refactor(ui): promote BudgetBar and InlineConfirmDelete to shared ui/

BudgetBar and ConfirmDelete were only sitting in organization/helpers.tsx
but have no organization-specific behaviour. Move them under
components/ui/ and keep the old exports as re-exports so existing
importers continue to resolve. HeartbeatSection stays in helpers.tsx
because it owns agent-specific heartbeat IPC.

src/renderer/components/ui/index.ts

@@ -1,5 +1,6 @@
 export { Badge, SectionButton, Panel, Field, Input, TextArea, Select, ActionButton, Spinner, Eyebrow, Card } from "./primitives";
-export { StatusPill, InlineNotice, ConfirmDialog, EmptyState } from "./feedback";
+export { StatusPill, InlineNotice, ConfirmDialog, InlineConfirmDelete, EmptyState } from "./feedback";
+export { BudgetBar } from "./BudgetBar";
 export { Modal, ListFrame, ListRow } from "./layout";
 export { useFocusTrap, useReducedMotion, ErrorBoundary } from "./hooks";
 export { AttentionRow } from "./AttentionRow";