Add finding coredata types and queries

Introduce the Finding, FindingAudit, FindingKind, FindingStatus,
FindingPriority, FindingFilter, and FindingOrderField types in the
coredata layer. Add CRUD operations, list with filtering/pagination,
and audit association queries.

Remove the now-replaced nonconformity and continual_improvement
coredata types. Update entity type registry and snapshot types
to reference the new findings type.

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/finding_order_field.go

@@ -0,0 +1,59 @@
+// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package coredata
+
+import (
+	"fmt"
+)
+
+type FindingOrderField string
+
+const (
+	FindingOrderFieldCreatedAt      FindingOrderField = "CREATED_AT"
+	FindingOrderFieldIdentifiedOn FindingOrderField = "IDENTIFIED_ON"
+	FindingOrderFieldDueDate        FindingOrderField = "DUE_DATE"
+	FindingOrderFieldStatus         FindingOrderField = "STATUS"
+	FindingOrderFieldPriority       FindingOrderField = "PRIORITY"
+	FindingOrderFieldReferenceId    FindingOrderField = "REFERENCE_ID"
+	FindingOrderFieldKind           FindingOrderField = "KIND"
+)
+
+func (p FindingOrderField) Column() string {
+	return string(p)
+}
+
+func (p FindingOrderField) String() string {
+	return string(p)
+}
+
+func (p FindingOrderField) MarshalText() ([]byte, error) {
+	return []byte(p.String()), nil
+}
+
+func (p *FindingOrderField) UnmarshalText(text []byte) error {
+	val := string(text)
+	switch val {
+	case string(FindingOrderFieldCreatedAt),
+		string(FindingOrderFieldIdentifiedOn),
+		string(FindingOrderFieldDueDate),
+		string(FindingOrderFieldStatus),
+		string(FindingOrderFieldPriority),
+		string(FindingOrderFieldReferenceId),
+		string(FindingOrderFieldKind):
+		*p = FindingOrderField(val)
+		return nil
+	}
+	return fmt.Errorf("invalid FindingOrderField value: %q", val)
+}