Refactor document handling and update Milvus collection settings

- Removed multiple failed document entries from `documents.json`.
- Added a new document entry with updated metadata and changed the index name to `regulations_dense_1024_v2`.
- Updated architecture documentation to reflect changes in the Milvus collection name.
- Adjusted requirements by removing the sqlalchemy dependency.
- Modified test cases to align with new document structure and naming conventions.
- Introduced a new test file for Milvus vector index runtime recovery and error handling.
- Updated assertions in various test files to ensure compatibility with the new schema.

tests/test_embedding.py

@@ -122,16 +122,17 @@ class FakeChunkBuilder:
             Chunk(
                 chunk_id=f"{parsed_document.doc_id}-chunk-1",
                 doc_id=parsed_document.doc_id,
-                doc_name=parsed_document.doc_name,
-                content="法规正文",
+                doc_title=parsed_document.doc_name,
+                text="法规正文",
                 embedding_text="标准：测试\n章节：第一章\n\n法规正文",
                 section_title="第一章",
                 section_path=["第一章"],
-                page_number=1,
+                page_start=1,
+                page_end=1,
+                chunk_type="section_text",
                 regulation_type=regulation_type,
                 version=version,
                 semantic_id="semantic-1",
-                block_type="section_text",
                 metadata={"source": "aliyun_vector_chunk"},
             )
         ]