- Add ToastProvider (global MUI Snackbar stack) + toastStore (Zustand)
- Add ConfirmDialog reusable component for destructive actions
- Wire toast feedback to all async mutations: review status, AI output status,
match approval, shortlist add/remove/title/finalize, signal review actions
- Fix dead UserMenu buttons (Profil, Einstellungen) — show info toast
- Migrate local Snackbar instances in AddToShortlistDialog and
FutureSignalDetailPanel to global toast store
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2-panel workspace at /supply/future-availability: filterable signal list with FutureSignalCard (type/sensitivity/review badges + mandatory disclaimer) and collapsible detail panel with full evidence, review workflow (IN_REVIEW→APPROVED/REJECTED), shortlist action, and review task creation.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>