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_kind.go

@@ -0,0 +1,68 @@
+// 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 (
+	"database/sql/driver"
+	"fmt"
+)
+
+type FindingKind string
+
+const (
+	FindingKindNonconformity FindingKind = "NONCONFORMITY"
+	FindingKindObservation   FindingKind = "OBSERVATION"
+	FindingKindException     FindingKind = "EXCEPTION"
+)
+
+func FindingKinds() []FindingKind {
+	return []FindingKind{
+		FindingKindNonconformity,
+		FindingKindObservation,
+		FindingKindException,
+	}
+}
+
+func (fk FindingKind) String() string {
+	return string(fk)
+}
+
+func (fk *FindingKind) Scan(value any) error {
+	var s string
+	switch v := value.(type) {
+	case string:
+		s = v
+	case []byte:
+		s = string(v)
+	default:
+		return fmt.Errorf("unsupported type for FindingKind: %T", value)
+	}
+
+	switch s {
+	case "NONCONFORMITY":
+		*fk = FindingKindNonconformity
+	case "OBSERVATION":
+		*fk = FindingKindObservation
+	case "EXCEPTION":
+		*fk = FindingKindException
+	default:
+		return fmt.Errorf("invalid FindingKind value: %q", s)
+	}
+	return nil
+}
+
+func (fk FindingKind) Value() (driver.Value, error) {
+	return fk.String(), nil
+}