feat(catalog): surface object type and warn when views skip sampling

- Data Catalog: show 'Object Type' (title-cased) as the first attribute on the
  table Characteristics card, mirroring 'Data Type' for columns. Sourced from
  data_table_chars.object_type via get_tables_by_condition.
- Table group form: under Sampling Parameters, show a yellow warning icon + note
  that views are profiled in full, only for flavors whose sample clause skips
  views (SQL Server, PostgreSQL) and only when sampling is enabled.

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

Author: aarthy-dk

testgen/ui/components/frontend/js/data_profiling/data_characteristics.js

@@ -36,6 +36,9 @@ const DataCharacteristicsCard = (/** @type Properties */ props, /** @type Column
             );
         }
     } else {
+        if (item.object_type) {
+            attributes.push({ key: 'object_type', label: 'Object Type' });
+        }
         attributes.push(
             { key: 'functional_table_type', label: `Semantic Table Type ${item.is_latest_profile ? '*' : ''}` },
         );
@@ -77,6 +80,10 @@ const DataCharacteristicsCard = (/** @type Properties */ props, /** @type Column
                                 );
                             } else if (key === 'datatype_suggestion') {
                                 value = (value || '').toLowerCase();
+                            } else if (key === 'object_type') {
+                                value = (value || '').split('_')
+                                    .map(word => word ? (word[0].toUpperCase() + word.substring(1).toLowerCase()) : '')
+                                    .join(' ');
                             } else if (key === 'functional_table_type') {
                                 value = (value || '').split('-')
                                     .map(word => word ? (word[0].toUpperCase() + word.substring(1)) : '')

testgen/ui/components/frontend/js/data_profiling/data_profiling_utils.js

@@ -150,6 +150,7 @@
  * @property {string} connection_id
  * @property {string} project_code
  * * Characteristics
+ * @property {string} object_type
  * @property {string} functional_table_type
  * @property {number} approx_record_ct
  * @property {number} record_ct

testgen/ui/queries/profiling_queries.py

@@ -255,6 +255,7 @@ def get_tables_by_condition(
         table_chars.schema_name,
         table_chars.table_groups_id::VARCHAR AS table_group_id,
         -- Characteristics
+        table_chars.object_type,
         functional_table_type,
         approx_record_ct,
         table_chars.record_ct,

testgen/ui/static/js/components/table_group_form.js

@@ -55,8 +55,12 @@ import { required } from '../form_validators.js';
 import { Select } from './select.js';
 import { Caption } from './caption.js';
 import { Textarea } from './textarea.js';
+import { Icon } from './icon.js';
 
-const { div } = van.tags;
+// Flavors whose profiling sample clause cannot sample views — views are profiled in full.
+const SAMPLE_SKIPS_VIEWS_FLAVORS = ['mssql', 'postgresql'];
+
+const { div, span } = van.tags;
 
 const normalizeTableSet = (value) => {
     return value?.split(/[,\n]/)
@@ -119,6 +123,13 @@ const TableGroupForm = (props) => {
         return flavor === 'salesforce_data360';
     });
 
+    const sampleSkipsViews = van.derive(() => {
+        const connections = getValue(props.connections) ?? [];
+        const selected = connections.find(c => c.connection_id === tableGroupConnectionId.val);
+        const flavor = selected?.sql_flavor ?? getValue(props.sqlFlavor);
+        return SAMPLE_SKIPS_VIEWS_FLAVORS.includes(flavor);
+    });
+
     const updatedTableGroup = van.derive(() => {
         return {
             id: tableGroup.id,
@@ -206,7 +217,7 @@ const TableGroupForm = (props) => {
             addScorecardDefinition,
         ),
         SamplingForm(
-            { setValidity: setFieldValidity },
+            { setValidity: setFieldValidity, sampleSkipsViews },
             profileUseSampling,
             profileSamplePercent,
             profileSampleMinCount,
@@ -447,6 +458,13 @@ const SamplingForm = (
                     },
                 }),
             ),
+            () => (getValue(options.sampleSkipsViews) && profileUseSampling.val)
+                ? div(
+                    { class: 'flex-row fx-align-center fx-gap-1' },
+                    Icon({ style: 'color: var(--orange); font-size: 18px;' }, 'warning'),
+                    span('Views are profiled in full on this database — sampling applies only to tables and materialized views.'),
+                )
+                : '',
         ),
     );
 };