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app/schemas/sr_level.py

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+"""Pydantic schemas for S/R level endpoints."""
+
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+
+class SRLevelResult(BaseModel):
+    """A single support/resistance level."""
+
+    id: int
+    price_level: float
+    type: Literal["support", "resistance"]
+    strength: int = Field(ge=0, le=100)
+    detection_method: Literal["volume_profile", "pivot_point", "merged"]
+    created_at: datetime
+
+
+class SRLevelResponse(BaseModel):
+    """Envelope-ready S/R levels response."""
+
+    symbol: str
+    levels: list[SRLevelResult]
+    count: int