Fix Telegram link preview suppression for bot sends

tests/gateway/test_config.py

@@ -284,6 +284,22 @@ class TestLoadGatewayConfig:
         assert config.unauthorized_dm_behavior == "ignore"
         assert config.platforms[Platform.WHATSAPP].extra["unauthorized_dm_behavior"] == "pair"
 
+    def test_bridges_telegram_disable_link_previews_from_config_yaml(self, tmp_path, monkeypatch):
+        hermes_home = tmp_path / ".hermes"
+        hermes_home.mkdir()
+        config_path = hermes_home / "config.yaml"
+        config_path.write_text(
+            "telegram:\n"
+            "  disable_link_previews: true\n",
+            encoding="utf-8",
+        )
+
+        monkeypatch.setenv("HERMES_HOME", str(hermes_home))
+
+        config = load_gateway_config()
+
+        assert config.platforms[Platform.TELEGRAM].extra["disable_link_previews"] is True
+
 
 class TestHomeChannelEnvOverrides:
     """Home channel env vars should apply even when the platform was already

tests/tools/test_send_message_tool.py

@@ -577,7 +577,7 @@ class TestSendToPlatformChunking:
 
         sent_calls = []
 
-        async def fake_send(token, chat_id, message, media_files=None, thread_id=None):
+        async def fake_send(token, chat_id, message, media_files=None, thread_id=None, disable_link_previews=False):
             sent_calls.append(media_files or [])
             return {"success": True, "platform": "telegram", "chat_id": chat_id, "message_id": str(len(sent_calls))}
 
@@ -756,6 +756,17 @@ class TestSendTelegramHtmlDetection:
         kwargs = bot.send_message.await_args.kwargs
         assert kwargs["parse_mode"] == "MarkdownV2"
 
+    def test_disable_link_previews_sets_disable_web_page_preview(self, monkeypatch):
+        bot = self._make_bot()
+        _install_telegram_mock(monkeypatch, bot)
+
+        asyncio.run(
+            _send_telegram("tok", "123", "https://example.com", disable_link_previews=True)
+        )
+
+        kwargs = bot.send_message.await_args.kwargs
+        assert kwargs["disable_web_page_preview"] is True
+
     def test_html_with_code_and_pre_tags(self, monkeypatch):
         bot = self._make_bot()
         _install_telegram_mock(monkeypatch, bot)