diff --git a/src/server/app.py b/src/server/app.py
index ad9f083..a4ade7d 100644
--- a/src/server/app.py
+++ b/src/server/app.py
@@ -22,7 +22,7 @@ class IngestRequest(BaseModel):
     file_path: str | None = None
     content: str | None = None
     file_name: str | None = Field(
-        default=None, max_length=255, pattern=r"^[^\\/:*?\"<>|]+\.md$"
+        default=None, max_length=255
     )
 
 
diff --git a/tests/test_api.py b/tests/test_api.py
index 023c92a..c9f9122 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -110,3 +110,31 @@ class TestSecurity:
             json={"file_path": "C:\\Windows\\System32\\config\\SAM"},
         )
         assert response.status_code in (400, 403)
+
+
+class TestDeleteEndpoint:
+    """删除端点."""
+
+    def test_delete_nonexistent(self, client):
+        """删除不存在的文件返回 404."""
+        response = client.delete("/api/v1/documents/nonexistent.md")
+        assert response.status_code == 404
+
+    def test_delete_ingested(self, client):
+        """删除已入库文件后搜索不再返回."""
+        # 入库
+        ingest_resp = client.post(
+            "/api/v1/ingest",
+            json={"content": "# Test Delete\nHello.", "file_name": "delete-test.md"},
+        )
+        assert ingest_resp.status_code == 200, f"ingest failed: {ingest_resp.json()}"
+        # 删除
+        response = client.delete("/api/v1/documents/delete-test.md")
+        assert response.status_code == 200, f"delete failed: {response.json()}"
+        # 搜索验证已删除
+        search_resp = client.post(
+            "/api/v1/search", json={"query": "Test Delete", "top_k": 3}
+        )
+        results = search_resp.json()["results"]
+        sources = [r["source_file"] for r in results]
+        assert "delete-test.md" not in sources
diff --git a/tests/test_ingest.py b/tests/test_ingest.py
index d2c718a..31f1685 100644
--- a/tests/test_ingest.py
+++ b/tests/test_ingest.py
@@ -85,3 +85,37 @@ class TestDocumentIngestor:
         content = Path(temp_md_dir + "/test.md").read_text(encoding="utf-8")
         assert "测试" in content
         assert "这是测试内容" in content
+
+
+class TestIngestorIntegration:
+    """入库器集成测试 (使用真实 embedder)."""
+
+    def test_ingest_content_real(self, tmp_path):
+        """真实入库: 分块→嵌入→入库."""
+        from src.core.config import EmbedConfig
+        from src.core.db import VectorDB
+        from src.core.embedder import create_embedder
+        from src.core.ingest import DocumentIngestor
+
+        db = VectorDB(persist_dir=str(tmp_path))
+        embedder = create_embedder(EmbedConfig(mode="local"))
+        ingestor = DocumentIngestor(db, embedder, "test_integration")
+
+        count = ingestor.ingest_content("# Hello\nWorld.", "hello.md")
+        assert count > 0
+        assert ingestor.collection.count() == count
+
+    def test_ingest_deduplicates(self, tmp_path):
+        """重复入库同一文件会去重."""
+        from src.core.config import EmbedConfig
+        from src.core.db import VectorDB
+        from src.core.embedder import create_embedder
+        from src.core.ingest import DocumentIngestor
+
+        db = VectorDB(persist_dir=str(tmp_path))
+        embedder = create_embedder(EmbedConfig(mode="local"))
+        ingestor = DocumentIngestor(db, embedder, "test_dedup")
+
+        c1 = ingestor.ingest_content("# A", "dup.md")
+        c2 = ingestor.ingest_content("# B", "dup.md")
+        assert ingestor.collection.count() == c2