diff --git a/electron/main/ai/agent/codex-tool-bridge.ts b/electron/main/ai/agent/codex-tool-bridge.ts
index e730f42d..f2d33c05 100644
--- a/electron/main/ai/agent/codex-tool-bridge.ts
+++ b/electron/main/ai/agent/codex-tool-bridge.ts
@@ -60,11 +60,48 @@ function mergeUsage(a: AiRunUsage | undefined, b: AiRunUsage | undefined): AiRun
   }
 }
 
+/** 从混合文本中提取彼此相邻的顶层 JSON 对象，正确跳过字符串里的花括号。 */
+function extractTopLevelJsonObjects(text: string): string[] {
+  const objects: string[] = []
+  let start = -1
+  let depth = 0
+  let inString = false
+  let escaped = false
+
+  for (let index = 0; index < text.length; index += 1) {
+    const char = text[index]
+    if (inString) {
+      if (escaped) {
+        escaped = false
+      } else if (char === '\\') {
+        escaped = true
+      } else if (char === '"') {
+        inString = false
+      }
+      continue
+    }
+    if (char === '"' && depth > 0) {
+      inString = true
+    } else if (char === '{') {
+      if (depth === 0) start = index
+      depth += 1
+    } else if (char === '}' && depth > 0) {
+      depth -= 1
+      if (depth === 0 && start >= 0) {
+        objects.push(text.slice(start, index + 1))
+        start = -1
+      }
+    }
+  }
+  return objects
+}
+
 function jsonCandidates(text: string): string[] {
   const trimmed = stripReasoningMarkup(text).trim()
   const candidates = [trimmed]
   const fenced = trimmed.match(/```(?:json)?\s*([\s\S]*?)```/i)?.[1]?.trim()
   if (fenced) candidates.push(fenced)
+  candidates.push(...extractTopLevelJsonObjects(trimmed))
   const firstBrace = trimmed.indexOf('{')
   const lastBrace = trimmed.lastIndexOf('}')
   if (firstBrace >= 0 && lastBrace > firstBrace) {
@@ -75,6 +112,7 @@ function jsonCandidates(text: string): string[] {
 
 /** 解析 Codex 返回的宿主工具协议；普通聊天文本返回 null，由调用方直接展示。 */
 export function parseCodexToolEnvelope(text: string): CodexToolEnvelope | null {
+  let latest: CodexToolEnvelope | null = null
   for (const candidate of jsonCandidates(text)) {
     let value: unknown
     try {
@@ -99,9 +137,9 @@ export function parseCodexToolEnvelope(text: string): CodexToolEnvelope | null {
       }
       toolCalls.push({ name, arguments: rawCall.arguments })
     }
-    if (valid) return { toolCalls, finalText: value.finalText.trim() }
+    if (valid) latest = { toolCalls, finalText: value.finalText.trim() }
   }
-  return null
+  return latest
 }
 
 function buildToolProtocolPrompt(tools: Tool[]): string {
diff --git a/electron/main/ai/agent/run-agent-codex-cli.test.mjs b/electron/main/ai/agent/run-agent-codex-cli.test.mjs
index e51b5d81..7cb9ea4e 100644
--- a/electron/main/ai/agent/run-agent-codex-cli.test.mjs
+++ b/electron/main/ai/agent/run-agent-codex-cli.test.mjs
@@ -57,7 +57,9 @@ test('Codex CLI 可通过宿主工具生成暂存变更，重复调用不会重
     `  const text = !bridgeEnabled`,
     `    ? JSON.stringify({ toolCalls: [], finalText: '宿主工具桥未启用。' })`,
     `    : prompt.includes('change_id=change-1') ? ${JSON.stringify(finalResponse)} : ${JSON.stringify(toolResponse)}`,
-    `  console.log(JSON.stringify({ type: 'item.completed', item: { type: 'agent_message', text } }))`,
+    `  const event = JSON.stringify({ type: 'item.completed', item: { type: 'agent_message', text } })`,
+    `  console.log(event)`,
+    `  console.log(event)`,
     `  console.log(JSON.stringify({ type: 'turn.completed', usage: { input_tokens: 12, output_tokens: 8 } }))`,
     '})'
   ].join('\n')
@@ -122,3 +124,20 @@ test('Codex 宿主工具协议兼容 JSON 代码块，普通聊天文本不会
   assert.equal(parseCodexToolEnvelope('这是普通聊天回复。'), null)
   assert.equal(parseCodexToolEnvelope('{"title":"用户要求的 JSON 内容"}'), null)
 })
+
+test('Codex CLI 重复返回相同协议 JSON 时仍能解析工具调用', () => {
+  const response = '{"toolCalls":[{"name":"read_chapter","arguments":{"chapter_id":"chapter-1"}}],"finalText":""}'
+  assert.deepEqual(parseCodexToolEnvelope(response + response), {
+    toolCalls: [{ name: 'read_chapter', arguments: { chapter_id: 'chapter-1' } }],
+    finalText: ''
+  })
+})
+
+test('Codex CLI 连续返回多个有效协议 JSON 时采用最后一个结果', () => {
+  const first = '{"toolCalls":[{"name":"read_chapter","arguments":{"chapter_id":"chapter-1"}}],"finalText":""}'
+  const latest = '{"toolCalls":[{"name":"read_chapter","arguments":{"chapter_id":"chapter-2"}}],"finalText":""}'
+  assert.deepEqual(parseCodexToolEnvelope(first + latest), {
+    toolCalls: [{ name: 'read_chapter', arguments: { chapter_id: 'chapter-2' } }],
+    finalText: ''
+  })
+})
diff --git a/electron/main/ai/agent/tools/chapter-data-access.ts b/electron/main/ai/agent/tools/chapter-data-access.ts
index 7e69c2d9..dbaece60 100644
--- a/electron/main/ai/agent/tools/chapter-data-access.ts
+++ b/electron/main/ai/agent/tools/chapter-data-access.ts
@@ -4,6 +4,7 @@ import { commitChapterEditInDb } from './chapter-commit'
 import {
   insertInHtml,
   joinChapterBlocks,
+  replaceAllInHtml,
   replaceInHtml,
   stripHtmlTags,
   textToHtmlParagraphs
@@ -32,7 +33,7 @@ export type ChapterSummaryItem = {
 }
 
 export type ChapterEdit = {
-  operation: 'replace' | 'insert' | 'append'
+  operation: 'replace' | 'replace_all' | 'insert' | 'append'
   search?: string
   content: string
   position?: 'before' | 'after' | 'start' | 'end'
@@ -226,6 +227,9 @@ export async function applyChapterEdit(
     }
     newContent = replaceInHtml(oldContent, searchText, edit.content)
     preview = `Replaced "${searchText.slice(0, 30)}..." -> "${edit.content.slice(0, 30)}..."`
+  } else if (edit.operation === 'replace_all') {
+    newContent = replaceAllInHtml(oldContent, edit.content)
+    preview = `Replaced entire chapter with ${edit.content.length} chars`
   } else if (edit.operation === 'insert') {
     if (!edit.search && edit.position !== 'start' && edit.position !== 'end') {
       throw new Error('insert requires search or start/end position')
@@ -284,6 +288,9 @@ export async function computeChapterEdit(
     }
     newContent = replaceInHtml(oldContent, searchText, edit.content)
     preview = `Replaced "${searchText.slice(0, 30)}..." -> "${edit.content.slice(0, 30)}..."`
+  } else if (edit.operation === 'replace_all') {
+    newContent = replaceAllInHtml(oldContent, edit.content)
+    preview = `Replaced entire chapter with ${edit.content.length} chars`
   } else if (edit.operation === 'insert') {
     if (!edit.search && edit.position !== 'start' && edit.position !== 'end') {
       throw new Error('insert requires search or start/end position')
@@ -306,7 +313,9 @@ export async function computeChapterEdit(
     preview,
     chapterTitle,
     // 只包含变更片段，用于 diff 展示（不是整章）
-    beforeFragment: edit.operation === 'replace' ? (edit.search?.trim() ?? '') : '',
+    beforeFragment: edit.operation === 'replace_all'
+      ? stripHtmlTags(oldContent)
+      : edit.operation === 'replace' ? (edit.search?.trim() ?? '') : '',
     afterFragment: edit.content
   }
 }
diff --git a/electron/main/ai/agent/tools/chapter-html-edit.test.mjs b/electron/main/ai/agent/tools/chapter-html-edit.test.mjs
index 0f6abaaa..8980516c 100644
--- a/electron/main/ai/agent/tools/chapter-html-edit.test.mjs
+++ b/electron/main/ai/agent/tools/chapter-html-edit.test.mjs
@@ -4,7 +4,8 @@ import test from 'node:test'
 import {
   insertInHtml,
   joinChapterBlocks,
-  replaceInHtml
+  replaceInHtml,
+  replaceAllInHtml
 } from './chapter-html-edit.ts'
 
 test('段内替换不会生成嵌套 p 或额外空段落', () => {
@@ -32,3 +33,10 @@ test('锚点插入保持合法段落结构', () => {
 test('空编辑器追加正文时替换占位空段落', () => {
   assert.equal(joinChapterBlocks('<p></p>', '<p>正文</p>', 'end'), '<p>正文</p>')
 })
+
+test('整章替换不需要定位原文，并重新生成合法段落', () => {
+  assert.equal(
+    replaceAllInHtml('<p>旧正文</p>', '新正文第一段\n\n新正文第二段'),
+    '<p>新正文第一段</p><p>新正文第二段</p>'
+  )
+})
diff --git a/electron/main/ai/agent/tools/chapter-html-edit.ts b/electron/main/ai/agent/tools/chapter-html-edit.ts
index cd65ca26..b52c6fec 100644
--- a/electron/main/ai/agent/tools/chapter-html-edit.ts
+++ b/electron/main/ai/agent/tools/chapter-html-edit.ts
@@ -103,6 +103,11 @@ export function replaceInHtml(html: string, search: string, replacement: string)
   return html.slice(0, htmlStart) + textToInlineHtml(replacement) + html.slice(htmlEnd)
 }
 
+/** 整章替换：显式操作才会调用，不依赖原文定位，输出标准段落 HTML。 */
+export function replaceAllInHtml(_html: string, replacement: string): string {
+  return textToHtmlParagraphs(replacement)
+}
+
 export function insertInHtml(
   html: string,
   search: string,
diff --git a/electron/main/ai/agent/tools/chapter-tools.ts b/electron/main/ai/agent/tools/chapter-tools.ts
index 935d717d..18e82ce3 100644
--- a/electron/main/ai/agent/tools/chapter-tools.ts
+++ b/electron/main/ai/agent/tools/chapter-tools.ts
@@ -174,8 +174,8 @@ export function createChapterTools(callbacks: ChapterToolCallbacks): Tool[] {
         properties: {
           operation: {
             type: 'string',
-            enum: ['replace', 'insert', 'append'],
-            description: 'Edit operation.'
+            enum: ['replace', 'replace_all', 'insert', 'append'],
+            description: 'replace performs a local search-based replacement; replace_all explicitly replaces the whole chapter; insert/append add content.'
           },
           chapter_id: {
             type: 'string',
@@ -217,7 +217,7 @@ export function createChapterTools(callbacks: ChapterToolCallbacks): Tool[] {
         return { content: error instanceof Error ? error.message : String(error), isError: true }
       }
 
-      const operation = String(input.operation) as 'replace' | 'insert' | 'append'
+      const operation = String(input.operation) as 'replace' | 'replace_all' | 'insert' | 'append'
       const content = String(input.content || '')
       const search = input.search ? String(input.search) : undefined
       const position = input.position ? String(input.position) as 'before' | 'after' | 'start' | 'end' : undefined
diff --git a/electron/main/ai/runtime-v2/system-prompt.ts b/electron/main/ai/runtime-v2/system-prompt.ts
index 03ce2ef4..8c48b0af 100644
--- a/electron/main/ai/runtime-v2/system-prompt.ts
+++ b/electron/main/ai/runtime-v2/system-prompt.ts
@@ -33,6 +33,7 @@ const CORE_SYSTEM = `你是一位小说创作项目的资深创作助手。你
 - 每批资料读取完成后，必须在可见回复区输出阶段性分析，不要只把判断放在思考过程里。阶段性分析应包含：已确认事实、证据来源、仍缺资料、下一步读取/处理计划。若还要继续读，先说明为什么继续读。
 - 只改用户指向的对象。用户说要改章节正文，就聚焦章节正文（stage_chapter_edit）；不要顺手去改人物卡、大纲、创作记忆等用户没提到的数据。每次动手前先自问："这个改动是用户这次要的吗？"不是就别做。
 - 需要修改章节正文、人物卡、大纲等实际数据时，调用对应的 stage_* 工具产出**暂存变更**，不要在回复正文里"贴出修改结果"。
+- 章节局部替换使用 stage_chapter_edit(operation=replace) 并提供逐字来自正文的 search；用户明确要求重写、压缩或整体替换整章时，使用 operation=replace_all，无需 search。不要用缺少 search 的 replace，也不要因为整章替换缺少定位片段而停止任务。
 - stage_workflow_document（创作记忆：当前状态、创作计划、写作进度、伏笔悬念、素材清单、人物关系梳理）只在用户明确要求整理/沉淀创作记忆时才用，或它确实是本次任务不可或缺的产物。绝不把它当成每次回复的默认副产品——用户只是要改正文或讨论问题时，不要附带生成创作记忆变更。
 - 暂存变更不是最终写入。用户会在暂存区逐条审阅确认。禁止把 stage_* 的调用描述为"已完成修改"、"已写入"、"已修复"。可以说"已生成待审阅的修改"。
 - 用户设定优先。已有资料哪怕不完美，也不擅自颠覆。修改要有明确理由，写进 stage_* 的 reason 字段。
diff --git a/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs b/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs
index 24f3f2f1..bc12d16e 100644
--- a/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs
+++ b/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs
@@ -87,6 +87,34 @@ test('章节面板禁止暂存当前章节之外的修改', async () => {
   assert.equal(stagedStore.list({}, 'session-1').length, 0)
 })
 
+test('整章重写使用 replace_all，无需提供 search', async () => {
+  const { tool, stagedStore } = makeTool({ currentChapterId: 'chapter-1' })
+  const operationSchema = tool.definition.inputSchema.properties.operation
+
+  assert.ok(operationSchema.enum.includes('replace_all'))
+  const result = await runTool(tool, {
+    operation: 'replace_all',
+    content: '整章新正文',
+    reason: '按拆章方案重写本章'
+  })
+
+  assert.equal(result.isError, undefined)
+  assert.equal(stagedStore.list({}, 'session-1').length, 1)
+})
+
+test('局部 replace 缺少 search 时仍拒绝，避免误覆盖整章', async () => {
+  const { tool, stagedStore } = makeTool({ currentChapterId: 'chapter-1' })
+  const result = await runTool(tool, {
+    operation: 'replace',
+    content: '不能被当成整章正文',
+    reason: '参数遗漏测试'
+  })
+
+  assert.equal(result.isError, true)
+  assert.equal(result.content, 'replace 需要提供 search。')
+  assert.equal(stagedStore.list({}, 'session-1').length, 0)
+})
+
 test('同一轮多次暂存会基于上一条暂存后的章节正文继续计算', async () => {
   const { tool, stagedStore, calls } = makeTool({ currentChapterId: 'chapter-1' })
 
diff --git a/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.ts b/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.ts
index 433f860d..8fb063a4 100644
--- a/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.ts
+++ b/electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.ts
@@ -112,7 +112,7 @@ export function makeStageChapterEditToolCore(deps: StageChapterEditToolDeps): To
     definition: {
       name: 'stage_chapter_edit',
       description:
-        '暂存对章节正文的修改，不直接写库。变更进入待审阅暂存区，用户在 UI 中确认后才写回。参数：chapter_id（可选，缺省用当前章节）、operation（replace/insert/append）、content（新内容）、search（replace 定位文本 / insert 锚点）、position（insert 前后 / 起首 / 末尾）、reason（写给用户看的一句话理由）。',
+        '暂存对章节正文的修改，不直接写库。变更进入待审阅暂存区，用户在 UI 中确认后才写回。局部替换用 replace 并提供 search；整章重写必须显式用 replace_all，无需 search；另支持 insert/append。',
       inputSchema: {
         type: 'object',
         properties: {
@@ -122,8 +122,8 @@ export function makeStageChapterEditToolCore(deps: StageChapterEditToolDeps): To
           },
           operation: {
             type: 'string',
-            enum: ['replace', 'insert', 'append'],
-            description: 'replace=按 search 定位后替换；insert=按 search 或 position 插入；append=末尾追加。'
+            enum: ['replace', 'replace_all', 'insert', 'append'],
+            description: 'replace=按 search 定位后局部替换；replace_all=整章替换且无需 search；insert=按 search 或 position 插入；append=末尾追加。'
           },
           content: { type: 'string', description: '要写入的新文本（纯文本，工具会转成段落）。' },
           search: { type: 'string', description: 'replace 必填：目标文本；insert 可选：锚点文本。' },
@@ -161,7 +161,7 @@ export function makeStageChapterEditToolCore(deps: StageChapterEditToolDeps): To
         }
       }
 
-      const operation = String(input.operation) as 'replace' | 'insert' | 'append'
+      const operation = String(input.operation) as 'replace' | 'replace_all' | 'insert' | 'append'
       const content = String(input.content || '')
       const search = input.search ? String(input.search) : undefined
       const position = input.position
diff --git a/package.json b/package.json
index b836264a..d3b57e57 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   "scripts": {
     "dev": "electron-vite dev",
     "test": "set ELECTRON_RUN_AS_NODE=1&& electron --test electron/shared/continuation-import.test.mjs electron/main/workspace-types.test.mjs renderer/src/features/workspace/outlineReorder.test.mjs renderer/src/features/workspace/volumeCollapseState.test.mjs renderer/src/features/workspace/workbenchMenu.test.mjs renderer/src/features/chapters/chapterFormatting.test.mjs renderer/src/features/ai/taskRegistry.test.mjs renderer/src/features/ai/outlineReferences.test.mjs renderer/src/features/tutorials/tutorials.test.mjs renderer/src/features/knowledge/knowledgeCenter.test.mjs electron/main/story-state-store.test.mjs electron/main/knowledge-document-schema.test.mjs electron/main/ai/settings.test.mjs electron/main/ai/codex-cli.test.mjs electron/main/ai/generate.test.mjs electron/main/ai/provider.test.mjs electron/main/ai/protocol-adapter.test.mjs electron/main/ai/proxy-fetch.test.mjs electron/main/ai/knowledge-retrieval.test.mjs electron/main/ai/state-backfill-store.test.mjs electron/main/ai/state-backfill-task-controller.test.mjs electron/main/ai/runtime/background-task-coordinator.test.mjs electron/main/ai/runtime/chapter-processing-store.test.mjs electron/main/ai/tasks/chapter-session-note.test.mjs electron/main/ai/tasks/outline-context.test.mjs electron/main/ai/tasks/story-state-generation.test.mjs electron/main/ai/tasks/worldview-type.test.mjs electron/main/ai/tasks/ranking-analysis.test.mjs electron/main/ai/tasks/qimao-ranking.test.mjs electron/main/ai/tasks/zongheng-ranking.test.mjs electron/main/ai/runtime-v2/conversation-manager.test.mjs electron/main/ai/runtime-v2/staged-changes-store.test.mjs electron/main/ai/runtime-v2/commit-result.test.mjs electron/main/ai/runtime-v2/context-builder.test.mjs electron/main/ai/runtime-v2/agent-loop.test.mjs electron/main/ai/agent/run-agent-codex-cli.test.mjs electron/main/ai/agent/tools/text-window.test.mjs electron/main/ai/agent/tools/knowledge-tools.test.mjs electron/main/ai/agent/tools/chapter-data-access.test.mjs electron/main/ai/agent/tools/chapter-html-edit.test.mjs electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs",
+    "test:conversation-scroll": "node --test renderer/src/features/assistant/conversationScrollLifecycle.test.mjs",
     "test:ranking": "set ELECTRON_RUN_AS_NODE=1&& electron --test electron/main/ai/tasks/ranking-analysis.test.mjs",
     "typecheck": "vue-tsc --noEmit",
     "build": "pnpm run typecheck && electron-vite build",
diff --git a/renderer/src/components/GlobalAssistantPage.vue b/renderer/src/components/GlobalAssistantPage.vue
index f426a37f..4609ac4c 100644
--- a/renderer/src/components/GlobalAssistantPage.vue
+++ b/renderer/src/components/GlobalAssistantPage.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, nextTick, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue'
+import { computed, nextTick, onActivated, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue'
 import {
   ArrowUp,
   BookMarked,
@@ -58,6 +58,10 @@ function scrollToBottom(smooth = true): void {
   conversationRef.value.scrollTo({ top: conversationRef.value.scrollHeight, behavior: smooth ? 'smooth' : 'auto' })
 }
 
+function restoreConversationPosition(): void {
+  nextTick(() => scrollToBottom(false))
+}
+
 function groupKey(messageId: string, group: ToolGroup): string {
   return `${messageId}:${group.key}:${group.items[0]?.toolUseId ?? 'empty'}`
 }
@@ -171,6 +175,9 @@ onMounted(() => {
   nextTick(() => autoResize())
 })
 
+onMounted(restoreConversationPosition)
+onActivated(restoreConversationPosition)
+
 onBeforeUnmount(() => {
   stopRailResize?.()
 })
diff --git a/renderer/src/components/GlobalAssistantPanel.vue b/renderer/src/components/GlobalAssistantPanel.vue
index ac7b524b..3b5a8d54 100644
--- a/renderer/src/components/GlobalAssistantPanel.vue
+++ b/renderer/src/components/GlobalAssistantPanel.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+import { computed, nextTick, onActivated, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import {
   ChevronRight,
   GripHorizontal,
@@ -170,6 +170,10 @@ function scrollToBottom(smooth = true): void {
   })
 }
 
+function restoreConversationPosition(): void {
+  nextTick(() => scrollToBottom(false))
+}
+
 function closePanel(): void {
   emit('close')
 }
@@ -204,6 +208,9 @@ onMounted(() => {
   window.addEventListener('resize', syncInputHeightBounds)
 })
 
+onMounted(restoreConversationPosition)
+onActivated(restoreConversationPosition)
+
 onBeforeUnmount(() => {
   window.removeEventListener('resize', syncInputHeightBounds)
 })
diff --git a/renderer/src/components/assistantV2/AssistantMessages.vue b/renderer/src/components/assistantV2/AssistantMessages.vue
index 58d77f77..756b2b33 100644
--- a/renderer/src/components/assistantV2/AssistantMessages.vue
+++ b/renderer/src/components/assistantV2/AssistantMessages.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, nextTick, ref, watch } from 'vue'
+import { computed, nextTick, onActivated, onMounted, ref, watch } from 'vue'
 import { marked } from 'marked'
 import DOMPurify from 'dompurify'
 import { useMessage } from 'naive-ui'
@@ -149,6 +149,14 @@ async function scrollToBottom(): Promise<void> {
   if (el) el.scrollTop = el.scrollHeight
 }
 
+function restoreConversationPosition(): void {
+  shouldFollowOutput.value = true
+  void scrollToBottom()
+}
+
+onMounted(restoreConversationPosition)
+onActivated(restoreConversationPosition)
+
 watch(
   () => props.messages.length,
   (length, previousLength) => {
@@ -177,39 +185,106 @@ watch(
   }
 )
 
+const projectDataLabels: Record<string, string> = {
+  worldview: '世界观',
+  characters: '人物设定',
+  organizations: '势力与组织',
+  organization_memberships: '组织成员归属',
+  relationships: '人物关系',
+  outline: '剧情大纲',
+  chapters: '章节资料',
+  plot_threads: '剧情线索',
+  plotThreads: '剧情线索',
+  inspiration: '灵感素材',
+  knowledge: '项目知识库',
+  available_deconstructions: '可用的拆书参考',
+  deconstruction_library: '拆书知识库',
+  reference_works: '已选参考书',
+  workflow_documents: '创作记忆',
+  workflowDocuments: '创作记忆',
+  project_constraints: '项目约束',
+  projectConstraints: '项目约束',
+  style: '写作风格'
+}
+
+const workflowDocumentLabels: Record<string, string> = {
+  task_plan: '创作计划',
+  findings: '灵感与发现',
+  progress: '写作进度',
+  current_status: '项目概况',
+  novel_setting: '世界与设定',
+  character_relationships: '人物关系',
+  pending_hooks: '伏笔悬念',
+  resource_ledger: '素材清单'
+}
+
+const actionLabels: Record<string, string> = {
+  create: '新增',
+  update: '修改',
+  delete: '删除',
+  replace: '替换',
+  replace_all: '替换全文',
+  append: '追加',
+  insert: '插入',
+  restore: '恢复'
+}
+
+function projectDataLabel(value: unknown): string {
+  const key = String(value ?? '').trim()
+  return projectDataLabels[key] ?? (key || '项目资料')
+}
+
+function workflowDocumentLabel(value: unknown): string {
+  const key = String(value ?? '').trim()
+  return workflowDocumentLabels[key] ?? (key || '创作记忆')
+}
+
+function actionLabel(value: unknown, fallback = '修改'): string {
+  const key = String(value ?? '').trim()
+  return actionLabels[key] ?? (key || fallback)
+}
+
 /** 人类可读的工具动作说明。 */
 function describeToolAction(t: AssistantToolCallView): string {
   const a = t.args
   switch (t.toolName) {
-    case 'read_chapter': return `读取章节 ${short(a.chapter_id ?? '当前章节')}`
+    case 'read_chapter': return a.chapter_id ? '读取指定章节内容' : '读取当前章节内容'
     case 'list_chapters': return '列出所有章节'
-    case 'search_project': return `全项目搜索: "${short(a.query ?? a.q)}"`
-    case 'read_project_data':
-      return `读取${short(a.entity_type ?? '项目数据')}${a.entity_id ? ' · ' + short(a.entity_id) : ''}`
+    case 'search_project': return `全项目搜索：“${short(a.query ?? a.q)}”`
+    case 'read_project_data': {
+      const dataLabel = projectDataLabel(a.entity_type)
+      if (a.doc_key) return `读取${dataLabel}：${workflowDocumentLabel(a.doc_key)}`
+      if (a.entity_id) return `精读${dataLabel}中的指定条目`
+      if (a.summary_only === true) return `读取${dataLabel}摘要`
+      return `读取${dataLabel}`
+    }
     case 'stage_chapter_edit':
-      return `暂存章节修改（${short(a.operation ?? 'edit')} · ${short(a.chapter_id ?? '当前章节')}）`
-    case 'stage_chapter_delete':
-      return `暂存删除章节（${short(a.chapter_id ?? '当前章节')}）`
-    case 'stage_chapter_update': return `暂存章节资料修改（${short(a.chapter_id ?? '当前章节')}）`
-    case 'list_chapter_versions': return `查看章节版本（${short(a.chapter_id ?? '当前章节')}）`
-    case 'stage_chapter_restore': return `暂存章节版本恢复（${short(a.version_id)}）`
-    case 'stage_relationship': return `暂存人物关系（${short(a.action ?? 'update')}）`
-    case 'stage_organization_membership': return `暂存组织归属（${short(a.action ?? 'update')}）`
-    case 'stage_inspiration': return `暂存灵感（${short(a.action ?? 'update')}）`
+      return `暂存章节${actionLabel(a.operation)}提案`
+    case 'stage_chapter_create': return `暂存新章节：${short(a.title ?? '未命名章节')}`
+    case 'stage_chapter_delete': return '暂存删除指定章节'
+    case 'stage_chapter_update': return '暂存章节资料修改'
+    case 'list_chapter_versions': return '查看章节历史版本'
+    case 'stage_chapter_restore': return '暂存恢复章节版本'
+    case 'stage_relationship': return `暂存人物关系（${actionLabel(a.action)}）`
+    case 'stage_organization_membership': return `暂存组织归属（${actionLabel(a.action)}）`
+    case 'stage_inspiration': return `暂存灵感（${actionLabel(a.action)}）`
     case 'list_outline_volumes': return '列出所有分卷'
-    case 'stage_outline_volume': return `暂存分卷（${short(a.action ?? 'update')}）`
-    case 'stage_knowledge_document': return `暂存知识文档（${short(a.action ?? 'update')}）`
+    case 'stage_outline_volume': return `暂存分卷（${actionLabel(a.action)}）`
+    case 'stage_knowledge_document': return `暂存知识文档（${actionLabel(a.action)}）`
     case 'stage_project_metadata': return '暂存项目资料修改'
-    case 'stage_worldview': return `暂存世界观（${short(a.action ?? 'update')}）`
-    case 'stage_character': return `暂存人物卡（${short(a.action ?? 'update')}）`
-    case 'stage_organization': return `暂存组织（${short(a.action ?? 'update')}）`
-    case 'stage_outline': return `暂存大纲节点（${short(a.action ?? 'update')}）`
-    case 'stage_constraint': return `暂存项目约束（${short(a.action ?? 'create')}）`
-    case 'stage_plot_thread': return `暂存剧情线索（${short(a.action ?? 'update')}）`
-    case 'stage_workflow_document': return `暂存创作记忆（${short(a.doc_key ?? '')}${a.operation ? ' · ' + short(a.operation) : ''}）`
+    case 'stage_worldview': return `暂存世界观（${actionLabel(a.action)}）`
+    case 'stage_character': return `暂存人物卡（${actionLabel(a.action)}）`
+    case 'stage_organization': return `暂存组织（${actionLabel(a.action)}）`
+    case 'stage_outline': return `暂存大纲节点（${actionLabel(a.action)}）`
+    case 'stage_constraint': return `暂存项目约束（${actionLabel(a.action, '新增')}）`
+    case 'stage_plot_thread': return `暂存剧情线索（${actionLabel(a.action)}）`
+    case 'stage_workflow_document': return `暂存创作记忆（${workflowDocumentLabel(a.doc_key)}${a.operation ? ' · ' + actionLabel(a.operation) : ''}）`
     case 'skill_list': return '查看可用技能'
-    case 'skill_load': return `加载技能: ${short(a.id ?? a.name)}`
-    case 'knowledge_save_document': return `保存知识文档: ${short(a.title)}`
+    case 'skill_load': return '加载写作技能'
+    case 'skill_read_reference': return '读取写作技能参考资料'
+    case 'skill_glob': return '浏览写作技能文件'
+    case 'skill_run_script': return '执行写作技能分析'
+    case 'knowledge_save_document': return `保存知识文档：${short(a.title)}`
     default: return t.toolName
   }
 }
@@ -239,8 +314,14 @@ function isEvidenceTool(name: string): boolean {
 
 function evidenceLabel(t: AssistantToolCallView): string {
   if (t.toolName === 'search_project') return `搜索：${short(t.args.query ?? t.args.q, 28)}`
-  if (t.toolName === 'read_project_data') return `读取资料：${short(t.args.entity_type ?? '项目索引', 28)}`
-  if (t.toolName === 'read_chapter') return `读取章节：${short(t.args.chapter_id ?? '当前章节', 28)}`
+  if (t.toolName === 'read_project_data') {
+    const dataLabel = projectDataLabel(t.args.entity_type ?? '项目索引')
+    if (t.args.doc_key) return `读取资料：${dataLabel} · ${workflowDocumentLabel(t.args.doc_key)}`
+    if (t.args.entity_id) return `精读资料：${dataLabel}中的指定条目`
+    if (t.args.summary_only === true) return `读取资料：${dataLabel}摘要`
+    return `读取资料：${dataLabel}`
+  }
+  if (t.toolName === 'read_chapter') return t.args.chapter_id ? '读取章节：指定章节' : '读取章节：当前章节'
   if (t.toolName === 'list_chapters') return '章节列表'
   return t.toolName
 }
diff --git a/renderer/src/components/chapterWorkspace/ChapterAiMessages.vue b/renderer/src/components/chapterWorkspace/ChapterAiMessages.vue
index 9d408ff9..6ac4e8f5 100644
--- a/renderer/src/components/chapterWorkspace/ChapterAiMessages.vue
+++ b/renderer/src/components/chapterWorkspace/ChapterAiMessages.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, nextTick, onMounted, onBeforeUnmount, ref, watch } from 'vue'
+import { computed, nextTick, onActivated, onMounted, onBeforeUnmount, ref, watch } from 'vue'
 import { ArrowDown, Brain, Check, ChevronDown as ChevronDownIcon, Copy, Edit3, Replace, RotateCw, Sparkles, Undo2, Wand2 } from 'lucide-vue-next'
 import { useMessage } from 'naive-ui'
 import { marked } from 'marked'
@@ -97,6 +97,14 @@ function scrollToBottom(smooth = true): void {
   })
 }
 
+function restoreConversationPosition(): void {
+  isAtBottom.value = true
+  nextTick(() => {
+    scrollToBottom(false)
+    checkScrollPosition()
+  })
+}
+
 watch(
   () => [props.messages.length, lastMsg.value?.content, lastMsg.value?.reasoning, lastMsg.value?.toolCalls?.length, lastMsg.value?.editEvents?.length] as const,
   () => {
@@ -157,6 +165,9 @@ onMounted(() => {
   scrollRef.value?.addEventListener('click', handleCodeCopy)
 })
 
+onMounted(restoreConversationPosition)
+onActivated(restoreConversationPosition)
+
 onBeforeUnmount(() => {
   scrollRef.value?.removeEventListener('scroll', checkScrollPosition)
   scrollRef.value?.removeEventListener('click', handleCodeCopy)
diff --git a/renderer/src/features/assistant/conversationScrollLifecycle.test.mjs b/renderer/src/features/assistant/conversationScrollLifecycle.test.mjs
new file mode 100644
index 00000000..4cb2f204
--- /dev/null
+++ b/renderer/src/features/assistant/conversationScrollLifecycle.test.mjs
@@ -0,0 +1,20 @@
+import assert from 'node:assert/strict'
+import { readFile } from 'node:fs/promises'
+import test from 'node:test'
+
+const components = [
+  '../../components/assistantV2/AssistantMessages.vue',
+  '../../components/chapterWorkspace/ChapterAiMessages.vue',
+  '../../components/GlobalAssistantPanel.vue',
+  '../../components/GlobalAssistantPage.vue'
+]
+
+for (const relativePath of components) {
+  test(`${relativePath} 重新显示已有对话时回到底部`, async () => {
+    const source = await readFile(new URL(relativePath, import.meta.url), 'utf8')
+
+    assert.match(source, /function restoreConversationPosition\s*\([^)]*\)[^{]*\{[\s\S]*?scrollToBottom\s*\(/)
+    assert.match(source, /onMounted\s*\(\s*restoreConversationPosition\s*\)/)
+    assert.match(source, /onActivated\s*\(\s*restoreConversationPosition\s*\)/)
+  })
+}