fix(iris): prevent unsupported comment statements

apps/desktop/src/lib/__tests__/table/tableStructureCapabilities.spec.ts

@@ -28,6 +28,21 @@ describe("tableStructureCapabilities", () => {
     expect(getTableStructureCapabilities("postgres", "postgres").alterStrategy).toBe("direct");
   });
 
+  it("disables persisted comment editing for IRIS without disabling other structure changes", () => {
+    expect(getTableStructureCapabilities("iris", "iris")).toMatchObject({
+      comment: false,
+      addColumn: true,
+      dropColumn: true,
+      renameColumn: true,
+      alterType: true,
+      alterNullability: true,
+      alterDefault: true,
+    });
+    expect(getTableStructureCapabilities("oracle", "oracle").comment).toBe(true);
+    expect(getTableStructureCapabilities("oceanbase-oracle", "oceanbase-oracle").comment).toBe(true);
+    expect(getTableStructureCapabilities("dameng", "dameng").comment).toBe(true);
+  });
+
   it("uses local-only column reordering for editable databases without physical reorder support", () => {
     for (const databaseType of ["sqlserver", "postgres", "sqlite", "oracle", "dameng", "duckdb", "informix"] as const) {
       expect(supportsLocalTableColumnReorder(databaseType, databaseType)).toBe(true);

apps/desktop/src/lib/table/tableStructureCapabilities.ts

@@ -190,6 +190,12 @@ const oracleCapabilities = capabilities({
   indexType: true,
 });
 
+const irisCapabilities = capabilities({
+  ...oracleCapabilities,
+  // IRIS exposes %DESCRIPTION at definition time but cannot alter persisted descriptions.
+  comment: false,
+});
+
 const h2Capabilities = capabilities({
   dialect: "h2",
   createTable: true,
@@ -318,7 +324,7 @@ const capabilityByType: Partial<Record<DatabaseType, TableStructureCapabilities>
   oracle: oracleCapabilities,
   dameng: oracleCapabilities,
   "oceanbase-oracle": oracleCapabilities,
-  iris: oracleCapabilities,
+  iris: irisCapabilities,
   yashandb: oracleCapabilities,
   xugu: oracleCapabilities,
   h2: h2Capabilities,