feat(t214): persist candidate observation identities

backend-api/internal/platform/migration/runner_test.go

@@ -27,8 +27,8 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Up() error = %v", err)
 	}
-	if applied != 6 {
-		t.Fatalf("Up() applied = %d, want 6", applied)
+	if applied != 7 {
+		t.Fatalf("Up() applied = %d, want 7", applied)
 	}
 	assertStatuses(t, runner, map[int64]bool{
 		1: true,
@@ -37,6 +37,7 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		4: true,
 		5: true,
 		6: true,
+		7: true,
 	})
 
 	applied, err = runner.Up(context.Background())
@@ -56,7 +57,8 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		3: true,
 		4: true,
 		5: true,
-		6: false,
+		6: true,
+		7: false,
 	})
 
 	applied, err = runner.Up(context.Background())
@@ -73,6 +75,7 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		4: true,
 		5: true,
 		6: true,
+		7: true,
 	})
 }