update to vectara-agentic 0.1.8 and minor updates

agent.py

@@ -37,7 +37,7 @@ def create_assistant_tools(cfg):
     ask_hackernews = vec_factory.create_rag_tool(
         tool_name = "ask_hackernews",
         tool_description = """
-        Responds to query based on information and stories in hacker news from the last 6-9 months.
+        Provides information on any topic or query, based on relevant hacker news stories.
         """,
         tool_args_schema = QueryHackerNews,
         reranker = "multilingual_reranker_v1", rerank_k = 100, 
@@ -126,6 +126,7 @@ def create_assistant_tools(cfg):
         return summarize_text(all_stories)
     
     return (
+        [ask_hackernews] + 
         [tools_factory.create_tool(tool) for tool in 
             [
                 get_top_stories, 
@@ -140,20 +141,17 @@ def create_assistant_tools(cfg):
             "tavily_research", "TavilyToolSpec", 
             tool_name_prefix="tavily", api_key=cfg.tavily_api_key
         ) +
-        tools_factory.standard_tools() + 
-        tools_factory.guardrail_tools() +
-        [ask_hackernews]
+        tools_factory.standard_tools()
     )
 
 def initialize_agent(_cfg, update_func = None):
     bot_instructions = """
     - You are a helpful assistant, with expertise in answering user questions based on Hacker News stories and comments.
+    - Always call the ask_hackernews tool first as your primary source of information. Then try other tools.
     - Give slight preference to newer stories when answering questions.
-    - Use the ask_hackernews tool to find relevant Hacker News stories and respond to user queries based on that information.
     - when you include links to Hacker News stories, use the actual title of the story as the link's displayed text.
       Don't use text like "Source" which doesn't tell the user what the link is about.
     - Don't include external links in your responses unless the user asks for them.
-    - Always call the ask_hackernews tool first as your primary source of information. 
     - You can use the tavily_search tool to gain additional information if needed for follow up questions about Hacker News topic.
     - When including information or links provided by the tavily_search tool, make sure to notify the user in your response that this is not based on Hacker News stories.
     """

app.py

@@ -62,7 +62,7 @@ async def launch_bot():
         cfg = get_agent_config()
         st.session_state.cfg = cfg
         st.session_state.ex_prompt = None
-        example_messages = [example.strip() for example in cfg.examples.split(",")] if cfg.examples else []
+        example_messages = [example.strip() for example in cfg.examples.split(";")] if cfg.examples else []
         st.session_state.example_messages = [em for em in example_messages if len(em)>0]
         reset()    
     cfg = st.session_state.cfg

requirements.txt

@@ -6,4 +6,4 @@ streamlit_feedback==0.1.3
 langdetect==1.0.9
 langcodes==3.4.0
 uuid==1.30
-vectara-agentic==0.1.7
+vectara-agentic==0.1.8