feat: wecomm support image link

printing/test_wecom_markdown.py

@@ -0,0 +1,23 @@
+from django.test import SimpleTestCase
+
+
+class WeComMarkdownRenderTest(SimpleTestCase):
+    def test_render_process_params_markdown_linkify_http_url(self):
+        from printing.services import render_process_params_markdown
+
+        md = render_process_params_markdown(
+            params={
+                "图片": "https://example.com/a.png",
+                "备注": "不是链接",
+            }
+        )
+
+        self.assertIn("- **图片**：[https://example.com/a.png](https://example.com/a.png)", md)
+        self.assertIn("- **备注**：不是链接", md)
+
+    def test_render_process_params_markdown_linkify_strips_whitespace(self):
+        from printing.services import render_process_params_markdown
+
+        md = render_process_params_markdown(params={"图片": "  https://example.com/a.png  "})
+        self.assertIn("[https://example.com/a.png](https://example.com/a.png)", md)
+