feat(elasticsearch): add SQL-model execution with mapping-aware completion

- Route SELECT * FROM <index> through /_search for simple browses; aggregates/projections stay on /_sql
- Drive completion columns from /_mapping (flattened dotted fields, multi-fields)
- Switch editor completion to SQL when the active statement starts with SELECT/WITH on ES
- Skip generic SQL semantic diagnostics for ES (hyphenated wildcard indices caused 500s)
- Wire ES into server-side pagination plan; derive completion context from line blocks
- Fix result-grid pagination exceeding in-memory result sets (allRowsLoaded)

apps/desktop/src/stores/queryStore.ts

@@ -1270,6 +1270,20 @@ export const useQueryStore = defineStore("query", () => {
           current.resultTotalRowCount = undefined;
         }
         current.resultTotalRowCountLoading = current.mode === "query" && !!current.result && !!countSql;
+        // Server-side pagination without a countSql: the backend (currently
+        // the Elasticsearch driver) already reports the true match total via
+        // affected_rows. Use it directly so the result-grid can compute the
+        // page count without issuing a separate COUNT query.
+        if (
+          current.result &&
+          current.mode === "query" &&
+          typeof pageLimit === "number" &&
+          !countSql &&
+          typeof current.result.affected_rows === "number"
+        ) {
+          current.resultTotalRowCount = current.result.affected_rows;
+          current.resultTotalRowCountLoading = false;
+        }
         touchResult(current);
         if (current.mode === "query" && current.result) {
           countQueryTotalRowsInBackground({