feat: add bilingual release notes

.github/workflows/packages.yml

@@ -33,6 +33,10 @@ jobs:
         if: github.ref_type == 'tag'
         run: node -e "const p=require('./package.json'); const expected='v'+p.version; if(process.env.GITHUB_REF_NAME!==expected){throw new Error('Expected tag '+expected+', received '+process.env.GITHUB_REF_NAME)}"
 
+      - name: Verify bilingual release notes
+        if: github.ref_type == 'tag'
+        run: npm run release:notes:verify
+
       - name: Install dependencies
         run: npm ci
 
@@ -153,6 +157,9 @@ jobs:
           test "$GITHUB_REF_NAME" = "$expected"
           test "$(git rev-parse "refs/tags/$GITHUB_REF_NAME^{commit}")" = "$GITHUB_SHA"
 
+      - name: Prepare bilingual release notes
+        run: node build/release-notes.cjs --output release-notes.md
+
       - name: Download Windows packages
         uses: actions/download-artifact@v8
         with:
@@ -181,11 +188,11 @@ jobs:
         run: |
           set -euo pipefail
           tag="$GITHUB_REF_NAME"
+          version="$(node -p "require('./package.json').version")"
           if gh release view "$tag" >/dev/null 2>&1; then
-            gh release edit "$tag" --draft
+            gh release edit "$tag" --draft --title "GoodBuddy $version" --notes-file release-notes.md
           else
-            version="$(node -p "require('./package.json').version")"
-            gh release create "$tag" --draft --verify-tag --generate-notes --title "GoodBuddy $version"
+            gh release create "$tag" --draft --verify-tag --title "GoodBuddy $version" --notes-file release-notes.md
           fi
           gh release upload "$tag" dist/release-upload/* --clobber
           gh release edit "$tag" --draft=false --latest

AGENTS.md

@@ -122,20 +122,23 @@ not require release notes.
    inspect the complete commit and file diff from that tag to the release
    commit. For the first tagged release, inspect the relevant repository
    history instead.
-3. Draft concise, user-facing Simplified Chinese release notes based only on
-   verified changes in that range. Use the title
-   `GoodBuddy <version> 更新内容` and separate `功能更新` and `问题修复`
-   sections when applicable. Do not expose internal-only details, credentials,
-   private content, or unverified claims.
-4. Show the exact release-note draft to the user and wait for explicit
-   approval. If the release commit or draft changes after approval, inspect
-   the updated tag range and request approval again.
+3. Draft concise, user-facing release notes in both Simplified Chinese and
+   English based only on verified changes in that range. Use the titles
+   `GoodBuddy <version> 更新内容` and
+   `What's New in GoodBuddy <version>`, with corresponding `功能更新` /
+   `Features` and `问题修复` / `Bug Fixes` sections when applicable. The two
+   language versions must describe the same changes. Do not expose
+   internal-only details, credentials, private content, or unverified claims.
+4. Show the exact bilingual release-note draft to the user and wait for
+   explicit approval. If the release commit or either language version changes
+   after approval, inspect the updated tag range and request approval again.
 5. Only after approval, verify that `package.json` and `package-lock.json`
    contain the same release version, verify the candidate tag does not already
    point elsewhere, create `v${package.version}` at the exact approved commit,
    and push the branch and tag according to the synchronized-remote rules.
-6. Keep the approved release notes as the single source for both the GitHub
+6. Keep both approved language versions as the single source for the GitHub
    Release body and the packaged first-open release-notes modal. The modal
+   displays the release notes matching the current interface language and
    contains no button linking to a full release page.
 
 Never create or push a release tag, and never push a previously created

build/build-release.cjs

@@ -38,6 +38,7 @@ const portableMarkerName = '.goodbuddy-portable.json'
 const portableRequiredFiles = [
   `${productName}.exe`,
   'resources/app.asar',
+  'resources/release-notes.json',
   'resources/icon.ico',
   'resources/tray-icon.png',
   'resources/runtimes/opencode/opencode.exe',
@@ -380,6 +381,7 @@ function verifyUnpackedOutput(directory, options) {
   )
   assertFile(applicationExecutable, '应用主程序')
   assertFile(join(resources, 'app.asar'), '应用 ASAR')
+  assertFile(join(resources, 'release-notes.json'), '版本更新说明')
   assertFile(runtimeExecutable, 'OpenCode Runtime')
   assertFile(
     join(resources, 'runtimes', 'continue', 'dist', 'index.js'),

build/release-notes.cjs

@@ -0,0 +1,173 @@
+const { readFileSync, writeFileSync } = require('node:fs')
+const { join, resolve } = require('node:path')
+
+const root = resolve(__dirname, '..')
+const packageJson = JSON.parse(
+  readFileSync(join(root, 'package.json'), 'utf8')
+)
+const releaseNotesFile = JSON.parse(
+  readFileSync(join(root, 'resources', 'release-notes.json'), 'utf8')
+)
+
+function fail(message) {
+  throw new Error(`Release notes validation failed: ${message}`)
+}
+
+function hasExactKeys(value, keys) {
+  return (
+    value !== null &&
+    typeof value === 'object' &&
+    !Array.isArray(value) &&
+    Object.keys(value).length === keys.length &&
+    keys.every((key) => Object.hasOwn(value, key))
+  )
+}
+
+function validateItems(value, label) {
+  if (!Array.isArray(value) || value.length > 20) {
+    fail(`${label} must contain no more than 20 items`)
+  }
+  return value.map((item) => {
+    if (typeof item !== 'string') {
+      fail(`${label} contains a non-string item`)
+    }
+    const normalized = item.trim()
+    if (!normalized || normalized.length > 240) {
+      fail(`${label} contains an empty or oversized item`)
+    }
+    return normalized
+  })
+}
+
+function validateRelease(value, index) {
+  const label = `releases[${index}]`
+  if (!hasExactKeys(value, ['version', 'releasedAt', 'notes'])) {
+    fail(`${label} has invalid fields`)
+  }
+  if (!/^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)$/u.test(
+    value.version
+  )) {
+    fail(`${label}.version must be a stable semantic version`)
+  }
+  const date = new Date(`${value.releasedAt}T00:00:00.000Z`)
+  if (
+    !/^\d{4}-\d{2}-\d{2}$/u.test(value.releasedAt) ||
+    Number.isNaN(date.getTime()) ||
+    date.toISOString().slice(0, 10) !== value.releasedAt
+  ) {
+    fail(`${label}.releasedAt must be a real YYYY-MM-DD date`)
+  }
+  if (!hasExactKeys(value.notes, ['zh-CN', 'en-US'])) {
+    fail(`${label}.notes must contain zh-CN and en-US`)
+  }
+  const notes = Object.fromEntries(
+    ['zh-CN', 'en-US'].map((locale) => {
+      const localized = value.notes[locale]
+      if (!hasExactKeys(localized, ['features', 'fixes'])) {
+        fail(`${label}.notes.${locale} has invalid fields`)
+      }
+      const features = validateItems(
+        localized.features,
+        `${label}.notes.${locale}.features`
+      )
+      const fixes = validateItems(
+        localized.fixes,
+        `${label}.notes.${locale}.fixes`
+      )
+      if (features.length + fixes.length === 0) {
+        fail(`${label}.notes.${locale} must not be empty`)
+      }
+      return [locale, { features, fixes }]
+    })
+  )
+  if (
+    notes['zh-CN'].features.length !== notes['en-US'].features.length ||
+    notes['zh-CN'].fixes.length !== notes['en-US'].fixes.length
+  ) {
+    fail(`${label} localized section counts do not match`)
+  }
+  return {
+    version: value.version,
+    releasedAt: value.releasedAt,
+    notes
+  }
+}
+
+if (
+  !hasExactKeys(releaseNotesFile, ['formatVersion', 'releases']) ||
+  releaseNotesFile.formatVersion !== 1 ||
+  !Array.isArray(releaseNotesFile.releases) ||
+  releaseNotesFile.releases.length < 1 ||
+  releaseNotesFile.releases.length > 100
+) {
+  fail('unsupported file format')
+}
+
+const allReleases = releaseNotesFile.releases.map(validateRelease)
+const uniqueVersionCount = new Set(
+  allReleases.map((release) => release.version)
+).size
+if (uniqueVersionCount !== allReleases.length) {
+  fail('release versions must be unique')
+}
+
+const releases = allReleases.filter(
+  (release) => release?.version === packageJson.version
+)
+if (releases.length !== 1) {
+  fail(
+    `expected exactly one entry for package version ${packageJson.version}`
+  )
+}
+
+const release = releases[0]
+
+const localizedDefinitions = [
+  {
+    locale: 'zh-CN',
+    title: `GoodBuddy ${release.version} 更新内容`,
+    features: '功能更新',
+    fixes: '问题修复'
+  },
+  {
+    locale: 'en-US',
+    title: `What's New in GoodBuddy ${release.version}`,
+    features: 'Features',
+    fixes: 'Bug Fixes'
+  }
+]
+
+function markdownSection(title, items) {
+  if (items.length === 0) {
+    return []
+  }
+  return [`## ${title}`, '', ...items.map((item) => `- ${item}`), '']
+}
+
+const markdown = localizedDefinitions
+  .flatMap((definition, index) => {
+    const notes = release.notes[definition.locale]
+    return [
+      ...(index === 0 ? [] : ['---', '']),
+      `# ${definition.title}`,
+      '',
+      ...markdownSection(definition.features, notes.features),
+      ...markdownSection(definition.fixes, notes.fixes)
+    ]
+  })
+  .join('\n')
+  .trimEnd()
+  .concat('\n')
+
+const outputIndex = process.argv.indexOf('--output')
+if (outputIndex >= 0) {
+  const outputPath = process.argv[outputIndex + 1]
+  if (!outputPath) {
+    fail('--output requires a path')
+  }
+  writeFileSync(resolve(root, outputPath), markdown, 'utf8')
+} else {
+  process.stdout.write(
+    `Validated bilingual release notes for ${packageJson.version}\n`
+  )
+}

package.json

@@ -20,6 +20,7 @@
     "test:watch": "vitest",
     "build": "npm run typecheck && npm run build:bundle",
     "build:bundle": "electron-vite build",
+    "release:notes:verify": "node build/release-notes.cjs",
     "dist": "npm run build && electron-builder",
     "dist:win": "npm run build && electron-builder --win nsis --x64 --arm64",
     "dist:mac": "npm run build && electron-builder --mac dmg --x64 --arm64",
@@ -53,6 +54,10 @@
           "**/*"
         ]
       },
+      {
+        "from": "resources/release-notes.json",
+        "to": "release-notes.json"
+      },
       {
         "from": "build/icon-taskbar.ico",
         "to": "icon.ico"

resources/release-notes.json

@@ -0,0 +1,45 @@
+{
+  "formatVersion": 1,
+  "releases": [
+    {
+      "version": "0.8.18",
+      "releasedAt": "2026-08-11",
+      "notes": {
+        "zh-CN": {
+          "features": [
+            "新增简体中文与英文界面，可在设置中即时切换并跟随系统语言。",
+            "新增统一的文档解析中心，为聊天附件和知识库导入提供原生文本提取、PDF 页面处理与真实文件诊断。",
+            "新增本地 PP-OCRv6 Tiny、Small 和 Medium 模型，支持校验下载、离线识别以及受管 ZIP 导入和导出。",
+            "扩展离线语音模型，新增中英与中粤英 Paraformer，以及 Whisper Small 和 Medium 多语言档位。",
+            "增强魔法笔记，支持富文本、图片、视频、附件、待办状态和可配置的 AI 评论方式。",
+            "支持为每个项目设置新对话的默认 Runtime。",
+            "扩展直连模型工具与文档处理能力，增加联网搜索、网页读取、附件解析进度和当前系统时间上下文。",
+            "新增首次启动版本更新说明，按当前界面语言展示且每个版本仅自动显示一次。"
+          ],
+          "fixes": [
+            "修复 Execute 模式下内置 OpenCode 和 Continue 仍可能阻止已授权工具的问题。",
+            "修复工具失败信息重复显示，并仅为最近一次失败保留重新编辑入口。",
+            "修复共享开关在部分设置布局中尺寸被文本输入样式覆盖的问题。"
+          ]
+        },
+        "en-US": {
+          "features": [
+            "Added Simplified Chinese and English interfaces with instant switching in Settings and system-language support.",
+            "Added a unified document parsing center for chat attachments and knowledge imports, with native text extraction, PDF page handling, and real-file diagnostics.",
+            "Added local PP-OCRv6 Tiny, Small, and Medium models with verified downloads, offline recognition, and managed ZIP import and export.",
+            "Expanded offline speech models with bilingual and Mandarin-Cantonese-English Paraformer options, plus Whisper Small and Medium multilingual tiers.",
+            "Enhanced Magic Notes with rich text, images, videos, attachments, editable todo states, and configurable AI comment modes.",
+            "Added a per-project default Runtime for new conversations.",
+            "Expanded direct-model tools and document handling with web search, webpage reading, attachment parsing progress, and current system-time context.",
+            "Added first-open release notes that follow the current interface language and appear automatically only once per version."
+          ],
+          "fixes": [
+            "Fixed authorized tools still being blocked for bundled OpenCode and Continue in Execute mode.",
+            "Fixed duplicate tool-failure messages and limited the edit-and-retry action to the latest failed response.",
+            "Fixed shared switches inheriting text-input dimensions in some settings layouts."
+          ]
+        }
+      }
+    }
+  ]
+}

src/main/application-settings-store.test.ts

@@ -73,11 +73,12 @@ describe('ApplicationSettingsStore', () => {
       magicNoteCommentFormat: 'combined'
     })
     expect(JSON.parse(await readFile(filePath, 'utf8'))).toEqual({
-      version: 4,
+      version: 5,
       checkUpdatesOnStartup: false,
       magicNotesEnabled: false,
       magicNoteCommentMode: 'immediate',
-      magicNoteCommentFormat: 'combined'
+      magicNoteCommentFormat: 'combined',
+      lastSeenReleaseNotesVersion: null
     })
     expect(
       (await readdir(directory)).filter((name) => name.endsWith('.tmp'))
@@ -166,6 +167,35 @@ describe('ApplicationSettingsStore', () => {
     })
   })
 
+  it('migrates version 4 settings with no release notes acknowledged', async () => {
+    const { filePath, store } = await createStore()
+    await writeFile(
+      filePath,
+      JSON.stringify({
+        version: 4,
+        checkUpdatesOnStartup: false,
+        magicNotesEnabled: true,
+        magicNoteCommentMode: 'after-save-manual',
+        magicNoteCommentFormat: 'narrative'
+      }),
+      'utf8'
+    )
+
+    await expect(store.getLastSeenReleaseNotesVersion()).resolves.toBeNull()
+    await store.setLastSeenReleaseNotesVersion('0.8.18')
+    await expect(
+      new ApplicationSettingsStore(filePath).getLastSeenReleaseNotesVersion()
+    ).resolves.toBe('0.8.18')
+    expect(JSON.parse(await readFile(filePath, 'utf8'))).toEqual({
+      version: 5,
+      checkUpdatesOnStartup: false,
+      magicNotesEnabled: true,
+      magicNoteCommentMode: 'after-save-manual',
+      magicNoteCommentFormat: 'narrative',
+      lastSeenReleaseNotesVersion: '0.8.18'
+    })
+  })
+
   it('strictly rejects incomplete full settings', () => {
     for (const input of [
       {},
@@ -290,11 +320,12 @@ describe('ApplicationSettingsStore', () => {
       magicNoteCommentFormat: 'combined'
     })
     expect(JSON.parse(await readFile(filePath, 'utf8'))).toEqual({
-      version: 4,
+      version: 5,
       checkUpdatesOnStartup: false,
       magicNotesEnabled: false,
       magicNoteCommentMode: 'immediate',
-      magicNoteCommentFormat: 'combined'
+      magicNoteCommentFormat: 'combined',
+      lastSeenReleaseNotesVersion: null
     })
   })
 

src/main/application-settings-store.ts

@@ -13,13 +13,14 @@ import {
   applicationSettingsUpdateSchema,
   type ApplicationSettings
 } from '../shared/application-settings-contracts'
+import { releaseVersionSchema } from '../shared/release-notes-contracts'
 export {
   applicationSettingsSchema,
   applicationSettingsUpdateSchema
 } from '../shared/application-settings-contracts'
 export type { ApplicationSettings } from '../shared/application-settings-contracts'
 
-const CURRENT_SETTINGS_VERSION = 4
+const CURRENT_SETTINGS_VERSION = 5
 
 const legacyStoredApplicationSettingsSchema = z
   .object({
@@ -45,9 +46,16 @@ const versionThreeStoredApplicationSettingsSchema = z
   })
   .strict()
 
+const versionFourStoredApplicationSettingsSchema = applicationSettingsSchema
+  .extend({
+    version: z.literal(4)
+  })
+  .strict()
+
 const storedApplicationSettingsSchema = applicationSettingsSchema
   .extend({
-    version: z.literal(CURRENT_SETTINGS_VERSION)
+    version: z.literal(CURRENT_SETTINGS_VERSION),
+    lastSeenReleaseNotesVersion: releaseVersionSchema.nullable()
   })
   .strict()
 
@@ -73,6 +81,7 @@ function isMissingFile(error: unknown): boolean {
 
 export class ApplicationSettingsStore {
   private settings?: StoredApplicationSettings
+  private settingsLoad?: Promise<StoredApplicationSettings>
   private updateQueue: Promise<void> = Promise.resolve()
 
   constructor(private readonly filePath: string) {}
@@ -97,6 +106,15 @@ export class ApplicationSettingsStore {
     if (this.settings) {
       return this.settings
     }
+    if (!this.settingsLoad) {
+      this.settingsLoad = this.readStored().finally(() => {
+        this.settingsLoad = undefined
+      })
+    }
+    return this.settingsLoad
+  }
+
+  private async readStored(): Promise<StoredApplicationSettings> {
     try {
       const contents = await readFile(this.filePath, 'utf8')
       let parsed: unknown
@@ -106,19 +124,31 @@ export class ApplicationSettingsStore {
         await this.isolateCorruptFile()
         this.settings = {
           version: CURRENT_SETTINGS_VERSION,
+          lastSeenReleaseNotesVersion: null,
           ...defaultApplicationSettings
         }
         return this.settings
       }
       const result = storedApplicationSettingsSchema.safeParse(parsed)
       if (!result.success) {
+        const versionFourResult =
+          versionFourStoredApplicationSettingsSchema.safeParse(parsed)
+        if (versionFourResult.success) {
+          this.settings = {
+            ...versionFourResult.data,
+            version: CURRENT_SETTINGS_VERSION,
+            lastSeenReleaseNotesVersion: null
+          }
+          return this.settings
+        }
         const versionThreeResult =
           versionThreeStoredApplicationSettingsSchema.safeParse(parsed)
         if (versionThreeResult.success) {
           this.settings = {
             ...versionThreeResult.data,
             version: CURRENT_SETTINGS_VERSION,
-            magicNoteCommentFormat: 'combined'
+            magicNoteCommentFormat: 'combined',
+            lastSeenReleaseNotesVersion: null
           }
           return this.settings
         }
@@ -129,7 +159,8 @@ export class ApplicationSettingsStore {
             ...versionTwoResult.data,
             version: CURRENT_SETTINGS_VERSION,
             magicNoteCommentMode: 'immediate',
-            magicNoteCommentFormat: 'combined'
+            magicNoteCommentFormat: 'combined',
+            lastSeenReleaseNotesVersion: null
           }
           return this.settings
         }
@@ -142,13 +173,15 @@ export class ApplicationSettingsStore {
               legacyResult.data.checkUpdatesOnStartup,
             magicNotesEnabled: false,
             magicNoteCommentMode: 'immediate',
-            magicNoteCommentFormat: 'combined'
+            magicNoteCommentFormat: 'combined',
+            lastSeenReleaseNotesVersion: null
           }
           return this.settings
         }
         await this.isolateCorruptFile()
         this.settings = {
           version: CURRENT_SETTINGS_VERSION,
+          lastSeenReleaseNotesVersion: null,
           ...defaultApplicationSettings
         }
         return this.settings
@@ -162,6 +195,7 @@ export class ApplicationSettingsStore {
       }
       this.settings = {
         version: CURRENT_SETTINGS_VERSION,
+        lastSeenReleaseNotesVersion: null,
         ...defaultApplicationSettings
       }
     }
@@ -178,6 +212,32 @@ export class ApplicationSettingsStore {
     }
   }
 
+  async getLastSeenReleaseNotesVersion(): Promise<string | null> {
+    return (await this.loadStored()).lastSeenReleaseNotesVersion
+  }
+
+  private async persist(next: StoredApplicationSettings): Promise<void> {
+    await mkdir(dirname(this.filePath), { recursive: true })
+    const temporaryPath =
+      `${this.filePath}.${process.pid}.` +
+      `${randomBytes(6).toString('hex')}.tmp`
+    try {
+      await writeFile(
+        temporaryPath,
+        `${JSON.stringify(next, null, 2)}\n`,
+        {
+          encoding: 'utf8',
+          mode: 0o600,
+          flag: 'wx'
+        }
+      )
+      await rename(temporaryPath, this.filePath)
+    } finally {
+      await rm(temporaryPath, { force: true })
+    }
+    this.settings = next
+  }
+
   update(input: unknown): Promise<ApplicationSettings> {
     const operation = this.updateQueue.then(async () => {
       const updates = applicationSettingsUpdateSchema.parse(input)
@@ -187,25 +247,7 @@ export class ApplicationSettingsStore {
         ...updates,
         version: CURRENT_SETTINGS_VERSION
       }
-      await mkdir(dirname(this.filePath), { recursive: true })
-      const temporaryPath =
-        `${this.filePath}.${process.pid}.` +
-        `${randomBytes(6).toString('hex')}.tmp`
-      try {
-        await writeFile(
-          temporaryPath,
-          `${JSON.stringify(next, null, 2)}\n`,
-          {
-            encoding: 'utf8',
-            mode: 0o600,
-            flag: 'wx'
-          }
-        )
-        await rename(temporaryPath, this.filePath)
-      } finally {
-        await rm(temporaryPath, { force: true })
-      }
-      this.settings = next
+      await this.persist(next)
       return {
         checkUpdatesOnStartup: next.checkUpdatesOnStartup,
         magicNotesEnabled: next.magicNotesEnabled,
@@ -219,4 +261,24 @@ export class ApplicationSettingsStore {
     )
     return operation
   }
+
+  setLastSeenReleaseNotesVersion(version: unknown): Promise<void> {
+    const operation = this.updateQueue.then(async () => {
+      const parsedVersion = releaseVersionSchema.parse(version)
+      const current = await this.loadStored()
+      if (current.lastSeenReleaseNotesVersion === parsedVersion) {
+        return
+      }
+      await this.persist({
+        ...current,
+        version: CURRENT_SETTINGS_VERSION,
+        lastSeenReleaseNotesVersion: parsedVersion
+      })
+    })
+    this.updateQueue = operation.then(
+      () => undefined,
+      () => undefined
+    )
+    return operation
+  }
 }

src/main/index.ts

@@ -71,6 +71,7 @@ import { DocumentParsingSettingsStore } from './document-parsing-settings-store'
 import { DocumentOcrModelManager } from './document-ocr-model-manager'
 import { DocumentOcrBroker } from './document-ocr-broker'
 import { DocumentParsingService } from './document-parsing-service'
+import { ReleaseNotesService } from './release-notes-service'
 
 const shortcut = 'CommandOrControl+Shift+Space'
 const mainModuleDirectory = dirname(fileURLToPath(import.meta.url))
@@ -346,6 +347,13 @@ if (hasSingleInstanceLock) {
     const applicationSettingsStore = new ApplicationSettingsStore(
       join(app.getPath('userData'), 'application-settings.json')
     )
+    const releaseNotesService = new ReleaseNotesService({
+      currentVersion: app.getVersion(),
+      filePath: app.isPackaged
+        ? join(process.resourcesPath, 'release-notes.json')
+        : join(app.getAppPath(), 'resources', 'release-notes.json'),
+      settingsStore: applicationSettingsStore
+    })
     const documentParsingSettingsStore =
       new DocumentParsingSettingsStore(
         join(app.getPath('userData'), 'document-parsing-settings.json')
@@ -545,7 +553,8 @@ if (hasSingleInstanceLock) {
       launchWechatSidecar,
       documentParsingService,
       documentOcrModelManager,
-      documentOcrBroker
+      documentOcrBroker,
+      releaseNotesService
     )
     loadMainWindow(mainWindow)
 

src/main/ipc.ts

@@ -66,6 +66,7 @@ import {
   weComChannelSettingsInputSchema
 } from '../shared/channel-settings-contracts'
 import { applicationSettingsUpdateSchema } from '../shared/application-settings-contracts'
+import { releaseNotesAcknowledgeSchema } from '../shared/release-notes-contracts'
 import {
   speechModelActionInputSchema,
   speechModelSelectionInputSchema
@@ -189,6 +190,7 @@ import type { EmbeddingIndexCoordinator } from './knowledge/embedding-index-coor
 import type { DocumentParsingService } from './document-parsing-service'
 import type { DocumentOcrModelManager } from './document-ocr-model-manager'
 import type { DocumentOcrBroker } from './document-ocr-broker'
+import type { ReleaseNotesService } from './release-notes-service'
 import { OpenAIEmbeddingClient } from './knowledge/openai-embedding-client'
 import {
   magicNotePlainText,
@@ -600,7 +602,8 @@ export function registerIpcHandlers(
   launchWechatSidecar?: WechatSidecarLauncher,
   documentParsingService?: DocumentParsingService,
   documentOcrModelManager?: DocumentOcrModelManager,
-  documentOcrBroker?: DocumentOcrBroker
+  documentOcrBroker?: DocumentOcrBroker,
+  releaseNotesService?: ReleaseNotesService
 ): () => Promise<void> {
   const activeRequests = new Map<string, AbortController>()
   const pendingAgentQuestions = new Map<
@@ -2742,6 +2745,27 @@ export function registerIpcHandlers(
     await shell.openExternal(GOODBUDDY_RELEASES_URL)
   })
 
+  ipcMain.handle(ipcChannels.releaseNotesGetPending, (event) => {
+    assertTrustedSender(event, window)
+    if (!releaseNotesService) {
+      throw new Error('版本更新说明服务不可用')
+    }
+    return releaseNotesService.getPending()
+  })
+
+  ipcMain.handle(
+    ipcChannels.releaseNotesAcknowledge,
+    async (event, input: unknown) => {
+      assertTrustedSender(event, window)
+      if (!releaseNotesService) {
+        throw new Error('版本更新说明服务不可用')
+      }
+      await releaseNotesService.acknowledge(
+        releaseNotesAcknowledgeSchema.parse(input)
+      )
+    }
+  )
+
   const requireEmbeddingProvider = async (): Promise<OpenAIEmbeddingClient> => {
     const settings = await settingsStore.getResolvedSettings()
     if (!settings.knowledgeEmbeddingEnabled) {

src/main/release-notes-service.test.ts

@@ -0,0 +1,134 @@
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ApplicationSettingsStore } from './application-settings-store'
+import { ReleaseNotesService } from './release-notes-service'
+
+const temporaryDirectories: string[] = []
+
+const localizedNotes = (label: string) => ({
+  'zh-CN': {
+    features: [`${label} 功能`],
+    fixes: [`${label} 修复`]
+  },
+  'en-US': {
+    features: [`${label} feature`],
+    fixes: [`${label} fix`]
+  }
+})
+
+async function createService(
+  currentVersion: string
+): Promise<{
+  filePath: string
+  service: ReleaseNotesService
+  settingsStore: ApplicationSettingsStore
+}> {
+  const directory = await mkdtemp(join(tmpdir(), 'goodbuddy-release-notes-'))
+  temporaryDirectories.push(directory)
+  const filePath = join(directory, 'release-notes.json')
+  await writeFile(
+    filePath,
+    JSON.stringify({
+      formatVersion: 1,
+      releases: [
+        {
+          version: '0.8.12',
+          releasedAt: '2026-08-04',
+          notes: localizedNotes('0.8.12')
+        },
+        {
+          version: '0.8.18',
+          releasedAt: '2026-08-11',
+          notes: localizedNotes('0.8.18')
+        }
+      ]
+    }),
+    'utf8'
+  )
+  const settingsStore = new ApplicationSettingsStore(
+    join(directory, 'application-settings.json')
+  )
+  return {
+    filePath,
+    settingsStore,
+    service: new ReleaseNotesService({
+      currentVersion,
+      filePath,
+      settingsStore
+    })
+  }
+}
+
+afterEach(async () => {
+  await Promise.all(
+    temporaryDirectories.splice(0).map((directory) =>
+      rm(directory, { recursive: true, force: true })
+    )
+  )
+})
+
+describe('ReleaseNotesService', () => {
+  it('shows only the current release on a fresh installation', async () => {
+    const { service } = await createService('0.8.18')
+
+    await expect(service.getPending()).resolves.toMatchObject({
+      currentVersion: '0.8.18',
+      releases: [{ version: '0.8.18' }]
+    })
+  })
+
+  it('shows every unseen release through the current version', async () => {
+    const { service, settingsStore } = await createService('0.8.18')
+    await settingsStore.setLastSeenReleaseNotesVersion('0.8.11')
+
+    await expect(service.getPending()).resolves.toMatchObject({
+      releases: [{ version: '0.8.12' }, { version: '0.8.18' }]
+    })
+  })
+
+  it('persists acknowledgement and does not show the release again', async () => {
+    const { service, settingsStore } = await createService('0.8.18')
+
+    await service.acknowledge({ version: '0.8.18' })
+
+    await expect(service.getPending()).resolves.toEqual({
+      currentVersion: '0.8.18',
+      releases: []
+    })
+    await expect(
+      settingsStore.getLastSeenReleaseNotesVersion()
+    ).resolves.toBe('0.8.18')
+  })
+
+  it('rejects acknowledgement for another or unknown version', async () => {
+    const { service } = await createService('0.8.18')
+
+    await expect(
+      service.acknowledge({ version: '0.8.12' })
+    ).rejects.toThrow('Only the current release notes can be acknowledged')
+    await expect(
+      service.acknowledge({ version: '0.8.19' })
+    ).rejects.toThrow('Only the current release notes can be acknowledged')
+  })
+
+  it('does not reopen release notes after an application downgrade', async () => {
+    const { service, settingsStore } = await createService('0.8.12')
+    await settingsStore.setLastSeenReleaseNotesVersion('0.8.18')
+
+    await expect(service.getPending()).resolves.toEqual({
+      currentVersion: '0.8.12',
+      releases: []
+    })
+  })
+
+  it('rejects an oversized release-notes resource with a bounded read', async () => {
+    const { filePath, service } = await createService('0.8.18')
+    await writeFile(filePath, ' '.repeat(128 * 1024 + 1), 'utf8')
+
+    await expect(service.getPending()).rejects.toThrow(
+      'Release notes exceed the size limit'
+    )
+  })
+})

src/main/release-notes-service.ts

@@ -0,0 +1,93 @@
+import { open } from 'node:fs/promises'
+import {
+  releaseNotesAcknowledgeSchema,
+  releaseNotesFileSchema,
+  type ReleaseNote,
+  type ReleaseNotesSnapshot
+} from '../shared/release-notes-contracts'
+import type { ApplicationSettingsStore } from './application-settings-store'
+import { compareStrictSemVer } from './version-checker'
+
+const maximumReleaseNotesBytes = 128 * 1024
+
+export class ReleaseNotesService {
+  private releases?: ReleaseNote[]
+  private releaseLoad?: Promise<ReleaseNote[]>
+
+  constructor(
+    private readonly dependencies: {
+      currentVersion: string
+      filePath: string
+      settingsStore: ApplicationSettingsStore
+    }
+  ) {}
+
+  private async loadReleases(): Promise<ReleaseNote[]> {
+    if (this.releases) {
+      return this.releases
+    }
+    if (!this.releaseLoad) {
+      this.releaseLoad = this.readReleases().finally(() => {
+        this.releaseLoad = undefined
+      })
+    }
+    return this.releaseLoad
+  }
+
+  private async readReleases(): Promise<ReleaseNote[]> {
+    const handle = await open(this.dependencies.filePath, 'r')
+    try {
+      const buffer = Buffer.alloc(maximumReleaseNotesBytes + 1)
+      const { bytesRead } = await handle.read(buffer, 0, buffer.length, 0)
+      if (bytesRead > maximumReleaseNotesBytes) {
+        throw new Error('Release notes exceed the size limit')
+      }
+      const parsed = releaseNotesFileSchema.parse(
+        JSON.parse(buffer.toString('utf8', 0, bytesRead)) as unknown
+      )
+      this.releases = [...parsed.releases].sort((left, right) =>
+        compareStrictSemVer(left.version, right.version)
+      )
+      return this.releases
+    } finally {
+      await handle.close()
+    }
+  }
+
+  async getPending(): Promise<ReleaseNotesSnapshot> {
+    const releases = await this.loadReleases()
+    const currentVersion = this.dependencies.currentVersion
+    const lastSeenVersion =
+      await this.dependencies.settingsStore.getLastSeenReleaseNotesVersion()
+    const pending = releases.filter((release) => {
+      const comparedWithCurrent = compareStrictSemVer(
+        release.version,
+        currentVersion
+      )
+      if (comparedWithCurrent > 0) {
+        return false
+      }
+      return lastSeenVersion
+        ? compareStrictSemVer(release.version, lastSeenVersion) > 0
+        : comparedWithCurrent === 0
+    })
+    return {
+      currentVersion,
+      releases: pending
+    }
+  }
+
+  async acknowledge(input: unknown): Promise<void> {
+    const { version } = releaseNotesAcknowledgeSchema.parse(input)
+    if (version !== this.dependencies.currentVersion) {
+      throw new Error('Only the current release notes can be acknowledged')
+    }
+    const releases = await this.loadReleases()
+    if (!releases.some((release) => release.version === version)) {
+      throw new Error('Current release notes are unavailable')
+    }
+    await this.dependencies.settingsStore.setLastSeenReleaseNotesVersion(
+      version
+    )
+  }
+}

src/main/release-notes-source.test.ts

@@ -0,0 +1,28 @@
+import { readFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { releaseNotesFileSchema } from '../shared/release-notes-contracts'
+
+describe('packaged release notes', () => {
+  it('contains matching bounded Chinese and English content', async () => {
+    const source = JSON.parse(
+      await readFile(
+        join(process.cwd(), 'resources', 'release-notes.json'),
+        'utf8'
+      )
+    ) as unknown
+    const parsed = releaseNotesFileSchema.parse(source)
+
+    expect(parsed.releases).toContainEqual(
+      expect.objectContaining({ version: '0.8.18' })
+    )
+    for (const release of parsed.releases) {
+      expect(release.notes['zh-CN'].features).toHaveLength(
+        release.notes['en-US'].features.length
+      )
+      expect(release.notes['zh-CN'].fixes).toHaveLength(
+        release.notes['en-US'].fixes.length
+      )
+    }
+  })
+})

src/preload/index.ts

@@ -67,6 +67,7 @@ import type {
   ApplicationSettingsUpdate,
   VersionCheckResult
 } from '../shared/application-settings-contracts'
+import type { ReleaseNotesSnapshot } from '../shared/release-notes-contracts'
 import type {
   SpeechModelSnapshot,
   SpeechTranscriptionInput,
@@ -331,6 +332,18 @@ const desktopApi: DesktopApi = {
         ipcRenderer.removeListener(ipcChannels.versionCheckResult, handler)
     }
   },
+  releaseNotes: {
+    getPending: () =>
+      ipcRenderer.invoke(
+        ipcChannels.releaseNotesGetPending
+      ) as Promise<ReleaseNotesSnapshot>,
+    acknowledge: async (version: string) => {
+      await ipcRenderer.invoke(
+        ipcChannels.releaseNotesAcknowledge,
+        { version }
+      )
+    }
+  },
   speechModels: {
     getSnapshot: () =>
       ipcRenderer.invoke(

src/preload/preload-sandbox.test.ts

@@ -59,4 +59,16 @@ describe('sandboxed preload', () => {
     expect(source).toContain('contextFileSelectionProgress')
     expect(source).toContain('ipcRenderer.removeListener(')
   })
+
+  it('exposes only bounded release-note actions', () => {
+    const source = readFileSync(
+      join(process.cwd(), 'src', 'preload', 'index.ts'),
+      'utf8'
+    )
+    expect(source).toContain('releaseNotes: {')
+    expect(source).toContain('getPending:')
+    expect(source).toContain('acknowledge: async (version: string)')
+    expect(source).toContain('ipcChannels.releaseNotesGetPending')
+    expect(source).toContain('ipcChannels.releaseNotesAcknowledge')
+  })
 })

src/renderer/src/App.test.tsx

@@ -799,6 +799,51 @@ describe('App', () => {
     }
   })
 
+  it('shows and acknowledges pending release notes on startup', async () => {
+    const acknowledge = vi.fn(async () => {})
+    api.releaseNotes = {
+      getPending: vi.fn(async () => ({
+        currentVersion: '0.8.18',
+        releases: [
+          {
+            version: '0.8.18',
+            releasedAt: '2026-08-11',
+            notes: {
+              'zh-CN': {
+                features: ['新增版本更新说明'],
+                fixes: ['修复重复显示']
+              },
+              'en-US': {
+                features: ['Added release notes'],
+                fixes: ['Fixed repeated display']
+              }
+            }
+          }
+        ]
+      })),
+      acknowledge
+    }
+    try {
+      render(<App />)
+
+      expect(
+        await screen.findByRole('dialog', {
+          name: 'GoodBuddy 0.8.18 更新内容'
+        })
+      ).toBeInTheDocument()
+      fireEvent.click(screen.getByRole('button', { name: '开始使用' }))
+
+      await waitFor(() =>
+        expect(acknowledge).toHaveBeenCalledWith('0.8.18')
+      )
+      await waitFor(() =>
+        expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+      )
+    } finally {
+      delete api.releaseNotes
+    }
+  })
+
   it('does not disturb startup when updates are current or offline', async () => {
     const currentResult = {
       updateAvailable: false,

src/renderer/src/App.tsx

@@ -143,6 +143,8 @@ import type {
   AppNotificationInput,
   AppNotificationTone
 } from './notifications'
+import type { ReleaseNotesSnapshot } from '../../shared/release-notes-contracts'
+import { ReleaseNotesDialog } from './ReleaseNotesDialog'
 
 type AppNotification = {
   id: string
@@ -1340,6 +1342,9 @@ function App(): React.JSX.Element {
   const voiceStartingRef = useRef(false)
   const voiceDisposedRef = useRef(false)
   const startupUpdateCheckStartedRef = useRef(false)
+  const startupReleaseNotesStartedRef = useRef(false)
+  const [releaseNotes, setReleaseNotes] =
+    useState<ReleaseNotesSnapshot>()
   const [runtime, setRuntime] = useState<AgentRuntimeStatus>()
   const [runtimeStatusKey, setRuntimeStatusKey] = useState('')
   const [runtimeSettings, setRuntimeSettings] = useState<RuntimeSettings>()
@@ -1643,6 +1648,22 @@ function App(): React.JSX.Element {
       .catch(() => undefined)
   }, [i18n])
 
+  useEffect(() => {
+    const releaseNotesApi = window.goodbuddy.releaseNotes
+    if (!releaseNotesApi || startupReleaseNotesStartedRef.current) {
+      return
+    }
+    startupReleaseNotesStartedRef.current = true
+    void releaseNotesApi
+      .getPending()
+      .then((snapshot) => {
+        if (snapshot.releases.length > 0) {
+          setReleaseNotes(snapshot)
+        }
+      })
+      .catch(() => undefined)
+  }, [])
+
   useEffect(() => {
     applyAppearanceTheme(resolvedAppearanceTheme)
   }, [resolvedAppearanceTheme])
@@ -6544,6 +6565,20 @@ function App(): React.JSX.Element {
         dispatch={notify}
         notifications={notifications}
       />
+      {releaseNotes && (
+        <ReleaseNotesDialog
+          locale={locale}
+          onAcknowledge={async (version) => {
+            const releaseNotesApi = window.goodbuddy.releaseNotes
+            if (!releaseNotesApi) {
+              throw new Error('Release notes service is unavailable')
+            }
+            await releaseNotesApi.acknowledge(version)
+          }}
+          onClose={() => setReleaseNotes(undefined)}
+          snapshot={releaseNotes}
+        />
+      )}
       {imageViewerItem && (
         <div
           className="image-viewer-backdrop"

src/renderer/src/ReleaseNotesDialog.test.tsx

@@ -0,0 +1,125 @@
+import {
+  cleanup,
+  fireEvent,
+  render,
+  screen,
+  waitFor
+} from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { useState } from 'react'
+import type { ReleaseNotesSnapshot } from '../../shared/release-notes-contracts'
+import { changeUiLocale } from './i18n'
+import { ReleaseNotesDialog } from './ReleaseNotesDialog'
+
+const snapshot: ReleaseNotesSnapshot = {
+  currentVersion: '0.8.18',
+  releases: [
+    {
+      version: '0.8.18',
+      releasedAt: '2026-08-11',
+      notes: {
+        'zh-CN': {
+          features: ['新增双语界面'],
+          fixes: ['修复开关尺寸']
+        },
+        'en-US': {
+          features: ['Added a bilingual interface'],
+          fixes: ['Fixed switch dimensions']
+        }
+      }
+    }
+  ]
+}
+
+function Harness({
+  acknowledge,
+  locale = 'zh-CN'
+}: {
+  acknowledge: (version: string) => Promise<void>
+  locale?: 'zh-CN' | 'en-US'
+}): React.JSX.Element {
+  const [open, setOpen] = useState(true)
+  return (
+    <>
+      <div className="app-shell">
+        <button type="button">Background</button>
+      </div>
+      {open && (
+        <ReleaseNotesDialog
+          locale={locale}
+          onAcknowledge={acknowledge}
+          onClose={() => setOpen(false)}
+          snapshot={snapshot}
+        />
+      )}
+    </>
+  )
+}
+
+afterEach(async () => {
+  cleanup()
+  await changeUiLocale('zh-CN')
+})
+
+describe('ReleaseNotesDialog', () => {
+  it('shows localized notes once and acknowledges before closing', async () => {
+    const acknowledge = vi.fn(async () => {})
+    const { container } = render(<Harness acknowledge={acknowledge} />)
+
+    expect(
+      screen.getByRole('dialog', {
+        name: 'GoodBuddy 0.8.18 更新内容'
+      })
+    ).toBeInTheDocument()
+    expect(screen.getByText('新增双语界面')).toBeInTheDocument()
+    expect(screen.getByText('修复开关尺寸')).toBeInTheDocument()
+    expect(screen.queryByRole('link')).not.toBeInTheDocument()
+    expect(
+      container.querySelector<HTMLElement>('.app-shell')?.inert
+    ).toBe(true)
+
+    fireEvent.click(screen.getByRole('button', { name: '开始使用' }))
+
+    await waitFor(() =>
+      expect(acknowledge).toHaveBeenCalledWith('0.8.18')
+    )
+    await waitFor(() =>
+      expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+    )
+    expect(
+      container.querySelector<HTMLElement>('.app-shell')?.inert
+    ).toBe(false)
+  })
+
+  it('keeps the dialog open when acknowledgement fails', async () => {
+    const acknowledge = vi.fn(async () => {
+      throw new Error('disk failed')
+    })
+    render(<Harness acknowledge={acknowledge} />)
+
+    fireEvent.keyDown(screen.getByRole('dialog'), { key: 'Escape' })
+
+    expect(
+      await screen.findByRole('alert')
+    ).toHaveTextContent('无法保存已读状态，请重试。')
+    expect(screen.getByRole('dialog')).toBeInTheDocument()
+  })
+
+  it('renders the approved English release notes', async () => {
+    await changeUiLocale('en-US')
+    render(<Harness acknowledge={vi.fn(async () => {})} locale="en-US" />)
+
+    expect(
+      screen.getByRole('dialog', {
+        name: "What's New in GoodBuddy 0.8.18"
+      })
+    ).toBeInTheDocument()
+    expect(
+      screen.getByText('Added a bilingual interface')
+    ).toBeInTheDocument()
+    expect(screen.getByText('Fixed switch dimensions')).toBeInTheDocument()
+    expect(
+      screen.getByRole('button', { name: 'Get Started' })
+    ).toBeInTheDocument()
+  })
+})

src/renderer/src/ReleaseNotesDialog.tsx

@@ -0,0 +1,190 @@
+import { Sparkles, Wrench, X } from 'lucide-react'
+import { useEffect, useId, useRef, useState } from 'react'
+import { createPortal } from 'react-dom'
+import { useTranslation } from 'react-i18next'
+import type {
+  ReleaseNote,
+  ReleaseNotesSnapshot
+} from '../../shared/release-notes-contracts'
+import { trapTabFocus } from './dialog-focus'
+import type { UiLocale } from './i18n'
+
+type ReleaseNotesDialogProps = {
+  locale: UiLocale
+  snapshot: ReleaseNotesSnapshot
+  onAcknowledge: (version: string) => Promise<void>
+  onClose: () => void
+}
+
+function ReleaseSection({
+  locale,
+  release,
+  showVersion
+}: {
+  locale: UiLocale
+  release: ReleaseNote
+  showVersion: boolean
+}): React.JSX.Element {
+  const { t } = useTranslation('app')
+  const notes = release.notes[locale]
+  const releaseHeadingId = useId()
+  const SectionHeading = showVersion ? 'h4' : 'h3'
+  return (
+    <section
+      aria-labelledby={showVersion ? releaseHeadingId : undefined}
+      className="release-notes-dialog__release"
+    >
+      {showVersion && (
+        <h3
+          className="release-notes-dialog__version"
+          id={releaseHeadingId}
+        >
+          GoodBuddy {release.version}
+        </h3>
+      )}
+      {notes.features.length > 0 && (
+        <div className="release-notes-dialog__section">
+          <SectionHeading>
+            <Sparkles aria-hidden="true" size={16} />
+            {t('releaseNotes.features')}
+          </SectionHeading>
+          <ul>
+            {notes.features.map((feature) => (
+              <li key={feature}>{feature}</li>
+            ))}
+          </ul>
+        </div>
+      )}
+      {notes.fixes.length > 0 && (
+        <div className="release-notes-dialog__section">
+          <SectionHeading>
+            <Wrench aria-hidden="true" size={16} />
+            {t('releaseNotes.fixes')}
+          </SectionHeading>
+          <ul>
+            {notes.fixes.map((fix) => (
+              <li key={fix}>{fix}</li>
+            ))}
+          </ul>
+        </div>
+      )}
+    </section>
+  )
+}
+
+export function ReleaseNotesDialog({
+  locale,
+  snapshot,
+  onAcknowledge,
+  onClose
+}: ReleaseNotesDialogProps): React.JSX.Element {
+  const { t } = useTranslation('app')
+  const dialogRef = useRef<HTMLElement>(null)
+  const restoreFocusRef = useRef<HTMLElement | null>(null)
+  const [closing, setClosing] = useState(false)
+  const [error, setError] = useState<string>()
+  const titleId = useId()
+  const descriptionId = useId()
+
+  useEffect(() => {
+    restoreFocusRef.current =
+      document.activeElement instanceof HTMLElement
+        ? document.activeElement
+        : null
+    const appShell = document.querySelector<HTMLElement>('.app-shell')
+    const wasInert = appShell?.inert ?? false
+    if (appShell) {
+      appShell.inert = true
+    }
+    return () => {
+      if (appShell) {
+        appShell.inert = wasInert
+      }
+      restoreFocusRef.current?.focus()
+    }
+  }, [])
+
+  const close = async (): Promise<void> => {
+    if (closing) {
+      return
+    }
+    setClosing(true)
+    setError(undefined)
+    try {
+      await onAcknowledge(snapshot.currentVersion)
+      onClose()
+    } catch {
+      setError(t('releaseNotes.acknowledgeFailed'))
+      setClosing(false)
+    }
+  }
+
+  return createPortal(
+    <div className="release-notes-backdrop">
+      <section
+        aria-describedby={descriptionId}
+        aria-labelledby={titleId}
+        aria-modal="true"
+        className="release-notes-dialog"
+        onKeyDown={(event) => {
+          if (event.key === 'Escape' && !closing) {
+            event.preventDefault()
+            void close()
+            return
+          }
+          trapTabFocus(event, dialogRef.current)
+        }}
+        ref={dialogRef}
+        role="dialog"
+      >
+        <header className="release-notes-dialog__header">
+          <div>
+            <span className="release-notes-dialog__eyebrow">
+              {t('releaseNotes.eyebrow')}
+            </span>
+            <h2 id={titleId}>
+              {t('releaseNotes.title', {
+                version: snapshot.currentVersion
+              })}
+            </h2>
+            <p id={descriptionId}>{t('releaseNotes.description')}</p>
+          </div>
+          <button
+            aria-label={t('releaseNotes.close')}
+            className="icon-button"
+            disabled={closing}
+            onClick={() => void close()}
+            type="button"
+          >
+            <X aria-hidden="true" size={16} />
+          </button>
+        </header>
+        <div className="release-notes-dialog__content">
+          {snapshot.releases.map((release) => (
+            <ReleaseSection
+              key={release.version}
+              locale={locale}
+              release={release}
+              showVersion={snapshot.releases.length > 1}
+            />
+          ))}
+        </div>
+        <footer className="release-notes-dialog__footer">
+          {error && <p role="alert">{error}</p>}
+          <button
+            autoFocus
+            className="primary-button"
+            disabled={closing}
+            onClick={() => void close()}
+            type="button"
+          >
+            {closing
+              ? t('releaseNotes.closing')
+              : t('releaseNotes.start')}
+          </button>
+        </footer>
+      </section>
+    </div>,
+    document.body
+  )
+}

src/renderer/src/i18n/locales/en-US/app.ts

@@ -9,6 +9,18 @@ export const app = {
     close: 'Close notification',
     viewport: 'App notifications'
   },
+  releaseNotes: {
+    eyebrow: 'VERSION UPDATE',
+    title: "What's New in GoodBuddy {{version}}",
+    description:
+      'This release includes the following features and bug fixes.',
+    features: 'Features',
+    fixes: 'Bug Fixes',
+    close: 'Close release notes',
+    start: 'Get Started',
+    closing: 'Closing…',
+    acknowledgeFailed: 'Could not save the read state. Please try again.'
+  },
   window: {
     minimizeAria: 'Minimize window',
     minimize: 'Minimize',

src/renderer/src/i18n/locales/zh-CN/app.ts

@@ -6,6 +6,17 @@ export const app = {
     close: '关闭通知',
     viewport: '应用通知'
   },
+  releaseNotes: {
+    eyebrow: '版本更新',
+    title: 'GoodBuddy {{version}} 更新内容',
+    description: '本次版本带来了以下功能更新与问题修复。',
+    features: '功能更新',
+    fixes: '问题修复',
+    close: '关闭版本更新说明',
+    start: '开始使用',
+    closing: '正在关闭…',
+    acknowledgeFailed: '无法保存已读状态，请重试。'
+  },
   window: {
     minimizeAria: '最小化窗口',
     minimize: '最小化',

src/renderer/src/styles.css

@@ -3585,6 +3585,141 @@ button > svg * {
   object-fit: contain;
 }
 
+.release-notes-backdrop {
+  position: fixed;
+  z-index: 90;
+  display: grid;
+  padding: var(--space-4);
+  background: var(--overlay-backdrop);
+  inset: 38px 0 0;
+  place-items: center;
+}
+
+.release-notes-dialog {
+  display: grid;
+  width: min(680px, 100%);
+  max-height: calc(100vh - 70px);
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-card);
+  overflow: hidden;
+  background: var(--surface-raised);
+  box-shadow: var(--shadow-dialog);
+  grid-template-rows: auto minmax(0, 1fr) auto;
+}
+
+.release-notes-dialog__header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  padding: var(--space-6);
+  border-bottom: 1px solid var(--border-subtle);
+  gap: var(--space-4);
+}
+
+.release-notes-dialog__header > div {
+  min-width: 0;
+}
+
+.release-notes-dialog__eyebrow {
+  display: block;
+  margin-bottom: var(--space-2);
+  color: var(--accent);
+  font-size: var(--font-caption);
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.release-notes-dialog__header h2 {
+  margin: 0;
+  color: var(--text-primary);
+  font-size: var(--font-page-title);
+  line-height: 1.25;
+}
+
+.release-notes-dialog__header p {
+  margin: var(--space-2) 0 0;
+  color: var(--text-secondary);
+  font-size: var(--font-body);
+  line-height: 1.55;
+}
+
+.release-notes-dialog__content {
+  min-height: 0;
+  padding: var(--space-6);
+  overflow-y: auto;
+}
+
+.release-notes-dialog__release {
+  display: grid;
+  gap: var(--space-6);
+}
+
+.release-notes-dialog__release + .release-notes-dialog__release {
+  padding-top: var(--space-6);
+  margin-top: var(--space-6);
+  border-top: 1px solid var(--border-default);
+}
+
+.release-notes-dialog__version {
+  margin: 0;
+  color: var(--text-primary);
+  font-size: var(--font-section-title);
+}
+
+.release-notes-dialog__section {
+  display: grid;
+  gap: var(--space-3);
+}
+
+.release-notes-dialog__section :is(h3, h4) {
+  display: flex;
+  align-items: center;
+  margin: 0;
+  color: var(--text-primary);
+  font-size: var(--font-section-title);
+  gap: var(--space-2);
+}
+
+.release-notes-dialog__section :is(h3, h4) svg {
+  color: var(--accent);
+  flex: 0 0 auto;
+}
+
+.release-notes-dialog__section ul {
+  display: grid;
+  padding-left: var(--space-6);
+  margin: 0;
+  color: var(--text-secondary);
+  font-size: var(--font-body);
+  gap: var(--space-2);
+  line-height: 1.6;
+}
+
+.release-notes-dialog__section li::marker {
+  color: var(--accent);
+}
+
+.release-notes-dialog__footer {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  padding: var(--space-4) var(--space-6);
+  border-top: 1px solid var(--border-subtle);
+  background: var(--surface-subtle);
+  gap: var(--space-4);
+}
+
+.release-notes-dialog__footer p {
+  margin: 0 auto 0 0;
+  color: var(--danger);
+  font-size: var(--font-caption);
+}
+
+.release-notes-dialog__footer .primary-button {
+  min-width: 104px;
+}
+
 .composer:focus-within {
   border-color: var(--accent);
   box-shadow:
@@ -9189,6 +9324,29 @@ details.settings-section > :not(summary) + :not(summary) {
 }
 
 @media (max-width: 720px) {
+  .release-notes-backdrop {
+    padding: var(--space-4);
+  }
+
+  .release-notes-dialog {
+    max-height: calc(100vh - 70px);
+  }
+
+  .release-notes-dialog__header,
+  .release-notes-dialog__content {
+    padding: var(--space-4);
+  }
+
+  .release-notes-dialog__footer {
+    align-items: stretch;
+    padding: var(--space-4);
+    flex-direction: column;
+  }
+
+  .release-notes-dialog__footer .primary-button {
+    width: 100%;
+  }
+
   .workspace-panel-scroll {
     padding: var(--page-gutter);
   }

src/shared/contracts.ts

@@ -65,6 +65,7 @@ import type {
   ApplicationSettingsUpdate,
   VersionCheckResult
 } from './application-settings-contracts'
+import type { ReleaseNotesSnapshot } from './release-notes-contracts'
 import type {
   SpeechModelSnapshot,
   SpeechTranscriptionInput,
@@ -1049,6 +1050,10 @@ export type DesktopApi = {
       listener: (result: VersionCheckResult) => void
     ) => () => void
   }
+  releaseNotes?: {
+    getPending: () => Promise<ReleaseNotesSnapshot>
+    acknowledge: (version: string) => Promise<void>
+  }
   speechModels?: {
     getSnapshot: () => Promise<SpeechModelSnapshot>
     install: (modelId: string) => Promise<SpeechModelSnapshot>

src/shared/ipc-channels.ts

@@ -43,6 +43,8 @@ export const ipcChannels = {
   versionCheck: 'application:update:check',
   versionOpenReleasePage: 'application:update:open-release-page',
   versionCheckResult: 'application:update:result',
+  releaseNotesGetPending: 'application:release-notes:get-pending',
+  releaseNotesAcknowledge: 'application:release-notes:acknowledge',
   speechModelsGet: 'settings:speech-models:get',
   speechModelsInstall: 'settings:speech-models:install',
   speechModelsCancel: 'settings:speech-models:cancel',

src/shared/release-notes-contracts.ts

@@ -0,0 +1,77 @@
+import { z } from 'zod'
+
+export const releaseVersionSchema = z
+  .string()
+  .regex(
+    /^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)$/,
+    'Release version must be a stable semantic version'
+  )
+
+const localizedReleaseNotesSchema = z
+  .object({
+    features: z.array(z.string().trim().min(1).max(240)).max(20),
+    fixes: z.array(z.string().trim().min(1).max(240)).max(20)
+  })
+  .strict()
+  .refine(
+    (notes) => notes.features.length > 0 || notes.fixes.length > 0,
+    'Release notes must contain at least one item'
+  )
+
+export const releaseNoteSchema = z
+  .object({
+    version: releaseVersionSchema,
+    releasedAt: z.iso.date(),
+    notes: z
+      .object({
+        'zh-CN': localizedReleaseNotesSchema,
+        'en-US': localizedReleaseNotesSchema
+      })
+      .strict()
+  })
+  .strict()
+
+export const releaseNotesFileSchema = z
+  .object({
+    formatVersion: z.literal(1),
+    releases: z.array(releaseNoteSchema).min(1).max(100)
+  })
+  .strict()
+  .superRefine((value, context) => {
+    const versions = new Set<string>()
+    for (const [index, release] of value.releases.entries()) {
+      if (versions.has(release.version)) {
+        context.addIssue({
+          code: 'custom',
+          message: `Duplicate release version: ${release.version}`,
+          path: ['releases', index, 'version']
+        })
+      }
+      versions.add(release.version)
+      if (
+        release.notes['zh-CN'].features.length !==
+          release.notes['en-US'].features.length ||
+        release.notes['zh-CN'].fixes.length !==
+          release.notes['en-US'].fixes.length
+      ) {
+        context.addIssue({
+          code: 'custom',
+          message: 'Localized release-note sections must have matching counts',
+          path: ['releases', index, 'notes']
+        })
+      }
+    }
+  })
+
+export const releaseNotesAcknowledgeSchema = z
+  .object({
+    version: releaseVersionSchema
+  })
+  .strict()
+
+export type ReleaseNote = z.infer<typeof releaseNoteSchema>
+
+export type ReleaseNotesSnapshot = {
+  currentVersion: string
+  releases: ReleaseNote[]
+}

tests/build-release.test.ts

@@ -123,6 +123,7 @@ function portableDirectory(parent: string): string {
   for (const [path, content] of [
     ['GoodBuddy.exe', 'MZ'],
     ['resources/app.asar', 'asar'],
+    ['resources/release-notes.json', '{}'],
     ['resources/icon.ico', 'icon'],
     ['resources/tray-icon.png', 'tray'],
     ['resources/runtimes/opencode/opencode.exe', 'MZ'],