Implement Django backend and Vue frontend structure

- Django backend with projects, templates, exports apps
- SQLite database models for Project, Asset, CardLayer
- REST API endpoints for project management
- Vue frontend with Vite, Element Plus, Fabric.js
- Home page for project selection
- Editor page with Fabric.js canvas integration

frontend/src/api/export.js

@@ -0,0 +1,15 @@
+import axios from 'axios'
+
+const API_BASE = '/api'
+
+export async function exportProject(projectId, resolution = 'standard', cards = 'all') {
+  const response = await axios.post(`${API_BASE}/projects/${projectId}/export/`, {
+    resolution,
+    cards
+  })
+  return response.data
+}
+
+export function getExportUrl(projectId, cardKey, resolution = 'standard') {
+  return `${API_BASE}/projects/${projectId}/export/${cardKey}/?resolution=${resolution}`
+}

frontend/src/api/project.js

@@ -0,0 +1,27 @@
+import axios from 'axios'
+
+const API_BASE = '/api'
+
+export async function getProjects() {
+  const response = await axios.get(`${API_BASE}/projects/`)
+  return response.data
+}
+
+export async function createProject(data) {
+  const response = await axios.post(`${API_BASE}/projects/`, data)
+  return response.data
+}
+
+export async function getProject(id) {
+  const response = await axios.get(`${API_BASE}/projects/${id}/`)
+  return response.data
+}
+
+export async function updateProject(id, data) {
+  const response = await axios.put(`${API_BASE}/projects/${id}/`, data)
+  return response.data
+}
+
+export async function deleteProject(id) {
+  await axios.delete(`${API_BASE}/projects/${id}/`)
+}

frontend/src/api/template.js

@@ -0,0 +1,13 @@
+import axios from 'axios'
+
+const API_BASE = '/api'
+
+export async function getTemplates() {
+  const response = await axios.get(`${API_BASE}/templates/`)
+  return response.data
+}
+
+export async function getTemplate(id) {
+  const response = await axios.get(`${API_BASE}/templates/${id}/`)
+  return response.data
+}