Prevent LLM from signing follow-up messages with random names

Author: eracle

assets/templates/prompts/followup2.j2

@@ -20,3 +20,6 @@ Do **not** use placeholders in the output like the following:
 [Your Name]
 [Your Contact Information]
 [Your Company]
+
+Do **not** sign the message. Do not add any name, signature, closing name, or sign-off name at the end.
+The message must end with the call-to-action sentence itself — never with a name like "Best, John" or "— Sarah" or similar.

tests/test_templates.py

@@ -1,6 +1,7 @@
 # tests/test_templates.py
 from unittest.mock import MagicMock, patch
 
+from linkedin.conf import DEFAULT_FOLLOWUP_TEMPLATE_PATH
 from linkedin.templates.renderer import render_template
 
 
@@ -71,3 +72,24 @@ def test_product_description_empty_when_not_set(self, mock_llm):
 
         prompt = mock_llm.call_args[0][0]
         assert "Product: ''" in prompt
+
+    @patch("linkedin.templates.renderer.call_llm", return_value="Hi Alice, great to connect!")
+    def test_default_followup_template_forbids_signature(self, mock_llm):
+        template_content = DEFAULT_FOLLOWUP_TEMPLATE_PATH.read_text()
+
+        session = self._make_session(product_docs="We sell widgets")
+        render_template(
+            session,
+            template_content,
+            {
+                "full_name": "Alice Smith",
+                "headline": "Engineer",
+                "current_company": "Acme",
+                "location": "London",
+                "shared_connections": 3,
+            },
+        )
+
+        prompt = mock_llm.call_args[0][0]
+        assert "Do **not** sign the message" in prompt
+        assert "never with a name" in prompt