Backend: UTC nel DB, +00:00 nelle API, ora italiana solo in presentazione (#42)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/backend/models/api/measurement.py

@@ -1,5 +1,5 @@
 """Pydantic schemas for Measurement operations."""
-from datetime import datetime
+from src.backend.models.api.tipi import UtcDateTime, UtcNaiveInput
 from typing import Optional
 
 from pydantic import BaseModel, ConfigDict, Field
@@ -54,8 +54,8 @@ class MeasurementResponse(BaseModel):
     # Who let this value stand, when it was out of tolerance. Null on a value in
     # tolerance - and on one that is not and is still waiting for an answer.
     supervisor_id: Optional[int] = None
-    authorised_at: Optional[datetime] = None
-    measured_at: datetime
+    authorised_at: Optional[UtcDateTime] = None
+    measured_at: UtcDateTime
     synced_to_csv: bool
 
 
@@ -97,7 +97,7 @@ class CycleMeasurementResponse(BaseModel):
     subtask_id: int
     value: float
     pass_fail: str
-    measured_at: datetime
+    measured_at: UtcDateTime
 
 
 class CurrentCycleResponse(BaseModel):
@@ -114,8 +114,8 @@ class MeasurementQuery(BaseModel):
     measured_by: Optional[int] = None
     lot_number: Optional[str] = None
     serial_number: Optional[str] = None
-    date_from: Optional[datetime] = None
-    date_to: Optional[datetime] = None
+    date_from: UtcNaiveInput = None
+    date_to: UtcNaiveInput = None
     pass_fail: Optional[str] = Field(None, pattern="^(pass|warning|fail)$")
     page: int = Field(1, ge=1)
     per_page: int = Field(50, ge=1, le=500)