fix(desktop): suppress generic provider warning in onboarding

Hide the red setup notice when the message is the generic missing-provider guidance, since onboarding already presents provider auth actions. Centralize provider-setup matching across desktop hooks and add coverage for the matcher.

apps/desktop/src/app/session/hooks/use-message-stream.ts

@@ -15,6 +15,7 @@ import {
 } from '@/lib/chat-messages'
 import { coerceGatewayText, coerceThinkingText, normalizePersonalityValue } from '@/lib/chat-runtime'
 import { triggerHaptic } from '@/lib/haptics'
+import { isProviderSetupErrorMessage } from '@/lib/provider-setup-errors'
 import { setClarifyRequest } from '@/store/clarify'
 import { notify } from '@/store/notifications'
 import { requestDesktopOnboarding } from '@/store/onboarding'
@@ -35,9 +36,6 @@ import type { RpcEvent } from '@/types/hermes'
 
 import type { ClientSessionState } from '../../types'
 
-const PROVIDER_SETUP_ERROR_RE =
-  /No inference provider configured|no_provider_configured|OPENROUTER_API_KEY|OPENAI_API_KEY|ANTHROPIC_API_KEY|set an API key/i
-
 interface MessageStreamOptions {
   activeSessionIdRef: MutableRefObject<string | null>
   hydrateFromStoredSession: (
@@ -598,7 +596,7 @@ export function useMessageStream({
         }
       } else if (event.type === 'error') {
         const errorMessage = payload?.message || 'Hermes reported an error'
-        const looksLikeProviderSetup = PROVIDER_SETUP_ERROR_RE.test(errorMessage)
+        const looksLikeProviderSetup = isProviderSetupErrorMessage(errorMessage)
 
         if (looksLikeProviderSetup) {
           requestDesktopOnboarding(errorMessage)

apps/desktop/src/app/session/hooks/use-prompt-actions.ts

@@ -18,6 +18,7 @@ import {
   isDesktopSlashCommand
 } from '@/lib/desktop-slash-commands'
 import { triggerHaptic } from '@/lib/haptics'
+import { isProviderSetupErrorMessage } from '@/lib/provider-setup-errors'
 import {
   $composerAttachments,
   addComposerAttachment,
@@ -49,9 +50,7 @@ function blobToDataUrl(blob: Blob): Promise<string> {
 function isProviderSetupError(error: unknown) {
   const message = error instanceof Error ? error.message : String(error)
 
-  return /No inference provider configured|OPENROUTER_API_KEY|OPENAI_API_KEY|ANTHROPIC_API_KEY|set an API key/i.test(
-    message
-  )
+  return isProviderSetupErrorMessage(message)
 }
 
 interface PromptActionsOptions {