diff --git a/src/renderer/src/components/native-chat/agent-session-failure-words-text.test.ts b/src/renderer/src/components/native-chat/agent-session-failure-words-text.test.ts
index 0b38825b0c7..8c0f3e9b31b 100644
--- a/src/renderer/src/components/native-chat/agent-session-failure-words-text.test.ts
+++ b/src/renderer/src/components/native-chat/agent-session-failure-words-text.test.ts
@@ -1,24 +1,11 @@
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import { i18n, translate } from '@/i18n/i18n'
+import { i18n } from '@/i18n/i18n'
 import type * as I18nModule from '@/i18n/i18n'
-import en from '@/i18n/locales/en.json'
-import zh from '@/i18n/locales/zh.json'
 import {
-  AGENT_SESSION_ATTACHMENT_PROBLEM_REASONS,
-  AGENT_SESSION_FAILURE_KINDS,
   readWholeAgentSessionFailureFact,
   type AgentSessionFailureFact
 } from '../../../../shared/agent-session-failure'
-import {
-  AGENT_SESSION_FAILURE_COPY,
-  sayAgentSessionFailureEnglish,
-  type AgentSessionFailureCopyId
-} from '../../../../shared/agent-session-failure-copy'
-import {
-  agentSessionFailureSentence,
-  type AgentSessionFailureWordsContext
-} from '../../../../shared/agent-session-failure-words'
-import { AGENT_SESSION_WRITE_NOTICE_COPY } from '../../../../shared/agent-session-write-notice-copy'
+import { agentSessionFailureSentence } from '../../../../shared/agent-session-failure-words'
 import { agentSessionWriteNoticeParts } from '../../../../shared/agent-session-refusal-notice'
 import { agentSessionRefusalFailure } from '../../../../shared/agent-session-write-failure'
 import { structuredAgentSessionRejectionParts } from '../../../../shared/structured-agent-session-rejection-words'
@@ -30,93 +17,11 @@ vi.mock('@/i18n/i18n', async (importOriginal) => {
   return { ...actual, translate: vi.fn(actual.translate) }
 })
 
-const IDS = Object.keys(AGENT_SESSION_FAILURE_COPY).filter(
-  (id): id is AgentSessionFailureCopyId => id in AGENT_SESSION_FAILURE_COPY
-)
-// Said by a refusal notice too, so they keep the notice's keys.
-const NOTICE_PIECES: readonly AgentSessionFailureCopyId[] = [
-  'terminalAgentHoldsChat',
-  'quitTerminalAgent',
-  'startNewChat',
-  'backgroundTasksRunning',
-  'waitForBackgroundTasks',
-  'agentStarting',
-  'waitForStart',
-  'agentStillWorking'
-]
-// Kana, and kanji whose simplified Chinese form differs (続 is 续, 読 is 读, ...).
-const JAPANESE_ONLY = /[\u3040-\u30ff続読変済図気帰戻検択転権単圧応対発処実証覧関専]/u
-const VALUES = {
-  agent: 'Claude',
-  loginCommand: 'agent login',
-  slashCommand: '/login',
-  command: 'compact',
-  detail: 'Image type .bmp',
-  limit: '20',
-  size: '5',
-  option: '--remote'
-}
-
-function factsFor(kind: AgentSessionFailureFact['kind']): AgentSessionFailureFact[] {
-  const facts: AgentSessionFailureFact[] = [
-    { kind },
-    { kind, detail: { text: 'Context window exceeded.', audience: 'person' } },
-    { kind, detail: { text: 'exit 1', audience: 'log' } },
-    // Person words with nothing left once trimmed: the sentence says the lead alone.
-    { kind, detail: { text: ' ... ', audience: 'person' } },
-    { kind, refusal: { code: 'agent_session_conflict', details: { reason: 'claimConflicted' } } },
-    { kind, refusal: { code: 'structured_agent_session_unsupported' } },
-    { kind, retry: { error: 'rate_limit', status: 429 } }
-  ]
-  for (const reason of AGENT_SESSION_ATTACHMENT_PROBLEM_REASONS) {
-    facts.push({ kind, attachment: { reason } }, { kind, attachment: { reason, limit: 20 } })
-  }
-  return facts
-}
-
-const CONTEXTS: AgentSessionFailureWordsContext[] = [
-  {},
-  { agentName: 'Codex' },
-  { agentName: 'Claude', command: 'clear' },
-  { retryControl: true },
-  { agentName: 'Claude', command: 'clear', retryControl: true },
-  { agentName: 'Codex', command: 'compact' },
-  { command: 'compact', retryControl: true }
-]
-
 afterEach(async () => {
   await i18n.changeLanguage('en')
 })
 
 describe('desktop words for a failure fact', () => {
-  it.each(['Claude', 'Codex'])(
-    'names %s in terminal refusals on every failure surface',
-    (agentName) => {
-      for (const surface of ['row', 'rejection', 'answer'] as const) {
-        expect(
-          agentSessionFailureSentence(
-            { kind: 'conversationOpenInTerminal' },
-            surface,
-            { agentName },
-            sayAgentSessionFailureTranslated
-          )
-        ).toBe(
-          `${agentName} is already running this conversation in another terminal. Quit ${agentName} there or close that terminal to continue here.`
-        )
-      }
-      expect(
-        agentSessionFailureSentence(
-          { kind: 'conversationOpenElsewhere' },
-          'row',
-          { agentName: 'Codex' },
-          sayAgentSessionFailureTranslated
-        )
-      ).toBe(
-        'Codex is still holding this conversation open. Try again in a moment, or close other Codex terminals.'
-      )
-    }
-  )
-
   it.each([
     ['en', 'Then send your message again.'],
     ['es', 'Después, envía tu mensaje de nuevo.'],
@@ -138,54 +43,6 @@ describe('desktop words for a failure fact', () => {
     ).toBe(`${row}. ${retry}`)
   })
 
-  it('has a key for every piece, whose English default is the shared sentence', () => {
-    for (const id of IDS) {
-      expect([id, sayAgentSessionFailureTranslated(id, VALUES)]).toEqual([
-        id,
-        sayAgentSessionFailureEnglish(id, VALUES)
-      ])
-    }
-  })
-
-  // The catalog answers first in English, so read the default each key is given directly.
-  it('gives each key the shared sentence as its English default', () => {
-    for (const id of IDS) {
-      vi.mocked(translate).mockClear()
-      sayAgentSessionFailureTranslated(id, VALUES)
-      const section = NOTICE_PIECES.includes(id) ? 'writeNotice' : 'failureWords'
-      expect(vi.mocked(translate).mock.calls.map(([key, fallback]) => [key, fallback])).toEqual([
-        [`components.native-chat.${section}.${id}`, AGENT_SESSION_FAILURE_COPY[id]]
-      ])
-    }
-  })
-
-  it('keeps the English catalog in step with the shared copy', () => {
-    const own = Object.fromEntries(
-      IDS.filter((id) => !NOTICE_PIECES.includes(id)).map((id) => [
-        id,
-        AGENT_SESSION_FAILURE_COPY[id]
-      ])
-    )
-    expect(en.components['native-chat'].failureWords).toEqual(own)
-    for (const id of NOTICE_PIECES) {
-      expect(AGENT_SESSION_WRITE_NOTICE_COPY).toHaveProperty(id, AGENT_SESSION_FAILURE_COPY[id])
-    }
-  })
-
-  it('says every sentence exactly as the host writes it, in English', () => {
-    for (const kind of AGENT_SESSION_FAILURE_KINDS) {
-      for (const fact of factsFor(kind)) {
-        for (const surface of ['row', 'rejection'] as const) {
-          for (const context of CONTEXTS) {
-            expect(
-              agentSessionFailureSentence(fact, surface, context, sayAgentSessionFailureTranslated)
-            ).toBe(agentSessionFailureSentence(fact, surface, context))
-          }
-        }
-      }
-    }
-  })
-
   it("words a refused start and a rejected message in the reader's language", async () => {
     await i18n.changeLanguage('fr')
     const refused = agentSessionRefusalFailure({
@@ -308,20 +165,4 @@ describe('desktop words for a failure fact', () => {
       )
     ).toBe(sentence)
   })
-
-  it('shows a host sentence with no fact beside it as written', async () => {
-    await i18n.changeLanguage('fr')
-    expect(
-      agentSessionWriteNoticeText(
-        structuredAgentSessionRejectionParts('Claude does not support .bmp images', 'send')
-      )
-    ).toBe('Claude does not support .bmp images')
-  })
-
-  it('keeps Japanese-only characters out of the Chinese words', () => {
-    const chat = zh.components['native-chat']
-    for (const words of Object.values(chat.failureWords)) {
-      expect(words).not.toMatch(JAPANESE_ONLY)
-    }
-  })
 })
diff --git a/src/renderer/src/components/pet/pet-import-failure-text.test.ts b/src/renderer/src/components/pet/pet-import-failure-text.test.ts
deleted file mode 100644
index c1e6da6d212..00000000000
--- a/src/renderer/src/components/pet/pet-import-failure-text.test.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import { PetImportError } from '../../../../shared/pet-import-failure-copy'
-import { customPetLabel, petImportFailureText } from './pet-import-failure-text'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-describe('pet import failure text', () => {
-  it('localizes a coded failure while main keeps the English error', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const { failure } = new PetImportError('fileTooLarge', { size: '12.5', max: 10 })
-    expect(failure.error).toBe('File is too large (12.5 MB). Max is 10 MB.')
-    expect(petImportFailureText(failure)).toBe(
-      es.pet.importErrors.fileTooLarge.replace('{{size}}', '12.5').replace('{{max}}', '10')
-    )
-    const parse = new PetImportError('manifestParseFailed', {}, 'Unexpected token }').failure
-    expect(petImportFailureText(parse)).toContain('Unexpected token }')
-  })
-
-  it('shows main English for unknown codes or missing params', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(petImportFailureText({ ok: false, error: 'Newer', errorCode: 'future' })).toBe('Newer')
-    expect(petImportFailureText({ ok: false, error: 'English', errorCode: 'fileTooLarge' })).toBe(
-      'English'
-    )
-  })
-
-  it('translates only the stored default names', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(customPetLabel({ label: 'Custom pet', kind: 'image' })).toBe(es.pet.defaultLabels.image)
-    expect(customPetLabel({ label: 'Custom pet' })).toBe(es.pet.defaultLabels.image)
-    expect(customPetLabel({ label: 'Pet bundle', kind: 'bundle' })).toBe(
-      es.pet.defaultLabels.bundle
-    )
-    expect(customPetLabel({ label: 'Mochi', kind: 'bundle' })).toBe('Mochi')
-  })
-})
diff --git a/src/renderer/src/components/plugins/presentation/plugin-status-presentation.test.ts b/src/renderer/src/components/plugins/presentation/plugin-status-presentation.test.ts
index 572f932949b..46a58eab48b 100644
--- a/src/renderer/src/components/plugins/presentation/plugin-status-presentation.test.ts
+++ b/src/renderer/src/components/plugins/presentation/plugin-status-presentation.test.ts
@@ -1,12 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import {
-  installedPluginPresentation,
-  isPluginEnabled,
-  pluginNeedsReview,
-  pluginStatusKind,
-  pluginStatusWord,
-  sortByAttention
-} from './plugin-status-presentation'
+import { installedPluginPresentation, sortByAttention } from './plugin-status-presentation'
 import type { PluginHostListEntry } from '../../../../../preload/api-types'
 
 function host(pluginKey: string, extra: Partial<PluginHostListEntry> = {}): PluginHostListEntry {
@@ -31,25 +24,8 @@ function host(pluginKey: string, extra: Partial<PluginHostListEntry> = {}): Plug
 }
 
 const idle = { updatedTo: null, needsReview: false }
-const base = { status: 'running' as const, needsReconsent: false, blockedByKillList: undefined }
 
 describe('plugin status presentation', () => {
-  it('ranks the safety list, then review, over the worker state', () => {
-    expect(pluginStatusKind({ ...base, blockedByKillList: { reason: 'unsafe' } })).toBe('blocked')
-    expect(pluginStatusKind({ ...base, needsReconsent: true })).toBe('review')
-    expect(pluginStatusKind({ ...base, status: 'pending' })).toBe('review')
-    expect(pluginStatusKind({ ...base, status: 'errored' })).toBe('error')
-    expect(pluginStatusKind({ ...base, status: 'idle' })).toBe('enabled')
-    expect(pluginStatusWord(pluginStatusKind(base))).toBe('Running')
-  })
-
-  it('names a crashed plugin Stopped everywhere, never Error', () => {
-    expect(pluginStatusWord('error')).toBe('Stopped')
-    expect(
-      installedPluginPresentation(host('a', { status: 'errored' }), null, false, idle)
-    ).toMatchObject({ primary: 'restart', statusText: 'Stopped' })
-  })
-
   it('offers Reinstall for a plugin that cannot load, and View error without one', () => {
     const broken = host('a', { status: 'invalid' })
     expect(installedPluginPresentation(broken, null, false, idle, '1.0.0').primary).toBe(
@@ -58,12 +34,6 @@ describe('plugin status presentation', () => {
     expect(installedPluginPresentation(broken, null, false, idle).primary).toBe('error')
   })
 
-  it('counts a crashed plugin as switched on, and a pending one as needing review', () => {
-    expect(isPluginEnabled({ status: 'errored' })).toBe(true)
-    expect(isPluginEnabled({ status: 'disabled' })).toBe(false)
-    expect(pluginNeedsReview({ status: 'pending', needsReconsent: false })).toBe(true)
-  })
-
   it('puts plugins that need the user first, then updates, keeping order within each', () => {
     const rows = [
       { installed: host('a'), update: false },
diff --git a/src/renderer/src/components/right-sidebar/ai-vault-scan-issue-copy.test.ts b/src/renderer/src/components/right-sidebar/ai-vault-scan-issue-copy.test.ts
index bc227b43c4c..07f548d92b8 100644
--- a/src/renderer/src/components/right-sidebar/ai-vault-scan-issue-copy.test.ts
+++ b/src/renderer/src/components/right-sidebar/ai-vault-scan-issue-copy.test.ts
@@ -37,36 +37,6 @@ describe('aiVaultScanIssueDisplayText', () => {
     )
   })
 
-  it('localizes the notice for WSL rows carried over from the last confirmed scan', async () => {
-    await useSpanish()
-    const carried = aiVaultScanIssueText('wslSessionsFromLastScan')
-    expect(carried.message).toBe('WSL could not be checked; its sessions are from the last scan.')
-    expect(aiVaultScanIssueDisplayText(carried)).toBe(es.aiVault.scanIssues.wslSessionsFromLastScan)
-  })
-
-  it('shows the English message for uncoded, unknown, or incomplete issues', async () => {
-    await useSpanish()
-    expect(aiVaultScanIssueDisplayText({ message: 'Old host text' })).toBe('Old host text')
-    expect(
-      aiVaultScanIssueDisplayText({
-        message: 'Newer',
-        messageCode: 'futureCode'
-      })
-    ).toBe('Newer')
-    expect(
-      aiVaultScanIssueDisplayText({
-        message: 'English',
-        messageCode: 'toString'
-      })
-    ).toBe('English')
-    expect(
-      aiVaultScanIssueDisplayText({
-        message: 'English',
-        messageCode: 'wslDistroNotRunning'
-      })
-    ).toBe('English')
-  })
-
   it('localizes classified scanner faults and passes other errors through', async () => {
     await useSpanish()
     expect(aiVaultScanErrorText('AI Vault service timed out after 130000ms.')).toBe(
diff --git a/src/renderer/src/components/right-sidebar/hosted-review-create-failure-copy.test.ts b/src/renderer/src/components/right-sidebar/hosted-review-create-failure-copy.test.ts
deleted file mode 100644
index 8c32be7b15a..00000000000
--- a/src/renderer/src/components/right-sidebar/hosted-review-create-failure-copy.test.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import { localizedCreateFailure } from './hosted-review-create-failure-copy'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-describe('localizedCreateFailure for missing create fields', () => {
-  it('localizes the reason and keeps the English error for an older host', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const english = 'Create PR failed: base branch, head branch, and title are required.'
-    expect(
-      localizedCreateFailure(
-        { ok: false, code: 'validation', error: english, reason: 'base_head_title_required' },
-        'bitbucket'
-      )
-    ).toContain(es.sourceControl.createReviewFailure.baseHeadTitleRequired)
-    expect(localizedCreateFailure({ ok: false, code: 'validation', error: english }, 'gitea')).toBe(
-      english
-    )
-  })
-})
-
-describe('localizedCreateFailure for stacked pull requests', () => {
-  it('localizes a stacked reason and falls back to English without its branch', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const english = 'Orca found multiple open pull requests for the current branch feature/x.'
-    expect(
-      localizedCreateFailure(
-        {
-          ok: false,
-          code: 'validation',
-          error: english,
-          reason: 'stack_head_ambiguous',
-          head: 'feature/x'
-        },
-        'github'
-      )
-    ).toBe(
-      es.sourceControl.createReviewFailure.stacked.stackHeadAmbiguous.replace(
-        '{{head}}',
-        'feature/x'
-      )
-    )
-    expect(
-      localizedCreateFailure(
-        { ok: false, code: 'validation', error: english, reason: 'stack_head_ambiguous' },
-        'github'
-      )
-    ).toBe(english)
-  })
-})
diff --git a/src/renderer/src/components/sidebar/wsl-host-failure-text.test.ts b/src/renderer/src/components/sidebar/wsl-host-failure-text.test.ts
deleted file mode 100644
index 3a959995371..00000000000
--- a/src/renderer/src/components/sidebar/wsl-host-failure-text.test.ts
+++ /dev/null
@@ -1,83 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import {
-  wslHostAddRefusalText,
-  wslHostServerStopReason,
-  wslHostStatusDetailText
-} from '../../../../shared/wsl-host-failure-copy'
-import {
-  wslHostAddRefusalMessage,
-  wslHostStatusDetailMessage,
-  wslHostStopReasonMessage
-} from './wsl-host-failure-text'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-async function useSpanish(): Promise<void> {
-  i18n.addResourceBundle('es', 'translation', es)
-  await i18n.changeLanguage('es')
-}
-
-describe('WSL host failure text', () => {
-  it('keeps the English wire text and translates it by code, commands verbatim', async () => {
-    await useSpanish()
-    const wsl1 = wslHostAddRefusalText('wsl1', { distro: 'Ubuntu' })
-    expect(wsl1.text).toBe(
-      'Ubuntu runs WSL 1, which Orca no longer supports. Convert it to WSL 2 in a Windows terminal with: wsl --set-version Ubuntu 2'
-    )
-    const translated = wslHostAddRefusalMessage({
-      message: wsl1.text,
-      errorCode: wsl1.code,
-      errorParams: wsl1.params
-    })
-    expect(translated).toBe(
-      es.sidebar.wslHosts.addErrors.wsl1
-        .replace('{{distro}}', 'Ubuntu')
-        .replace('{{command}}', 'wsl --set-version Ubuntu 2')
-    )
-    expect(translated).not.toBe(wsl1.text)
-  })
-
-  it('translates status details, including plural restarts and verbatim stop errors', async () => {
-    await useSpanish()
-    const gaveUp = wslHostStatusDetailText('restartGaveUp', { distro: 'Ubuntu', count: 5 })
-    expect(gaveUp.text).toBe('Could not restart the Orca server in Ubuntu after 5 attempts')
-    expect(
-      wslHostStatusDetailMessage({
-        detail: gaveUp.text,
-        detailCode: gaveUp.code,
-        detailParams: gaveUp.params
-      })
-    ).toBe(
-      es.sidebar.wslHosts.statusDetails.restartGaveUp_other
-        .replace('{{distro}}', 'Ubuntu')
-        .replace('{{count}}', '5')
-    )
-    const unrecorded = wslHostServerStopReason('removalUnrecorded', { detail: 'EACCES' })
-    expect(wslHostStopReasonMessage(unrecorded)).toBe(
-      es.sidebar.wslHosts.statusDetails.removalUnrecorded.replace('{{detail}}', 'EACCES')
-    )
-  })
-
-  it('shows the English text for uncoded, unknown, or incomplete codes', async () => {
-    await useSpanish()
-    expect(wslHostAddRefusalMessage({ message: 'bridge refused' })).toBe('bridge refused')
-    expect(wslHostAddRefusalMessage({ message: 'Newer', errorCode: 'futureCode' })).toBe('Newer')
-    expect(wslHostAddRefusalMessage({ message: 'English', errorCode: 'alreadyAdded' })).toBe(
-      'English'
-    )
-    expect(wslHostAddRefusalMessage({ message: 'English', errorCode: 'toString' })).toBe('English')
-    expect(
-      wslHostStatusDetailMessage({
-        detail: 'English',
-        detailCode: 'restartGaveUp',
-        detailParams: { distro: 'Ubuntu', count: '5' }
-      })
-    ).toBe('English')
-  })
-})
diff --git a/src/renderer/src/lib/bitbucket-connect-error-copy.test.ts b/src/renderer/src/lib/bitbucket-connect-error-copy.test.ts
deleted file mode 100644
index 14d9611bf99..00000000000
--- a/src/renderer/src/lib/bitbucket-connect-error-copy.test.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import { bitbucketConnectFailure } from '../../../shared/bitbucket-credentials'
-import { bitbucketConnectErrorText } from './bitbucket-connect-error-copy'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-describe('bitbucket connect error copy', () => {
-  it('translates a coded failure while its wire error stays English', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const failure = bitbucketConnectFailure('rejected')
-    expect(failure.error).toBe(
-      'Bitbucket rejected these credentials. Check the email and token, then try again.'
-    )
-    expect(bitbucketConnectErrorText(failure)).toBe(es.codeHost.bitbucketConnect.rejected)
-  })
-
-  it('shows the English error for uncoded or unknown failures', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(bitbucketConnectErrorText({ error: 'Enter an access token.' })).toBe(
-      'Enter an access token.'
-    )
-    expect(bitbucketConnectErrorText({ error: 'New text', errorCode: 'fromNewerHost' })).toBe(
-      'New text'
-    )
-  })
-})
diff --git a/src/renderer/src/lib/browser-cookie-import-error-copy.test.ts b/src/renderer/src/lib/browser-cookie-import-error-copy.test.ts
index cc83058bd30..87b8bac73e0 100644
--- a/src/renderer/src/lib/browser-cookie-import-error-copy.test.ts
+++ b/src/renderer/src/lib/browser-cookie-import-error-copy.test.ts
@@ -11,23 +11,6 @@ afterEach(async () => {
 })
 
 describe('browserCookieImportFailureText', () => {
-  it('localizes coded failures while the wire reason stays the legacy English', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const copyFailed = browserCookieImportFailure('databaseCopyFailed', { browser: 'Arc' })
-    expect(copyFailed.reason).toBe('Could not copy Arc cookies database. Try closing Arc first.')
-    expect(browserCookieImportFailureText(copyFailed)).toBe(
-      es.browser.cookieImport.errors.databaseCopyFailed.replaceAll('{{browser}}', 'Arc')
-    )
-    const skipped = browserCookieImportFailure('fileNoValidCookies', { count: 1 })
-    expect(skipped.reason).toBe(
-      'No valid cookies found. 1 entries were skipped due to missing or invalid fields.'
-    )
-    expect(browserCookieImportFailureText(skipped)).toBe(
-      es.browser.cookieImport.errors.fileNoValidCookies_one.replace('{{count}}', '1')
-    )
-  })
-
   it('keeps diagnostic detail verbatim', async () => {
     i18n.addResourceBundle('es', 'translation', es)
     await i18n.changeLanguage('es')
@@ -41,19 +24,4 @@ describe('browserCookieImportFailureText', () => {
     )
     expect(browserCookieImportFailureText(failed)).toContain('database is locked {{browser}}')
   })
-
-  it('shows the host English for uncoded, unknown, or incomplete failures', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(browserCookieImportFailureText({ reason: 'Old host text' })).toBe('Old host text')
-    expect(browserCookieImportFailureText({ reason: 'Newer', reasonCode: 'futureCode' })).toBe(
-      'Newer'
-    )
-    expect(browserCookieImportFailureText({ reason: 'English', reasonCode: 'noCookies' })).toBe(
-      'English'
-    )
-    expect(browserCookieImportFailureText({ reason: 'English', reasonCode: 'toString' })).toBe(
-      'English'
-    )
-  })
 })
diff --git a/src/renderer/src/lib/remote-server-pairing-error-copy.test.ts b/src/renderer/src/lib/remote-server-pairing-error-copy.test.ts
deleted file mode 100644
index b12f8d630e0..00000000000
--- a/src/renderer/src/lib/remote-server-pairing-error-copy.test.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import { remoteServerPairingFailureMessage } from './remote-server-pairing-error-copy'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-describe('remote server pairing error copy', () => {
-  it('translates a coded failure and keeps the server name verbatim', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const text = remoteServerPairingFailureMessage({
-      message: 'A server named "Studio" already exists.',
-      errorCode: 'nameTaken',
-      errorParams: { name: 'Studio' }
-    })
-    expect(text).toBe(es.runtime.remoteServerPairingErrors.nameTaken.replace('{{name}}', 'Studio'))
-    expect(text).not.toBe('A server named "Studio" already exists.')
-  })
-
-  it('shows the English message for uncoded, unknown, or incomplete failures', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    const message = 'A server named "Studio" already exists.'
-    expect(remoteServerPairingFailureMessage({ message })).toBe(message)
-    expect(remoteServerPairingFailureMessage({ message, errorCode: 'fromNewerHost' })).toBe(message)
-    expect(remoteServerPairingFailureMessage({ message, errorCode: 'nameTaken' })).toBe(message)
-  })
-})
diff --git a/src/renderer/src/lib/updater-message-copy.test.ts b/src/renderer/src/lib/updater-message-copy.test.ts
deleted file mode 100644
index c1a4d5b7515..00000000000
--- a/src/renderer/src/lib/updater-message-copy.test.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import { afterEach, describe, expect, it } from 'vitest'
-import { i18n } from '@/i18n/i18n'
-import es from '@/i18n/locales/es.json'
-import { updaterCodedMessage } from '../../../shared/updater-failure-copy'
-import { updaterMessageText } from './updater-message-copy'
-
-const originalLanguage = i18n.language
-
-afterEach(async () => {
-  await i18n.changeLanguage(originalLanguage)
-})
-
-describe('updater message copy', () => {
-  it('translates coded updater messages and keeps channel names verbatim', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(updaterMessageText(updaterCodedMessage('updateServerUnreachable'))).toBe(
-      es.updates.failure.updateServerUnreachable
-    )
-    expect(
-      updaterMessageText(updaterCodedMessage('unsignedDevChannel', { channel: 'Hourly' }))
-    ).toBe(es.updates.failure.unsignedDevChannel.replace('{{channel}}', 'Hourly'))
-  })
-
-  it('keeps the English message for older hosts, unknown codes and missing params', async () => {
-    i18n.addResourceBundle('es', 'translation', es)
-    await i18n.changeLanguage('es')
-    expect(updaterMessageText({ message: 'Older host text' })).toBe('Older host text')
-    expect(updaterMessageText({ message: 'Newer host text', messageCode: 'futureCode' })).toBe(
-      'Newer host text'
-    )
-    expect(
-      updaterMessageText({
-        message: 'Hourly builds are unsigned…',
-        messageCode: 'unsignedDevChannel'
-      })
-    ).toBe('Hourly builds are unsigned…')
-  })
-})