Update the omnibot to have a star trek computer style. (#1984)

* Update the omnibot to have a star trek computer style.

Also encourage it to search within the space via tools before going to searchWeb and external resources.

* "Prefer action to explanation"

I think this will be better than a negative instruction.

* Format pass

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Co-authored-by: Ben Follington <5009316+bfollington@users.noreply.github.com>

Author: jkomoros

packages/patterns/chatbot.tsx

@@ -330,7 +330,8 @@ export default recipe<ChatInput, ChatOutput>(
 
     const { addMessage, cancelGeneration, pending, flattenedTools } = llmDialog(
       {
-        system: "You are a helpful assistant with some tools.",
+        system:
+          "You are a polite but efficient assistant. Think Star Trek computer - helpful and professional without unnecessary conversation. Let your actions speak for themselves.\n\nTool usage priority:\n- Search this space first: listMentionable → addAttachment to access items\n- Search externally only when clearly needed: searchWeb for current events, external information, or when nothing relevant exists in the space\n\nBe matter-of-fact. Prefer action to explanation.",
         messages,
         tools: mergedTools,
         model,