feat: Pulse CRM Frontend v1.0

Vue 3 + Vite + Tailwind CSS

Views:
- Dashboard mit Stats & Aktivitäten
- Kontakte mit Suche & CRUD
- Firmen mit Cards & CRUD
- Pipeline Kanban Board (Drag & Drop)
- Aktivitäten mit Filter & Timeline
- Settings mit DSGVO-Info

Features:
- Dark Theme (Pulse Design)
- Responsive Layout
- Pinia State Management
- Vue Router mit Guards
- Axios API Client

Task: #13 Frontend UI

tailwind.config.js

@@ -0,0 +1,36 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./index.html",
+    "./src/**/*.{vue,js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        primary: {
+          50: '#eff6ff',
+          100: '#dbeafe',
+          200: '#bfdbfe',
+          300: '#93c5fd',
+          400: '#60a5fa',
+          500: '#3b82f6',
+          600: '#2563eb',
+          700: '#1d4ed8',
+          800: '#1e40af',
+          900: '#1e3a8a',
+        },
+        pulse: {
+          dark: '#0f172a',
+          card: '#1e293b',
+          border: '#334155',
+          text: '#e2e8f0',
+          muted: '#94a3b8',
+        }
+      },
+      fontFamily: {
+        sans: ['Inter', 'system-ui', 'sans-serif'],
+      },
+    },
+  },
+  plugins: [],
+}