feat(web): a prose mention of a produced file opens it

The chatFileMentions service (provided by ui-deliverables beside its
turn-tail entry, reached via ctx.get) resolves inline-code tokens in the
closing message against the turn's produced locations: exact path or
unique basename links, ambiguity and unknowns stay inert. MarkdownText
gains the optional fileMentions seam — settled renders only, never
inside anchors.

.agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.md
+2026-08-07-web-inline-file-mentions.md: 79c6bddd500dc0b68bf64f3c4bea114ca41b4b62
+2026-08-07-web-inline-file-mentions.zh.md: ddc54d3b43570b19fb23c1c9c8079ef4ca65f8fa

.agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.md

@@ -0,0 +1,28 @@
+# Agent Note: inline-code file mentions open the file they name
+
+Status: implemented
+
+English | [中文](2026-08-07-web-inline-file-mentions.zh.md)
+
+> Scope: linking inline-code tokens in the closing message's prose to the files the turn produced. Not in scope: recognizing paths in plain prose, linking files the turn did not produce, and mentions in streaming or mid-turn messages.
+
+## Problem
+
+The produced-files row lists a turn's output, but the closing message usually also *names* the file in prose — as inline code, like `` `deepseek-homepage.html` `` — and that mention was inert text. The reader's eye lands on the sentence first; the affordance sat one row below it.
+
+## Decision
+
+**A prose mention links only when it matches a produced file.** The [produced-files decision](2026-07-31-web-workspace-file-links.md) rejected linkifying the closing message because rendering must not depend on the model spelling a path recognizably; that holds. The row remains the authoritative, prose-independent account. This feature adds a second consumer of the same `locations` vocabulary: `producedFileMentions` resolves an inline-code token by exact path, or by being exactly the basename of exactly one produced path. A basename two paths share stays inert rather than guessing, and a token naming nothing the turn wrote stays inert — a mention link can never 404.
+
+**The renderer owns no vocabulary, and the provider is the deliverables plugin.** `MarkdownText` takes an optional `MarkdownFileMentions` resolver and consults it for inline-code tokens — after URL promotion, which wins, and never inside an anchor, where a button cannot nest. What names a file is decided behind the optional `chatFileMentions` service ui-conversation reaches via `ctx.get`: ui-deliverables provides it beside its turn-tail chain entry, so one cordis.yml line composes the row and the prose links in or out together, and ui-primitives gains no session concepts. Mentions apply to settled renders only — the streaming cache must not bake in handlers that could go stale, and the vocabulary is not final until the turn closes. The consumer memoizes the resolver on the closing seq rather than the growing transcript, so a settled message's cached parse survives stream appends.
+
+## Alternatives considered
+
+- **Path-shaped regex over all prose** — links `package.json` mentioned abstractly and examples that were never written; every false positive is a click that opens nothing or the wrong file. The vocabulary approach cannot produce a dead link.
+- **Linking suffix matches (`out/index.html` mentioned as `index.html` in a subdirectory listing)** — deferred; exact path and unique basename cover the observed closing-message shapes, and a wider matcher can loosen later without breaking the seam.
+- **Resolving in ui-primitives against a passed path list** — puts matching policy in the generic renderer, where other consumers would inherit it unasked. The resolver seam keeps policy with the owner.
+- **Threading the vocabulary through the turn-tail chain** — the chain is a render dispatch below the message; mentions decorate markdown inside it, which only data reaching MarkdownText can do. The optional service is that data path, and its absence is the off state.
+
+## Consequences
+
+The mention and the row are two affordances for one fact, styled alike (underlined at rest, full path as `title`). `apps/web/tests/produced-file-mentions.e2e.ts` pins the assembled behavior with a built write-turn seed: unique basename links, ambiguous and unknown tokens stay inert; it does not click, for the produced-files restraint (the opener launches a real application). Mentions in mid-turn narration stay inert even for files the turn later produces, because the vocabulary attaches to the closing message only. The window-prepend edge — a window that starts mid-turn later gaining earlier same-turn writes — leaves a mention unlinked until remount, never wrongly linked.

.agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.zh.md

@@ -0,0 +1,28 @@
+# Agent Note：行内代码文件提及可打开其命名的文件
+
+Status: implemented
+
+[English](2026-08-07-web-inline-file-mentions.md) | 中文
+
+> 范围：把收尾消息正文中的行内代码 token 链接到本轮产出的文件。不在范围内：识别普通正文中的路径、链接本轮未产出的文件，以及流式或轮次中途消息里的提及。
+
+## 问题
+
+产物行列出了一轮的输出，但收尾消息通常也会在正文里*点名*文件——以行内代码形式，如 `` `deepseek-homepage.html` ``——而这个提及是死文本。读者的视线先落在句子上；可点击的交互却在下面一行。
+
+## 决定
+
+**正文提及只在与产出文件对得上时才成为链接。**[产物行的决定](2026-07-31-web-workspace-file-links.md)否决过"把收尾消息链接化"，理由是渲染不能依赖模型把路径写得可识别；这一点不变。产物行仍是权威的、不依赖正文的记录。本特性只是给同一份 `locations` 词表增加第二个消费者：`producedFileMentions` 按精确路径解析行内代码 token，或当 token 恰好是且仅是一条产出路径的 basename 时解析。两条路径共享的 basename 保持死文本而不猜测，命名了本轮没写过的文件的 token 同样保持死文本——提及链接永远不会 404。
+
+**渲染器不持有词表，提供方是 deliverables 插件。**`MarkdownText` 接受可选的 `MarkdownFileMentions` 解析器，对行内代码 token 询问它——URL 提升优先于解析器，且绝不在锚点内部（按钮不能嵌套在链接里）。什么算文件名的决定藏在 ui-conversation 经 `ctx.get` 触达的可选 `chatFileMentions` service 背后：ui-deliverables 在其 turn-tail chain 注册项旁提供该 service，因此 cordis.yml 中的一行同时把产物行和正文链接组合进来或去掉，ui-primitives 不引入任何会话概念。提及只作用于已定稿的渲染——流式缓存不能烘进可能过期的 handler，而且词表在轮次收尾前并不最终。消费方按收尾 seq 而非不断增长的 transcript 记忆化解析器，因此已定稿消息的缓存解析在流式追加中得以保留。
+
+## 考虑过的替代方案
+
+- **对全部正文跑路径形状的正则**——会把随口提到的 `package.json` 和从未写过的示例都链接上；每个误报都是一次打开空无或错误文件的点击。词表方案不可能产生死链。
+- **链接后缀匹配（子目录列表里把 `out/index.html` 写作 `index.html`）**——暂缓；精确路径加唯一 basename 已覆盖观察到的收尾消息形态，之后放宽匹配器不会破坏这道 seam。
+- **在 ui-primitives 里对传入的路径列表做解析**——把匹配策略放进通用渲染器，其他消费方会被动继承。解析器 seam 让策略留在持有者手里。
+- **经由 turn-tail chain 传递词表**——chain 是消息下方的渲染派发；提及要装饰的是消息内部的 markdown，只有抵达 MarkdownText 的数据才做得到。可选 service 就是那条数据通路，它的缺席即关闭态。
+
+## 后果
+
+提及与产物行是同一事实的两个交互面，样式一致（静止即下划线，完整路径作为 `title`）。`apps/web/tests/produced-file-mentions.e2e.ts` 用构造的写入轮 seed 钉住组装后的行为：唯一 basename 成链，歧义与未知 token 保持死文本；它不驱动点击，沿用产物行的克制（opener 会启动真实应用）。轮次中途叙述里的提及即使命名了本轮后来产出的文件也保持死文本，因为词表只挂在收尾消息上。窗口前插的边界——从轮次中途开始的窗口后来补入了同轮更早的写入——只会让提及在重挂载前暂不成链，绝不会错链。

apps/web/tests/produced-file-mentions.e2e.ts

@@ -0,0 +1,162 @@
+// Web e2e scenario: inline-code file mentions in the closing prose. Cold-seeds
+// a built write turn (zero model calls) whose closing message names the written
+// file three ways: by unique basename (links), ambiguously (stays inert), and
+// as a file the turn never touched (stays inert). Package tests cover the
+// resolver in isolation; only the assembled application shows a real write's
+// locations reaching the prose as an opener. The click itself is not driven
+// here: it hands the path to the Host's opener, which would launch a real
+// application on the machine running the suite (the produced-files restraint).
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { CallId, createAssistantMessage, createToolResultMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-session-title'
+import {
+  launchWebScaffold, seedSession, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { newEnglishPage, saveFailureShot } from './support.ts'
+
+const MODE = webSnapshotMode()
+const SEED_ID = 'produced-file-mentions-web-e2e'
+const DONE = 'FILE_MENTION_DONE'
+
+/** One-part text content for a built message. */
+function text(value: string): { type: 'text'; text: string }[] {
+  return [{ type: 'text', text: value }]
+}
+
+/** The files the built turn writes; `notes.md` is named in prose but never written. */
+const WRITES = ['site/report.html', 'a/style.css', 'b/style.css']
+
+/** Build a settled write turn whose closing prose mentions files in inline code. */
+function mentionFixture(): string {
+  const session = Session.create(SessionId('produced-file-mentions-source'))
+  const eventTimeOrigin = new Date().setHours(12, 0, 0, 0)
+  session.append('turn/start', { turn: 1 })
+  const user = session.append('user/message', createUserMessage({
+    content: [{ type: 'text', text: 'Write the report page and both stylesheets.' }],
+    source: { kind: 'user' },
+  }), { surfaceOp: 'append' })
+  session.append('session/title', {
+    title: 'Produced file mentions',
+    messageSeqs: [user.seq],
+    source: { kind: 'fallback' },
+  })
+  session.append('step/start', { turn: 1, step: 1 })
+  const calls = WRITES.map((path, index) => ({
+    path,
+    callId: CallId(`file-mention-${String(index)}`),
+    args: JSON.stringify({ file_path: path, content: `content of ${path}\n` }),
+  }))
+  session.append('assistant/message', {
+    turn: 1,
+    step: 1,
+    message: createAssistantMessage({
+      content: calls.map(call => ({
+        type: 'tool-call' as const,
+        id: call.callId,
+        name: 'write',
+        arguments: call.args,
+      })),
+      source: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+    }),
+  }, { surfaceOp: 'append' })
+  for (const call of calls) {
+    const source = session.append('tool/call', {
+      turn: 1,
+      step: 1,
+      callId: call.callId,
+      name: 'write',
+      arguments: call.args,
+    })
+    session.append('tool/result', {
+      turn: 1,
+      step: 1,
+      message: createToolResultMessage({
+        callId: call.callId,
+        content: text(`Created ${call.path}`),
+        isError: false,
+      }),
+    }, { surfaceOp: 'append', sourceEventSeqs: [source.seq] })
+  }
+  session.append('step/start', { turn: 1, step: 2 })
+  session.append('assistant/message', {
+    turn: 1,
+    step: 2,
+    message: createAssistantMessage({
+      content: [{
+        type: 'text',
+        text: [
+          'Wrote `report.html` plus two `style.css` copies; `notes.md` untouched.',
+          '',
+          DONE,
+        ].join('\n'),
+      }],
+      source: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+    }),
+  }, { surfaceOp: 'append' })
+  session.append('step/end', { turn: 1, step: 2 })
+  session.append('turn/end', { turn: 1, reason: { kind: 'completed' } })
+
+  return [
+    JSON.stringify({
+      type: 'session',
+      version: SESSION_FORMAT_VERSION,
+      id: '{{sessionId}}',
+      createdAt: 0,
+      cwd: '{{cwd}}',
+    }),
+    ...session.events.map(event => JSON.stringify({
+      ...event,
+      time: eventTimeOrigin + event.seq * 1_000,
+    })),
+    '',
+  ].join('\n')
+}
+
+describe('web e2e: inline-code mentions of produced files', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    await seedSession(scaffold, mentionFixture(), SEED_ID)
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it.skipIf(MODE === 'record')('links the unique mention and leaves ambiguous and unknown code inert', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-produced-file-mentions'))
+    const groupRow = page.locator('[role="treeitem"]').first()
+    await groupRow.waitFor({ timeout: 15_000 })
+    await groupRow.click()
+    const sessionRow = page.locator('[role="treeitem"]').nth(1)
+    await sessionRow.waitFor({ timeout: 10_000 })
+    await sessionRow.click()
+    await expect.poll(() => page.getByText(DONE, { exact: true }).count(), { timeout: 15_000 }).toBe(1)
+
+    // Exactly one prose mention links: `report.html` resolves to the written
+    // path; the shared `style.css` basename and unwritten `notes.md` stay code.
+    const mentions = page.locator('[class*="markdown"] code button')
+    await expect.poll(() => mentions.count(), { timeout: 10_000 }).toBe(1)
+    expect(await mentions.first().innerText()).toBe('report.html')
+    expect(await mentions.first().getAttribute('aria-label')).toBe('Open site/report.html')
+    expect(await mentions.first().getAttribute('title')).toBe('site/report.html')
+    // The turn still ends with its produced-files row (all three writes).
+    expect(await page.getByText('Produced', { exact: true }).count()).toBe(1)
+
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 90_000)
+})

apps/web/tsconfig.json

@@ -61,6 +61,7 @@
     "tests/shipped-composition.e2e.ts",
     "tests/startup-auto-selection.e2e.ts",
     "tests/produced-files.e2e.ts",
+    "tests/produced-file-mentions.e2e.ts",
     "tests/goal-bar.e2e.ts",
     "tests/subagent-conversation.e2e.ts",
     "tests/bash-abort-row.e2e.ts",

packages/client/ui-conversation/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-conversation/README.md
-README.md: d708621dbeb99615b0864e6977c8d2f387ae5265
-README.zh.md: e2cf9c3b32c86c2da39f09e4804c2ac69a3569f7
+README.md: 6182fa1281eec50f8898634cb466291b6ef1f5ff
+README.zh.md: 8b110ec7713dcda5972d0ea0d9a8042301906d99

packages/client/ui-conversation/README.md

@@ -50,7 +50,7 @@ The chat stats line takes its token accounting from the generic token-meter `tok
 
 `src/client/` is organized by domain. `contract/` is the sole inter-domain shared face (`slots.ts` slot declarations and composed props, `views.ts` shared primitives, `tool-call-model.ts`); the `skeleton/`, `chat/`, and `toolviews/` directories import contract files and never each other. `apply.ts` is the only assembly point allowed to import all three domains. The `/client` export surface is the contract only — `apply`/`inject`, the two service classes, and the `contract/` type families; implementation components and the store factory stay internal and reach the page through apply's slot registrations.
 
-A finished turn ends with a turn-tail hole: the chat view renders the `conversation.chat.turnTail` list slot between the closing assistant's body and its IconActions, once per turn at the seq `assistantActionsSeqs` elects, dispatching `TurnTailOwnerProps` (the snapshot nodes, the closing seq, and the tool rows' `openFile`). This package owns only the hole; the produced-files row that fills it — derivation from the mutation tools' `locations`, the chip cap, the copy — lives in `@deepseek-ai/dsh-client-ui-deliverables`, so composing that plugin out of cordis.yml turns the surface off while the hole renders empty at zero cost.
+A finished turn ends with a turn-tail hole: the chat view renders the `conversation.chat.turnTail` list slot between the closing assistant's body and its IconActions, once per turn at the seq `assistantActionsSeqs` elects, dispatching `TurnTailOwnerProps` (the snapshot nodes, the closing seq, and the tool rows' `openFile`). This package owns only the hole; the produced-files row that fills it — derivation from the mutation tools' `locations`, the chip cap, the copy — lives in `@deepseek-ai/dsh-client-ui-deliverables`, so composing that plugin out of cordis.yml turns the surface off while the hole renders empty at zero cost. The closing prose participates through the same off switch: the chat view asks the optional `chatFileMentions` service (ctx.get; provided by the same plugin) for a closing message's inline-code vocabulary and threads the result into MarkdownText's `fileMentions` seam — an absent service leaves the prose inert.
 
 ## Model Experience
 

packages/client/ui-conversation/README.zh.md

@@ -50,7 +50,7 @@ Host 带 placement 的 `session/queue` 快照也会携带待处理 steering。Qu
 
 `src/client/` 按领域组织。`contract/` 是唯一的跨领域共享表层（`slots.ts` slot 声明与组合后的 props、`views.ts` 共享原语、`tool-call-model.ts`）；`skeleton/`、`chat/` 和 `toolviews/` 目录只导入 contract 文件，彼此之间从不互相导入。`apply.ts` 是唯一允许导入全部三个领域的组装点。`/client` 导出表层只包含契约：`apply`／`inject`、两个服务类和 `contract/` 类型家族；实现组件与 store factory 保持内部，经 apply 的 slot 注册抵达页面。
 
-完成的一轮以一个 turn-tail 空位收尾：chat 视图在收尾 assistant 正文与其 IconActions 之间渲染 `conversation.chat.turnTail` list slot，每轮一次、位于 `assistantActionsSeqs` 选出的 seq，派发 `TurnTailOwnerProps`（快照节点、收尾 seq，以及工具行的 `openFile`）。本包只拥有空位；填充它的产物行——从改写工具 `locations` 的派生、chip 上限、文案——都在 `@deepseek-ai/dsh-client-ui-deliverables` 里，因此把那个插件从 cordis.yml 中组合掉即可关闭该交互面，空位以零成本渲染为空。
+完成的一轮以一个 turn-tail 空位收尾：chat 视图在收尾 assistant 正文与其 IconActions 之间渲染 `conversation.chat.turnTail` list slot，每轮一次、位于 `assistantActionsSeqs` 选出的 seq，派发 `TurnTailOwnerProps`（快照节点、收尾 seq，以及工具行的 `openFile`）。本包只拥有空位；填充它的产物行——从改写工具 `locations` 的派生、chip 上限、文案——都在 `@deepseek-ai/dsh-client-ui-deliverables` 里，因此把那个插件从 cordis.yml 中组合掉即可关闭该交互面，空位以零成本渲染为空。收尾正文经由同一个开关参与其中：chat 视图向可选的 `chatFileMentions` service（ctx.get；由同一插件提供）索取收尾消息的行内代码词表，并把结果接进 MarkdownText 的 `fileMentions` seam——service 缺席时正文保持死文本。
 
 ## 模型体验
 

packages/client/ui-conversation/src/client/apply.ts

@@ -313,6 +313,7 @@ export function apply(ctx: Context): void {
           actions.select(target)
           layout.openDetails()
         },
+        fileMentions: owner => ctx.get('chatFileMentions')?.forClosing(owner),
         openFile: (path) => {
           const cwd = sessions.list.getSnapshot().byId[sessionId]?.cwd
           void workspaces.openPath(resolveToolPath(cwd, path)).catch(() => {

packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx

@@ -15,7 +15,8 @@ import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import {
   IconThinkOutline14, JsonBlock, MarkdownText,
 } from '@deepseek-ai/dsh-client-ui-primitives'
-import type { ChatViewSlotProps, TurnTailOwnerProps } from '../contract/slots.ts'
+import type { MarkdownFileMentions } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ChatViewSlotProps, ChatViewInjected, TurnTailOwnerProps } from '../contract/slots.ts'
 import { hasContentText } from './chat-flow.ts'
 import { MessageIconActions } from './MessageIconActions.tsx'
 import { ToolRow } from './ToolRow.tsx'
@@ -43,6 +44,8 @@ export interface AssistantMarkdownProps {
   onFork?: ((seq: number) => void) | undefined
   /** Turn-tail slot dispatch share and owner currency; omitted for a mid-turn assistant. */
   turnTail?: (Pick<PropsRenderSlots<'conversation.chat.turnTail'>, 'renderSlotChain'> & { owner: TurnTailOwnerProps }) | undefined
+  /** Prose file-mention factory (the injected face); omitted wherever `turnTail` is. */
+  fileMentions?: ChatViewInjected['fileMentions'] | undefined
   /** The message is not the transcript tail of a completed turn. */
   forkUnavailable?: boolean | undefined
   /** The owning view's locale seat, passed down as a plain prop. */
@@ -86,11 +89,25 @@ function ThinkRow({ text, running, t }: { text: string; running: boolean; t: Ass
 }
 
 export const AssistantMarkdown = memo(function AssistantMarkdown({
-  blocks, streaming, interrupted, time, runMs, ttftMs, tokensPerSecond, seq, onFork, forkUnavailable, turnTail, t,
+  blocks, streaming, interrupted, time, runMs, ttftMs, tokensPerSecond, seq, onFork, forkUnavailable, turnTail,
+  fileMentions, t,
 }: AssistantMarkdownProps) {
   // Stable per locale revision (t identity changes on switch): a fresh object
   // per render would rebuild MarkdownText's component table every chunk.
   const codeLabels = useMemo(() => ({ copyLabel: t('copy'), copiedLabel: t('copied') }), [t])
+  // Mention vocabulary for the closing prose. Keyed on the anchor seq, not the
+  // growing transcript: a settled turn's produced files are final, and a
+  // fresh identity per append would discard MarkdownText's cached parse for
+  // every settled closing message on every stream chunk. The window-prepend
+  // edge (a mid-turn window start later gaining earlier same-turn writes)
+  // leaves a mention unlinked until remount — never a wrong link.
+  const owner = turnTail?.owner
+  const mentions: MarkdownFileMentions | undefined = useMemo(
+    () => (owner === undefined ? undefined : fileMentions?.(owner)),
+    // Deliberately not `owner`: its identity changes per append while the
+    // seq-addressed vocabulary it yields does not.
+    [fileMentions, owner?.seq],
+  )
   const last = blocks.length - 1
   // Tool-call heads render as tool rows in the chat view's grouping pass, so
   // a node that is only those heads (or empty) would paint an empty root
@@ -107,7 +124,13 @@ export const AssistantMarkdown = memo(function AssistantMarkdown({
         {blocks.map((block, i) => {
           switch (block.kind) {
             case 'text': return (
-              <MarkdownText key={i} text={block.text} streaming={streaming} codeLabels={codeLabels} />
+              <MarkdownText
+                key={i}
+                text={block.text}
+                streaming={streaming}
+                codeLabels={codeLabels}
+                fileMentions={mentions}
+              />
             )
             case 'reasoning': return <ThinkRow key={i} text={block.text} running={streaming && i === last} t={t} />
             // Grouped into tool rows by ChatView; hasVisible above skips an empty shell.

packages/client/ui-conversation/src/client/chat/ChatView.tsx

@@ -335,7 +335,8 @@ function StreamingTail({ useSession, t }: {
  * render through the declared keyed hole's renderSlot share).
  */
 export function ChatView({
-  useSession, useSessions, useStore, renderSlot, renderSlotChain, sessionId, openFile, loadOlder, inspectCall, chatScroll, forkAt, t,
+  useSession, useSessions, useStore, renderSlot, renderSlotChain, sessionId, openFile, loadOlder, inspectCall, chatScroll, forkAt,
+  fileMentions, t,
 }: ChatViewSlotProps) {
   const nodes = useSession(s => s.nodes)
   const turnTimings = useSession(s => s.turnTimings)
@@ -603,6 +604,7 @@ export function ChatView({
           turnTail={actionSeqs.has(node.seq)
             ? { renderSlotChain, owner: { nodes, seq: node.seq, openFile } }
             : undefined}
+          fileMentions={actionSeqs.has(node.seq) ? fileMentions : undefined}
           t={t}
         />
       )

packages/client/ui-conversation/src/client/contract/slots.ts

@@ -4,6 +4,7 @@ import type {
   InjectFace, MaybeSnapshotSelectorHook, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore, SnapshotSelectorHook,
 } from '@deepseek-ai/dsh-client-ui-slots'
 import type { CommandNode, ConversationNode, ConversationSnapshot, ObservableSnapshot, PendingInteraction, PendingWait, SessionId, ToolCallBlock, WorkspaceId } from '@deepseek-ai/dsh-client-runtime/client'
+import type { MarkdownFileMentions } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {} from '@deepseek-ai/dsh-client-ui-layout/client'
 import type { ComposerKeyboard, EditSelection, InputActions, InputNotice, InputState } from '../input/contract.ts'
 import type { createChatStore } from '../stores.ts'
@@ -158,6 +159,30 @@ export interface ConvViewOwnerProps {
   onInspectDone?: () => void
 }
 
+/**
+ * Optional prose file-mention provider, consumed via `ctx.get('chatFileMentions')`
+ * (optional-service convention): the chat view asks it for a closing message's
+ * inline-code vocabulary and threads the result into MarkdownText. Absent
+ * service — the providing plugin composed out of cordis.yml — turns the
+ * surface off; the prose renders inert code.
+ */
+export interface ChatFileMentions {
+  /**
+   * Mention vocabulary for the closing message the owner currency names.
+   * @param owner - Turn-tail owner currency (nodes, closing seq, opener).
+   * @returns The resolver MarkdownText consumes, or undefined when the turn
+   * produced nothing worth linking.
+   */
+  forClosing(owner: TurnTailOwnerProps): MarkdownFileMentions | undefined
+}
+
+declare module 'cordis' {
+  interface Context {
+    /** Prose file-mention provider (ui-deliverables); reach via ctx.get — optional. */
+    chatFileMentions: ChatFileMentions
+  }
+}
+
 /**
  * Owner currency of the chat view's turn-tail hole: the finalized snapshot
  * and the closing assistant's anchor. Registrants derive their own facts
@@ -502,6 +527,13 @@ export interface ChatViewInjected {
   }
   /** Fork through the completed turn ending at the eligible message `seq`, then open the child. */
   forkAt: (seq: number) => void
+  /**
+   * Prose file-mention vocabulary for one closing message, from the optional
+   * {@link ChatFileMentions} service (resolved lazily per call, so composing
+   * the provider in or out takes effect live). Undefined when the service is
+   * absent or the turn produced nothing worth linking.
+   */
+  fileMentions: (owner: TurnTailOwnerProps) => MarkdownFileMentions | undefined
 }
 
 /** Full chat-view component props: runtime & the declared toolview/commandview holes' render share & store & injected & locale seat. */

packages/client/ui-conversation/src/client/index.ts

@@ -13,6 +13,7 @@ export type {
 export type { ToolCallBlock } from './contract/tool-call-model.ts'
 export type { ConversationKey } from './locales.ts'
 export type {
+  ChatFileMentions,
   ChatStore, ChatViewInjected, ChatViewSlotProps, CommandRowOwnerProps, CommandRowProps, ComposerBarInjected,
   ComposerChainProps, ConversationInjected,
   ConversationSessionHeaderInjected, ConversationSessionInjected, ConversationSlotProps,

packages/client/ui-conversation/tests/chat-view.spec.tsx

@@ -154,6 +154,8 @@ function makeHarness(init?: Partial<ConversationSnapshot>) {
     inspectCall,
     chatScroll,
     forkAt,
+    // Absent-service default; mention tests override with a real resolver.
+    fileMentions: () => undefined,
     // Mirrors the real lookup chain (conversation namespace, then common).
     t: makeTranslate(zh, commonZh),
   }
@@ -248,6 +250,45 @@ describe('chat-flow derivation', () => {
     expect([...assistantActionsSeqs(nodes, new Map([[1, 5]]))]).toEqual([5])
   })
 
+  it('threads the injected file-mention vocabulary into the closing prose only', () => {
+    const wrote = (seq: number, callId: string, path: string): ToolResultNode => ({
+      ...toolResult(seq, callId, 'write'),
+      callView: {
+        card: 'diff', title: 'Write', diffs: [{ path, oldText: null, newText: 'x' }], locations: [{ path }],
+      },
+    })
+    const h = makeHarness({
+      nodes: [
+        user(1, 'build it'),
+        assistant(2, 'writing `report.html` now', 1),
+        wrote(3, 'w', 'site/report.html'),
+        assistant(4, 'Wrote `report.html`; `notes.md` untouched.', 1),
+      ],
+      turnEnds: new Map([[1, 4]]),
+    })
+    // Stub provider mirroring the real service: only produced files resolve.
+    h.props.fileMentions = owner => ({
+      resolve: (value) => {
+        if (value !== 'report.html') return undefined
+        return {
+          open: () => { h.openFile(`for-seq-${String(owner.seq)}/site/report.html`) },
+          label: '打开 site/report.html',
+          title: 'site/report.html',
+        }
+      },
+    })
+    const view = render(<h.ChatView {...h.props} />)
+    // Exactly one live mention: the closing message links, the mid-turn
+    // narration stays inert code, and the unknown file resolves to nothing.
+    const mentions = view.container.querySelectorAll('code button')
+    expect(mentions).toHaveLength(1)
+    const mention = view.getByRole('button', { name: '打开 site/report.html' })
+    expect(mention.getAttribute('title')).toBe('site/report.html')
+    fireEvent.click(mention)
+    // The vocabulary was built from the closing message's own owner currency.
+    expect(h.openFile).toHaveBeenCalledWith('for-seq-4/site/report.html')
+  })
+
   it('runningTurnStartTime selects the latest turn/start without a turn/end', () => {
     expect(runningTurnStartTime(new Map([
       [1, { startTime: 1_000, endTime: 5_000 }],

packages/client/ui-deliverables/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-deliverables/README.md
-README.md: b8b0ea2ef1cbc9b18b905fc08b41278f403ef043
-README.zh.md: a16535b8a8d3625ca1cf90e88c6d9dca742d916b
+README.md: d6695f155907e7d92b35556588687b3f95e55b88
+README.zh.md: be360a5a1fbe8d904cedf104b28f64f1b0567d6b

packages/client/ui-deliverables/README.md

@@ -8,6 +8,8 @@ Produced-files feature owner: registers the deliverables row a finished turn end
 
 `ProducedFiles` renders the row between the closing message's body and its IconActions footer: a quiet label, up to six chips (basename text, full path as the `title`), and an explicit remainder count past the cap. Each chip opens through the owner-supplied `openFile` — the same Host opener the tool rows use, with the chat view resolving relative paths against the session cwd. Design rationale: the [workspace file links Agent Note](../../../.agents/notes/implemented/feature/2026-07-31-web-workspace-file-links.md).
 
+The closing prose carries the same vocabulary. This plugin provides the `chatFileMentions` service the chat view consults per closing message: `producedFileMentions` resolves an inline-code token by exact path, or by being exactly the basename of exactly one produced path — a basename two paths share stays inert rather than guessing, so a mention link can never open the wrong file or 404. A resolved mention renders as the same underlined opener the row's chips are, with the full path as its `title`, and mentions never render inside anchors or streaming text. Decision record: the [inline file mentions Agent Note](../../../.agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.md).
+
 ## Model Experience
 
 None, as the row is a pure client derivation over already-logged tool metadata and nothing here reaches a model request.
@@ -18,4 +20,4 @@ None; this package neither assembles nor sends provider requests.
 
 ## Known Limitations and Deferred Work
 
-- **Prose mentions stay inert.** An inline-code file name in the closing message does not open the file yet; linking it to the same `locations` vocabulary is the stacked follow-up.
+- **Mention matching is exact path or unique basename only.** A suffix mention (`out/index.html` written as `index.html` resolves; `deep/out/index.html` written as `out/index.html` does not) stays inert; widening the matcher is deferred until a real closing-message shape needs it.

packages/client/ui-deliverables/README.zh.md

@@ -8,6 +8,8 @@
 
 `ProducedFiles` 在收尾消息正文与其 IconActions 之间渲染该行：一个安静的标签、至多六枚 chip（文本为文件名，完整路径作为 `title`），超出上限则显示一个明确的剩余计数。每枚 chip 经由 owner 提供的 `openFile` 打开——与工具行相同的 Host 打开器，chat 视图会把相对路径按会话 cwd 解析。设计原理：[workspace 文件链接 Agent Note](../../../.agents/notes/implemented/feature/2026-07-31-web-workspace-file-links.md)。
 
+收尾正文承载同一份词表。本插件提供 chat 视图按收尾消息查询的 `chatFileMentions` service：`producedFileMentions` 按精确路径解析行内代码 token，或当 token 恰好是且仅是一条产出路径的 basename 时解析——两条路径共享的 basename 保持死文本而不猜测，因此提及链接永远不会打开错误的文件或 404。解析成功的提及渲染为与产物行 chip 相同的下划线 opener，完整路径作为其 `title`；提及绝不会渲染在锚点内部或流式文本里。决策记录：[行内文件提及 Agent Note](../../../.agents/notes/implemented/feature/2026-08-07-web-inline-file-mentions.md)。
+
 ## 模型体验
 
 无。该行是对已记录工具元数据的纯客户端派生，这里没有任何内容进入模型请求。
@@ -18,4 +20,4 @@
 
 ## 已知限制与暂缓事项
 
-- **正文提及仍是死文本。**收尾消息里以行内代码写出的文件名尚不能点击打开；把它接到同一份 `locations` 词表是 stacked 的后续工作。
+- **提及匹配只认精确路径或唯一 basename。**后缀式提及（`out/index.html` 写作 `index.html` 可解析；`deep/out/index.html` 写作 `out/index.html` 则不行）保持死文本；放宽匹配器等真实的收尾消息形态需要时再做。

packages/client/ui-deliverables/src/client/ProducedFiles.tsx

@@ -6,18 +6,13 @@
 
 import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
 import type { TurnTailOwnerProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { basename } from './turn-deliverables.ts'
 import type { NS } from './locales.ts'
 import css from './ProducedFiles.module.css'
 
 /** Files past this stay counted but unlisted: a refactor turn must not bury the answer. */
 const SHOWN = 6
 
-/** Trailing path segment, the part that identifies the file at a glance. */
-function basename(path: string): string {
-  const at = Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\'))
-  return at === -1 ? path : path.slice(at + 1)
-}
-
 /** Matched paths plus the opener and locale seats needed to present them. */
 export type ProducedFilesProps = Pick<TurnTailOwnerProps, 'openFile'> & {
   matched: readonly string[]

packages/client/ui-deliverables/src/client/index.ts

@@ -1,16 +1,18 @@
 /**
  * Deliverables plugin, browser half: registers the produced-files row into
- * the chat view's turn-tail hole. All policy lives here — the derivation
- * from the mutation tools' `locations`, the chip cap, and the copy — so
- * composing this plugin out of cordis.yml removes the surface entirely; the
- * owning view renders an empty hole at zero cost.
+ * the chat view's turn-tail chain, and provides the `chatFileMentions`
+ * service that links inline-code mentions of produced files in the closing
+ * prose. All policy lives here — the derivation from the mutation tools'
+ * `locations`, the mention matching, the chip cap, and the copy — so
+ * composing this plugin out of cordis.yml removes both surfaces entirely;
+ * the owning view renders an empty chain and inert prose at zero cost.
  */
 import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
-import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type { ChatFileMentions } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type {} from '@deepseek-ai/dsh-client-locale/client'
 import { ProducedFiles } from './ProducedFiles.tsx'
 import { en, NS, zh, type DeliverablesKey } from './locales.ts'
-import { selectProducedFiles } from './turn-deliverables.ts'
+import { producedFileMentions, producedForClosing, selectProducedFiles } from './turn-deliverables.ts'
 
 declare module '@deepseek-ai/dsh-client-ui-slots' {
   interface LocaleNamespaceMap {
@@ -39,4 +41,15 @@ export function apply(ctx: ClientContext): void {
       locale: NS,
     }, ProducedFiles),
   )
+  // The prose side of the same vocabulary: the chat view reaches this face
+  // via ctx.get, so its absence — this plugin composed out — is the off state.
+  const t = ctx.locale.bind(NS)
+  const mentions: ChatFileMentions = {
+    forClosing(owner) {
+      const paths = producedForClosing(owner.nodes, owner.seq)
+      if (paths.length === 0) return undefined
+      return producedFileMentions(paths, owner.openFile, path => t('produced.open', { name: path }))
+    },
+  }
+  ctx.provide('chatFileMentions', mentions)
 }

packages/client/ui-deliverables/src/client/turn-deliverables.ts

@@ -4,6 +4,7 @@
  * own follow-along `locations`, never the closing prose.
  */
 import type { ConversationNode, ToolResultNode } from '@deepseek-ai/dsh-client-runtime/client'
+import type { MarkdownFileMentions } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { TurnTailOwnerProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
 
 /**
@@ -88,3 +89,45 @@ export function selectProducedFiles(owner: TurnTailOwnerProps): readonly string[
   const paths = producedForClosing(nodes, seq)
   return paths.length === 0 ? null : paths
 }
+
+/**
+ * Trailing path segment, the part that identifies the file at a glance.
+ * @param path - Slash- or backslash-separated path.
+ * @returns The final segment, or the whole string when separator-free.
+ */
+export function basename(path: string): string {
+  const at = Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\'))
+  return at === -1 ? path : path.slice(at + 1)
+}
+
+/**
+ * File-mention vocabulary over one turn's produced paths, for the closing
+ * message's prose: an inline-code token opens the file it names. A token
+ * resolves by exact path, or by being exactly the basename of exactly one
+ * produced path — a basename two paths share stays inert rather than
+ * guessing, so a mention link can never open the wrong file or 404.
+ * @param paths - The turn's produced paths (tool order, already deduped).
+ * @param openFile - The chat view's file opener.
+ * @param label - Localizes the accessible open-label for a resolved path.
+ * @returns The resolver MarkdownText consumes; the full path rides `title`,
+ * the same disambiguator the row's chips carry.
+ */
+export function producedFileMentions(
+  paths: readonly string[],
+  openFile: (path: string) => void,
+  label: (path: string) => string,
+): MarkdownFileMentions {
+  return {
+    resolve(value) {
+      const path = paths.includes(value) ? value : onlyPathWithBasename(paths, value)
+      if (path === undefined) return undefined
+      return { open: () => { openFile(path) }, label: label(path), title: path }
+    },
+  }
+}
+
+/** The single produced path whose basename is exactly `value`, else undefined. */
+function onlyPathWithBasename(paths: readonly string[], value: string): string | undefined {
+  const matches = paths.filter(path => basename(path) === value)
+  return matches.length === 1 ? matches[0] : undefined
+}

packages/client/ui-deliverables/tests/produced-files.spec.tsx

@@ -13,9 +13,10 @@ import type {
   AssistantMessageNode, ConversationNode, ToolResultNode, UserMessageNode,
 } from '@deepseek-ai/dsh-client-runtime/client'
 import { apply as applyLocale } from '@deepseek-ai/dsh-client-locale/client'
+import type { ChatFileMentions } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { ProducedFiles } from '../src/client/ProducedFiles.tsx'
-import { producedForClosing, selectProducedFiles } from '../src/client/turn-deliverables.ts'
+import { basename, producedFileMentions, producedForClosing, selectProducedFiles } from '../src/client/turn-deliverables.ts'
 import { apply, inject } from '../src/client/index.ts'
 import { apply as applyNode } from '../src/index.ts'
 import { apply as applyInvariant } from '../src/invariant.ts'
@@ -141,6 +142,33 @@ describe('ProducedFiles row', () => {
   })
 })
 
+describe('producedFileMentions resolver', () => {
+  const label = (path: string) => `打开 ${path}`
+
+  it('resolves exact paths and unique basenames; ambiguity and unknowns stay unresolved', () => {
+    const opened: string[] = []
+    const resolver = producedFileMentions(
+      ['out/index.html', 'a/style.css', 'b/style.css'],
+      (path) => { opened.push(path) },
+      label,
+    )
+    // Unique basename resolves to its full path; the full path rides title.
+    const byBasename = resolver.resolve('index.html')
+    expect(byBasename?.label).toBe('打开 out/index.html')
+    expect(byBasename?.title).toBe('out/index.html')
+    byBasename?.open()
+    expect(opened).toEqual(['out/index.html'])
+    // An exact path resolves even when its basename is ambiguous.
+    const exact = resolver.resolve('a/style.css')
+    expect(exact?.title).toBe('a/style.css')
+    // A basename two paths share stays unresolved rather than guessing,
+    // and so does a token naming nothing the turn wrote.
+    expect(resolver.resolve('style.css')).toBeUndefined()
+    expect(resolver.resolve('notes.md')).toBeUndefined()
+    expect(basename('a\\b\\c.txt')).toBe('c.txt')
+  })
+})
+
 describe('package shells', () => {
   it('the node half mounts inert and the invariant companion registers ownership', async () => {
     // The node half is deliberately inert; mounting it must simply not throw.
@@ -172,7 +200,24 @@ describe('plugin registration', () => {
     await fiber.await()
     expect(ctx.slots.entries('conversation.chat.turnTail')).toHaveLength(1)
 
+    // The prose face is live while the plugin is: a produced turn yields a
+    // resolver whose matches open through the owner-supplied opener.
+    const opened: string[] = []
+    const owner = {
+      nodes: [user(1, 'go'), wrote(2, 'w', 'site/report.html'), assistant(3, 'done', 1)],
+      seq: 3,
+      openFile: (path: string) => { opened.push(path) },
+    }
+    const service = (ctx as unknown as { get(name: string): ChatFileMentions | undefined }).get('chatFileMentions')
+    const mentions = service?.forClosing(owner)
+    mentions?.resolve('report.html')?.open()
+    expect(opened).toEqual(['site/report.html'])
+    // A turn that produced nothing yields no vocabulary at all.
+    expect(service?.forClosing({ ...owner, nodes: [user(1, 'hi'), assistant(2, 'ok', 1)], seq: 2 })).toBeUndefined()
+
     await fiber.dispose()
     expect(ctx.slots.entries('conversation.chat.turnTail')).toHaveLength(0)
+    // Fiber teardown retracts the service: the consumer's ctx.get sees the off state.
+    expect((ctx as unknown as { get(name: string): unknown }).get('chatFileMentions')).toBeUndefined()
   })
 })

packages/client/ui-primitives/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-primitives/README.md
-README.md: 7571cb48424b650a1aaa5222b33a3ee14faa69b4
-README.zh.md: fa0c3f24023ec8c1eb77553bfe191801b6698687
+README.md: a5f35c9a41008921c6a1e3a4de3fd3f38af926c0
+README.zh.md: 54c70ed29e73e196a9be60ddb794c12187dbe0c5

packages/client/ui-primitives/src/index.ts

@@ -40,7 +40,7 @@ export { CodeBlock } from './markdown/CodeBlock.tsx'
 export type { CodeBlockProps } from './markdown/CodeBlock.tsx'
 export { JsonBlock } from './markdown/JsonBlock.tsx'
 export { MarkdownText } from './markdown/MarkdownText.tsx'
-export type { MarkdownCodeLabels } from './markdown/MarkdownText.tsx'
+export type { MarkdownCodeLabels, MarkdownFileMentions } from './markdown/MarkdownText.tsx'
 export { MessageText } from './markdown/MessageText.tsx'
 export { extractMarkdownPlainText } from './markdown/plain-text.ts'
 export type { MarkdownPlainTextMode, MarkdownPlainTextOptions } from './markdown/plain-text.ts'

packages/client/ui-primitives/src/markdown/MarkdownText.module.css

@@ -241,3 +241,23 @@
   background: var(--dsw-alias-bg-base);
   object-fit: contain;
 }
+
+/* Inline file mention: a real file named in prose is the same affordance as a
+   tool row's path link, so it reads the same — underlined at rest. */
+.fileMention {
+  margin: 0;
+  padding: 0;
+  border: none;
+  background: none;
+  font: inherit;
+  color: var(--dsw-alias-label-secondary);
+  text-decoration: underline;
+  text-decoration-color: var(--dsw-alias-label-quaternary);
+  text-underline-offset: 3px;
+  cursor: pointer;
+}
+
+.fileMention:hover {
+  color: var(--dsw-alias-label-primary);
+  text-decoration-color: currentColor;
+}

packages/client/ui-primitives/src/markdown/MarkdownText.tsx

@@ -19,20 +19,25 @@ import {
   collectReferenceTargets, createReferenceTargets, renderBlocks, renderFootnoteSection,
   wrapBlockChildren,
 } from './render.tsx'
-import type { MarkdownCodeLabels, MarkdownRenderContext, ReferenceTargets } from './render.tsx'
+import type { MarkdownCodeLabels, MarkdownFileMentions, MarkdownRenderContext, ReferenceTargets } from './render.tsx'
 import 'katex/dist/katex.min.css'
 import css from './MarkdownText.module.css'
 
-export type { MarkdownCodeLabels } from './render.tsx'
+export type { MarkdownCodeLabels, MarkdownFileMentions } from './render.tsx'
 
 /** One settled full render: parse with math, resolve references, append the footnote section. */
-function renderSettled(text: string, codeLabels: MarkdownCodeLabels | undefined): ReactNode[] {
+function renderSettled(
+  text: string,
+  codeLabels: MarkdownCodeLabels | undefined,
+  fileMentions: MarkdownFileMentions | undefined,
+): ReactNode[] {
   const root = parseGfmWithMath(text)
   const targets = createReferenceTargets()
   collectReferenceTargets(root.children, targets)
   const context: MarkdownRenderContext = {
     streaming: false,
     codeLabels,
+    fileMentions,
     targets,
     footnoteOrder: [],
     footnoteCounts: new Map(),
@@ -96,6 +101,7 @@ class StreamingRenderer {
       const frozenContext: MarkdownRenderContext = {
         streaming: true,
         codeLabels: this.codeLabels,
+        fileMentions: undefined,
         targets: frameTargets,
         footnoteOrder: this.frozenFootnoteOrder,
         footnoteCounts: this.frozenFootnoteCounts,
@@ -113,6 +119,7 @@ class StreamingRenderer {
     const tailContext: MarkdownRenderContext = {
       streaming: true,
       codeLabels: this.codeLabels,
+      fileMentions: undefined,
       targets: frameTargets,
       footnoteOrder: [...this.frozenFootnoteOrder],
       footnoteCounts: new Map(this.frozenFootnoteCounts),
@@ -137,28 +144,33 @@ class StreamingRenderer {
  * the finalize swap) and parses incrementally across chunks; `codeLabels`
  * forwards localized copy-button labels to fence CodeBlocks — pass a
  * reference-stable object (memoized per locale revision), because a new
- * identity discards the streaming render cache mid-message.
+ * identity discards the streaming render cache mid-message. `fileMentions`
+ * links inline-code tokens its resolver recognizes as real files; this is
+ * the single streaming gate — it applies to settled renders only, because a
+ * streaming message's vocabulary is not final and frozen cached elements
+ * must not bake in handlers that could go stale.
  * @returns A GFM document with TeX math rendered through KaTeX; raw HTML,
  * relative links, and unsafe protocols are disabled, while absolute HTTP(S)
  * images render directly.
  */
-export const MarkdownText = memo(function MarkdownText({ text, streaming = false, codeLabels }: {
+export const MarkdownText = memo(function MarkdownText({ text, streaming = false, codeLabels, fileMentions }: {
   text: string
   streaming?: boolean
   codeLabels?: MarkdownCodeLabels | undefined
+  fileMentions?: MarkdownFileMentions | undefined
 }) {
   const streamRef = useRef<StreamingRenderer | null>(null)
   const streamLabelsRef = useRef<MarkdownCodeLabels | undefined>(codeLabels)
   const children = useMemo(() => {
     if (!streaming) {
       streamRef.current = null
-      return renderSettled(text, codeLabels)
+      return renderSettled(text, codeLabels, fileMentions)
     }
     if (streamRef.current === null || streamLabelsRef.current !== codeLabels) {
       streamRef.current = new StreamingRenderer(codeLabels)
       streamLabelsRef.current = codeLabels
     }
     return streamRef.current.render(text)
-  }, [text, streaming, codeLabels])
+  }, [text, streaming, codeLabels, fileMentions])
   return <div className={css.markdown}>{children}</div>
 })

packages/client/ui-primitives/src/markdown/render.tsx

@@ -99,6 +99,21 @@ export function collectReferenceTargets(
   }
 }
 
+/**
+ * File-mention affordance for inline code: the owner resolves an authored
+ * token to the file it names, using its own vocabulary of real files — the
+ * renderer never guesses at what looks like a path.
+ */
+export interface MarkdownFileMentions {
+  /**
+   * Resolve one inline-code token.
+   * @param value - The authored token, exactly as written.
+   * @returns The opener with its accessible label and full-path title, or
+   * undefined when the token names no known file — it then stays inert code.
+   */
+  resolve(value: string): { open: () => void; label: string; title: string } | undefined
+}
+
 /**
  * One render pass's state: immutable options and targets plus the footnote
  * numbering accumulated in document order while references render.
@@ -108,6 +123,10 @@ export interface MarkdownRenderContext {
   readonly streaming: boolean
   /** Localized fence copy-button labels. */
   readonly codeLabels: MarkdownCodeLabels | undefined
+  /** Inline-code file mentions; absent wherever no opener vocabulary exists. */
+  readonly fileMentions: MarkdownFileMentions | undefined
+  /** Inside an anchor's children: interactive mentions must not nest there. */
+  readonly inLink?: boolean
   /** Reference targets visible to this pass. */
   readonly targets: ReferenceTargets
   /** Footnote identifiers in first-reference order; a footnote's number is its 1-based index here. */
@@ -217,7 +236,27 @@ function renderNode(node: Md.RootContent, key: Key, context: MarkdownRenderConte
       // authored text, not a parsed destination, so no normalizeUri: port,
       // path, and query render unchanged.
       const href = inlineCodeHttpUrl(value)
-      return <code key={key}>{href === undefined ? value : renderSafeLink(href, [value], 'link')}</code>
+      if (href !== undefined) return <code key={key}>{renderSafeLink(href, [value], 'link')}</code>
+      // A token the owner's file-mention vocabulary recognizes opens that
+      // file; the resolver, not this renderer, decides what names a file.
+      // Inside an anchor the token stays inert — a button cannot nest there.
+      const mention = context.inLink === true ? undefined : context.fileMentions?.resolve(value)
+      if (mention !== undefined) {
+        return (
+          <code key={key}>
+            <button
+              type="button"
+              className={css.fileMention}
+              title={mention.title}
+              aria-label={mention.label}
+              onClick={mention.open}
+            >
+              {value}
+            </button>
+          </code>
+        )
+      }
+      return <code key={key}>{value}</code>
     }
     case 'html':
       // No HTML parser enters the pipeline: raw HTML stays literal text.
@@ -236,7 +275,7 @@ function renderNode(node: Md.RootContent, key: Key, context: MarkdownRenderConte
     case 'table':
       return renderTable(node, key, context)
     case 'link':
-      return renderAnchor(node.url, renderChildren(node.children, context), key)
+      return renderAnchor(node.url, renderChildren(node.children, { ...context, inLink: true }), key)
     case 'linkReference':
       return renderLinkReference(node, key, context)
     case 'image':
@@ -460,14 +499,14 @@ function renderLinkReference(
   context: MarkdownRenderContext,
 ): ReactNode {
   const definition = context.targets.definitions.get(node.identifier.toUpperCase())
-  const children = renderChildren(node.children, context)
   if (definition === undefined) {
     // The grammar only emits references whose definitions exist somewhere in
     // the same parse, but incremental segments and hand-built trees may still
-    // present unresolved ones: revert to the bracketed source text.
-    return <Fragment key={key}>{'['}{children}{referenceSuffix(node)}</Fragment>
+    // present unresolved ones: revert to the bracketed source text — which is
+    // not an anchor, so mentions inside it stay live.
+    return <Fragment key={key}>{'['}{renderChildren(node.children, context)}{referenceSuffix(node)}</Fragment>
   }
-  return renderAnchor(definition.url, children, key)
+  return renderAnchor(definition.url, renderChildren(node.children, { ...context, inLink: true }), key)
 }
 
 function renderImageReference(

packages/client/ui-primitives/tests/markdown-render-units.spec.tsx

@@ -20,6 +20,7 @@ function makeContext(): MarkdownRenderContext {
   return {
     streaming: false,
     codeLabels: undefined,
+    fileMentions: undefined,
     targets: createReferenceTargets(),
     footnoteOrder: [],
     footnoteCounts: new Map(),

packages/client/ui-primitives/tests/markdown.spec.tsx

@@ -148,6 +148,49 @@ describe('MarkdownText', () => {
     expect(container.querySelector('pre code a')).toBeNull()
   })
 
+  it('links inline code through the file-mention resolver: URL first, settled only, never inside links', () => {
+    const opened: string[] = []
+    const fileMentions = {
+      resolve: (value: string) => value === 'index.html' || value === 'out/index.html'
+        ? { open: () => { opened.push(value) }, label: 'Open out/index.html', title: 'out/index.html' }
+        : undefined,
+    }
+    const source = [
+      '`index.html`',
+      '`other.css`',
+      '`https://example.com/`',
+      // Inside an anchor the mention stays inert code: a button cannot nest there.
+      '[see `out/index.html`](https://example.com/doc)',
+      '[ref `out/index.html`][target]',
+      '[target]: https://example.com/ref',
+      '```',
+      'index.html',
+      '```',
+    ].join('\n\n')
+    const { container } = render(<MarkdownText text={source} fileMentions={fileMentions} />)
+
+    const mention = screen.getByRole('button', { name: 'Open out/index.html' })
+    expect(mention.closest('code')).not.toBeNull()
+    // The full path rides title, the same disambiguator the row's chips carry.
+    expect(mention.getAttribute('title')).toBe('out/index.html')
+    fireEvent.click(mention)
+    expect(opened).toEqual(['index.html'])
+    // Exactly one live mention: the two inside anchors declined, and an
+    // unresolved token plus fenced code stay inert.
+    expect(container.querySelectorAll('code button')).toHaveLength(1)
+    expect(container.querySelectorAll('a code button, a button')).toHaveLength(0)
+    expect(screen.getByText('other.css').closest('button')).toBeNull()
+    // URL promotion wins before the resolver sees a token.
+    expect(screen.getByText('https://example.com/').closest('a')).not.toBeNull()
+
+    // Streaming renders keep mentions off — the one gate lives here: cached
+    // frozen elements must not bake in handlers that could go stale.
+    const streamed = render(
+      <MarkdownText text={'`index.html`\n\nmore\n\n'} streaming fileMentions={fileMentions} />,
+    )
+    expect(streamed.container.querySelector('button')).toBeNull()
+  })
+
   it('exposes the CJK strong syntax as a micromark extension needing CommonMark attention markers', () => {
     const extension = cjkFriendlyStrong()
     expect(cjkFriendlyStrong()).toBe(extension)

tsconfig.host.json

@@ -49,6 +49,7 @@
     "apps/web/tests/goal-bar.e2e.ts",
     "apps/web/tests/startup-auto-selection.e2e.ts",
     "apps/web/tests/produced-files.e2e.ts",
+    "apps/web/tests/produced-file-mentions.e2e.ts",
     "apps/web/tests/subagent-conversation.e2e.ts",
     "apps/web/tests/bash-abort-row.e2e.ts",
     "apps/web/tests/skill-tool-row.e2e.ts",