chore(lint): make the repository ruff-clean under the strict select

Clear the deferred full-repo lint backlog so the whole tree passes the strict
ruff select (E,W,F,I,B,UP,C4,SIM). Mechanical fixes dominate: import sorting,
pep585/604 annotations, dropped dead imports, and whitespace. The few semantic
changes are behavior-preserving: declare __all__ on the agent_utils and
alpha_vantage re-export hubs; expand 'from x import *' to explicit names; use
immutable tuple defaults instead of mutable list defaults; contextlib.suppress
for try/except/pass; and narrow an over-broad assertRaises.

tradingagents/graph/setup.py

@@ -1,10 +1,25 @@
 # TradingAgents/graph/setup.py
 
-from typing import Any, Dict
+from typing import Any
+
 from langgraph.graph import END, START, StateGraph
 from langgraph.prebuilt import ToolNode
 
-from tradingagents.agents import *
+from tradingagents.agents import (
+    create_aggressive_debator,
+    create_bear_researcher,
+    create_bull_researcher,
+    create_conservative_debator,
+    create_fundamentals_analyst,
+    create_market_analyst,
+    create_msg_delete,
+    create_neutral_debator,
+    create_news_analyst,
+    create_portfolio_manager,
+    create_research_manager,
+    create_sentiment_analyst,
+    create_trader,
+)
 from tradingagents.agents.utils.agent_states import AgentState
 
 from .analyst_execution import build_analyst_execution_plan
@@ -18,7 +33,7 @@ class GraphSetup:
         self,
         quick_thinking_llm: Any,
         deep_thinking_llm: Any,
-        tool_nodes: Dict[str, ToolNode],
+        tool_nodes: dict[str, ToolNode],
         conditional_logic: ConditionalLogic,
         analyst_concurrency_limit: int = 1,
     ):
@@ -30,7 +45,7 @@ class GraphSetup:
         self.analyst_concurrency_limit = analyst_concurrency_limit
 
     def setup_graph(
-        self, selected_analysts=["market", "social", "news", "fundamentals"]
+        self, selected_analysts=("market", "social", "news", "fundamentals")
     ):
         """Set up and compile the agent workflow graph.