and DriverInterface.

• Integrated full driver → connection → backend response chain for server metadata retrieval.

• Extracts server metadata (address, protocol, agent) from live connections for accurate reporting.

• Neo4jDriver defaults to READ access mode for routing to follower nodes when fetching server info.

• Provides consistent driver information for Testkit compliance and driver introspection.

Session Management Improvements

• Session::close() now discards unconsumed results on all used connections for proper resource cleanup.

• Prevents resource leaks by sending DISCARD protocol messages when results remain partially consumed.

• Improved session consistency during concurrent or retried operations.

• Ensures stable and predictable session behavior across driver invocations.

Testkit Backend Integration

• Updated RequestFactory to map GetServerInfo request type to GetServerInfoRequest handler.

• Configured ExecuteQueryRequest handler with fallback support for drivers without native executeQuery() method.

• Testkit.sh configured to validate driver_execute_query test suite compliance.

• Enables full testkit protocol compliance for Neo4j driver testing infrastructure.