feat: add knowledge base core api

backend/apps/knowledge/tests/test_knowledge_api.py

@@ -0,0 +1,69 @@
+from apps.knowledge.models import KnowledgeBase, KnowledgeChunk, KnowledgeDocument, KnowledgeItem
+
+
+def test_create_and_list_knowledge_base(admin_client, db):
+    response = admin_client.post(
+        "/api/knowledge/bases",
+        data={
+            "name": "税务采集知识库",
+            "description": "税局采集、日志和常见问题",
+            "scope": "数据采集",
+        },
+        content_type="application/json",
+    )
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["name"] == "税务采集知识库"
+    assert payload["enabled"] is True
+
+    response = admin_client.get("/api/knowledge/bases")
+
+    assert response.status_code == 200
+    assert response.json()[0]["name"] == "税务采集知识库"
+
+
+def test_create_knowledge_item_builds_chunks(admin_client, db):
+    base = KnowledgeBase.objects.create(name="税务采集知识库", scope="数据采集")
+
+    response = admin_client.post(
+        "/api/knowledge/items",
+        data={
+            "knowledge_base_id": base.id,
+            "title": "税局采集进度查询",
+            "problem": "客户询问采集进度长时间不更新",
+            "applicable_scope": "生产环境税局采集",
+            "error_code": "",
+            "root_cause": "税局服务响应不稳定",
+            "troubleshooting_steps": "查询 Python 日志并确认采集任务状态",
+            "solution": "告知客户税局不稳定，任务仍在采集中，稍后复查。",
+            "risk_note": "不要重复触发采集任务。",
+            "status": "published",
+        },
+        content_type="application/json",
+    )
+
+    assert response.status_code == 200
+    item = KnowledgeItem.objects.get(id=response.json()["id"])
+    assert item.status == "published"
+    assert KnowledgeChunk.objects.filter(item=item).count() >= 1
+
+
+def test_ingest_document_text_creates_document_and_chunks(admin_client, db):
+    base = KnowledgeBase.objects.create(name="日志知识库", scope="技术支持")
+
+    response = admin_client.post(
+        "/api/knowledge/documents",
+        data={
+            "knowledge_base_id": base.id,
+            "file_name": "tax-log.md",
+            "file_type": "markdown",
+            "content": "税局接口不稳定时，采集任务会停留在处理中。需要查询 Python 日志确认。",
+        },
+        content_type="application/json",
+    )
+
+    assert response.status_code == 200
+    document = KnowledgeDocument.objects.get(id=response.json()["id"])
+    assert document.parse_status == "success"
+    assert KnowledgeChunk.objects.filter(document=document).count() >= 1