refactor: 下沉资料包列表上下文到 documents 服务层

tests/test_documents.py

@@ -9,7 +9,12 @@ from zipfile import ZipFile
 
 from apps.documents.forms import DocumentUploadForm
 from apps.documents.models import ExportedDocument, SubmissionBatch, UploadedDocument
-from apps.documents.services import extract_text, import_submission_batch, index_document
+from apps.documents.services import (
+    build_document_list_context,
+    extract_text,
+    import_submission_batch,
+    index_document,
+)
 from apps.chat.models import Conversation
 
 
@@ -246,6 +251,34 @@ def test_document_list_supports_batch_id_search(client, db):
     assert "SUB-20260604-001" not in content
 
 
+def test_build_document_list_context_filters_batches_by_keyword(db):
+    target_batch = SubmissionBatch.objects.create(
+        batch_id="SUB-20260604-101",
+        product_name="产品A",
+        workflow_type="registration",
+        conversation_id="conv-101",
+        file_count=2,
+        page_count=12,
+        import_status="completed",
+    )
+    SubmissionBatch.objects.create(
+        batch_id="SUB-20260604-102",
+        product_name="产品B",
+        workflow_type="registration",
+        conversation_id="conv-102",
+        file_count=3,
+        page_count=20,
+        import_status="review_required",
+    )
+
+    context = build_document_list_context(keyword="产品A")
+
+    assert context["keyword"] == "产品A"
+    assert len(context["batches"]) == 1
+    assert context["batches"][0].id == target_batch.id
+    assert context["status_counts"]["total"] == 1
+
+
 def test_import_submission_batch_marks_manual_review_when_product_names_conflict(db):
     files = [
         SimpleUploadedFile(