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.

eslint.config.mjs

@@ -43,6 +43,7 @@ const eslintConfig = [...nextCoreWebVitals, ...nextTypescript, {
 
     // React rules
     "react-hooks/exhaustive-deps": "off",
+    "react-hooks/refs": "off",
     "react-hooks/purity": "off",
     "react/no-unescaped-entities": "off",
     "react/display-name": "off",