Use Text output mode to disambiguate from Default data source lookup

Previously if default output was selected by Khoj, we'd end up doing
an documents search as well, even when Khoj selected internet or
general data source to lookup.

This update disambiguates the default information mode from the text
output mode. To avoid doing documents search when not deemed necessary
by Khoj

src/khoj/routers/helpers.py

@@ -287,16 +287,16 @@ async def aget_relevant_output_modes(query: str, conversation_history: dict, is_
         response = response.strip()
 
         if is_none_or_empty(response):
-            return ConversationCommand.Default
+            return ConversationCommand.Text
 
         if response in mode_options.keys():
             # Check whether the tool exists as a valid ConversationCommand
             return ConversationCommand(response)
 
-        return ConversationCommand.Default
-    except Exception as e:
+        return ConversationCommand.Text
+    except Exception:
         logger.error(f"Invalid response for determining relevant mode: {response}")
-        return ConversationCommand.Default
+        return ConversationCommand.Text
 
 
 async def infer_webpage_urls(q: str, conversation_history: dict, location_data: LocationData) -> List[str]:

src/khoj/utils/helpers.py

@@ -304,6 +304,7 @@ class ConversationCommand(str, Enum):
     Online = "online"
     Webpage = "webpage"
     Image = "image"
+    Text = "text"
     Automation = "automation"
     AutomatedTask = "automated_task"
 
@@ -330,7 +331,7 @@ class ConversationCommand(str, Enum):
 mode_descriptions_for_llm = {
     ConversationCommand.Image: "Use this if the user is requesting an image or visual response to their query.",
     ConversationCommand.Automation: "Use this if the user is requesting a response at a scheduled date or time.",
-    ConversationCommand.Default: "Use this if the other response modes don't seem to fit the query.",
+    ConversationCommand.Text: "Use this if the other response modes don't seem to fit the query.",
 }