🐛 fix(query-editor): 修复当前语句快捷选择在 CRLF 文本下错位

- 统一当前语句选择与执行路径的归一化 offset/position 换算
- 避免 Windows CRLF 文本下 SQL 语句选区错位
- 补充 QueryEditor 当前语句选择回归测试

Fixes #575

frontend/src/components/QueryEditor.external-sql-save.test.tsx

@@ -224,6 +224,9 @@ const editorState = vi.hoisted(() => {
     setSelection: vi.fn((selection: any) => {
       state.selection = selection;
     }),
+    setSelections: vi.fn((selections: any[]) => {
+      state.selection = Array.isArray(selections) ? selections[0] ?? null : null;
+    }),
     executeEdits: vi.fn((_source: string, edits: any[]) => {
       edits.forEach((edit) => {
         const start = offsetAt({ lineNumber: edit.range.startLineNumber, column: edit.range.startColumn });
@@ -2270,6 +2273,37 @@ describe('QueryEditor external SQL save', () => {
     expect(messageApi.info).not.toHaveBeenCalledWith('没有可选择的 SQL 语句。');
   });
 
+  it('selects only the current SQL statement when the editor content uses CRLF line endings', async () => {
+    storeState.shortcutOptions.selectCurrentStatement.windows = { enabled: true, combo: 'Ctrl+Q' };
+    const sql = [
+      'SELECT * FROM first_table;',
+      '',
+      'SELECT * FROM second_table;',
+      '',
+      'SELECT a.id, a.name FROM third_table a ORDER BY a.id;',
+    ].join('\r\n');
+    editorState.position = { lineNumber: 5, column: 18 };
+    editorState.selection = null;
+
+    await act(async () => {
+      create(<QueryEditor tab={createTab({ query: sql, readOnly: true })} />);
+    });
+
+    const selectCurrentStatementAction = findEditorAction('gonavi.selectCurrentStatement');
+    expect(selectCurrentStatementAction).toBeTruthy();
+
+    await act(async () => {
+      await selectCurrentStatementAction.run();
+    });
+
+    expect(editorState.selection).toMatchObject({
+      startLineNumber: 5,
+      startColumn: 1,
+      endLineNumber: 5,
+      endColumn: 'SELECT a.id, a.name FROM third_table a ORDER BY a.id;'.length,
+    });
+  });
+
   it('shows the object info miss toast in English when the cursor is not on a recognized table or column', async () => {
     storeState.languagePreference = 'en-US';
     setCurrentLanguage('en-US');

frontend/src/components/QueryEditor.tsx

@@ -85,6 +85,7 @@ import {
     dispatchQueryEditorSidebarLocate,
     getCaseInsensitiveValue,
     getFirstRowValue,
+    getNormalizedPositionAtOffset,
     getInitialEditorQuery,
     getMySQLShowTablesName,
     getNormalizedOffsetAtPosition,
@@ -752,16 +753,21 @@ const QueryEditor: React.FC<{ tab: TabData; isActive?: boolean }> = ({ tab, isAc
       }
 
       const fullSQL = String(model.getValue?.() || '');
-      const cursorOffset = model.getOffsetAt?.(position);
-      const range = resolveCurrentSqlStatementRange(fullSQL, Number(cursorOffset));
+      const normalizedPosition = normalizeEditorPosition(position);
+      if (!normalizedPosition) {
+          return;
+      }
+      const cursorOffset = getNormalizedOffsetAtPosition(fullSQL, normalizedPosition);
+      const range = resolveCurrentSqlStatementRange(fullSQL, cursorOffset);
       if (!range) {
           void message.info(translate('query_editor.message.no_selectable_sql'));
           return;
       }
 
-      const start = model.getPositionAt(range.start);
-      const end = model.getPositionAt(range.end);
+      const start = getNormalizedPositionAtOffset(fullSQL, range.start);
+      const end = getNormalizedPositionAtOffset(fullSQL, range.end);
       const selection = new monaco.Range(start.lineNumber, start.column, end.lineNumber, end.column);
+      editor.setSelections?.([selection]);
       editor.setSelection(selection);
       editor.revealRangeInCenterIfOutsideViewport?.(selection);
       editor.focus?.();

frontend/src/components/queryEditor/QueryEditorHelpers.ts

@@ -604,6 +604,20 @@ export const getNormalizedOffsetAtPosition = (
     return Math.max(0, Math.min(text.length, offset + Math.max(0, position.column - 1)));
 };
 
+export const getNormalizedPositionAtOffset = (
+    sqlText: string,
+    offset: number,
+): { lineNumber: number; column: number } => {
+    const text = String(sqlText || '').replace(/\r\n/g, '\n');
+    const safeOffset = Math.max(0, Math.min(text.length, Number.isFinite(offset) ? Math.trunc(offset) : 0));
+    const prefix = text.slice(0, safeOffset);
+    const lines = prefix.split('\n');
+    return {
+        lineNumber: Math.max(1, lines.length),
+        column: (lines[lines.length - 1]?.length || 0) + 1,
+    };
+};
+
 export const getFirstRowValue = (row: Record<string, any>): string => {
     for (const value of Object.values(row || {})) {
         if (value !== undefined && value !== null) {