"""EmbeddingProvider port — 文本向量化能力契约。"""

from typing import Protocol, runtime_checkable


@runtime_checkable
class EmbeddingProvider(Protocol):
    async def embed_text(self, text: str) -> list[float]:
        """Embed a single text into a vector."""
        ...

    async def embed_texts(self, texts: list[str]) -> list[list[float]]:
        """Embed multiple texts into vectors."""
        ...