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contracts/assumption_v1.py

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+from pydantic import BaseModel, Field, ConfigDict
+from typing import List, Optional
+
+class AssumptionV1(BaseModel):
+    model_config = ConfigDict(extra='forbid', frozen=True, strict=True)
+    assumption_id: str
+    text: str
+    level: int = Field(ge=1, le=3, description="1=observed,2=educated,3=strategic")
+    confidence: float = Field(ge=0.0, le=1.0)
+    evidence: List[str] = []
+    validation_exp_id: Optional[str] = None