feat: ReactBits micro components integration

Installed 6 ReactBits micro components (src/components/):
- SwipeRow: swipe-to-action cards (lead approve/reject/snooze)
- CometDial: circular dial selector (future: dashboard KPI selector)
- CodeSlots: code input slots (future: API token confirmation)
- FuseButton: fuse-animated CTA with undo window
- SlideCommit: slide-to-confirm (timesheet week lock)
- HoldButton: hold-to-confirm (contract sign, dangerous actions)

Integrated into views:
- Timesheet: SlideCommit replaces 'Woche sperren' button
- Contracts: HoldButton replaces 'E-Signatur anfordern' (hold 1.5s to sign)
- Recurring: FuseButton replaces 'Jetzt ausführen' (with undo window)
- Leads: SwipeableLeadCard created (swipe to approve/reject/snooze)

Created wrapper components:
- swipeable-lead-card.tsx: SwipeRow wrapper for lead cards
- hold-to-confirm.tsx: HoldButton wrapper with loading state
- fuse-cta.tsx: FuseButton wrapper with toast feedback
- slide-to-lock.tsx: SlideCommit wrapper for GoBD week lock

0 TS errors, ESLint clean, no console errors.

src/components/aos/fuse-cta.tsx

@@ -0,0 +1,61 @@
+'use client'
+
+import FuseButton from '@/components/FuseButton'
+import { useState } from 'react'
+import { toast } from 'sonner'
+import { Loader2 } from 'lucide-react'
+
+// FuseButton wrapper for primary CTA actions with undo window.
+// Used for: create deal, finalize invoice, run recurring, approve estimate.
+export function FuseCTA({
+  label,
+  doneLabel = 'Erledigt',
+  undoLabel = 'Rückgängig',
+  onCommit,
+  onUndo,
+  disabled,
+  size = 'md',
+}: {
+  label: string
+  doneLabel?: string
+  undoLabel?: string
+  onCommit: () => void | Promise<void>
+  onUndo?: () => void
+  disabled?: boolean
+  size?: 'sm' | 'md' | 'lg'
+}) {
+  const [busy, setBusy] = useState(false)
+
+  const handleCommit = async () => {
+    setBusy(true)
+    const t = toast.loading('Wird ausgeführt…')
+    try {
+      await onCommit()
+      toast.success(doneLabel, { id: t })
+    } catch {
+      toast.error('Fehlgeschlagen', { id: t })
+    } finally {
+      setBusy(false)
+    }
+  }
+
+  return (
+    <FuseButton
+      label={busy ? 'Lädt…' : label}
+      doneLabel={doneLabel}
+      undoLabel={undoLabel}
+      onCommit={handleCommit}
+      onUndo={onUndo}
+      disabled={disabled || busy}
+      size={size}
+      commitOn="fuseEnd"
+      settle="stay"
+      fuse="bottom"
+      fuseThickness={2}
+      undoWindow={4000}
+      color="oklch(0.98 0 0)"
+      background="oklch(0.2 0 0)"
+      fuseColor="oklch(0.5 0 0)"
+    />
+  )
+}