feat(shift): current shift in the list + modal actions; full-width layout everywhere

Shift screen:
- The standalone ShiftControl block is gone from /shift. The open/CURRENT shift now
  appears at the TOP of the shift list (CURRENT badge, live figures synthesized from
  the X-report), unified with history. Selecting it shows its live activity log.
- Shift ACTIONS moved into the current shift's detail pane, each opening a MODAL:
  End shift (confirm → signed Z-report result), drawer voucher (Mandat in/out),
  takings-so-far (X-report). When no shift is open, a Start-shift button shows.
- The current shift's log auto-refreshes (5s); a closed shift is bounded by its
  window. /setup/shifts stays read-only history (no manage props). Deleted the now-
  orphaned ShiftControl.tsx.

Layout:
- Every screen is now full-width like /booth — stripped the per-screen
  `mx-auto max-w-*` caps (Logs, Subscriptions, Plans, Tariff, Users, Roles, Setup
  layout, Shifts). The shell <main> already provides padding.

Build+lint 12/12 (i18n parity). Verified a live open shift surfaces as the CURRENT
list entry.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

apps/web/src/SubscriptionManager.tsx

@@ -353,7 +353,7 @@ export function SubscriptionManager() {
   if (!subs) return null;
 
   return (
-    <section className="mx-auto max-w-3xl px-4 py-6">
+    <section className="px-4 py-6">
       <h2 className="mb-3 text-h4 font-semibold text-term-text">{t("subs.title")}</h2>
       <ul className="mb-3 list-none p-0">
         {subs.map((s) => (