fix(graph): register get_verified_market_snapshot in the market ToolNode

The market analyst is bound to call get_verified_market_snapshot and its prompt
requires it as the source of truth, but the tool was missing from the market
ToolNode executor — so the call failed and the model reported it "unavailable"
and skipped verification. Register it (with a regression guard) so the snapshot
actually runs and grounds the report.

tradingagents/graph/trading_graph.py

@@ -32,6 +32,7 @@ from tradingagents.agents.utils.agent_utils import (
     resolve_instrument_identity,
     get_stock_data,
     get_indicators,
+    get_verified_market_snapshot,
     get_fundamentals,
     get_balance_sheet,
     get_cashflow,
@@ -173,6 +174,10 @@ class TradingAgentsGraph:
                     get_stock_data,
                     # Technical indicators
                     get_indicators,
+                    # Deterministic verification snapshot (bound to the analyst
+                    # LLM and required by its prompt; must be executable here or
+                    # the call fails and the model reports it "unavailable").
+                    get_verified_market_snapshot,
                 ]
             ),
             "social": ToolNode(