✨ feat(vscode): 代码阅读预览标出新增 / 修改 / 删除的卡片（左侧改动色条、新增淡绿底挂小标、删掉的块原位收成一行可展开），筛选栏第二行写对比基准和改动统计，新文件顶部横幅

vscode/webview-ui/src/codeReader/viewState.ts

@@ -59,12 +59,12 @@ export function foldedByDefault(block: Pick<BlockView, 'kind' | 'badge'>): boole
   return block.badge !== undefined || ['function', 'class', 'enum', 'exception'].includes(block.kind)
 }
 
-/** 眼下折叠着的块、属性行和子行：用户点过的按他点的，没点过的按 foldedByDefault。 */
-export function collapsedIds(blocks: readonly BlockView[], folds: Readonly<Record<string, boolean>>): Set<string> {
+/** 眼下折叠着的块、属性行和子行：用户点过的按他点的，没点过的按 foldedByDefault；opened 里的块（标了改动的）默认展开。 */
+export function collapsedIds(blocks: readonly BlockView[], folds: Readonly<Record<string, boolean>>, opened: ReadonlySet<string> = new Set()): Set<string> {
   const collapsed = new Set(Object.keys(folds).filter(id => folds[id]))
   const visit = (list: readonly BlockView[]): void => {
     for (const block of list) {
-      if (folds[block.id] === undefined && foldedByDefault(block))
+      if (folds[block.id] === undefined && foldedByDefault(block) && !opened.has(block.id))
         collapsed.add(block.id)
       visit(block.children)
     }