A shop can be renamed and, while empty, removed - from head office

The display name was always meant to be editable and the slug frozen;
until now neither had a way in. PATCH /api/sites/{site} takes a name
and a timezone (manager and above), DELETE removes an empty shop
(owner). The shop drawer in head office gets both, with the short name
shown read-only and the reason beside it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KGcjxF1cNLcuwc3DAPcnfj

web/src/views/Sites.jsx

@@ -70,7 +70,7 @@ export default function Sites({ user }) {
       {/* Reachable per shop, at last. The smoke test used to hang off a single
           button on the camera screen that always checked sites[0], so with two
           shops the second could not be checked at all. */}
-      {checking && <SiteCheck site={checking} onClose={() => setChecking(null)} />}
+      {checking && <SiteCheck site={checking} user={user} onClose={() => setChecking(null)} onChanged={reload} />}
       {opening && <NewShop onClose={() => setOpening(false)}
                            onCreated={() => { setOpening(false); reload() }} />}
     </>