chore: update gitignore; feat: 新增customer_agent业务模块与api路由

rag/embedding.py

@@ -0,0 +1,30 @@
+"""Embedding provider wrapper for Milvus ingestion and retrieval."""
+from __future__ import annotations
+
+import logging
+
+from tool.llm import llm
+
+
+logger = logging.getLogger("rag.embedding")
+EMBEDDING_DIMENSION = 768
+
+
+class EmbeddingError(RuntimeError):
+    """Raised when the embedding provider fails or returns invalid vectors."""
+
+
+async def embed_texts(texts: list[str], *, client=None) -> list[list[float]]:
+    if not texts:
+        return []
+    provider = client or llm
+    try:
+        vectors = await provider.embed(texts)
+    except Exception as exc:  # provider-specific exceptions are normalized here
+        logger.exception("embedding provider failed")
+        raise EmbeddingError("Embedding service unavailable") from exc
+    if len(vectors) != len(texts) or any(
+        len(vector) != EMBEDDING_DIMENSION for vector in vectors
+    ):
+        raise EmbeddingError(f"Embedding dimension must be {EMBEDDING_DIMENSION}")
+    return vectors