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

src/stores/companies.js

@@ -0,0 +1,73 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import api from '@/lib/api'
+
+export const useCompaniesStore = defineStore('companies', () => {
+  const companies = ref([])
+  const currentCompany = ref(null)
+  const loading = ref(false)
+  const error = ref(null)
+  const meta = ref({ page: 1, limit: 25, total: 0 })
+
+  async function fetchCompanies(params = {}) {
+    loading.value = true
+    error.value = null
+    
+    try {
+      const response = await api.get('/api/v1/companies', { params })
+      companies.value = response.data.data
+      meta.value = response.data.meta
+    } catch (e) {
+      error.value = e.response?.data?.error?.message || 'Fehler beim Laden'
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function fetchCompany(id) {
+    loading.value = true
+    try {
+      const response = await api.get(`/api/v1/companies/${id}`)
+      currentCompany.value = response.data.data
+      return currentCompany.value
+    } catch (e) {
+      error.value = e.response?.data?.error?.message || 'Firma nicht gefunden'
+      return null
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function createCompany(data) {
+    try {
+      const response = await api.post('/api/v1/companies', data)
+      companies.value.unshift(response.data.data)
+      return response.data.data
+    } catch (e) {
+      error.value = e.response?.data?.error?.message || 'Fehler beim Erstellen'
+      throw e
+    }
+  }
+
+  async function deleteCompany(id) {
+    try {
+      await api.delete(`/api/v1/companies/${id}`)
+      companies.value = companies.value.filter(c => c.id !== id)
+    } catch (e) {
+      error.value = e.response?.data?.error?.message || 'Fehler beim Löschen'
+      throw e
+    }
+  }
+
+  return {
+    companies,
+    currentCompany,
+    loading,
+    error,
+    meta,
+    fetchCompanies,
+    fetchCompany,
+    createCompany,
+    deleteCompany
+  }
+})