refactor: convert to bun workspaces monorepo

- Move web app into apps/web/
- Create packages/shared/ with shared types
- Create plugins/decky-vault/ scaffold
- Root package.json manages workspaces only

apps/web/components/wizard/steps/settings-step.tsx

@@ -0,0 +1,27 @@
+"use client"
+
+import { SettingsEditor, type SettingCategory } from "@/components/wizard/settings-editor"
+import { SlidersHorizontal } from "lucide-react"
+
+interface SettingsStepProps {
+  value: SettingCategory[]
+  onChange: (value: SettingCategory[]) => void
+}
+
+export function SettingsStep({ value, onChange }: SettingsStepProps) {
+  return (
+    <div className="space-y-4">
+      <div className="flex items-start gap-3">
+        <SlidersHorizontal className="h-4 w-4 text-primary mt-0.5 flex-shrink-0" />
+        <div>
+          <h3 className="text-sm font-semibold text-text">Game Settings</h3>
+          <p className="text-xs text-text/60 mt-1">
+            Configure the in-game settings you used during testing. Add categories and settings as needed, or load defaults to get started.
+          </p>
+        </div>
+      </div>
+
+      <SettingsEditor value={value} onChange={onChange} />
+    </div>
+  )
+}