Fix billing card not showing on launch

- Listen for oauth:didConnect event to fetch billing immediately on connect
- Make trialDaysRemaining optional in IPC schema for backward compatibility
- Default trialDaysRemaining to null when not present in API response

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/x/apps/renderer/src/hooks/useBilling.ts

@@ -25,7 +25,10 @@ export function useBilling(isRowboatConnected: boolean) {
     try {
       setIsLoading(true)
       const result = await window.ipc.invoke('billing:getInfo', null)
-      setBilling(result)
+      setBilling({
+        ...result,
+        trialDaysRemaining: result.trialDaysRemaining ?? null,
+      })
     } catch (error) {
       console.error('Failed to fetch billing info:', error)
       setBilling(null)
@@ -34,6 +37,7 @@ export function useBilling(isRowboatConnected: boolean) {
     }
   }, [isRowboatConnected])
 
+  // Fetch on mount / when connection state changes, and poll every 5 minutes
   useEffect(() => {
     fetchBilling()
 
@@ -54,5 +58,15 @@ export function useBilling(isRowboatConnected: boolean) {
     }
   }, [fetchBilling, isRowboatConnected])
 
+  // Also refetch when OAuth connection completes (e.g. on app launch auto-reconnect)
+  useEffect(() => {
+    const cleanup = window.ipc.on('oauth:didConnect', (event) => {
+      if (event.provider === 'rowboat') {
+        fetchBilling()
+      }
+    })
+    return cleanup
+  }, [fetchBilling])
+
   return { billing, isLoading, refresh: fetchBilling }
 }

apps/x/packages/shared/src/ipc.ts

@@ -564,7 +564,7 @@ const ipcSchemas = {
       userId: z.string().nullable(),
       subscriptionPlan: z.string().nullable(),
       subscriptionStatus: z.string().nullable(),
-      trialDaysRemaining: z.number().nullable(),
+      trialDaysRemaining: z.number().nullable().optional(),
       sanctionedCredits: z.number(),
       availableCredits: z.number(),
     }),