fix(build): drop custom manualChunks — cross-chunk TDZ crashed production boot

The vendor-* split created circular imports; the production bundle died with
'ReferenceError: Cannot access X before initialization' (vendor-charts, then
vendor-bitcoin). Dev mode and vite build do not execute the bundle, so it only
surfaced once deployed. Rollup's default splitting is cycle-safe.

vite.config.ts

@@ -89,68 +89,16 @@ export default defineConfig(() => ({
         manualChunks: undefined,
         inlineDynamicImports: true,
       } : {
-        // Split large vendor libraries into separate cacheable chunks.
-        // Users only re-download a chunk when that specific library updates.
-        manualChunks(id) {
-          // Map — Leaflet is large (~150KB), isolate it so non-map pages don't pay for it
-          if (id.includes('leaflet') || id.includes('ngeohash')) {
-            return 'vendor-map';
-          }
-          // Media — hls.js is large (~500KB) and only used by the radio/video
-          // players. Split it so the map homepage never downloads it.
-          if (id.includes('hls.js')) {
-            return 'vendor-media';
-          }
-          // QR scanning — html5-qrcode (~300KB) is only used in wallet/scan
-          // flows; keep it out of the initial payload.
-          if (id.includes('html5-qrcode') || id.includes('qrcode')) {
-            return 'vendor-qr';
-          }
-          // Charts — recharts (~400KB) is only used on stats pages.
-          if (id.includes('recharts') || id.includes('d3-')) {
-            return 'vendor-charts';
-          }
-          // Nostr core — changes infrequently, worth caching separately
-          if (id.includes('nostr-tools') || id.includes('@nostrify') || id.includes('@noble')) {
-            return 'vendor-nostr';
-          }
-          // Bitcoin / Lightning — large, rarely changes
-          if (
-            id.includes('@cashu') ||
-            id.includes('bitcoinjs-lib') ||
-            id.includes('@scure') ||
-            id.includes('@bitcoinerlab') ||
-            id.includes('ecpair') ||
-            id.includes('@getalby') ||
-            id.includes('npubcash')
-          ) {
-            return 'vendor-bitcoin';
-          }
-          // React ecosystem — very stable, long cache life.
-          // IMPORTANT: `react` (core, with useLayoutEffect etc.) MUST live in
-          // the SAME chunk as react-dom / react-router. If react-dom is split
-          // into vendor-react but core `react` lands elsewhere, react-dom runs
-          // before React is defined → "Cannot read properties of undefined
-          // (reading 'useLayoutEffect')". The `/react/` and scheduler matches
-          // below keep the whole React runtime together and loaded first.
-          if (
-            id.includes('node_modules/react/') ||
-            id.includes('node_modules/react-dom/') ||
-            id.includes('node_modules/scheduler/') ||
-            id.includes('react-router') ||
-            id.includes('react/jsx-runtime')
-          ) {
-            return 'vendor-react';
-          }
-          // Radix UI components — large but stable
-          if (id.includes('@radix-ui')) {
-            return 'vendor-radix';
-          }
-          // TanStack Query
-          if (id.includes('@tanstack')) {
-            return 'vendor-query';
-          }
-        },
+        // Web build: let Rollup decide chunk boundaries.
+        //
+        // A custom manualChunks() used to split large vendors into `vendor-*`
+        // chunks. That produced cross-chunk circular imports and crashed boot
+        // of the production bundle with
+        // "ReferenceError: Cannot access '<x>' before initialization" (TDZ) —
+        // first in vendor-charts, then vendor-bitcoin. Rollup's default
+        // splitting keeps interdependent modules together and is safe. Only
+        // re-introduce manual chunks with a runtime smoke test of the built
+        // bundle (dev mode does NOT catch this).
       },
     },
   },