✨ feat(vscode): 代码阅读的注释挂到它讲的代码块上成「注释」一行，重写注释改用技能一句话加结构化结果

- 普通注释不再单独成卡片：同一层挂到后面最近的块（隔空行也算），后面没有挂到前面那块，整层没代码挂到父块；只有文件开头隔着空行的注释、模块 docstring、//!、@file 单独成「文件开头的说明」
- 各语言（Python、TypeScript、Rust、Shell、Dockerfile）建好树后统一调 attachComments；块的编辑范围连着挂上的注释，差异、跳转、钉住卡片都按它
- 宿主统一给每张卡片（语言卡片、翻译插件的属性表、库规则卡片、一行译文的语句卡片）插「注释」一行，排在名称、说明后面
- TypeScript 的 JSDoc 也能当常量、变量的说明；sqlx、React 不再单独处理前面的注释
- 「重写注释」每块都有：提示只发 /ecc:writing-code-comments 路径:起-止，模型只读、按 --json-schema 交 body，没交结构化正文就失败不写；扩展换掉块前面的注释或在块上面新写一段

vscode/webview-ui/src/codeReader/BlockTree.tsx

@@ -1,4 +1,5 @@
 import type { CSSProperties, ReactElement, ReactNode } from 'react'
+import type { RewriteTool } from './BlockTools'
 import type { DiffTree, FoldedRuns, PlacedRemoved } from './diffView'
 import type { GridSlots } from './PropertyGrid'
 import type { QaState } from './qa'
@@ -8,7 +9,7 @@ import type { BlockMarks, BlockView } from './types'
 import { ChevronDown, ChevronRight, ChevronsUpDown, EyeOff } from 'lucide-react'
 import { Fragment, useState } from 'react'
 import { AskThread, RewriteThread } from './AskThread'
-import { BlockTools } from './BlockTools'
+import { BlockTools, RewriteButton } from './BlockTools'
 import { CodeEditor } from './CodeEditor'
 import { DiffText } from './DiffText'
 import { removedTitle } from './diffView'
@@ -202,11 +203,13 @@ function BlockRewrite({ anchor, edit }: { anchor: string, edit: EditTree }): Rea
 
 /**
  * 预览状态的内容：函数、类、枚举、导入、常量、变量块和库规则的卡片是属性表，其余是一行译文；
- * 译文下面依次接着摊开实参的表（跨几行写的调用）、说明。标差异时 marks 是这块自己的内容改了哪些（页面上正是差异算的那一版才给）。
+ * 译文下面依次接着摊开实参的表（跨几行写的调用）、说明、几行属性（「注释」一行）。标差异时 marks 是这块自己的内容改了哪些（页面上正是差异算的那一版才给）。
+ * rewrite 是「重写注释」按钮，画在「注释」一行上（commentRow）；只读的块树（定义卡片浮窗）、删掉的块没有。
  */
-function BlockPreview({ block, tree, marks }: { block: BlockView, tree: BlockTreeState, marks?: BlockMarks }): ReactElement {
+function BlockPreview({ block, tree, marks, rewrite }: { block: BlockView, tree: BlockTreeState, marks?: BlockMarks, rewrite?: RewriteTool }): ReactElement {
+  const rowTools = rewrite && block.commentRow !== undefined ? new Map([[block.commentRow, <RewriteButton key="rewrite" tool={rewrite} />]]) : undefined
   if ('properties' in block)
-    return <PropertyGrid blockId={block.id} rows={block.properties} collapsed={tree.collapsed} onToggleFold={tree.onToggleFold} marks={marks?.rows} slots={cardSlots(block, tree)} />
+    return <PropertyGrid blockId={block.id} rows={block.properties} collapsed={tree.collapsed} onToggleFold={tree.onToggleFold} marks={marks?.rows} slots={cardSlots(block, tree)} rowTools={rowTools} />
   return (
     <>
       {marks?.translation ? <DiffText diff={marks.translation} /> : <TextPreview text={block.translation} />}
@@ -216,10 +219,26 @@ function BlockPreview({ block, tree, marks }: { block: BlockView, tree: BlockTre
         </div>
       )}
       {marks?.doc ? <DiffText diff={marks.doc} className="mt-0.5" /> : block.doc && <TextPreview text={block.doc} className="mt-0.5" />}
+      {block.rows && (
+        <div className="mt-[3px]">
+          <PropertyGrid blockId={block.id} rows={block.rows} collapsed={tree.collapsed} onToggleFold={tree.onToggleFold} marks={marks?.rows} rowTools={rowTools} />
+        </div>
+      )}
     </>
   )
 }
 
+/** 这块的「重写注释」按钮：能写注释（commentTarget）、页面上能改代码时才有。 */
+function rewriteTool(block: BlockView, edit: EditTree | undefined): RewriteTool | undefined {
+  if (!edit || !block.commentTarget)
+    return undefined
+  return {
+    fresh: block.commentTarget.kind === 'insert',
+    rewriting: edit.rewrites.get(block.anchor)?.status === 'running',
+    onRewrite: () => edit.onRewriteComment(block.anchor),
+  }
+}
+
 /**
  * 挂在卡片子行上的子块（BlockSlot）怎么画：一行下面展开着的几块画成一层块（同块树）；点那个子行的第一格展开它、
  * 同一行里别的收起，展开着的再点收起。卡片没有挂在子行上的子块时没有。
@@ -252,6 +271,7 @@ function BlockCard({ block, tree }: { block: BlockView, tree: BlockTreeState }):
   const hasChildren = toggled || hasShownChildren(block, tree)
   const Chevron = collapsed && !toggled ? ChevronRight : ChevronDown
   const change = tree.diff?.changes.get(block.id)
+  const rewrite = rewriteTool(block, edit)
   return (
     <div
       className="cr-block relative flex items-start gap-2.5 rounded-lg py-2 pr-2.5 pl-2"
@@ -287,7 +307,7 @@ function BlockCard({ block, tree }: { block: BlockView, tree: BlockTreeState }):
                 onExit={() => edit.onToggleEdit(block.id)}
               />
             )
-          : <BlockPreview block={block} tree={tree} marks={tree.diff?.current ? change?.marks : undefined} />}
+          : <BlockPreview block={block} tree={tree} marks={tree.diff?.current ? change?.marks : undefined} rewrite={rewrite} />}
       </div>
       {tree.temporary.has(block.id) && (
         <span className="cr-temporary flex h-5 shrink-0 items-center gap-1 rounded px-1.5 text-[11px] whitespace-nowrap">
@@ -301,8 +321,7 @@ function BlockCard({ block, tree }: { block: BlockView, tree: BlockTreeState }):
           onToggleEdit={() => edit.onToggleEdit(block.id)}
           asking={tree.qa?.state.open.includes(block.anchor)}
           onToggleAsk={tree.qa && (() => tree.qa?.onToggle(block.anchor))}
-          rewriting={edit.rewrites.get(block.anchor)?.status === 'running'}
-          onRewrite={block.commentStartLine !== undefined ? () => edit.onRewriteComment(block.anchor) : undefined}
+          {...(rewrite && block.commentRow === undefined && { rewrite })}
         />
       )}
     </div>