test(tools): add unit tests for error handling functions

* Implement tests for error functions like errRequiredField, errInvalidField, and errEntityNotFound.
* Ensure proper metadata is returned for various error scenarios.
* Validate error handling in CRM, Files, and other tools.
* Introduce tests for parsing stored file IDs and UUIDs.
* Enhance coverage for helper functions related to project resolution and session management.

internal/types/extensions.go

@@ -48,13 +48,13 @@ type MaintenanceTask struct {
 }
 
 type MaintenanceLog struct {
-	ID          uuid.UUID  `json:"id"`
-	TaskID      uuid.UUID  `json:"task_id"`
-	CompletedAt time.Time  `json:"completed_at"`
-	PerformedBy string     `json:"performed_by,omitempty"`
-	Cost        *float64   `json:"cost,omitempty"`
-	Notes       string     `json:"notes,omitempty"`
-	NextAction  string     `json:"next_action,omitempty"`
+	ID          uuid.UUID `json:"id"`
+	TaskID      uuid.UUID `json:"task_id"`
+	CompletedAt time.Time `json:"completed_at"`
+	PerformedBy string    `json:"performed_by,omitempty"`
+	Cost        *float64  `json:"cost,omitempty"`
+	Notes       string    `json:"notes,omitempty"`
+	NextAction  string    `json:"next_action,omitempty"`
 }
 
 type MaintenanceLogWithTask struct {