✨ feat(vscode): 代码阅读的链式调用卡片：语言插件读链、翻译模板排成起点和步骤

契约加 LanguageAdapter.chain、Translator.chain、RuleContext.chain、PropertyRow.chain、TextTranslation.rows；跨行写或实参里有闭包的链排成卡片，连着同名调用合成一步列出每次实参，注释挂在步骤上，闭包收起、子块挂到那一步（BlockView.step）；Rust 插件读链、标准库常见方法写中文名；挤成一行时另起一行的 . 贴着前面

vscode/src/codeReader/editor/messages.ts

@@ -4,7 +4,7 @@
 
 import type { ClaudeImage } from '../../cc/spawnClaude'
 import type { FileAttribute } from '../attributes'
-import type { BlockSlot, CallTreeTarget, CommentTarget, SourceColors } from '../blockView'
+import type { BlockSlot, CallTreeTarget, ChainSlot, CommentTarget, SourceColors } from '../blockView'
 import type { ContractMiss } from '../callTree/endpoint'
 import type { CallTree } from '../callTree/model'
 import type { BlockAttributes, BlockConcept, KindBadge, Markdown, PreviewTable, PreviewText, PropertyItem, PropertyRow, SourceRange } from '../contract'
@@ -85,6 +85,7 @@ interface PageCardBase {
   commentTarget?: CommentTarget['kind']
   badge?: KindBadge
   slot?: BlockSlot
+  step?: ChainSlot
   callTree?: CallTreeTarget
 }
 

vscode/src/codeReader/editor/pageBlocks.test.ts

@@ -3,8 +3,10 @@ import type { PageBlock } from './messages'
 import { describe, expect, it } from 'vitest'
 import { toBlockViews } from '../blockView'
 import { createPythonAdapter } from '../languages/python'
+import { createRustAdapter } from '../languages/rust'
 import { WASM_DIR, withBlocks } from '../testSupport'
 import { pythonZhTranslator } from '../translators/pythonZh'
+import { rustZhTranslator } from '../translators/rustZh'
 import { pageBlocks } from './pageBlocks'
 
 const py = createPythonAdapter(WASM_DIR)
@@ -67,3 +69,22 @@ describe('发给页面的块带内容指纹：连子块、在源码里占的地
     expect(changed(before, hashes(await page(SOURCE.replace('os.getenv(key)', 'os.getenv(name)'))))).toEqual(['2', '2.0', '2.0.0', '2.0.0.0'])
   })
 })
+
+describe('链式调用卡片发给页面', () => {
+  const rust = createRustAdapter(WASM_DIR)
+
+  it('起点、各步的叫法和范围里的下标也从块的开头算，挂在链某一步下面的子块带着 step', async () => {
+    const source = 'fn f() {\n    rows.iter()\n        .for_each(|r| {\n            show(r);\n        });\n}\n'
+    const views = await withBlocks(rust, 'rust', source, blocks => toBlockViews(blocks, { source, language: rust, markers: [] }, rustZhTranslator))
+    const [fn] = pageBlocks(views, source)
+    const [statement] = fn?.children ?? []
+    const base = source.indexOf('    rows')
+    const rows = statement && 'translation' in statement ? statement.rows ?? [] : []
+    expect(rows[0]?.value).toEqual([{ text: 'rows', role: 'variable', offset: source.indexOf('rows') - base }])
+    const [, forEach] = rows[1]?.chain ?? []
+    const [label] = forEach?.name ?? []
+    expect(label && 'role' in label ? label.refers : undefined).toEqual({ startIndex: source.indexOf('for_each') - base, endIndex: source.indexOf('for_each') + 'for_each'.length - base })
+    expect(forEach?.range).toEqual({ startIndex: source.indexOf('.for_each') - base, endIndex: source.indexOf(';\n}') - base })
+    expect(statement?.children[0]?.step).toEqual({ row: 1, step: 1 })
+  })
+})

vscode/src/codeReader/editor/pageBlocks.ts

@@ -1,5 +1,5 @@
 import type { BlockView } from '../blockView'
-import type { Inline, PreviewTable, PreviewText, PropertyItem, PropertyRow, Segment, SourceRange } from '../contract'
+import type { ChainStep, Inline, PreviewTable, PreviewText, PropertyItem, PropertyRow, Segment, SourceRange } from '../contract'
 import type { BlockMarks, ItemDiff, ItemsDiff, RowDiff, RowsDiff, TextDiff } from '../diff/viewDiff'
 import type { BlockSpan, PageBlock, PageCard } from './messages'
 import { createHash } from 'node:crypto'
@@ -70,6 +70,19 @@ function shiftRow(row: PropertyRow, base: number): PropertyRow {
     value: shiftText(row.value, base),
     ...(row.defines && { defines: shiftRange(row.defines, base) }),
     ...(row.items && { items: row.items.map(item => shiftItem(item, base)) }),
+    ...(row.chain && { chain: row.chain.map(step => shiftStep(step, base)) }),
+  }
+}
+
+function shiftStep(step: ChainStep, base: number): ChainStep {
+  return {
+    ...step,
+    name: shiftInline(step.name, base),
+    value: shiftInline(step.value, base),
+    ...(step.lines && { lines: step.lines.map(line => shiftInline(line, base)) }),
+    ...(step.rows && { rows: step.rows.map(row => shiftRow(row, base)) }),
+    ...(step.table && { table: shiftTable(step.table, base) }),
+    range: shiftRange(step.range, base),
   }
 }
 
@@ -85,6 +98,7 @@ export function pageCard(block: BlockView, base: number): PageCard {
     ...(block.commentTarget && { commentTarget: block.commentTarget.kind }),
     ...(block.badge && { badge: block.badge }),
     ...(block.slot && { slot: block.slot }),
+    ...(block.step && { step: block.step }),
     ...(block.callTree && { callTree: block.callTree }),
   }
   if ('properties' in block)