feat(schemas): add Station and assignment Pydantic schemas

server/schemas/station.py

@@ -0,0 +1,57 @@
+"""Pydantic schemas for Station and StationRecipeAssignment."""
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class StationCreate(BaseModel):
+    code: str = Field(..., min_length=1, max_length=100)
+    name: str = Field(..., min_length=1, max_length=255)
+    location: Optional[str] = Field(default=None, max_length=255)
+    notes: Optional[str] = None
+    active: bool = True
+
+
+class StationUpdate(BaseModel):
+    name: Optional[str] = Field(default=None, min_length=1, max_length=255)
+    location: Optional[str] = Field(default=None, max_length=255)
+    notes: Optional[str] = None
+    active: Optional[bool] = None
+
+
+class StationResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: int
+    code: str
+    name: str
+    location: Optional[str]
+    notes: Optional[str]
+    active: bool
+    created_by: int
+    created_at: datetime
+
+
+class StationRecipeAssignmentCreate(BaseModel):
+    recipe_id: int = Field(..., gt=0)
+
+
+class StationRecipeAssignmentResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: int
+    station_id: int
+    recipe_id: int
+    assigned_by: int
+    assigned_at: datetime
+
+
+class _RecipeSummary(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: int
+    code: str
+    name: str
+    active: bool
+
+
+class StationWithRecipesResponse(StationResponse):
+    recipes: list[_RecipeSummary] = Field(default_factory=list)