Refactor SQL agent and related nodes

- Rename `VectorStoreAgent` to `Vector store agent` in `custom.py`
- Replace "Construct a sql agent from an LLM and tools." with "Construct an SQL agent from an LLM and tools." in `custom.py`
- Update descriptions of `SQLAgentNode`, `TimeTravelGuideChainNode`, `CombineDocsChainNode`, and `ToolNode` in related files
- Increase width of `ExtraSidebarComponent` container in `index.tsx` from 52 to 56

src/backend/langflow/interface/agents/custom.py

@@ -120,7 +120,7 @@ class CSVAgent(CustomAgentExecutor):
 
 
 class VectorStoreAgent(CustomAgentExecutor):
-    """Vector Store agent"""
+    """Vector store agent"""
 
     @staticmethod
     def function_name():
@@ -175,7 +175,7 @@ class SQLAgent(CustomAgentExecutor):
     def from_toolkit_and_llm(
         cls, llm: BaseLanguageModel, database_uri: str, **kwargs: Any
     ):
-        """Construct a sql agent from an LLM and tools."""
+        """Construct an SQL agent from an LLM and tools."""
         db = SQLDatabase.from_uri(database_uri)
         toolkit = SQLDatabaseToolkit(db=db, llm=llm)
 

src/backend/langflow/template/frontend_node/agents.py

@@ -37,7 +37,7 @@ class SQLAgentNode(FrontendNode):
             ),
         ],
     )
-    description: str = """Construct a sql agent from an LLM and tools."""
+    description: str = """Construct an SQL agent from an LLM and tools."""
     base_classes: list[str] = ["AgentExecutor"]
 
     def to_dict(self):

src/backend/langflow/template/frontend_node/chains.py

@@ -126,7 +126,7 @@ class TimeTravelGuideChainNode(FrontendNode):
             ),
         ],
     )
-    description: str = "Time travel guide chain to be used in the flow."
+    description: str = "Time travel guide chain."
     base_classes: list[str] = [
         "LLMChain",
         "BaseCustomChain",
@@ -197,7 +197,7 @@ class CombineDocsChainNode(FrontendNode):
             ),
         ],
     )
-    description: str = """Construct a zero shot agent from an LLM and tools."""
+    description: str = """Construct a chain from combined documents."""
     base_classes: list[str] = ["BaseCombineDocumentsChain", "function"]
 
     def to_dict(self):

src/backend/langflow/template/frontend_node/tools.py

@@ -52,7 +52,7 @@ class ToolNode(FrontendNode):
             ),
         ],
     )
-    description: str = "Tool to be used in the flow."
+    description: str = "Converts a chain, agent or function into a tool."
     base_classes: list[str] = ["Tool"]
 
     def to_dict(self):

src/frontend/src/pages/FlowPage/components/extraSidebarComponent/index.tsx

@@ -72,7 +72,7 @@ export default function ExtraSidebar() {
   }
 
   return (
-    <div className="w-52 flex flex-col overflow-hidden scrollbar-hide h-full border-r">
+    <div className="w-56 flex flex-col overflow-hidden scrollbar-hide h-full border-r">
       <div className="mt-2 mb-2 w-full flex gap-2 justify-between px-2 items-center">
         <ShadTooltip delayDuration={1000} content="Import" side="top">
           <button