FIX: uppercase table_name and table_schema in ES lookup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/services/elasticsearch/elasticsearch.service.ts

@@ -380,8 +380,8 @@ export class ElasticsearchService {
         query: {
           bool: {
             must: [
-              { term: { 'table_name.keyword': tableName } },
-              { term: { 'table_schema.keyword': tableSchema } },
+              { term: { 'table_name.keyword': tableName.toUpperCase() } },
+              { term: { 'table_schema.keyword': tableSchema.toUpperCase() } },
             ],
           },
         },