diff --git a/vscode/src/extension.ts b/vscode/src/extension.ts
index 74fdc28..3e5aad9 100644
--- a/vscode/src/extension.ts
+++ b/vscode/src/extension.ts
@@ -11,6 +11,7 @@ import { setProfilesDirOverride } from './cc/profiles'
 import { registerCodeReader } from './codeReader'
 import { logger } from './logging/logger'
 import { KanbanWebviewPanel } from './panel/KanbanPanel'
+import { offerPromptUpdates } from './settings/promptUpdate'
 import { getSettings, migratePromptTemplates, persistSeededProfiles } from './settings/store'
 import { registerCreateSessionUriHandler } from './uri/createSessionUriHandler'
 import { webhookCoordinator } from './webhook/coordinator'
@@ -43,6 +44,7 @@ export function activate(context: ExtensionContext): SuperpowersApi {
   // 存量提示词先迁到 Handlebars，再让 persistSeededProfiles 在迁移结果上补 seed。
   for (const note of migratePromptTemplates(context))
     logger.add({ level: note.level, source: 'settings', message: note.message })
+  void offerPromptUpdates(context)
   void persistSeededProfiles(context)
   // Start the webhook server immediately so PR callbacks are received even
   // when the Kanban panel is closed. Disposed automatically via subscriptions.
diff --git a/vscode/src/settings/promptMigration.test.ts b/vscode/src/settings/promptMigration.test.ts
index 691d1cb..4962a41 100644
--- a/vscode/src/settings/promptMigration.test.ts
+++ b/vscode/src/settings/promptMigration.test.ts
@@ -4,10 +4,8 @@ import { describe, expect, it } from 'vitest'
 import { PREVIOUS_DEFAULT_REVIEW_PROMPT } from './previousReviewPrompt'
 import {
   composeBrainstormTemplate,
-  planDefaultPromptReplacement,
   planPromptMigration,
   planReviewPromptMigration,
-  PREVIOUS_PROTOTYPE_PROMPTS,
   PROMPT_TEMPLATE_VERSION,
   splitIfBlock,
   upgradePlaceholders,
@@ -191,15 +189,3 @@ describe('planReviewPromptMigration', () => {
     expect(planReviewPromptMigration(undefined, PREVIOUS_DEFAULT_REVIEW_PROMPT, nextDefault)).toBeNull()
   })
 })
-
-describe('planDefaultPromptReplacement', () => {
-  it('旧的 Figma 插件提示词换成通用技能', () => {
-    const next = '/ecc:ui-prototyping 给 {{issueNumber}} 号工单画原型。\n'
-    const out = planDefaultPromptReplacement(PREVIOUS_PROTOTYPE_PROMPTS[0], PREVIOUS_PROTOTYPE_PROMPTS, next, '已换成通用技能')
-    expect(out?.prompt).toBe(next)
-  })
-
-  it('改过的提示词不动', () => {
-    expect(planDefaultPromptReplacement('我自己写的原型提示词', PREVIOUS_PROTOTYPE_PROMPTS, '新的', '已换')).toBeNull()
-  })
-})
diff --git a/vscode/src/settings/promptMigration.ts b/vscode/src/settings/promptMigration.ts
index 0b7edcb..8f33d2f 100644
--- a/vscode/src/settings/promptMigration.ts
+++ b/vscode/src/settings/promptMigration.ts
@@ -237,31 +237,3 @@ export function planReviewPromptMigration(
     notes: [{ level: 'info', message: '审查提示词末尾已追加「审查结论」，其余段落未改' }],
   }
 }
-
-/** 存的提示词和旧默认一样时，整段换成新默认。改过的不动。 */
-export function planDefaultPromptReplacement(
-  stored: unknown,
-  previousDefaults: string[],
-  nextDefault: string,
-  note: string,
-): { prompt: string, notes: MigrationNote[] } | null {
-  if (typeof stored !== 'string' || stored.length === 0)
-    return null
-  const now = normalizePrompt(stored)
-  const next = normalizePrompt(nextDefault)
-  if (!next || now === next)
-    return null
-  if (!previousDefaults.some(prev => normalizePrompt(prev) === now))
-    return null
-  return {
-    prompt: nextDefault.endsWith('\n') ? nextDefault : `${nextDefault}\n`,
-    notes: [{ level: 'info', message: note }],
-  }
-}
-
-export const PREVIOUS_PROTOTYPE_PROMPTS = [
-  '/ecc:figma-plugin-prototyping 给 {{issueNumber}} 号工单画原型：先读工单正文锁定要画的界面和状态，再写本地 Figma 插件把画板和点击流做出来。画完汇报插件路径和怎么导入，不要改业务代码。',
-  `/ecc:figma-plugin-prototyping 给 {{issueNumber}} 号工单画原型：先读工单正文锁定要画的界面和状态，再写本地 Figma 插件把画板和点击流做出来。画完汇报插件路径和怎么导入，不要改业务代码。
-
-画完用 \`opencli spx issue marker --issue {{issueNumber}} --type prototype --value <manifest.json 的仓库相对路径>\` 把原型插件挂到工单上，再汇报。`,
-]
diff --git a/vscode/src/settings/promptUpdate.test.ts b/vscode/src/settings/promptUpdate.test.ts
new file mode 100644
index 0000000..4f77d44
--- /dev/null
+++ b/vscode/src/settings/promptUpdate.test.ts
@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest'
+import { promptDigest, promptUpdatesToAsk } from './promptUpdatePlan'
+
+describe('promptUpdatesToAsk', () => {
+  it('和自带的不一样就问', () => {
+    const next = '新版原型提示词'
+    const out = promptUpdatesToAsk({
+      stored: { prototypePrompt: '旧的 Figma 插件提示词' },
+      defaults: { prototypePrompt: next },
+      decided: {},
+    })
+    expect(out).toEqual([{
+      key: 'prototypePrompt',
+      label: '原型提示词',
+      next,
+      hash: promptDigest(next),
+    }])
+  })
+
+  it('空的、一样的、这一版已经选过的不问', () => {
+    const next = '新版'
+    expect(promptUpdatesToAsk({
+      stored: { testPrompt: '' },
+      defaults: { testPrompt: next },
+      decided: {},
+    })).toEqual([])
+    expect(promptUpdatesToAsk({
+      stored: { testPrompt: next },
+      defaults: { testPrompt: `${next}\n` },
+      decided: {},
+    })).toEqual([])
+    expect(promptUpdatesToAsk({
+      stored: { testPrompt: '我改过' },
+      defaults: { testPrompt: next },
+      decided: { testPrompt: promptDigest(next) },
+    })).toEqual([])
+  })
+})
diff --git a/vscode/src/settings/promptUpdate.ts b/vscode/src/settings/promptUpdate.ts
new file mode 100644
index 0000000..bad5e0e
--- /dev/null
+++ b/vscode/src/settings/promptUpdate.ts
@@ -0,0 +1,45 @@
+import type { ExtensionContext } from 'vscode'
+import type { PromptUpdateKey } from './promptUpdatePlan'
+import { window } from 'vscode'
+import { PROMPT_UPDATE_FIELDS, promptUpdatesToAsk } from './promptUpdatePlan'
+import { readDefaultPrompt, readStoredSettings, saveSettings } from './store'
+
+function decisionsOf(stored: Record<string, unknown>): Record<string, string> {
+  const raw = stored.promptDefaultChoices
+  if (!raw || typeof raw !== 'object' || Array.isArray(raw))
+    return {}
+  const out: Record<string, string> = {}
+  for (const [key, value] of Object.entries(raw)) {
+    if (typeof value === 'string')
+      out[key] = value
+  }
+  return out
+}
+
+/** 自带提示词和设置里的不一样时问一句。选过的同一版不再问。 */
+export async function offerPromptUpdates(ctx: ExtensionContext): Promise<void> {
+  const stored = readStoredSettings(ctx) as Record<string, unknown>
+  const defaults = Object.fromEntries(
+    PROMPT_UPDATE_FIELDS.map(field => [field.key, readDefaultPrompt(ctx.extensionPath, field.file)]),
+  ) as Partial<Record<PromptUpdateKey, string>>
+  const pending = promptUpdatesToAsk({ stored, defaults, decided: decisionsOf(stored) })
+  if (pending.length === 0)
+    return
+  const choices = { ...decisionsOf(stored) }
+  const patch: Record<string, string> = {}
+  for (const item of pending) {
+    const pick = await window.showInformationMessage(
+      `${item.label}和这一版自带的不一样。要换成新版吗？`,
+      '使用新版',
+      '保留现有',
+    )
+    if (pick !== '使用新版' && pick !== '保留现有')
+      continue
+    choices[item.key] = item.hash
+    if (pick === '使用新版')
+      patch[item.key] = item.next
+  }
+  if (Object.keys(patch).length === 0 && Object.keys(choices).length === Object.keys(decisionsOf(stored)).length)
+    return
+  await saveSettings(ctx, { ...patch, promptDefaultChoices: choices })
+}
diff --git a/vscode/src/settings/promptUpdatePlan.ts b/vscode/src/settings/promptUpdatePlan.ts
new file mode 100644
index 0000000..299005a
--- /dev/null
+++ b/vscode/src/settings/promptUpdatePlan.ts
@@ -0,0 +1,46 @@
+import { createHash } from 'node:crypto'
+
+export const PROMPT_UPDATE_FIELDS = [
+  { key: 'brainstormPrompt', file: 'brainstorm', label: '头脑风暴提示词' },
+  { key: 'implementPlanPrompt', file: 'implement-plan', label: '实施提示词' },
+  { key: 'reviewPrompt', file: 'review', label: '审查提示词' },
+  { key: 'testPrompt', file: 'test', label: '测试提示词' },
+  { key: 'prototypePrompt', file: 'prototype', label: '原型提示词' },
+] as const
+
+export type PromptUpdateKey = typeof PROMPT_UPDATE_FIELDS[number]['key']
+
+export interface PromptUpdateCandidate {
+  key: PromptUpdateKey
+  label: string
+  next: string
+  hash: string
+}
+
+export function promptDigest(text: string): string {
+  return createHash('sha256').update(text.replace(/\r\n/g, '\n').trim()).digest('hex')
+}
+
+/** 设置里有内容，且和这一版自带的不一样，并且这一版还没问过。 */
+export function promptUpdatesToAsk(opts: {
+  stored: Record<string, unknown>
+  defaults: Partial<Record<PromptUpdateKey, string>>
+  decided: Record<string, string>
+}): PromptUpdateCandidate[] {
+  const out: PromptUpdateCandidate[] = []
+  for (const field of PROMPT_UPDATE_FIELDS) {
+    const saved = opts.stored[field.key]
+    const next = opts.defaults[field.key]
+    if (typeof saved !== 'string' || saved.trim() === '')
+      continue
+    if (typeof next !== 'string' || next.trim() === '')
+      continue
+    if (promptDigest(saved) === promptDigest(next))
+      continue
+    const hash = promptDigest(next)
+    if (opts.decided[field.key] === hash)
+      continue
+    out.push({ key: field.key, label: field.label, next, hash })
+  }
+  return out
+}
diff --git a/vscode/src/settings/store.ts b/vscode/src/settings/store.ts
index f436b38..5f9edfe 100644
--- a/vscode/src/settings/store.ts
+++ b/vscode/src/settings/store.ts
@@ -19,7 +19,7 @@ import { seedCommitProfilePath } from '../cc/commitProfile'
 import { listClaudeProfiles } from '../cc/profiles'
 import { normalizeReleasePrefix } from '../git/release'
 import { PREVIOUS_DEFAULT_REVIEW_PROMPT } from './previousReviewPrompt'
-import { planDefaultPromptReplacement, planPromptMigration, planReviewPromptMigration, PREVIOUS_PROTOTYPE_PROMPTS } from './promptMigration'
+import { planPromptMigration, planReviewPromptMigration } from './promptMigration'
 
 /**
  * Fallback prompt strings used when the on-disk markdown can't be read.
@@ -101,6 +101,11 @@ export interface Settings {
   testPrompt: string
   /** 原型会话首个提示词模板；常用 `{{issueNumber}}`。 */
   prototypePrompt: string
+  /**
+   * 某一版自带提示词用户已经选过「使用新版」或「保留现有」。
+   * 键是提示词字段，值是那一版自带正文的摘要。正文再变就再问。
+   */
+  promptDefaultChoices?: Record<string, string>
   /** Day-to-day development branch (e.g. `main`). Jenkins doesn't watch it. */
   devBranch: string
   /**
@@ -524,17 +529,9 @@ export function migratePromptTemplates(ctx: ExtensionContext): MigrationNote[] {
     PREVIOUS_DEFAULT_REVIEW_PROMPT,
     readDefaultPrompt(ctx.extensionPath, 'review'),
   )
-  let blob = review
+  const blob = review
     ? { ...(planned.blob ?? stored), reviewPrompt: review.prompt }
     : planned.blob
-  const prototype = planDefaultPromptReplacement(
-    (blob ?? stored).prototypePrompt,
-    PREVIOUS_PROTOTYPE_PROMPTS,
-    readDefaultPrompt(ctx.extensionPath, 'prototype'),
-    '原型提示词还是旧的 Figma 插件技能，已换成通用的 ui-prototyping',
-  )
-  if (prototype)
-    blob = { ...(blob ?? stored), prototypePrompt: prototype.prompt }
   if (!blob)
     return []
   const out: MigrationNote[] = []
@@ -556,8 +553,6 @@ export function migratePromptTemplates(ctx: ExtensionContext): MigrationNote[] {
   out.push(...planned.notes)
   if (review)
     out.push(...review.notes)
-  if (prototype)
-    out.push(...prototype.notes)
   if (planned.blob)
     out.push({ level: 'info', message: '提示词模板已迁到 Handlebars' })
   return out