refactor: reconcile FundamentalsSnapshot to use canonical schema from trading.py

shared/fundamentals/base.py

@@ -3,34 +3,12 @@
 from __future__ import annotations
 
 from abc import ABC, abstractmethod
-from datetime import UTC, datetime
 
-from pydantic import BaseModel, Field
+from shared.schemas.trading import FundamentalsSnapshot  # canonical definition
 
-
-# ---------------------------------------------------------------------------
-# FundamentalsSnapshot — canonical schema
-#
-# NOTE: This is the authoritative definition until it is moved into
-# ``shared.schemas.trading``.  Once the parallel schema task lands, delete
-# this class and update all imports to point at the schemas module.
-# ---------------------------------------------------------------------------
-
-
-class FundamentalsSnapshot(BaseModel):
-    """Point-in-time snapshot of a stock's fundamental financial metrics."""
-
-    ticker: str
-    eps: float | None = None
-    pe_ratio: float | None = None
-    peg_ratio: float | None = None
-    revenue_growth: float | None = None
-    profit_margin: float | None = None
-    debt_to_equity: float | None = None
-    market_cap: float | None = None
-    fetched_at: datetime = Field(default_factory=lambda: datetime.now(UTC))
-
-    model_config = {"from_attributes": True}
+# Re-export so existing ``from shared.fundamentals.base import FundamentalsSnapshot``
+# continues to work throughout the codebase.
+__all__ = ["FundamentalsSnapshot", "FundamentalsProvider"]
 
 
 # ---------------------------------------------------------------------------