Unnest bubble filters

app/javascript/controllers/query_merger_controller.js

@@ -0,0 +1,9 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  merge({ params: { key, value } }) {
+    const url = new URL(window.location.href)
+    url.searchParams.set(key, value)
+    Turbo.visit(url)
+  }
+}