L1 Stammdaten: Lane-Bericht und mobile Suchfelder

Bericht docs/craftvia/lanes/stammdaten.md (Umfang, Dateien, Tests, Smoke,
offene Punkte) sowie umbrechende Suchfelder der Kunden- und Objektliste bei
schmalen Viewports.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/app/(app)/customers/page.tsx

@@ -50,7 +50,7 @@ export default async function CustomersPage({ searchParams }: { searchParams: Se
       />
 
       <form method="get" action="/customers" className="mb-4 flex flex-wrap items-end gap-2" role="search">
-        <label className="flex min-w-[14rem] flex-1 flex-col gap-1 text-[12.5px] font-semibold">
+        <label className="flex w-full min-w-0 flex-col gap-1 text-[12.5px] font-semibold sm:w-auto sm:min-w-[14rem] sm:flex-1">
           {t("searchLabel")}
           <input name="q" type="search" defaultValue={q ?? ""} placeholder={t("searchPlaceholder")} className={controlClass} />
         </label>

src/app/(app)/sites/page.tsx

@@ -67,7 +67,7 @@ export default async function SitesPage({ searchParams }: { searchParams: Search
 
       <form method="get" action="/sites" className="mb-4 flex flex-wrap items-end gap-2" role="search">
         {filterCustomer && <input type="hidden" name="customerId" value={filterCustomer} />}
-        <label className="flex min-w-[14rem] flex-1 flex-col gap-1 text-[12.5px] font-semibold">
+        <label className="flex w-full min-w-0 flex-col gap-1 text-[12.5px] font-semibold sm:w-auto sm:min-w-[14rem] sm:flex-1">
           {t("searchLabel")}
           <input name="q" type="search" defaultValue={q ?? ""} placeholder={t("searchPlaceholder")} className={controlClass} />
         </label>