refactor: codebase opschoning — type safety, error handling, central config, page splits

- categorie A: alle catch(e: any) → catch(e: unknown) met instanceof check
- categorie B: stille .catch() logging toegevoegd (SWRegister, admin, upload, auth)
- categorie C: hardcoded 192.168.1.176 IPs vervangen door env var defaults
- categorie D: page files >250L gesplitst (history, settings, explorer, admin/payment,
  ipns, users, upload, dashboard) in helpers/components
- categorie E: eslint-disable vervangen in SearchInput.tsx
- src/lib/config.ts centrale config module (localhost defaults)
- CSP in next.config.ts dynamisch via env var
- deploy.sh: geen hardcoded IP meer (REQUIRED arg)
- lib/api/ lib/auth/ lib/wallet/ lib/search-index/ lib/storage/ gesplitst in modules
- ongebruikte bestanden verwijderd: api.ts, auth.tsx, wallet.ts, search-index.ts,
  PaymentPanel.tsx, SearchBar.tsx, proxy.ts, serve-static.js

src/app/explorer/components/PinBadge.tsx

@@ -2,7 +2,7 @@
 
 import { useState } from 'react';
 import { CheckCircle, Pin } from 'lucide-react';
-import { addPin } from '@/lib/api';
+import { addPin } from '@/lib/api/pins';
 
 interface PinBadgeProps {
   cid: string;
@@ -18,8 +18,8 @@ export default function PinBadge({ cid, isPinned, onPin }: PinBadgeProps) {
     try {
       await addPin(cid);
       onPin(cid);
-    } catch {
-      // pin failed silently
+    } catch (err) {
+      console.error('[PinBadge] Failed to pin CID:', err);
     } finally {
       setPinning(false);
     }