"""engine/ — shard-wiki's native, headless wiki engine (a canonical-mode shard backend).

A small page-store kernel + a typed-extension runtime (WikiEngineCoreArchitecture). The engine
is *one shard*: it is consumed by the orchestrator only via its `EngineShardAdapter`; it never
imports the derived tier (`union`/`projection`).
"""

from shard_wiki.engine.extension import (
    ActiveExtensions,
    Extension,
    ExtensionError,
    ExtensionRuntime,
    Hook,
)
from shard_wiki.engine.kernel import EngineKernel
from shard_wiki.engine.links import extract_wikilinks

__all__ = [
    "EngineKernel",
    "extract_wikilinks",
    "Hook",
    "Extension",
    "ExtensionError",
    "ExtensionRuntime",
    "ActiveExtensions",
]