feat: Mini-Cloud Plattform - komplette Implementierung Phase 0-8

Selbstgehostete Web-Cloud mit Dateiverwaltung, Kalender, Kontakte,
Email-Webclient, Office-Viewer und Passwort-Manager.

Backend (Flask/Python):
- JWT-Auth mit Access/Refresh Tokens, Benutzerverwaltung
- Dateien: Upload/Download, Ordner, Berechtigungen, Share-Links
- Kalender: CRUD, Teilen, iCal-Export, CalDAV well-known URLs
- Kontakte: Adressbuecher, vCard-Export, Teilen
- Email: IMAP/SMTP-Proxy, Multi-Account
- Office-Viewer: DOCX/XLSX/PPTX/PDF Vorschau
- Passwort-Manager: AES-256-GCM clientseitig, KeePass-Import
- Sync-API fuer Desktop/Mobile-Clients
- SQLite mit WAL-Modus

Frontend (Vue 3 + PrimeVue):
- Datei-Explorer mit Breadcrumbs und Share-Dialogen
- Monatskalender mit Event-Verwaltung
- Kontaktliste mit Adressbuch-Sidebar
- Email-Client mit 3-Spalten-Layout
- Passwort-Manager mit TOTP und Passwort-Generator
- Admin-Panel, Settings, oeffentliche Share-Seite

Docker: Multi-Stage Build, Bind Mounts (keine Volumes)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/stores/files.js

@@ -0,0 +1,84 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import apiClient from '../api/client'
+
+export const useFilesStore = defineStore('files', () => {
+  const files = ref([])
+  const breadcrumb = ref([])
+  const currentParentId = ref(null)
+  const loading = ref(false)
+
+  async function loadFiles(parentId = null) {
+    loading.value = true
+    try {
+      currentParentId.value = parentId
+      const params = parentId ? { parent_id: parentId } : {}
+      const response = await apiClient.get('/files', { params })
+      files.value = response.data.files
+      breadcrumb.value = response.data.breadcrumb
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function createFolder(name, parentId = null) {
+    const response = await apiClient.post('/files/folder', {
+      name,
+      parent_id: parentId,
+    })
+    await loadFiles(parentId)
+    return response.data
+  }
+
+  async function uploadFile(file, parentId = null) {
+    const formData = new FormData()
+    formData.append('file', file)
+    if (parentId) formData.append('parent_id', parentId)
+
+    const response = await apiClient.post('/files/upload', formData, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    })
+    await loadFiles(parentId)
+    return response.data
+  }
+
+  async function deleteFile(fileId) {
+    await apiClient.delete(`/files/${fileId}`)
+    await loadFiles(currentParentId.value)
+  }
+
+  async function renameFile(fileId, newName) {
+    await apiClient.put(`/files/${fileId}`, { name: newName })
+    await loadFiles(currentParentId.value)
+  }
+
+  async function moveFile(fileId, newParentId) {
+    await apiClient.put(`/files/${fileId}`, { parent_id: newParentId })
+    await loadFiles(currentParentId.value)
+  }
+
+  async function createShareLink(fileId, options = {}) {
+    const response = await apiClient.post(`/files/${fileId}/share`, options)
+    return response.data
+  }
+
+  async function getShareLinks(fileId) {
+    const response = await apiClient.get(`/files/${fileId}/shares`)
+    return response.data
+  }
+
+  async function deleteShareLink(token) {
+    await apiClient.delete(`/share/${token}`)
+  }
+
+  function downloadUrl(fileId) {
+    return `/api/files/${fileId}/download`
+  }
+
+  return {
+    files, breadcrumb, currentParentId, loading,
+    loadFiles, createFolder, uploadFile, deleteFile,
+    renameFile, moveFile, createShareLink, getShareLinks,
+    deleteShareLink, downloadUrl,
+  }
+})