diff --git a/src/main/ipc/pet-bundle-import.ts b/src/main/ipc/pet-bundle-import.ts
index 4ecba5db827..a5352a8b971 100644
--- a/src/main/ipc/pet-bundle-import.ts
+++ b/src/main/ipc/pet-bundle-import.ts
@@ -1,4 +1,5 @@
 import { translateMain } from '../i18n/main-i18n'
+import { PET_BUNDLE_DEFAULT_LABEL, PetImportError } from '../../shared/pet-import-failure-copy'
 import { BrowserWindow, dialog } from 'electron'
 import { mkdir, readFile, rename, rm, stat } from 'node:fs/promises'
 import { randomUUID } from 'node:crypto'
@@ -34,7 +35,7 @@ export async function importPetBundle(
     const pickedStat = await stat(picked)
     bundleDir = pickedStat.isDirectory() ? picked : dirname(picked)
   } catch {
-    throw new Error('Could not read the selected path.')
+    throw new PetImportError('pathUnreadable')
   }
 
   const manifestPath = join(bundleDir, 'pet.json')
@@ -42,13 +43,13 @@ export async function importPetBundle(
   try {
     manifestStat = await stat(manifestPath)
   } catch {
-    throw new Error('Bundle is missing pet.json.')
+    throw new PetImportError('manifestMissing')
   }
   if (!manifestStat.isFile() || manifestStat.size > MAX_MANIFEST_BYTES) {
-    throw new Error('pet.json is invalid.')
+    throw new PetImportError('manifestInvalid')
   }
   if (await isSymlink(manifestPath)) {
-    throw new Error('pet.json must not be a symlink.')
+    throw new PetImportError('manifestSymlink')
   }
 
   let manifest: ResolvedPetManifest<PetManifest>
@@ -60,7 +61,11 @@ export async function importPetBundle(
     }
     manifest = applyCodexPetDefaults(PetManifestSchema.parse(JSON.parse(raw)))
   } catch (error) {
-    throw new Error(`Invalid pet.json: ${error instanceof Error ? error.message : 'parse error'}`)
+    throw new PetImportError(
+      'manifestParseFailed',
+      {},
+      error instanceof Error ? error.message : 'parse error'
+    )
   }
 
   const { sheetSrc, sheetClass } = await resolveBundleSpritesheetSource(manifest, bundleDir)
@@ -84,11 +89,11 @@ export async function importPetBundle(
     await rename(tmpDir, destDir)
   } catch {
     await rm(tmpDir, { recursive: true, force: true }).catch(() => {})
-    throw new Error('Could not save the pet bundle.')
+    throw new PetImportError('bundleSaveFailed')
   }
 
   const rawLabel = (manifest.displayName ?? manifest.id ?? basename(bundleDir)).trim()
-  const label = rawLabel.length > 0 ? rawLabel.slice(0, 40) : 'Pet bundle'
+  const label = rawLabel.length > 0 ? rawLabel.slice(0, 40) : PET_BUNDLE_DEFAULT_LABEL
   return {
     id,
     label,
diff --git a/src/main/ipc/pet-bundle-sprite-metadata.ts b/src/main/ipc/pet-bundle-sprite-metadata.ts
index 09d70858a5c..08750873101 100644
--- a/src/main/ipc/pet-bundle-sprite-metadata.ts
+++ b/src/main/ipc/pet-bundle-sprite-metadata.ts
@@ -1,4 +1,5 @@
 import { nativeImage } from 'electron'
+import { PetImportError } from '../../shared/pet-import-failure-copy'
 import { readFile } from 'node:fs/promises'
 import type { CustomPet } from '../../shared/pet-types'
 import { MAX_BYTES } from './pet-import-size-limits'
@@ -36,38 +37,45 @@ export async function buildBundleSprite<T extends PetManifestLike>(
     const sheetBuf = await readFile(sheetSrc)
     // Recheck the read size because the file may have grown after stat.
     if (sheetBuf.byteLength > MAX_BYTES) {
-      throw new Error('Spritesheet exceeded the size limit.')
+      throw new PetImportError('sheetSizeLimitExceeded')
     }
     const dims = await readSheetDimensions(sheetBuf)
     if (!dims) {
-      throw new Error('Could not decode the spritesheet image.')
+      throw new PetImportError('sheetUndecodable')
     }
     const { width: fw, height: fh } = manifest.frame
     if (dims.width % fw !== 0 || dims.height % fh !== 0) {
-      throw new Error(
-        `Spritesheet ${dims.width}×${dims.height} is not a clean multiple of frame ${fw}×${fh}.`
-      )
+      throw new PetImportError('sheetFrameMismatch', {
+        sheetWidth: dims.width,
+        sheetHeight: dims.height,
+        frameWidth: fw,
+        frameHeight: fh
+      })
     }
     const columns = dims.width / fw
     const rows = dims.height / fh
     if (manifest.animations) {
       for (const [name, anim] of Object.entries(manifest.animations)) {
         if (anim.row >= rows) {
-          throw new Error(`Animation "${name}" references row ${anim.row} but sheet has ${rows}.`)
+          throw new PetImportError('animationRowOutOfRange', { name, row: anim.row, rows })
         }
         if (anim.frames > columns) {
-          throw new Error(
-            `Animation "${name}" has ${anim.frames} frames but sheet only has ${columns} columns.`
-          )
+          throw new PetImportError('animationTooManyFrames', {
+            name,
+            frames: anim.frames,
+            columns
+          })
         }
         if (anim.frameDurationsMs && anim.frameDurationsMs.length !== anim.frames) {
-          throw new Error(
-            `Animation "${name}" declares ${anim.frameDurationsMs.length} frame durations but ${anim.frames} frames.`
-          )
+          throw new PetImportError('animationDurationMismatch', {
+            name,
+            durations: anim.frameDurationsMs.length,
+            frames: anim.frames
+          })
         }
       }
       if (manifest.defaultAnimation && !manifest.animations[manifest.defaultAnimation]) {
-        throw new Error(`defaultAnimation "${manifest.defaultAnimation}" not in animations.`)
+        throw new PetImportError('defaultAnimationMissing', { name: manifest.defaultAnimation })
       }
     }
     sprite = {
diff --git a/src/main/ipc/pet-bundle-spritesheet-source.ts b/src/main/ipc/pet-bundle-spritesheet-source.ts
index 5885d1a5d92..5076de7d1fa 100644
--- a/src/main/ipc/pet-bundle-spritesheet-source.ts
+++ b/src/main/ipc/pet-bundle-spritesheet-source.ts
@@ -1,4 +1,5 @@
 import { stat } from 'node:fs/promises'
+import { PetImportError } from '../../shared/pet-import-failure-copy'
 import { isAbsolute, resolve, sep } from 'node:path'
 import { classifyFile } from './pet-image-formats'
 import { MAX_BYTES } from './pet-import-size-limits'
@@ -16,39 +17,39 @@ export async function resolveBundleSpritesheetSource<T extends PetManifestLike>(
     isAbsolute(normalizedSpritePath) ||
     /^[a-zA-Z]:/.test(manifest.spritesheetPath)
   ) {
-    throw new Error('spritesheetPath must be relative to the bundle.')
+    throw new PetImportError('sheetPathNotRelative')
   }
   // Accept Windows-exported bundles on macOS/Linux.
   const sheetSrc = resolve(bundleDir, normalizedSpritePath)
   const bundleResolved = resolve(bundleDir)
   if (sheetSrc === bundleResolved) {
-    throw new Error('spritesheetPath must point to a file, not the bundle root.')
+    throw new PetImportError('sheetPathIsRoot')
   }
   const bundleRoot = bundleResolved + sep
   // Match paths case-insensitively on Windows.
   const cmp = process.platform === 'win32' ? (s: string) => s.toLowerCase() : (s: string) => s
   if (!cmp(sheetSrc + sep).startsWith(cmp(bundleRoot))) {
-    throw new Error('spritesheetPath escapes the bundle.')
+    throw new PetImportError('sheetPathEscapes')
   }
   if (await isSymlink(sheetSrc)) {
-    throw new Error('spritesheet must not be a symlink.')
+    throw new PetImportError('sheetSymlink')
   }
   const sheetClass = classifyFile(sheetSrc)
   if (!sheetClass || sheetClass.ext === '.svg') {
     // Sprite layouts require raster dimensions.
-    throw new Error('Spritesheet must be a PNG, APNG, JPG, GIF, or WebP.')
+    throw new PetImportError('sheetUnsupportedType')
   }
   let sheetStat: Awaited<ReturnType<typeof stat>>
   try {
     sheetStat = await stat(sheetSrc)
   } catch {
-    throw new Error('Spritesheet file not found.')
+    throw new PetImportError('sheetNotFound')
   }
   if (!sheetStat.isFile()) {
-    throw new Error('Spritesheet path is not a file.')
+    throw new PetImportError('sheetNotAFile')
   }
   if (sheetStat.size > MAX_BYTES) {
-    throw new Error(`Spritesheet is too large (${(sheetStat.size / (1024 * 1024)).toFixed(1)} MB).`)
+    throw new PetImportError('sheetTooLarge', { size: (sheetStat.size / (1024 * 1024)).toFixed(1) })
   }
   return { sheetSrc, sheetClass }
 }
diff --git a/src/main/ipc/pet.test.ts b/src/main/ipc/pet.test.ts
index 64e5126eedd..9881da4637b 100644
--- a/src/main/ipc/pet.test.ts
+++ b/src/main/ipc/pet.test.ts
@@ -168,8 +168,11 @@ describe('registerPetHandlers', () => {
     })
     showOpenDialogMock.mockResolvedValue({ canceled: false, filePaths: [bundleDir] })
 
-    await expect(getHandler('pet:importPetBundle')({ sender: {} })).rejects.toThrow(
-      'declares 1 frame durations but 2 frames'
-    )
+    await expect(getHandler('pet:importPetBundle')({ sender: {} })).resolves.toEqual({
+      ok: false,
+      error: 'Animation "idle" declares 1 frame durations but 2 frames.',
+      errorCode: 'animationDurationMismatch',
+      errorParams: { name: 'idle', durations: 1, frames: 2 }
+    })
   })
 })
diff --git a/src/main/ipc/pet.ts b/src/main/ipc/pet.ts
index 38cc0f65488..1141bc18efb 100644
--- a/src/main/ipc/pet.ts
+++ b/src/main/ipc/pet.ts
@@ -1,4 +1,9 @@
 import { translateMain } from '../i18n/main-i18n'
+import {
+  CUSTOM_PET_DEFAULT_LABEL,
+  PetImportError,
+  type PetImportFailure
+} from '../../shared/pet-import-failure-copy'
 import { BrowserWindow, dialog, ipcMain } from 'electron'
 import { copyFile, mkdir, readFile, rm, stat } from 'node:fs/promises'
 import { randomUUID } from 'node:crypto'
@@ -17,73 +22,90 @@ const PetFileRequestSchema = z.object({
   kind: z.enum(['image', 'bundle']).optional()
 })
 
+// Known refusals return as data so the renderer can translate them by code.
+async function withPetImportFailure(
+  run: () => Promise<CustomPet | null>
+): Promise<CustomPet | PetImportFailure | null> {
+  try {
+    return await run()
+  } catch (error) {
+    if (error instanceof PetImportError) {
+      return error.failure
+    }
+    throw error
+  }
+}
+
 export function registerPetHandlers(): void {
-  ipcMain.handle('pet:import', async (event): Promise<CustomPet | null> => {
-    const senderWindow =
-      BrowserWindow.fromWebContents(event.sender) ?? BrowserWindow.getFocusedWindow()
-    const options: Electron.OpenDialogOptions = {
-      title: translateMain('native.dialog.pickPet', 'Pick pet'),
-      properties: ['openFile'],
-      // APNG uses .png; its missing macOS UTI can hide other formats when listed separately.
-      filters: [
-        {
-          name: translateMain('native.dialog.petImage', 'Pet image'),
-          extensions: ['png', 'jpg', 'jpeg', 'gif', 'webp', 'svg']
-        }
-      ]
-    }
-    const result = senderWindow
-      ? await dialog.showOpenDialog(senderWindow, options)
-      : await dialog.showOpenDialog(options)
-    if (result.canceled || result.filePaths.length === 0) {
-      return null
-    }
-    const src = result.filePaths[0]
-    const classified = classifyFile(src)
-    if (!classified) {
-      throw new Error('Unsupported file. Pick a PNG, APNG, JPG, GIF, WebP, or SVG.')
-    }
-    let srcStat: Awaited<ReturnType<typeof stat>>
-    try {
-      srcStat = await stat(src)
-    } catch {
-      throw new Error('Could not read the selected file.')
-    }
-    if (!srcStat.isFile()) {
-      throw new Error('Selected path is not a file')
-    }
-    if (srcStat.size > MAX_BYTES) {
-      throw new Error(
-        `File is too large (${(srcStat.size / (1024 * 1024)).toFixed(1)} MB). Max is ${MAX_BYTES / (1024 * 1024)} MB.`
-      )
-    }
+  ipcMain.handle('pet:import', (event) =>
+    withPetImportFailure(async (): Promise<CustomPet | null> => {
+      const senderWindow =
+        BrowserWindow.fromWebContents(event.sender) ?? BrowserWindow.getFocusedWindow()
+      const options: Electron.OpenDialogOptions = {
+        title: translateMain('native.dialog.pickPet', 'Pick pet'),
+        properties: ['openFile'],
+        // APNG uses .png; its missing macOS UTI can hide other formats when listed separately.
+        filters: [
+          {
+            name: translateMain('native.dialog.petImage', 'Pet image'),
+            extensions: ['png', 'jpg', 'jpeg', 'gif', 'webp', 'svg']
+          }
+        ]
+      }
+      const result = senderWindow
+        ? await dialog.showOpenDialog(senderWindow, options)
+        : await dialog.showOpenDialog(options)
+      if (result.canceled || result.filePaths.length === 0) {
+        return null
+      }
+      const src = result.filePaths[0]
+      const classified = classifyFile(src)
+      if (!classified) {
+        throw new PetImportError('unsupportedFile')
+      }
+      let srcStat: Awaited<ReturnType<typeof stat>>
+      try {
+        srcStat = await stat(src)
+      } catch {
+        throw new PetImportError('fileUnreadable')
+      }
+      if (!srcStat.isFile()) {
+        throw new PetImportError('notAFile')
+      }
+      if (srcStat.size > MAX_BYTES) {
+        throw new PetImportError('fileTooLarge', {
+          size: (srcStat.size / (1024 * 1024)).toFixed(1),
+          max: MAX_BYTES / (1024 * 1024)
+        })
+      }
 
-    const dir = getPetsDir()
-    await mkdir(dir, { recursive: true })
-    const id = randomUUID()
-    // Keep the extension so pet:read can recover MIME type without another lookup.
-    const fileName = `${id}${classified.ext}`
-    const dest = join(dir, fileName)
-    try {
-      await copyFile(src, dest)
-    } catch {
-      await rm(dest, { force: true }).catch(() => {})
-      throw new Error('Could not save the pet.')
-    }
+      const dir = getPetsDir()
+      await mkdir(dir, { recursive: true })
+      const id = randomUUID()
+      // Keep the extension so pet:read can recover MIME type without another lookup.
+      const fileName = `${id}${classified.ext}`
+      const dest = join(dir, fileName)
+      try {
+        await copyFile(src, dest)
+      } catch {
+        await rm(dest, { force: true }).catch(() => {})
+        throw new PetImportError('saveFailed')
+      }
 
-    const rawLabel = basename(src, extname(src)).trim()
-    const label = rawLabel.length > 0 ? rawLabel.slice(0, 40) : 'Custom pet'
-    return {
-      id,
-      label,
-      fileName,
-      mimeType: classified.mimeType,
-      kind: 'image'
-    }
-  })
+      const rawLabel = basename(src, extname(src)).trim()
+      const label = rawLabel.length > 0 ? rawLabel.slice(0, 40) : CUSTOM_PET_DEFAULT_LABEL
+      return {
+        id,
+        label,
+        fileName,
+        mimeType: classified.mimeType,
+        kind: 'image'
+      }
+    })
+  )
 
-  ipcMain.handle('pet:importPetBundle', async (event): Promise<CustomPet | null> =>
-    importPetBundle(event)
+  ipcMain.handle('pet:importPetBundle', (event) =>
+    withPetImportFailure(() => importPetBundle(event))
   )
 
   ipcMain.handle(
diff --git a/src/main/ipc/shell.ts b/src/main/ipc/shell.ts
index 96539f0955f..982ea5e452d 100644
--- a/src/main/ipc/shell.ts
+++ b/src/main/ipc/shell.ts
@@ -13,6 +13,10 @@ import type {
   ShellOpenLocalPathResult
 } from '../../shared/shell-open-types'
 import { MAX_REPO_ICON_UPLOAD_BYTES } from '../../shared/repo-icon'
+import {
+  repoIconPickFailure,
+  type RepoIconPickResult
+} from '../../shared/repo-icon-pick-failure-copy'
 import type { Store } from '../persistence'
 import {
   EXTERNAL_EDITOR_CLI_COMMAND,
@@ -270,41 +274,38 @@ export function registerShellHandlers(
     return result.filePaths[0]
   })
 
-  ipcMain.handle(
-    'shell:pickRepoIconImage',
-    async (): Promise<{ dataUrl: string; fileName: string } | null> => {
-      const result = await dialog.showOpenDialog({
-        properties: ['openFile'],
-        filters: [
-          {
-            name: translateMain('native.dialog.repoIconImages', 'Repo icon images'),
-            extensions: ['png']
-          }
-        ]
-      })
-      if (result.canceled || result.filePaths.length === 0) {
-        return null
-      }
-
-      const filePath = result.filePaths[0]
-      const extension = extname(filePath).toLowerCase()
-      const mimeType = REPO_ICON_IMAGE_MIME_TYPES[extension]
-      if (!mimeType) {
-        throw new Error('Repo icons must be PNG files.')
-      }
-
-      const stats = await stat(filePath)
-      if (stats.size > MAX_REPO_ICON_UPLOAD_BYTES) {
-        throw new Error('Repo icon image must be 256KB or smaller.')
-      }
-
-      const buffer = await readFile(filePath)
-      return {
-        dataUrl: `data:${mimeType};base64,${buffer.toString('base64')}`,
-        fileName: basename(filePath)
-      }
+  ipcMain.handle('shell:pickRepoIconImage', async (): Promise<RepoIconPickResult> => {
+    const result = await dialog.showOpenDialog({
+      properties: ['openFile'],
+      filters: [
+        {
+          name: translateMain('native.dialog.repoIconImages', 'Repo icon images'),
+          extensions: ['png']
+        }
+      ]
+    })
+    if (result.canceled || result.filePaths.length === 0) {
+      return null
     }
-  )
+
+    const filePath = result.filePaths[0]
+    const extension = extname(filePath).toLowerCase()
+    const mimeType = REPO_ICON_IMAGE_MIME_TYPES[extension]
+    if (!mimeType) {
+      return repoIconPickFailure('notPng')
+    }
+
+    const stats = await stat(filePath)
+    if (stats.size > MAX_REPO_ICON_UPLOAD_BYTES) {
+      return repoIconPickFailure('tooLarge')
+    }
+
+    const buffer = await readFile(filePath)
+    return {
+      dataUrl: `data:${mimeType};base64,${buffer.toString('base64')}`,
+      fileName: basename(filePath)
+    }
+  })
 
   ipcMain.handle('shell:pickAudio', async (): Promise<string | null> => {
     const result = await dialog.showOpenDialog({
diff --git a/src/preload/api/pet-api.ts b/src/preload/api/pet-api.ts
index 8dffdda300b..ebb6937b43a 100644
--- a/src/preload/api/pet-api.ts
+++ b/src/preload/api/pet-api.ts
@@ -1,8 +1,9 @@
 import type { CustomPet } from '../../shared/pet-types'
+import type { PetImportFailure } from '../../shared/pet-import-failure-copy'
 
 export type PetApi = {
-  import: () => Promise<CustomPet | null>
-  importPetBundle: () => Promise<CustomPet | null>
+  import: () => Promise<CustomPet | PetImportFailure | null>
+  importPetBundle: () => Promise<CustomPet | PetImportFailure | null>
   read: (id: string, fileName: string, kind?: 'image' | 'bundle') => Promise<ArrayBuffer | null>
   delete: (id: string, fileName: string, kind?: 'image' | 'bundle') => Promise<void>
 }
diff --git a/src/preload/api/pet-bridge.ts b/src/preload/api/pet-bridge.ts
index c51751b3161..e957f0b1535 100644
--- a/src/preload/api/pet-bridge.ts
+++ b/src/preload/api/pet-bridge.ts
@@ -1,10 +1,12 @@
 import { ipcRenderer } from 'electron'
 import type { CustomPet } from '../../shared/pet-types'
+import type { PetImportFailure } from '../../shared/pet-import-failure-copy'
 import type { PreloadApi } from '../api-types'
 
 export const petApi = {
-  import: (): Promise<CustomPet | null> => ipcRenderer.invoke('pet:import'),
-  importPetBundle: (): Promise<CustomPet | null> => ipcRenderer.invoke('pet:importPetBundle'),
+  import: (): Promise<CustomPet | PetImportFailure | null> => ipcRenderer.invoke('pet:import'),
+  importPetBundle: (): Promise<CustomPet | PetImportFailure | null> =>
+    ipcRenderer.invoke('pet:importPetBundle'),
   read: (id: string, fileName: string, kind?: 'image' | 'bundle'): Promise<ArrayBuffer | null> =>
     ipcRenderer.invoke('pet:read', id, fileName, kind),
   delete: (id: string, fileName: string, kind?: 'image' | 'bundle'): Promise<void> =>
diff --git a/src/preload/api/shell-api.ts b/src/preload/api/shell-api.ts
index b3d42ae2cff..a5b360c8f92 100644
--- a/src/preload/api/shell-api.ts
+++ b/src/preload/api/shell-api.ts
@@ -1,3 +1,4 @@
+import type { RepoIconPickResult } from '../../shared/repo-icon-pick-failure-copy'
 import type { ExecutionHostId } from '../../shared/execution-host'
 import type { ShellPathExistence } from '../../shared/path-existence-batch'
 import type {
@@ -30,10 +31,7 @@ export type ShellApi = {
   pickAttachment: () => Promise<string | null>
   pickAttachments: () => Promise<string[]>
   pickImage: () => Promise<string | null>
-  pickRepoIconImage: () => Promise<{
-    dataUrl: string
-    fileName: string
-  } | null>
+  pickRepoIconImage: () => Promise<RepoIconPickResult>
   pickAudio: () => Promise<string | null>
   pickDirectory: (args: { defaultPath?: string }) => Promise<string | null>
   copyFile: (args: { srcPath: string; destPath: string }) => Promise<void>
diff --git a/src/preload/api/shell-bridge.ts b/src/preload/api/shell-bridge.ts
index 759a7e679d2..0d260d7d247 100644
--- a/src/preload/api/shell-bridge.ts
+++ b/src/preload/api/shell-bridge.ts
@@ -1,3 +1,4 @@
+import type { RepoIconPickResult } from '../../shared/repo-icon-pick-failure-copy'
 import { ipcRenderer } from 'electron'
 import type {
   ShellOpenExternalEditorRequest,
@@ -41,7 +42,7 @@ export const shellApi = {
 
   pickImage: (): Promise<string | null> => ipcRenderer.invoke('shell:pickImage'),
 
-  pickRepoIconImage: (): Promise<{ dataUrl: string; fileName: string } | null> =>
+  pickRepoIconImage: (): Promise<RepoIconPickResult> =>
     ipcRenderer.invoke('shell:pickRepoIconImage'),
 
   pickAudio: (): Promise<string | null> => ipcRenderer.invoke('shell:pickAudio'),
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
new file mode 100644
index 00000000000..c1e6da6d212
--- /dev/null
+++ b/src/renderer/src/components/pet/pet-import-failure-text.test.ts
@@ -0,0 +1,45 @@
+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/pet/pet-import-failure-text.ts b/src/renderer/src/components/pet/pet-import-failure-text.ts
new file mode 100644
index 00000000000..80f8f381735
--- /dev/null
+++ b/src/renderer/src/components/pet/pet-import-failure-text.ts
@@ -0,0 +1,156 @@
+import { translate } from '@/i18n/i18n'
+import type { CustomPet } from '../../../../shared/pet-types'
+import {
+  CUSTOM_PET_DEFAULT_LABEL,
+  PET_BUNDLE_DEFAULT_LABEL,
+  PET_IMPORT_FAILURE_COPY as EN,
+  type PetImportFailure,
+  type PetImportFailureCode
+} from '../../../../shared/pet-import-failure-copy'
+
+type Values = {
+  text: (name: string) => string | null
+  count: (name: string) => number | null
+}
+
+// null = required values missing; caller shows main's English `error`.
+const COPY: Record<PetImportFailureCode, (values: Values) => string | null> = {
+  unsupportedFile: () => translate('pet.importErrors.unsupportedFile', EN.unsupportedFile),
+  fileUnreadable: () => translate('pet.importErrors.fileUnreadable', EN.fileUnreadable),
+  notAFile: () => translate('pet.importErrors.notAFile', EN.notAFile),
+  fileTooLarge: ({ text, count }) => {
+    const size = text('size')
+    const max = count('max')
+    return size === null || max === null
+      ? null
+      : translate('pet.importErrors.fileTooLarge', EN.fileTooLarge, { size, max })
+  },
+  saveFailed: () => translate('pet.importErrors.saveFailed', EN.saveFailed),
+  pathUnreadable: () => translate('pet.importErrors.pathUnreadable', EN.pathUnreadable),
+  manifestMissing: () => translate('pet.importErrors.manifestMissing', EN.manifestMissing),
+  manifestInvalid: () => translate('pet.importErrors.manifestInvalid', EN.manifestInvalid),
+  manifestSymlink: () => translate('pet.importErrors.manifestSymlink', EN.manifestSymlink),
+  manifestParseFailed: ({ text }) => {
+    const detail = text('detail')
+    return detail === null
+      ? null
+      : translate('pet.importErrors.manifestParseFailed', EN.manifestParseFailed, { detail })
+  },
+  bundleSaveFailed: () => translate('pet.importErrors.bundleSaveFailed', EN.bundleSaveFailed),
+  sheetPathNotRelative: () =>
+    translate('pet.importErrors.sheetPathNotRelative', EN.sheetPathNotRelative),
+  sheetPathIsRoot: () => translate('pet.importErrors.sheetPathIsRoot', EN.sheetPathIsRoot),
+  sheetPathEscapes: () => translate('pet.importErrors.sheetPathEscapes', EN.sheetPathEscapes),
+  sheetSymlink: () => translate('pet.importErrors.sheetSymlink', EN.sheetSymlink),
+  sheetUnsupportedType: () =>
+    translate('pet.importErrors.sheetUnsupportedType', EN.sheetUnsupportedType),
+  sheetNotFound: () => translate('pet.importErrors.sheetNotFound', EN.sheetNotFound),
+  sheetNotAFile: () => translate('pet.importErrors.sheetNotAFile', EN.sheetNotAFile),
+  sheetTooLarge: ({ text }) => {
+    const size = text('size')
+    return size === null
+      ? null
+      : translate('pet.importErrors.sheetTooLarge', EN.sheetTooLarge, { size })
+  },
+  sheetSizeLimitExceeded: () =>
+    translate('pet.importErrors.sheetSizeLimitExceeded', EN.sheetSizeLimitExceeded),
+  sheetUndecodable: () => translate('pet.importErrors.sheetUndecodable', EN.sheetUndecodable),
+  sheetFrameMismatch: ({ count }) => {
+    const sheetWidth = count('sheetWidth')
+    const sheetHeight = count('sheetHeight')
+    const frameWidth = count('frameWidth')
+    const frameHeight = count('frameHeight')
+    return sheetWidth === null ||
+      sheetHeight === null ||
+      frameWidth === null ||
+      frameHeight === null
+      ? null
+      : translate('pet.importErrors.sheetFrameMismatch', EN.sheetFrameMismatch, {
+          sheetWidth,
+          sheetHeight,
+          frameWidth,
+          frameHeight
+        })
+  },
+  animationRowOutOfRange: ({ text, count }) => {
+    const name = text('name')
+    const row = count('row')
+    const rows = count('rows')
+    return name === null || row === null || rows === null
+      ? null
+      : translate('pet.importErrors.animationRowOutOfRange', EN.animationRowOutOfRange, {
+          name,
+          row,
+          rows
+        })
+  },
+  animationTooManyFrames: ({ text, count }) => {
+    const name = text('name')
+    const frames = count('frames')
+    const columns = count('columns')
+    return name === null || frames === null || columns === null
+      ? null
+      : translate('pet.importErrors.animationTooManyFrames', EN.animationTooManyFrames, {
+          name,
+          frames,
+          columns
+        })
+  },
+  animationDurationMismatch: ({ text, count }) => {
+    const name = text('name')
+    const durations = count('durations')
+    const frames = count('frames')
+    return name === null || durations === null || frames === null
+      ? null
+      : translate('pet.importErrors.animationDurationMismatch', EN.animationDurationMismatch, {
+          name,
+          durations,
+          frames
+        })
+  },
+  defaultAnimationMissing: ({ text }) => {
+    const name = text('name')
+    return name === null
+      ? null
+      : translate('pet.importErrors.defaultAnimationMissing', EN.defaultAnimationMissing, {
+          name
+        })
+  }
+}
+
+function isPetImportFailureCode(code: unknown): code is PetImportFailureCode {
+  return typeof code === 'string' && Object.hasOwn(COPY, code)
+}
+
+/** Unknown or uncoded failures show main's English text. */
+export function petImportFailureText(failure: PetImportFailure): string {
+  if (!isPetImportFailureCode(failure.errorCode)) {
+    return failure.error
+  }
+  const params = failure.errorParams ?? {}
+  const read = (name: string): unknown => (Object.hasOwn(params, name) ? params[name] : undefined)
+  return (
+    COPY[failure.errorCode]({
+      text: (name) => {
+        const value = name === 'detail' ? failure.errorDetail : read(name)
+        return typeof value === 'string' ? value : null
+      },
+      count: (name) => {
+        const value = read(name)
+        return typeof value === 'number' && Number.isFinite(value) ? value : null
+      }
+    }) ?? failure.error
+  )
+}
+
+/** Default names are stored in English; show them in the UI language. */
+export function customPetLabel(pet: Pick<CustomPet, 'label' | 'kind'>): string {
+  if (pet.kind === 'bundle') {
+    return pet.label === PET_BUNDLE_DEFAULT_LABEL
+      ? translate('pet.defaultLabels.bundle', PET_BUNDLE_DEFAULT_LABEL)
+      : pet.label
+  }
+  return pet.label === CUSTOM_PET_DEFAULT_LABEL
+    ? translate('pet.defaultLabels.image', CUSTOM_PET_DEFAULT_LABEL)
+    : pet.label
+}
diff --git a/src/renderer/src/components/settings/repository/identity/RepositoryIconTabs.tsx b/src/renderer/src/components/settings/repository/identity/RepositoryIconTabs.tsx
index b33406eceda..375fb55ffb1 100644
--- a/src/renderer/src/components/settings/repository/identity/RepositoryIconTabs.tsx
+++ b/src/renderer/src/components/settings/repository/identity/RepositoryIconTabs.tsx
@@ -11,6 +11,7 @@ import { getRepoLucideIconOptions } from '../../../repo/repo-icon'
 import { useMountedRef } from '@/hooks/useMountedRef'
 import { translate } from '@/i18n/i18n'
 import { lazyWithRetry } from '@/lib/lazy-with-retry'
+import { repoIconPickFailureText } from './repo-icon-pick-failure-text'
 
 const RepositoryIconEmojiPicker = lazyWithRetry(
   () =>
@@ -46,6 +47,10 @@ export function RepositoryIconTabs({
       if (!result || !mountedRef.current) {
         return
       }
+      if ('error' in result) {
+        toast.error(repoIconPickFailureText(result))
+        return
+      }
       onSetIcon({
         type: 'image',
         src: result.dataUrl,
diff --git a/src/renderer/src/components/settings/repository/identity/repo-icon-pick-failure-text.ts b/src/renderer/src/components/settings/repository/identity/repo-icon-pick-failure-text.ts
new file mode 100644
index 00000000000..7bad43a9d6b
--- /dev/null
+++ b/src/renderer/src/components/settings/repository/identity/repo-icon-pick-failure-text.ts
@@ -0,0 +1,20 @@
+import { translate } from '@/i18n/i18n'
+import {
+  REPO_ICON_PICK_FAILURE_COPY as EN,
+  type RepoIconPickFailure,
+  type RepoIconPickFailureCode
+} from '../../../../../../shared/repo-icon-pick-failure-copy'
+
+const COPY: Record<RepoIconPickFailureCode, () => string> = {
+  notPng: () => translate('settings.repository.iconPickErrors.notPng', EN.notPng),
+  tooLarge: () => translate('settings.repository.iconPickErrors.tooLarge', EN.tooLarge)
+}
+
+function isRepoIconPickFailureCode(code: unknown): code is RepoIconPickFailureCode {
+  return typeof code === 'string' && Object.hasOwn(COPY, code)
+}
+
+/** Unknown or uncoded failures show main's English text. */
+export function repoIconPickFailureText(failure: RepoIconPickFailure): string {
+  return isRepoIconPickFailureCode(failure.errorCode) ? COPY[failure.errorCode]() : failure.error
+}
diff --git a/src/renderer/src/components/status-bar/PetStatusSegment.tsx b/src/renderer/src/components/status-bar/PetStatusSegment.tsx
index b1881267c9b..11352eb9474 100644
--- a/src/renderer/src/components/status-bar/PetStatusSegment.tsx
+++ b/src/renderer/src/components/status-bar/PetStatusSegment.tsx
@@ -18,6 +18,8 @@ import { BUNDLED_PET, BUNDLED_PETS, findBundledPet, isBundledPetId } from '../pe
 import { PET_SIZE_MAX, PET_SIZE_MIN } from '../../../../shared/pet-types'
 import { translate } from '@/i18n/i18n'
 import { useUiLanguageRevision } from '@/i18n/use-ui-language-revision'
+import { isPetImportFailure } from '../../../../shared/pet-import-failure-copy'
+import { customPetLabel, petImportFailureText } from '../pet/pet-import-failure-text'
 
 // Keep visibility separate from experimental enablement so users can dismiss the pet without revisiting Settings.
 function PetStatusSegmentInner(): React.JSX.Element {
@@ -37,7 +39,11 @@ function PetStatusSegmentInner(): React.JSX.Element {
   const bundled = isBundledPetId(petId)
   const activeBundled = bundled ? (findBundledPet(petId) ?? BUNDLED_PET) : null
   const activeCustom = bundled ? null : customPets.find((m) => m.id === petId)
-  const activeLabel = activeBundled ? activeBundled.label : (activeCustom?.label ?? 'Pet')
+  const activeLabel = activeBundled
+    ? activeBundled.label
+    : activeCustom
+      ? customPetLabel(activeCustom)
+      : 'Pet'
   const label = petVisible ? activeLabel : `${activeLabel} hidden`
 
   const handleImport = async (): Promise<void> => {
@@ -58,6 +64,10 @@ function PetStatusSegmentInner(): React.JSX.Element {
       if (!model) {
         return
       }
+      if (isPetImportFailure(model)) {
+        toast.error(petImportFailureText(model))
+        return
+      }
       addCustomPet(model)
       if (!petVisible) {
         setPetVisible(true)
@@ -91,6 +101,10 @@ function PetStatusSegmentInner(): React.JSX.Element {
       if (!model) {
         return
       }
+      if (isPetImportFailure(model)) {
+        toast.error(petImportFailureText(model))
+        return
+      }
       addCustomPet(model)
       if (!petVisible) {
         setPetVisible(true)
@@ -214,14 +228,14 @@ function PetStatusSegmentInner(): React.JSX.Element {
                     <span className="flex w-4 items-center justify-center">
                       {selected ? <Check className="size-3.5" aria-hidden /> : null}
                     </span>
-                    <span className="flex-1 truncate">{model.label}</span>
+                    <span className="flex-1 truncate">{customPetLabel(model)}</span>
                     <button
                       type="button"
                       className="ml-2 flex size-5 items-center justify-center rounded text-muted-foreground hover:bg-destructive/15 hover:text-destructive"
                       aria-label={translate(
                         'auto.components.status.bar.PetStatusSegment.3668339495',
                         'Remove {{value0}}',
-                        { value0: model.label }
+                        { value0: customPetLabel(model) }
                       )}
                       onClick={(event) => {
                         event.stopPropagation()
diff --git a/src/renderer/src/i18n/en-runtime-required.json b/src/renderer/src/i18n/en-runtime-required.json
index c125faff4fd..0dd2faebfc6 100644
--- a/src/renderer/src/i18n/en-runtime-required.json
+++ b/src/renderer/src/i18n/en-runtime-required.json
@@ -1996,6 +1996,40 @@
   "menu": {
     "quitApp": "Quit {{appName}}"
   },
+  "pet": {
+    "defaultLabels": {
+      "bundle": "Pet bundle",
+      "image": "Custom pet"
+    },
+    "importErrors": {
+      "animationDurationMismatch": "Animation \"{{name}}\" declares {{durations}} frame durations but {{frames}} frames.",
+      "animationRowOutOfRange": "Animation \"{{name}}\" references row {{row}} but sheet has {{rows}}.",
+      "animationTooManyFrames": "Animation \"{{name}}\" has {{frames}} frames but sheet only has {{columns}} columns.",
+      "bundleSaveFailed": "Could not save the pet bundle.",
+      "defaultAnimationMissing": "defaultAnimation \"{{name}}\" not in animations.",
+      "fileTooLarge": "File is too large ({{size}} MB). Max is {{max}} MB.",
+      "fileUnreadable": "Could not read the selected file.",
+      "manifestInvalid": "pet.json is invalid.",
+      "manifestMissing": "Bundle is missing pet.json.",
+      "manifestParseFailed": "Invalid pet.json: {{detail}}",
+      "manifestSymlink": "pet.json must not be a symlink.",
+      "notAFile": "Selected path is not a file",
+      "pathUnreadable": "Could not read the selected path.",
+      "saveFailed": "Could not save the pet.",
+      "sheetFrameMismatch": "Spritesheet {{sheetWidth}}×{{sheetHeight}} is not a clean multiple of frame {{frameWidth}}×{{frameHeight}}.",
+      "sheetNotAFile": "Spritesheet path is not a file.",
+      "sheetNotFound": "Spritesheet file not found.",
+      "sheetPathEscapes": "spritesheetPath escapes the bundle.",
+      "sheetPathIsRoot": "spritesheetPath must point to a file, not the bundle root.",
+      "sheetPathNotRelative": "spritesheetPath must be relative to the bundle.",
+      "sheetSizeLimitExceeded": "Spritesheet exceeded the size limit.",
+      "sheetSymlink": "spritesheet must not be a symlink.",
+      "sheetTooLarge": "Spritesheet is too large ({{size}} MB).",
+      "sheetUndecodable": "Could not decode the spritesheet image.",
+      "sheetUnsupportedType": "Spritesheet must be a PNG, APNG, JPG, GIF, or WebP.",
+      "unsupportedFile": "Unsupported file. Pick a PNG, APNG, JPG, GIF, WebP, or SVG."
+    }
+  },
   "projectViews": {
     "error": {
       "tooLargeCount_one": "This view has {{count}} item — too large to render in Orca. Narrow the view's filter on GitHub.",
@@ -2085,6 +2119,12 @@
         "unsupportedProtocol": "Use an http, https, socks, socks4, or socks5 proxy URL."
       }
     },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Repo icons must be PNG files.",
+        "tooLarge": "Repo icon image must be 256KB or smaller."
+      }
+    },
     "shortcuts": {
       "diagnostics": {
         "conflictingOverrides": "Conflicting custom shortcuts were ignored: {{actions}}.",
diff --git a/src/renderer/src/i18n/locales/de.json b/src/renderer/src/i18n/locales/de.json
index fa5dea0bdae..027821a95cc 100644
--- a/src/renderer/src/i18n/locales/de.json
+++ b/src/renderer/src/i18n/locales/de.json
@@ -874,6 +874,12 @@
         "discardFailed": "Datei zur Prüfung konnte nicht verworfen werden",
         "deleteFailed": "Gesendete Diagnosedaten konnten nicht gelöscht werden"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Repository-Symbole müssen PNG-Dateien sein.",
+        "tooLarge": "Das Bild für das Repository-Symbol darf höchstens 256 KB groß sein."
+      }
     }
   },
   "menu": {
@@ -22326,5 +22332,39 @@
     "repairing": "Orca repariert gerade die Berechtigungen.",
     "repairFailed": "Orca konnte sie nicht reparieren. Meist sind für den Ordner Administratorrechte erforderlich.",
     "runCommands": "Diese Befehle in einer Eingabeaufforderung mit Administratorrechten ausführen und Orca anschließend erneut starten:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Nicht unterstützte Datei. PNG, APNG, JPG, GIF, WebP oder SVG auswählen.",
+      "fileUnreadable": "Die ausgewählte Datei konnte nicht gelesen werden.",
+      "notAFile": "Der ausgewählte Pfad ist keine Datei",
+      "fileTooLarge": "Die Datei ist zu groß ({{size}} MB). Maximal {{max}} MB.",
+      "saveFailed": "Das Haustier konnte nicht gespeichert werden.",
+      "pathUnreadable": "Der ausgewählte Pfad konnte nicht gelesen werden.",
+      "manifestMissing": "Im Paket fehlt pet.json.",
+      "manifestInvalid": "pet.json ist ungültig.",
+      "manifestSymlink": "pet.json darf kein symbolischer Link sein.",
+      "manifestParseFailed": "Ungültige pet.json: {{detail}}",
+      "bundleSaveFailed": "Das Haustierpaket konnte nicht gespeichert werden.",
+      "sheetPathNotRelative": "spritesheetPath muss relativ zum Paket sein.",
+      "sheetPathIsRoot": "spritesheetPath muss auf eine Datei verweisen, nicht auf das Stammverzeichnis des Pakets.",
+      "sheetPathEscapes": "spritesheetPath liegt außerhalb des Pakets.",
+      "sheetSymlink": "Das Spritesheet darf kein symbolischer Link sein.",
+      "sheetUnsupportedType": "Das Spritesheet muss eine PNG-, APNG-, JPG-, GIF- oder WebP-Datei sein.",
+      "sheetNotFound": "Spritesheet-Datei nicht gefunden.",
+      "sheetNotAFile": "Der Spritesheet-Pfad ist keine Datei.",
+      "sheetTooLarge": "Das Spritesheet ist zu groß ({{size}} MB).",
+      "sheetSizeLimitExceeded": "Das Spritesheet überschreitet die Größenbegrenzung.",
+      "sheetUndecodable": "Das Spritesheet-Bild konnte nicht dekodiert werden.",
+      "sheetFrameMismatch": "Spritesheet {{sheetWidth}}×{{sheetHeight}} ist kein ganzzahliges Vielfaches der Frame-Größe {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "Animation „{{name}}“ verweist auf Zeile {{row}}, aber die Zeilenanzahl im Spritesheet beträgt nur {{rows}}.",
+      "animationTooManyFrames": "Die Frame-Anzahl der Animation „{{name}}“ ({{frames}}) übersteigt die Spaltenanzahl des Spritesheets ({{columns}}).",
+      "animationDurationMismatch": "Bei der Animation „{{name}}“ stimmt die Anzahl der angegebenen Frame-Dauern ({{durations}}) nicht mit der Frame-Anzahl ({{frames}}) überein.",
+      "defaultAnimationMissing": "defaultAnimation „{{name}}“ ist nicht in animations enthalten."
+    },
+    "defaultLabels": {
+      "image": "Benutzerdefiniertes Haustier",
+      "bundle": "Haustierpaket"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/en.json b/src/renderer/src/i18n/locales/en.json
index 285a94932b4..c30c2cc3e47 100644
--- a/src/renderer/src/i18n/locales/en.json
+++ b/src/renderer/src/i18n/locales/en.json
@@ -892,6 +892,12 @@
         "discardFailed": "Could not discard review file",
         "deleteFailed": "Could not delete sent diagnostics"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Repo icons must be PNG files.",
+        "tooLarge": "Repo icon image must be 256KB or smaller."
+      }
     }
   },
   "menu": {
@@ -22790,5 +22796,39 @@
     "repairing": "Orca is repairing the permissions now.",
     "repairFailed": "Orca could not repair them, which usually means the folder needs an administrator.",
     "runCommands": "Run these in an Administrator Command Prompt, then relaunch Orca:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Unsupported file. Pick a PNG, APNG, JPG, GIF, WebP, or SVG.",
+      "fileUnreadable": "Could not read the selected file.",
+      "notAFile": "Selected path is not a file",
+      "fileTooLarge": "File is too large ({{size}} MB). Max is {{max}} MB.",
+      "saveFailed": "Could not save the pet.",
+      "pathUnreadable": "Could not read the selected path.",
+      "manifestMissing": "Bundle is missing pet.json.",
+      "manifestInvalid": "pet.json is invalid.",
+      "manifestSymlink": "pet.json must not be a symlink.",
+      "manifestParseFailed": "Invalid pet.json: {{detail}}",
+      "bundleSaveFailed": "Could not save the pet bundle.",
+      "sheetPathNotRelative": "spritesheetPath must be relative to the bundle.",
+      "sheetPathIsRoot": "spritesheetPath must point to a file, not the bundle root.",
+      "sheetPathEscapes": "spritesheetPath escapes the bundle.",
+      "sheetSymlink": "spritesheet must not be a symlink.",
+      "sheetUnsupportedType": "Spritesheet must be a PNG, APNG, JPG, GIF, or WebP.",
+      "sheetNotFound": "Spritesheet file not found.",
+      "sheetNotAFile": "Spritesheet path is not a file.",
+      "sheetTooLarge": "Spritesheet is too large ({{size}} MB).",
+      "sheetSizeLimitExceeded": "Spritesheet exceeded the size limit.",
+      "sheetUndecodable": "Could not decode the spritesheet image.",
+      "sheetFrameMismatch": "Spritesheet {{sheetWidth}}×{{sheetHeight}} is not a clean multiple of frame {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "Animation \"{{name}}\" references row {{row}} but sheet has {{rows}}.",
+      "animationTooManyFrames": "Animation \"{{name}}\" has {{frames}} frames but sheet only has {{columns}} columns.",
+      "animationDurationMismatch": "Animation \"{{name}}\" declares {{durations}} frame durations but {{frames}} frames.",
+      "defaultAnimationMissing": "defaultAnimation \"{{name}}\" not in animations."
+    },
+    "defaultLabels": {
+      "image": "Custom pet",
+      "bundle": "Pet bundle"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/es.json b/src/renderer/src/i18n/locales/es.json
index f78ae784d2b..a1c85499876 100644
--- a/src/renderer/src/i18n/locales/es.json
+++ b/src/renderer/src/i18n/locales/es.json
@@ -478,6 +478,12 @@
         "discardFailed": "No se pudo descartar el archivo de revisión",
         "deleteFailed": "No se pudieron eliminar los diagnósticos enviados"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Los iconos del repositorio deben ser archivos PNG.",
+        "tooLarge": "La imagen del icono del repositorio debe tener un tamaño máximo de 256 KB."
+      }
     }
   },
   "menu": {
@@ -22944,5 +22950,39 @@
     "repairing": "Orca está reparando los permisos.",
     "repairFailed": "Orca no pudo repararlos, lo que normalmente significa que la carpeta requiere permisos de administrador.",
     "runCommands": "Ejecuta estos comandos en un Símbolo del sistema abierto como administrador y luego vuelve a iniciar Orca:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Archivo no compatible. Elige un PNG, APNG, JPG, GIF, WebP o SVG.",
+      "fileUnreadable": "No se pudo leer el archivo seleccionado.",
+      "notAFile": "La ruta seleccionada no es un archivo",
+      "fileTooLarge": "El archivo es demasiado grande ({{size}} MB). El máximo es {{max}} MB.",
+      "saveFailed": "No se pudo guardar la mascota.",
+      "pathUnreadable": "No se pudo leer la ruta seleccionada.",
+      "manifestMissing": "Falta pet.json en el bundle.",
+      "manifestInvalid": "pet.json no es válido.",
+      "manifestSymlink": "pet.json no puede ser un enlace simbólico.",
+      "manifestParseFailed": "pet.json no válido: {{detail}}",
+      "bundleSaveFailed": "No se pudo guardar el bundle de mascota.",
+      "sheetPathNotRelative": "spritesheetPath debe ser una ruta relativa al bundle.",
+      "sheetPathIsRoot": "spritesheetPath debe apuntar a un archivo, no a la raíz del bundle.",
+      "sheetPathEscapes": "spritesheetPath apunta fuera del bundle.",
+      "sheetSymlink": "La hoja de sprites no puede ser un enlace simbólico.",
+      "sheetUnsupportedType": "La hoja de sprites debe ser un archivo PNG, APNG, JPG, GIF o WebP.",
+      "sheetNotFound": "No se encontró el archivo de la hoja de sprites.",
+      "sheetNotAFile": "La ruta de la hoja de sprites no es un archivo.",
+      "sheetTooLarge": "La hoja de sprites es demasiado grande ({{size}} MB).",
+      "sheetSizeLimitExceeded": "La hoja de sprites superó el límite de tamaño.",
+      "sheetUndecodable": "No se pudo decodificar la imagen de la hoja de sprites.",
+      "sheetFrameMismatch": "La hoja de sprites de {{sheetWidth}}×{{sheetHeight}} no es un múltiplo exacto del fotograma de {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "La animación «{{name}}» hace referencia a la fila {{row}}, pero la hoja solo tiene {{rows}}.",
+      "animationTooManyFrames": "El número de fotogramas de la animación «{{name}}» ({{frames}}) supera el número de columnas de la hoja ({{columns}}).",
+      "animationDurationMismatch": "En la animación «{{name}}», el número de duraciones de fotograma declaradas ({{durations}}) no coincide con el número de fotogramas ({{frames}}).",
+      "defaultAnimationMissing": "defaultAnimation «{{name}}» no está en animations."
+    },
+    "defaultLabels": {
+      "image": "Mascota personalizada",
+      "bundle": "Bundle de mascota"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/fr.json b/src/renderer/src/i18n/locales/fr.json
index 4438bb85f00..94f889fa32a 100644
--- a/src/renderer/src/i18n/locales/fr.json
+++ b/src/renderer/src/i18n/locales/fr.json
@@ -698,6 +698,12 @@
         "discardFailed": "Impossible d’abandonner le fichier de révision",
         "deleteFailed": "Impossible de supprimer les diagnostics envoyés"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Les icônes de dépôt doivent être des fichiers PNG.",
+        "tooLarge": "L’image de l’icône du dépôt doit faire 256 Ko maximum."
+      }
     }
   },
   "menu": {
@@ -22944,5 +22950,39 @@
     "repairing": "Orca corrige les autorisations.",
     "repairFailed": "Orca n'a pas pu les corriger, ce qui signifie généralement que le dossier nécessite des droits d'administrateur.",
     "runCommands": "Exécutez ces commandes dans une invite de commandes ouverte en tant qu'administrateur, puis relancez Orca :"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Fichier non pris en charge. Choisissez un PNG, APNG, JPG, GIF, WebP ou SVG.",
+      "fileUnreadable": "Impossible de lire le fichier sélectionné.",
+      "notAFile": "Le chemin sélectionné n’est pas un fichier",
+      "fileTooLarge": "Le fichier est trop volumineux ({{size}} Mo). Maximum : {{max}} Mo.",
+      "saveFailed": "Impossible d’enregistrer le compagnon.",
+      "pathUnreadable": "Impossible de lire le chemin sélectionné.",
+      "manifestMissing": "Le bundle ne contient pas pet.json.",
+      "manifestInvalid": "pet.json n’est pas valide.",
+      "manifestSymlink": "pet.json ne doit pas être un lien symbolique.",
+      "manifestParseFailed": "pet.json non valide : {{detail}}",
+      "bundleSaveFailed": "Impossible d’enregistrer le bundle de compagnon.",
+      "sheetPathNotRelative": "spritesheetPath doit être relatif au bundle.",
+      "sheetPathIsRoot": "spritesheetPath doit pointer vers un fichier, pas vers la racine du bundle.",
+      "sheetPathEscapes": "spritesheetPath pointe en dehors du bundle.",
+      "sheetSymlink": "La feuille de sprites ne doit pas être un lien symbolique.",
+      "sheetUnsupportedType": "La feuille de sprites doit être un fichier PNG, APNG, JPG, GIF ou WebP.",
+      "sheetNotFound": "Fichier de feuille de sprites introuvable.",
+      "sheetNotAFile": "Le chemin de la feuille de sprites n’est pas un fichier.",
+      "sheetTooLarge": "La feuille de sprites est trop volumineuse ({{size}} Mo).",
+      "sheetSizeLimitExceeded": "La feuille de sprites a dépassé la taille limite.",
+      "sheetUndecodable": "Impossible de décoder l’image de la feuille de sprites.",
+      "sheetFrameMismatch": "La feuille de sprites {{sheetWidth}}×{{sheetHeight}} n’est pas un multiple exact du format d’image {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "L’animation « {{name}} » fait référence à la ligne {{row}}, mais la feuille n’en a que {{rows}}.",
+      "animationTooManyFrames": "Le nombre d’images de l’animation « {{name}} » ({{frames}}) dépasse le nombre de colonnes de la feuille ({{columns}}).",
+      "animationDurationMismatch": "Pour l’animation « {{name}} », le nombre de durées d’image déclarées ({{durations}}) ne correspond pas au nombre d’images ({{frames}}).",
+      "defaultAnimationMissing": "defaultAnimation « {{name}} » n’est pas dans animations."
+    },
+    "defaultLabels": {
+      "image": "Compagnon personnalisé",
+      "bundle": "Bundle de compagnon"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/ja.json b/src/renderer/src/i18n/locales/ja.json
index 10f3b4bc511..72dbd2f47e9 100644
--- a/src/renderer/src/i18n/locales/ja.json
+++ b/src/renderer/src/i18n/locales/ja.json
@@ -474,6 +474,12 @@
         "discardFailed": "確認用ファイルを破棄できませんでした",
         "deleteFailed": "送信済みの診断情報を削除できませんでした"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "リポジトリアイコンには PNG ファイルを使用してください。",
+        "tooLarge": "リポジトリアイコンの画像は 256 KB 以下にしてください。"
+      }
     }
   },
   "menu": {
@@ -22322,5 +22328,39 @@
     "repairing": "Orca が権限を修復しています。",
     "repairFailed": "Orca は権限を修復できませんでした。通常、フォルダーへの操作に管理者権限が必要な場合に発生します。",
     "runCommands": "管理者権限のコマンドプロンプトで次のコマンドを実行し、Orca を再起動してください:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "未対応のファイルです。PNG、APNG、JPG、GIF、WebP、SVG のいずれかを選択してください。",
+      "fileUnreadable": "選択したファイルを読み取れませんでした。",
+      "notAFile": "選択したパスはファイルではありません",
+      "fileTooLarge": "ファイルが大きすぎます（{{size}} MB）。上限は {{max}} MB です。",
+      "saveFailed": "ペットを保存できませんでした。",
+      "pathUnreadable": "選択したパスを読み取れませんでした。",
+      "manifestMissing": "バンドルに pet.json がありません。",
+      "manifestInvalid": "pet.json が無効です。",
+      "manifestSymlink": "pet.json はシンボリックリンクにできません。",
+      "manifestParseFailed": "無効な pet.json: {{detail}}",
+      "bundleSaveFailed": "ペットバンドルを保存できませんでした。",
+      "sheetPathNotRelative": "spritesheetPath はバンドルからの相対パスである必要があります。",
+      "sheetPathIsRoot": "spritesheetPath はバンドルのルートではなく、ファイルを指す必要があります。",
+      "sheetPathEscapes": "spritesheetPath がバンドルの外を指しています。",
+      "sheetSymlink": "スプライトシートはシンボリックリンクにできません。",
+      "sheetUnsupportedType": "スプライトシートは PNG、APNG、JPG、GIF、WebP のいずれかである必要があります。",
+      "sheetNotFound": "スプライトシートのファイルが見つかりません。",
+      "sheetNotAFile": "スプライトシートのパスはファイルではありません。",
+      "sheetTooLarge": "スプライトシートが大きすぎます（{{size}} MB）。",
+      "sheetSizeLimitExceeded": "スプライトシートがサイズ上限を超えました。",
+      "sheetUndecodable": "スプライトシート画像をデコードできませんでした。",
+      "sheetFrameMismatch": "スプライトシートのサイズ {{sheetWidth}}×{{sheetHeight}} はフレームサイズ {{frameWidth}}×{{frameHeight}} の整数倍ではありません。",
+      "animationRowOutOfRange": "アニメーション「{{name}}」は {{row}} 行目を参照していますが、シートには {{rows}} 行しかありません。",
+      "animationTooManyFrames": "アニメーション「{{name}}」には {{frames}} フレームありますが、シートには {{columns}} 列しかありません。",
+      "animationDurationMismatch": "アニメーション「{{name}}」で指定されたフレーム時間は {{durations}} 個ですが、フレーム数は {{frames}} です。",
+      "defaultAnimationMissing": "defaultAnimation「{{name}}」が animations にありません。"
+    },
+    "defaultLabels": {
+      "image": "カスタムペット",
+      "bundle": "ペットバンドル"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/ko.json b/src/renderer/src/i18n/locales/ko.json
index 6c3c7d8b029..16a4956779f 100644
--- a/src/renderer/src/i18n/locales/ko.json
+++ b/src/renderer/src/i18n/locales/ko.json
@@ -474,6 +474,12 @@
         "discardFailed": "검토 파일을 버리지 못했습니다",
         "deleteFailed": "전송한 진단 정보를 삭제하지 못했습니다"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "저장소 아이콘은 PNG 파일이어야 합니다.",
+        "tooLarge": "저장소 아이콘 이미지는 256 KB 이하여야 합니다."
+      }
     }
   },
   "menu": {
@@ -22322,5 +22328,39 @@
     "repairing": "Orca가 권한을 복구하고 있습니다.",
     "repairFailed": "Orca가 권한을 복구하지 못했습니다. 일반적으로 해당 폴더에 관리자 권한이 필요하다는 뜻입니다.",
     "runCommands": "관리자 권한으로 연 명령 프롬프트에서 다음 명령을 실행한 후 Orca를 다시 실행하세요:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "지원하지 않는 파일입니다. PNG, APNG, JPG, GIF, WebP 또는 SVG를 선택하세요.",
+      "fileUnreadable": "선택한 파일을 읽지 못했습니다.",
+      "notAFile": "선택한 경로가 파일이 아닙니다",
+      "fileTooLarge": "파일이 너무 큽니다({{size}} MB). 최대 크기는 {{max}} MB입니다.",
+      "saveFailed": "애완동물을 저장하지 못했습니다.",
+      "pathUnreadable": "선택한 경로를 읽지 못했습니다.",
+      "manifestMissing": "번들에 pet.json이 없습니다.",
+      "manifestInvalid": "pet.json이 유효하지 않습니다.",
+      "manifestSymlink": "pet.json은 심볼릭 링크일 수 없습니다.",
+      "manifestParseFailed": "유효하지 않은 pet.json: {{detail}}",
+      "bundleSaveFailed": "애완동물 번들을 저장하지 못했습니다.",
+      "sheetPathNotRelative": "spritesheetPath는 번들 기준 상대 경로여야 합니다.",
+      "sheetPathIsRoot": "spritesheetPath는 번들 루트가 아닌 파일을 가리켜야 합니다.",
+      "sheetPathEscapes": "spritesheetPath가 번들 외부를 가리킵니다.",
+      "sheetSymlink": "스프라이트 시트는 심볼릭 링크일 수 없습니다.",
+      "sheetUnsupportedType": "스프라이트 시트는 PNG, APNG, JPG, GIF 또는 WebP 파일이어야 합니다.",
+      "sheetNotFound": "스프라이트 시트 파일을 찾을 수 없습니다.",
+      "sheetNotAFile": "스프라이트 시트 경로가 파일이 아닙니다.",
+      "sheetTooLarge": "스프라이트 시트가 너무 큽니다({{size}} MB).",
+      "sheetSizeLimitExceeded": "스프라이트 시트가 크기 제한을 초과했습니다.",
+      "sheetUndecodable": "스프라이트 시트 이미지를 디코딩하지 못했습니다.",
+      "sheetFrameMismatch": "스프라이트 시트({{sheetWidth}}×{{sheetHeight}})의 크기가 프레임({{frameWidth}}×{{frameHeight}}) 크기의 정수배가 아닙니다.",
+      "animationRowOutOfRange": "\"{{name}}\" 애니메이션은 {{row}}행을 참조하지만 시트에는 {{rows}}행만 있습니다.",
+      "animationTooManyFrames": "애니메이션 \"{{name}}\"에 {{frames}}개의 프레임이 있지만 시트에는 {{columns}}개의 열만 있습니다.",
+      "animationDurationMismatch": "애니메이션 \"{{name}}\"에 프레임 지속 시간이 {{durations}}개 지정되어 있지만 프레임은 {{frames}}개입니다.",
+      "defaultAnimationMissing": "defaultAnimation으로 지정된 \"{{name}}\" 애니메이션이 animations에 없습니다."
+    },
+    "defaultLabels": {
+      "image": "사용자 정의 애완동물",
+      "bundle": "애완동물 번들"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/pt.json b/src/renderer/src/i18n/locales/pt.json
index 623f8ba53b0..82d8746029b 100644
--- a/src/renderer/src/i18n/locales/pt.json
+++ b/src/renderer/src/i18n/locales/pt.json
@@ -1483,6 +1483,12 @@
         "discardFailed": "Não foi possível descartar o arquivo de revisão",
         "deleteFailed": "Não foi possível excluir os diagnósticos enviados"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Os ícones do repositório devem ser arquivos PNG.",
+        "tooLarge": "A imagem do ícone do repositório deve ter no máximo 256 KB."
+      }
     }
   },
   "auto": {
@@ -22757,5 +22763,39 @@
     "repairing": "O Orca está corrigindo as permissões.",
     "repairFailed": "O Orca não conseguiu corrigi-las, o que geralmente significa que a pasta exige permissões de administrador.",
     "runCommands": "Execute estes comandos em um Prompt de Comando como administrador e abra o Orca novamente:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Arquivo não compatível. Escolha um PNG, APNG, JPG, GIF, WebP ou SVG.",
+      "fileUnreadable": "Não foi possível ler o arquivo selecionado.",
+      "notAFile": "O caminho selecionado não é um arquivo",
+      "fileTooLarge": "O arquivo é muito grande ({{size}} MB). O máximo é {{max}} MB.",
+      "saveFailed": "Não foi possível salvar o bichinho.",
+      "pathUnreadable": "Não foi possível ler o caminho selecionado.",
+      "manifestMissing": "O pacote não contém pet.json.",
+      "manifestInvalid": "pet.json é inválido.",
+      "manifestSymlink": "pet.json não pode ser um link simbólico.",
+      "manifestParseFailed": "pet.json inválido: {{detail}}",
+      "bundleSaveFailed": "Não foi possível salvar o pacote do bichinho.",
+      "sheetPathNotRelative": "spritesheetPath deve ser relativo ao pacote.",
+      "sheetPathIsRoot": "spritesheetPath deve apontar para um arquivo, não para a raiz do pacote.",
+      "sheetPathEscapes": "spritesheetPath aponta para fora do pacote.",
+      "sheetSymlink": "A folha de sprites não pode ser um link simbólico.",
+      "sheetUnsupportedType": "A folha de sprites deve ser um arquivo PNG, APNG, JPG, GIF ou WebP.",
+      "sheetNotFound": "Arquivo da folha de sprites não encontrado.",
+      "sheetNotAFile": "O caminho da folha de sprites não é um arquivo.",
+      "sheetTooLarge": "A folha de sprites é muito grande ({{size}} MB).",
+      "sheetSizeLimitExceeded": "A folha de sprites excedeu o limite de tamanho.",
+      "sheetUndecodable": "Não foi possível decodificar a imagem da folha de sprites.",
+      "sheetFrameMismatch": "A folha de sprites {{sheetWidth}}×{{sheetHeight}} não é um múltiplo exato do quadro {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "A animação \"{{name}}\" faz referência à linha {{row}}, mas a folha tem apenas {{rows}}.",
+      "animationTooManyFrames": "O número de quadros da animação \"{{name}}\" ({{frames}}) excede o número de colunas da folha ({{columns}}).",
+      "animationDurationMismatch": "Na animação \"{{name}}\", o número de durações de quadro declaradas ({{durations}}) não corresponde ao número de quadros ({{frames}}).",
+      "defaultAnimationMissing": "defaultAnimation \"{{name}}\" não está em animations."
+    },
+    "defaultLabels": {
+      "image": "Bichinho personalizado",
+      "bundle": "Pacote do bichinho"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/ru.json b/src/renderer/src/i18n/locales/ru.json
index c4d930b3c44..294500cde20 100644
--- a/src/renderer/src/i18n/locales/ru.json
+++ b/src/renderer/src/i18n/locales/ru.json
@@ -868,6 +868,12 @@
         "discardFailed": "Не удалось удалить файл для проверки",
         "deleteFailed": "Не удалось удалить отправленную диагностику"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Значки репозитория должны быть файлами PNG.",
+        "tooLarge": "Размер изображения значка репозитория не должен превышать 256 КБ."
+      }
     }
   },
   "menu": {
@@ -23007,5 +23013,39 @@
     "repairing": "Orca исправляет права доступа.",
     "repairFailed": "Orca не удалось их исправить. Обычно это означает, что для изменения прав доступа к папке нужны права администратора.",
     "runCommands": "Выполните эти команды в командной строке от имени администратора, затем снова запустите Orca:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Неподдерживаемый файл. Выберите PNG, APNG, JPG, GIF, WebP или SVG.",
+      "fileUnreadable": "Не удалось прочитать выбранный файл.",
+      "notAFile": "Выбранный путь не указывает на файл",
+      "fileTooLarge": "Файл слишком большой ({{size}} МБ). Максимум — {{max}} МБ.",
+      "saveFailed": "Не удалось сохранить питомца.",
+      "pathUnreadable": "Не удалось прочитать выбранный путь.",
+      "manifestMissing": "В пакете отсутствует pet.json.",
+      "manifestInvalid": "Файл pet.json некорректен.",
+      "manifestSymlink": "pet.json не должен быть символической ссылкой.",
+      "manifestParseFailed": "Некорректный pet.json: {{detail}}",
+      "bundleSaveFailed": "Не удалось сохранить пакет питомца.",
+      "sheetPathNotRelative": "spritesheetPath должен быть путём относительно пакета.",
+      "sheetPathIsRoot": "spritesheetPath должен указывать на файл, а не на корневую папку пакета.",
+      "sheetPathEscapes": "spritesheetPath выходит за пределы пакета.",
+      "sheetSymlink": "Спрайт-лист не должен быть символической ссылкой.",
+      "sheetUnsupportedType": "Спрайт-лист должен быть файлом PNG, APNG, JPG, GIF или WebP.",
+      "sheetNotFound": "Файл спрайт-листа не найден.",
+      "sheetNotAFile": "Путь к спрайт-листу не указывает на файл.",
+      "sheetTooLarge": "Спрайт-лист слишком большой ({{size}} МБ).",
+      "sheetSizeLimitExceeded": "Размер спрайт-листа превышает допустимый предел.",
+      "sheetUndecodable": "Не удалось декодировать изображение спрайт-листа.",
+      "sheetFrameMismatch": "Размер спрайт-листа {{sheetWidth}}×{{sheetHeight}} не кратен размеру кадра {{frameWidth}}×{{frameHeight}}.",
+      "animationRowOutOfRange": "Анимация «{{name}}» ссылается на строку {{row}}, но число строк в спрайт-листе — {{rows}}.",
+      "animationTooManyFrames": "В анимации «{{name}}» кадров: {{frames}}, но в спрайт-листе столбцов всего {{columns}}.",
+      "animationDurationMismatch": "В анимации «{{name}}» число длительностей кадров — {{durations}}, а число кадров — {{frames}}.",
+      "defaultAnimationMissing": "defaultAnimation «{{name}}» отсутствует в animations."
+    },
+    "defaultLabels": {
+      "image": "Пользовательский питомец",
+      "bundle": "Пакет питомца"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/tr.json b/src/renderer/src/i18n/locales/tr.json
index a0ca456c2a6..191f685c005 100644
--- a/src/renderer/src/i18n/locales/tr.json
+++ b/src/renderer/src/i18n/locales/tr.json
@@ -852,6 +852,12 @@
         "discardFailed": "İnceleme dosyası atılamadı",
         "deleteFailed": "Gönderilen tanılama bilgileri silinemedi"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "Repo simgeleri PNG dosyaları olmalıdır.",
+        "tooLarge": "Repo simgesi görseli 256 KB veya daha küçük olmalıdır."
+      }
     }
   },
   "menu": {
@@ -22307,5 +22313,39 @@
     "repairing": "Orca şu anda izinleri onarıyor.",
     "repairFailed": "İzinler Orca tarafından onarılamadı. Bu genellikle klasör için yönetici yetkisi gerektiği anlamına gelir.",
     "runCommands": "Yönetici olarak açılan Komut İstemi penceresinde bu komutları çalıştırın, ardından Orca'yı yeniden başlatın:"
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "Desteklenmeyen dosya. PNG, APNG, JPG, GIF, WebP veya SVG seçin.",
+      "fileUnreadable": "Seçilen dosya okunamadı.",
+      "notAFile": "Seçilen yol bir dosya değil",
+      "fileTooLarge": "Dosya çok büyük ({{size}} MB). En fazla {{max}} MB olabilir.",
+      "saveFailed": "Evcil hayvan kaydedilemedi.",
+      "pathUnreadable": "Seçilen yol okunamadı.",
+      "manifestMissing": "Pakette pet.json eksik.",
+      "manifestInvalid": "pet.json geçersiz.",
+      "manifestSymlink": "pet.json sembolik bağlantı olmamalıdır.",
+      "manifestParseFailed": "Geçersiz pet.json: {{detail}}",
+      "bundleSaveFailed": "Evcil hayvan paketi kaydedilemedi.",
+      "sheetPathNotRelative": "spritesheetPath, pakete göre göreli bir yol olmalıdır.",
+      "sheetPathIsRoot": "spritesheetPath, paket kökü yerine bir dosyayı göstermelidir.",
+      "sheetPathEscapes": "spritesheetPath paket dışına çıkıyor.",
+      "sheetSymlink": "Sprite sayfası sembolik bağlantı olmamalıdır.",
+      "sheetUnsupportedType": "Sprite sayfası PNG, APNG, JPG, GIF veya WebP olmalıdır.",
+      "sheetNotFound": "Sprite sayfası dosyası bulunamadı.",
+      "sheetNotAFile": "Sprite sayfasının yolu bir dosya değil.",
+      "sheetTooLarge": "Sprite sayfası çok büyük ({{size}} MB).",
+      "sheetSizeLimitExceeded": "Sprite sayfası boyut sınırını aştı.",
+      "sheetUndecodable": "Sprite sayfası görüntüsünün kodu çözülemedi.",
+      "sheetFrameMismatch": "Sprite sayfası boyutu {{sheetWidth}}×{{sheetHeight}}, kare boyutu {{frameWidth}}×{{frameHeight}} değerinin tam katı değil.",
+      "animationRowOutOfRange": "\"{{name}}\" animasyonu {{row}}. satıra başvuruyor, ancak sayfada {{rows}} satır var.",
+      "animationTooManyFrames": "\"{{name}}\" animasyonunda {{frames}} kare var, ancak sayfada yalnızca {{columns}} sütun var.",
+      "animationDurationMismatch": "\"{{name}}\" animasyonu {{durations}} kare süresi tanımlıyor, ancak {{frames}} kare içeriyor.",
+      "defaultAnimationMissing": "defaultAnimation \"{{name}}\", animations içinde yok."
+    },
+    "defaultLabels": {
+      "image": "Özel evcil hayvan",
+      "bundle": "Evcil hayvan paketi"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/zh-Hant.json b/src/renderer/src/i18n/locales/zh-Hant.json
index 9d054617cd1..766cfd4adc1 100644
--- a/src/renderer/src/i18n/locales/zh-Hant.json
+++ b/src/renderer/src/i18n/locales/zh-Hant.json
@@ -848,6 +848,12 @@
         "discardFailed": "無法丟棄檢視檔案",
         "deleteFailed": "無法刪除已傳送的診斷資訊"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "存放庫圖示必須是 PNG 檔案。",
+        "tooLarge": "存放庫圖示圖片不得超過 256 KB。"
+      }
     }
   },
   "menu": {
@@ -22026,5 +22032,39 @@
     "repairing": "Orca 正在修復權限。",
     "repairFailed": "Orca 無法修復權限，這通常表示該資料夾需要系統管理員權限。",
     "runCommands": "在以系統管理員身分開啟的命令提示字元中執行以下指令，然後重新啟動 Orca："
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "不支援此檔案。請選擇 PNG、APNG、JPG、GIF、WebP 或 SVG。",
+      "fileUnreadable": "無法讀取所選檔案。",
+      "notAFile": "所選路徑不是檔案",
+      "fileTooLarge": "檔案過大（{{size}} MB）。上限為 {{max}} MB。",
+      "saveFailed": "無法儲存寵物。",
+      "pathUnreadable": "無法讀取所選路徑。",
+      "manifestMissing": "套件缺少 pet.json。",
+      "manifestInvalid": "pet.json 無效。",
+      "manifestSymlink": "pet.json 不得為符號連結。",
+      "manifestParseFailed": "無效的 pet.json：{{detail}}",
+      "bundleSaveFailed": "無法儲存寵物套件。",
+      "sheetPathNotRelative": "spritesheetPath 必須是相對於套件的路徑。",
+      "sheetPathIsRoot": "spritesheetPath 必須指向檔案，而非套件的根目錄。",
+      "sheetPathEscapes": "spritesheetPath 指向套件以外的路徑。",
+      "sheetSymlink": "精靈圖集不得為符號連結。",
+      "sheetUnsupportedType": "精靈圖集必須是 PNG、APNG、JPG、GIF 或 WebP 檔案。",
+      "sheetNotFound": "找不到精靈圖集檔案。",
+      "sheetNotAFile": "精靈圖集路徑不是檔案。",
+      "sheetTooLarge": "精靈圖集過大（{{size}} MB）。",
+      "sheetSizeLimitExceeded": "精靈圖集超過大小限制。",
+      "sheetUndecodable": "無法解碼精靈圖集影像。",
+      "sheetFrameMismatch": "精靈圖集尺寸 {{sheetWidth}}×{{sheetHeight}} 不是影格尺寸 {{frameWidth}}×{{frameHeight}} 的整數倍。",
+      "animationRowOutOfRange": "動畫「{{name}}」參照第 {{row}} 列，但精靈圖集只有 {{rows}} 列。",
+      "animationTooManyFrames": "動畫「{{name}}」有 {{frames}} 個影格，但精靈圖集只有 {{columns}} 欄。",
+      "animationDurationMismatch": "動畫「{{name}}」宣告了 {{durations}} 個影格持續時間，但有 {{frames}} 個影格。",
+      "defaultAnimationMissing": "defaultAnimation 「{{name}}」不在 animations 中。"
+    },
+    "defaultLabels": {
+      "image": "自訂寵物",
+      "bundle": "寵物套件"
+    }
   }
 }
diff --git a/src/renderer/src/i18n/locales/zh.json b/src/renderer/src/i18n/locales/zh.json
index f3023ccd93e..ce4b14d081f 100644
--- a/src/renderer/src/i18n/locales/zh.json
+++ b/src/renderer/src/i18n/locales/zh.json
@@ -474,6 +474,12 @@
         "discardFailed": "无法丢弃查看文件",
         "deleteFailed": "无法删除已发送的诊断信息"
       }
+    },
+    "repository": {
+      "iconPickErrors": {
+        "notPng": "仓库图标必须是 PNG 文件。",
+        "tooLarge": "仓库图标图片不得超过 256 KB。"
+      }
     }
   },
   "menu": {
@@ -22323,5 +22329,39 @@
     "repairing": "Orca 正在修复权限。",
     "repairFailed": "Orca 无法修复权限，这通常意味着该文件夹需要管理员权限。",
     "runCommands": "在以管理员身份运行的命令提示符中执行以下命令，然后重新启动 Orca："
+  },
+  "pet": {
+    "importErrors": {
+      "unsupportedFile": "不支持此文件。请选择 PNG、APNG、JPG、GIF、WebP 或 SVG。",
+      "fileUnreadable": "无法读取所选文件。",
+      "notAFile": "所选路径不是文件",
+      "fileTooLarge": "文件过大（{{size}} MB）。最大允许 {{max}} MB。",
+      "saveFailed": "无法保存宠物。",
+      "pathUnreadable": "无法读取所选路径。",
+      "manifestMissing": "包中缺少 pet.json。",
+      "manifestInvalid": "pet.json 无效。",
+      "manifestSymlink": "pet.json 不能是符号链接。",
+      "manifestParseFailed": "无效的 pet.json：{{detail}}",
+      "bundleSaveFailed": "无法保存宠物包。",
+      "sheetPathNotRelative": "spritesheetPath 必须是相对于包的路径。",
+      "sheetPathIsRoot": "spritesheetPath 必须指向文件，而不是包的根目录。",
+      "sheetPathEscapes": "spritesheetPath 指向包之外的路径。",
+      "sheetSymlink": "精灵图不能是符号链接。",
+      "sheetUnsupportedType": "精灵图必须是 PNG、APNG、JPG、GIF 或 WebP 文件。",
+      "sheetNotFound": "找不到精灵图文件。",
+      "sheetNotAFile": "精灵图路径不是文件。",
+      "sheetTooLarge": "精灵图过大（{{size}} MB）。",
+      "sheetSizeLimitExceeded": "精灵图超出了大小限制。",
+      "sheetUndecodable": "无法解码精灵图图像。",
+      "sheetFrameMismatch": "精灵图尺寸 {{sheetWidth}}×{{sheetHeight}} 不是帧尺寸 {{frameWidth}}×{{frameHeight}} 的整数倍。",
+      "animationRowOutOfRange": "动画“{{name}}”引用了第 {{row}} 行，但精灵图只有 {{rows}} 行。",
+      "animationTooManyFrames": "动画“{{name}}”有 {{frames}} 帧，但精灵图只有 {{columns}} 列。",
+      "animationDurationMismatch": "动画“{{name}}”声明了 {{durations}} 个帧时长，但有 {{frames}} 帧。",
+      "defaultAnimationMissing": "defaultAnimation “{{name}}” 不在 animations 中。"
+    },
+    "defaultLabels": {
+      "image": "自定义宠物",
+      "bundle": "宠物包"
+    }
   }
 }
diff --git a/src/shared/pet-import-failure-copy.ts b/src/shared/pet-import-failure-copy.ts
new file mode 100644
index 00000000000..36cc70f8b37
--- /dev/null
+++ b/src/shared/pet-import-failure-copy.ts
@@ -0,0 +1,81 @@
+// One English table for pet import refusals: main builds the wire `error`, the renderer translates by code.
+export const PET_IMPORT_FAILURE_COPY = {
+  unsupportedFile: 'Unsupported file. Pick a PNG, APNG, JPG, GIF, WebP, or SVG.',
+  fileUnreadable: 'Could not read the selected file.',
+  notAFile: 'Selected path is not a file',
+  fileTooLarge: 'File is too large ({{size}} MB). Max is {{max}} MB.',
+  saveFailed: 'Could not save the pet.',
+  pathUnreadable: 'Could not read the selected path.',
+  manifestMissing: 'Bundle is missing pet.json.',
+  manifestInvalid: 'pet.json is invalid.',
+  manifestSymlink: 'pet.json must not be a symlink.',
+  manifestParseFailed: 'Invalid pet.json: {{detail}}',
+  bundleSaveFailed: 'Could not save the pet bundle.',
+  sheetPathNotRelative: 'spritesheetPath must be relative to the bundle.',
+  sheetPathIsRoot: 'spritesheetPath must point to a file, not the bundle root.',
+  sheetPathEscapes: 'spritesheetPath escapes the bundle.',
+  sheetSymlink: 'spritesheet must not be a symlink.',
+  sheetUnsupportedType: 'Spritesheet must be a PNG, APNG, JPG, GIF, or WebP.',
+  sheetNotFound: 'Spritesheet file not found.',
+  sheetNotAFile: 'Spritesheet path is not a file.',
+  sheetTooLarge: 'Spritesheet is too large ({{size}} MB).',
+  sheetSizeLimitExceeded: 'Spritesheet exceeded the size limit.',
+  sheetUndecodable: 'Could not decode the spritesheet image.',
+  sheetFrameMismatch:
+    'Spritesheet {{sheetWidth}}×{{sheetHeight}} is not a clean multiple of frame {{frameWidth}}×{{frameHeight}}.',
+  animationRowOutOfRange: 'Animation "{{name}}" references row {{row}} but sheet has {{rows}}.',
+  animationTooManyFrames:
+    'Animation "{{name}}" has {{frames}} frames but sheet only has {{columns}} columns.',
+  animationDurationMismatch:
+    'Animation "{{name}}" declares {{durations}} frame durations but {{frames}} frames.',
+  defaultAnimationMissing: 'defaultAnimation "{{name}}" not in animations.'
+} as const
+
+export type PetImportFailureCode = keyof typeof PET_IMPORT_FAILURE_COPY
+
+export type PetImportFailureParams = Record<string, string | number>
+
+/** Wire shape: `error` stays English; `errorDetail` is verbatim diagnostic text. */
+export type PetImportFailure = {
+  ok: false
+  error: string
+  errorCode?: string
+  errorParams?: PetImportFailureParams
+  errorDetail?: string
+}
+
+/** Stored as the label when a pet has no usable name; the renderer shows it translated. */
+export const CUSTOM_PET_DEFAULT_LABEL = 'Custom pet'
+export const PET_BUNDLE_DEFAULT_LABEL = 'Pet bundle'
+
+/** Thrown inside main's import steps; the IPC handler returns it as a PetImportFailure. */
+export class PetImportError extends Error {
+  readonly failure: PetImportFailure
+
+  constructor(code: PetImportFailureCode, params: PetImportFailureParams = {}, detail?: string) {
+    const values = detail === undefined ? params : { ...params, detail }
+    // One pass, so a value containing "{{detail}}" stays verbatim.
+    const error = PET_IMPORT_FAILURE_COPY[code].replace(/\{\{(\w+)\}\}/g, (slot, name: string) =>
+      Object.hasOwn(values, name) ? String(values[name]) : slot
+    )
+    super(error)
+    this.failure = {
+      ok: false,
+      error,
+      errorCode: code,
+      ...(Object.keys(params).length > 0 ? { errorParams: params } : {}),
+      ...(detail !== undefined ? { errorDetail: detail } : {})
+    }
+  }
+}
+
+export function isPetImportFailure(value: unknown): value is PetImportFailure {
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    'ok' in value &&
+    value.ok === false &&
+    'error' in value &&
+    typeof value.error === 'string'
+  )
+}
diff --git a/src/shared/repo-icon-pick-failure-copy.ts b/src/shared/repo-icon-pick-failure-copy.ts
new file mode 100644
index 00000000000..dab4da2e9ac
--- /dev/null
+++ b/src/shared/repo-icon-pick-failure-copy.ts
@@ -0,0 +1,16 @@
+// One English table for repo icon upload refusals: main builds the wire `error`, the renderer translates by code.
+export const REPO_ICON_PICK_FAILURE_COPY = {
+  notPng: 'Repo icons must be PNG files.',
+  tooLarge: 'Repo icon image must be 256KB or smaller.'
+} as const
+
+export type RepoIconPickFailureCode = keyof typeof REPO_ICON_PICK_FAILURE_COPY
+
+/** Wire shape: `error` stays English; the renderer translates known codes. */
+export type RepoIconPickFailure = { ok: false; error: string; errorCode?: string }
+
+export type RepoIconPickResult = { dataUrl: string; fileName: string } | RepoIconPickFailure | null
+
+export function repoIconPickFailure(errorCode: RepoIconPickFailureCode): RepoIconPickFailure {
+  return { ok: false, error: REPO_ICON_PICK_FAILURE_COPY[errorCode], errorCode }
+}