Add UNKNOWN and NOT_IMPLEMENTED measure states

Introduce two new measure states across the full stack: database
migration, Go coredata, GraphQL schema, MCP specification, and
frontend UI (labels, badge variants, and colors).

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

pkg/coredata/mesure_state.go

@@ -28,6 +28,8 @@ const (
 	MeasureStateInProgress
 	MeasureStateNotApplicable
 	MeasureStateImplemented
+	MeasureStateUnknown
+	MeasureStateNotImplemented
 )
 
 func MeasureStates() []MeasureState {
@@ -36,6 +38,8 @@ func MeasureStates() []MeasureState {
 		MeasureStateInProgress,
 		MeasureStateNotApplicable,
 		MeasureStateImplemented,
+		MeasureStateUnknown,
+		MeasureStateNotImplemented,
 	}
 }
 
@@ -55,6 +59,10 @@ func (ms *MeasureState) UnmarshalText(data []byte) error {
 		*ms = MeasureStateNotApplicable
 	case MeasureStateImplemented.String():
 		*ms = MeasureStateImplemented
+	case MeasureStateUnknown.String():
+		*ms = MeasureStateUnknown
+	case MeasureStateNotImplemented.String():
+		*ms = MeasureStateNotImplemented
 	default:
 		return fmt.Errorf("invalid MeasureState value: %q", val)
 	}
@@ -74,6 +82,10 @@ func (ms MeasureState) String() string {
 		val = "NOT_APPLICABLE"
 	case MeasureStateImplemented:
 		val = "IMPLEMENTED"
+	case MeasureStateUnknown:
+		val = "UNKNOWN"
+	case MeasureStateNotImplemented:
+		val = "NOT_IMPLEMENTED"
 	}
 
 	return val