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

public/manifest.json

@@ -1,31 +1,12 @@
 {
   "name": "MAOS IPFS Portal",
   "short_name": "IPFS Portal",
-  "description": "Decentralized storage management for your IPFS node",
+  "description": "Decentralized storage management for IPFS",
   "start_url": "/",
   "display": "standalone",
-  "background_color": "#0a0e17",
+  "background_color": "#0f172a",
   "theme_color": "#0891b2",
-  "orientation": "any",
-  "categories": ["utilities", "productivity"],
   "icons": [
-    {
-      "src": "/icon-192.png",
-      "sizes": "192x192",
-      "type": "image/png",
-      "purpose": "any maskable"
-    },
-    {
-      "src": "/icon-512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "any maskable"
-    },
-    {
-      "src": "/icon-512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "maskable"
-    }
+    { "src": "/favicon.svg", "sizes": "any", "type": "image/svg+xml" }
   ]
 }