test: triage round 2 — 10 more corpus slugs (13 ok total); gap catch widened

Classifications from the round-2 sweep (all verified against the parquet
oracle with the fixes on this branch): uci-adult, uci-abalone,
uci-mushroom, uci-forest-fires, uci-dry-bean-dataset, insurance,
international-football ok; uci-auto-mpg + uci-heart-disease gap:208
(unsigned U8 columns); uci-magic-gamma-telescope gap:215 (new finding:
narrow dict-offset ptypes IOOBE in VarBinArray.DictMode).

assertStillFails now accepts any RuntimeException as a reproducing gap:
a gap may surface as IndexOutOfBoundsException before its decoder gains
proper VortexException bounds guards (#215 does exactly that).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: dfa1

docs/compatibility.md

@@ -62,11 +62,12 @@ Per-slug status lives in `integration/src/test/resources/raincloud/expected-stat
 (`ok` must pass; `gap:<issue>` must still fail, so a fix flips the entry in the same change;
 `untriaged` runs and reports without failing the build). A scheduled workflow
 (`raincloud-conformance.yml`) hydrates a size-capped subset weekly. Current triage —
-6 `ok`, 4 known gaps: nested struct columns in scan
+13 `ok`, 7 known gaps: nested struct columns in scan
 ([#207](https://github.com/dfa1/vortex-java/issues/207)), unsigned integers rendered signed
-([#208](https://github.com/dfa1/vortex-java/issues/208) — silent corruption), RLE over F64
-([#209](https://github.com/dfa1/vortex-java/issues/209)); 237 slugs untriaged. Fixed so
-far by this suite: lazy dict U8/U16 values
+([#208](https://github.com/dfa1/vortex-java/issues/208) — silent corruption, 4 datasets),
+RLE over F64 ([#209](https://github.com/dfa1/vortex-java/issues/209)), narrow dict-offset
+ptypes in string dicts ([#215](https://github.com/dfa1/vortex-java/issues/215));
+227 slugs untriaged. Fixed so far by this suite: lazy dict U8/U16 values
 ([#206](https://github.com/dfa1/vortex-java/issues/206)), row validity dropped by wrapper
 decoders ([#210](https://github.com/dfa1/vortex-java/issues/210) — silent corruption),
 all-null columns in CSV export

integration/src/test/java/io/github/dfa1/vortex/integration/RaincloudConformanceIntegrationTest.java

@@ -6,7 +6,6 @@
 import dev.hardwood.reader.ParquetFileReader;
 import dev.hardwood.reader.RowReader;
 import dev.hardwood.schema.ColumnSchema;
-import io.github.dfa1.vortex.core.error.VortexException;
 import io.github.dfa1.vortex.csv.CsvExporter;
 import io.github.dfa1.vortex.csv.ExportOptions;
 import org.junit.jupiter.api.DynamicTest;
@@ -109,12 +108,14 @@ private static void reportUntriaged(Path vortex, Path parquet) {
     }
 
     private static void assertStillFails(Path vortex, Path parquet, String status) {
-        // Given / When — a decode gap still reproduces when the export itself throws;
-        // no oracle needed (the oracle may not even read this parquet, e.g. nested columns)
+        // Given / When — a decode gap still reproduces when the export itself throws; any
+        // RuntimeException counts (a gap may surface as IndexOutOfBoundsException before its
+        // decoder gains proper VortexException bounds guards, e.g. #215). No oracle needed
+        // (the oracle may not even read this parquet, e.g. nested columns).
         List<String> result;
         try {
             result = exportVortex(vortex);
-        } catch (VortexException e) {
+        } catch (RuntimeException e) {
             return;
         } catch (IOException e) {
             throw new UncheckedIOException(e);

integration/src/test/resources/raincloud/expected-status.csv

@@ -121,8 +121,8 @@ hotel-booking-demand,untriaged
 hotpotqa-fullwiki,untriaged
 housing-prices-dataset,untriaged
 humaneval,untriaged
-insurance,untriaged
-international-football-results-from-1872-to-2017,untriaged
+insurance,ok
+international-football-results-from-1872-to-2017,ok
 iowa-liquor-sales,untriaged
 kepler-exoplanet-search-results,ok
 kepler-labelled-time-series-data,untriaged
@@ -186,11 +186,11 @@ tinystories,untriaged
 titanic-dataset,untriaged
 truthfulqa-mc,untriaged
 uber-pickups-in-new-york-city,untriaged
-uci-abalone,untriaged
-uci-adult,untriaged
+uci-abalone,ok
+uci-adult,ok
 uci-ai4i-2020-predictive-maintenance,untriaged
 uci-air-quality,untriaged
-uci-auto-mpg,untriaged
+uci-auto-mpg,gap:208
 uci-automobile,untriaged
 uci-bank-marketing,untriaged
 uci-beijing-multi-site-air-quality,untriaged
@@ -207,18 +207,18 @@ uci-credit-approval,untriaged
 uci-default-of-credit-card-clients,untriaged
 uci-diabetes,untriaged
 uci-diabetes-130-us-hospitals,untriaged
-uci-dry-bean-dataset,untriaged
+uci-dry-bean-dataset,ok
 uci-electricityloaddiagrams20112014,untriaged
 uci-energy-efficiency,untriaged
 uci-estimation-of-obesity-levels,ok
-uci-forest-fires,untriaged
-uci-heart-disease,untriaged
+uci-forest-fires,ok
+uci-heart-disease,gap:208
 uci-heart-failure-clinical-records,untriaged
 uci-human-activity-recognition-using-smartphones,untriaged
 uci-individual-household-electric-power-consumption,untriaged
 uci-iris,ok
-uci-magic-gamma-telescope,untriaged
-uci-mushroom,untriaged
+uci-magic-gamma-telescope,gap:215
+uci-mushroom,ok
 uci-online-retail,untriaged
 uci-online-retail-ii,untriaged
 uci-online-shoppers-purchasing-intention,untriaged