qx-core 0.2.0

Qx framework core primitives: Result, Error, Entity, RequestContext

qx-core

Foundational primitives for the Qx framework.

What lives here

• qx.core.result — Result[T] algebraic type with success/failure variants and combinators.
• qx.core.errors — Canonical error hierarchy (Error, ValidationError, DomainError, NotFoundError, etc.) used across the framework. HTTP/gRPC layers map these to transport codes.
• qx.core.entities — Base Entity, AggregateRoot, and ValueObject with auditing, optimistic concurrency, and soft-delete.
• qx.core.context — RequestContext propagated via contextvars across async boundaries (request_id, correlation_id, trace_id, user_id, tenant_id).
• qx.core.domain — DomainEvent, IntegrationEvent, Notification base types.
• qx.core.types — Common types: Identifier, Page, Cursor, Sort, Filter.
• qx.core.config — Layered configuration via pydantic-settings.

Design rules

• This package has zero infrastructure dependencies. No SQLAlchemy, no Redis, no FastAPI, no NATS.
• Public API is exported from qx.core. Submodules are implementation detail and may move.
• Backward compatibility from 0.x is best-effort; 1.0 will lock the API surface.