fix: remove timeouts from error toasts so they persist until dismissed (#9543)

## Summary

Remove `life` (timeout) property from all error-severity toast calls so
they persist until manually dismissed, preventing users from missing
important error messages.

## Changes

- **What**: Removed `life` property from 86 error toast calls across 46
files. Error toasts now use PrimeVue's default behavior (no
auto-dismiss). Non-error toasts (success, warn, info) are unchanged.
- Also fixed a pre-existing lint issue in `TaskListPanel.vue` (`import {
t } from '@/i18n'` → `useI18n()`)

## Review Focus

- One conditional toast in `useMediaAssetActions.ts` intentionally keeps
`life` because its severity alternates between `warn` and `error`

Fixes
https://www.notion.so/comfy-org/Implement-Remove-timeouts-for-all-error-toasts-31b6d73d365081cead54fddc77ae7c3d

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9543-fix-remove-timeouts-from-error-toasts-so-they-persist-until-dismissed-31c6d73d365081fa8d30f6366e9bfe38)
by [Unito](https://www.unito.io)

src/components/dialog/content/ErrorDialogContent.vue

@@ -138,8 +138,7 @@ onMounted(async () => {
     toast.add({
       severity: 'error',
       summary: t('g.error'),
-      detail: t('toastMessages.failedToFetchLogs'),
-      life: 5000
+      detail: t('toastMessages.failedToFetchLogs')
     })
   }
 })

src/components/dialog/content/TopUpCreditsDialogContentLegacy.vue

@@ -275,8 +275,7 @@ async function handleBuy() {
     toast.add({
       severity: 'error',
       summary: t('credits.topUp.purchaseError'),
-      detail: t('credits.topUp.purchaseErrorDetail', { error: errorMessage }),
-      life: 5000
+      detail: t('credits.topUp.purchaseErrorDetail', { error: errorMessage })
     })
   } finally {
     loading.value = false

src/components/dialog/content/subscription/CancelSubscriptionDialogContent.vue

@@ -98,8 +98,7 @@ async function onConfirmCancel() {
     toast.add({
       severity: 'error',
       summary: t('subscription.cancelDialog.failed'),
-      detail: error instanceof Error ? error.message : t('g.unknownError'),
-      life: 5000
+      detail: error instanceof Error ? error.message : t('g.unknownError')
     })
   } finally {
     isLoading.value = false

src/components/helpcenter/HelpCenterMenuContent.vue

@@ -579,8 +579,7 @@ const onUpdateComfyUI = async (): Promise<void> => {
       toast.add({
         severity: 'error',
         summary: t('g.error'),
-        detail: error.value || t('helpCenter.updateComfyUIFailed'),
-        life: 5000
+        detail: error.value || t('helpCenter.updateComfyUIFailed')
       })
       return
     }
@@ -597,8 +596,7 @@ const onUpdateComfyUI = async (): Promise<void> => {
     toast.add({
       severity: 'error',
       summary: t('g.error'),
-      detail: err instanceof Error ? err.message : t('g.unknownError'),
-      life: 5000
+      detail: err instanceof Error ? err.message : t('g.unknownError')
     })
   }
 }

src/components/sidebar/tabs/AssetsSidebarTab.vue

@@ -615,8 +615,7 @@ const enterFolderView = async (asset: AssetItem) => {
     toast.add({
       severity: 'error',
       summary: t('sideToolbar.folderView.errorSummary'),
-      detail: t('sideToolbar.folderView.errorDetail'),
-      life: 5000
+      detail: t('sideToolbar.folderView.errorDetail')
     })
     exitFolderView()
   }
@@ -662,8 +661,7 @@ const copyJobId = async () => {
       toast.add({
         severity: 'error',
         summary: t('mediaAsset.jobIdToast.error'),
-        detail: t('mediaAsset.jobIdToast.jobIdCopyFailed'),
-        life: 3000
+        detail: t('mediaAsset.jobIdToast.jobIdCopyFailed')
       })
     }
   }