feat(embedding): create embedding package skeleton

paperforge/embedding/__init__.py

@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+from paperforge.embedding._chroma import (
+    delete_paper_vectors,
+    get_collection,
+    get_vector_db_path,
+)
+from paperforge.embedding.build_state import (
+    get_vector_build_state_path,
+    mark_vector_build_state,
+    read_vector_build_state,
+    write_vector_build_state,
+)
+from paperforge.embedding.builder import embed_paper
+from paperforge.embedding.preflight import _preflight_check
+from paperforge.embedding.search import retrieve_chunks
+from paperforge.embedding.status import get_embed_status
+
+__all__ = [
+    "delete_paper_vectors",
+    "embed_paper",
+    "get_collection",
+    "get_embed_status",
+    "get_vector_build_state_path",
+    "get_vector_db_path",
+    "mark_vector_build_state",
+    "read_vector_build_state",
+    "retrieve_chunks",
+    "write_vector_build_state",
+    "_preflight_check",
+]