Initiële commit: VibeFinance 3-container opzet

Basislijn van de bestaande applicatie (Vite/React frontend, Express
backend, PostgreSQL) zoals die in de index stond, plus dev-, release-
en documentatiescripts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

frontend/public/icons/vibefinance-logo.svg

@@ -0,0 +1,15 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#6d28d9"/>
+      <stop offset="100%" stop-color="#a855f7"/>
+    </linearGradient>
+  </defs>
+  <rect width="64" height="64" rx="14" fill="url(#bg)"/>
+  <polyline
+    points="8,48 20,28 32,36 44,16 56,26"
+    fill="none" stroke="#fff" stroke-width="5"
+    stroke-linejoin="round" stroke-linecap="round"/>
+  <line x1="8" y1="54" x2="56" y2="54"
+    stroke="rgba(255,255,255,0.35)" stroke-width="3.5"/>
+</svg>