feat(dashboard): add onboarding gate forcing company setup before app use

After login/activation, show a full-screen loader while company settings
resolve, then force the user onto /settings/company and block navigation to
any other route until the company info is filled in. The gate releases once the
company record has a name; fails open on API error so a transient failure can
never lock the user out.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/dashboard/modules/settings/company/settings-form.tsx

@@ -4,7 +4,7 @@ import { AlertTriangle, Save } from "lucide-react"
 import { useEffect } from "react"
 import { useForm } from "react-hook-form"
 import { zodResolver } from "@hookform/resolvers/zod"
-import { useQuery } from "@tanstack/react-query"
+import { useQuery, useQueryClient } from "@tanstack/react-query"
 import { toast } from "sonner"
 
 import { Button } from "@/shared/components/ui/button"
@@ -122,6 +122,7 @@ function mapFormToPayload(values: SettingsFormValues) {
 
 export function SettingsForm() {
     const api = useAuthApi()
+    const queryClient = useQueryClient()
 
     const form = useForm<SettingsFormValues>({
         resolver: zodResolver(settingsFormSchema) as any,
@@ -154,6 +155,9 @@ export function SettingsForm() {
         mutationFn: (values: SettingsFormValues) => api.settings.update(mapFormToPayload(values)),
         onSuccess: () => {
             toast.success("Settings saved successfully")
+            // Refresh the settings query so the onboarding gate releases once
+            // the company info has been filled in.
+            queryClient.invalidateQueries({ queryKey: [SETTINGS_ROUTES.INDEX] })
         },
         onError: () => {
             toast.error("Failed to save settings")