M54: harden operations and demo resilience

backend/app/schemas.py

@@ -4,9 +4,13 @@ import uuid
 from datetime import datetime
 from typing import Annotated, Any, Literal
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, ConfigDict, Field, StringConstraints
 
 Role = Literal["operations_manager", "rental_employee"]
+NonBlankOperationalReason = Annotated[
+    str,
+    StringConstraints(strip_whitespace=True, min_length=3, max_length=500),
+]
 
 
 class DemoLoginRequest(BaseModel):
@@ -93,17 +97,16 @@ class CreateBookingRequest(BaseModel):
     vehicle_ref: str = Field(min_length=3, max_length=20)
     starts_at: datetime
     ends_at: datetime
-    requirements_complete: bool = False
 
 
 class CompleteBookingRequirementsRequest(BaseModel):
-    confirmation: str = Field(min_length=3, max_length=500)
+    confirmation: NonBlankOperationalReason
 
 
 class RescheduleBookingRequest(BaseModel):
     starts_at: datetime
     ends_at: datetime
-    reason: str = Field(min_length=3, max_length=500)
+    reason: NonBlankOperationalReason
 
 
 class CustomerOptionOut(BaseModel):
@@ -122,7 +125,7 @@ class AvailableVehicleOut(BaseModel):
 
 
 class CancelBookingRequest(BaseModel):
-    reason: str = Field(min_length=3, max_length=500)
+    reason: NonBlankOperationalReason
 
 
 class CheckoutBookingRequest(BaseModel):
@@ -225,7 +228,7 @@ class CreateMaintenanceRequest(BaseModel):
 
 
 class ReleaseVehicleRequest(BaseModel):
-    reason: str = Field(min_length=3, max_length=500)
+    reason: NonBlankOperationalReason
 
 
 class DataQualityIssueOut(BaseModel):
@@ -295,7 +298,7 @@ class WorkflowErrorReportIn(BaseModel):
     ]
     error_summary: str = Field(max_length=500)
     trigger_context: str | None = Field(default=None, max_length=200)
-    correlation_id: str | None = None
+    correlation_id: uuid.UUID | None = None
     attempt: int = Field(default=1, ge=1, le=1000)
     retry_action: str | None = Field(default=None, max_length=200)
 
@@ -433,7 +436,8 @@ class ReturnCallbackIn(BaseModel):
 
     model_config = ConfigDict(extra="ignore")
 
-    correlation_id: uuid.UUID | None = None
+    event_id: uuid.UUID
+    correlation_id: uuid.UUID
     follow_up: str | None = Field(default=None, max_length=200)
     summary: str | None = Field(default=None, max_length=2000)