chore: convert to Turborepo + npm workspaces monorepo

- Move React/Vite frontend to apps/web/ (@budgetwise/web)
- Add apps/appwrite/ (@budgetwise/appwrite) to source-control the
  Appwrite backend: declarative schema in appwrite.json (5 collections),
  CLI-based deploy.sh for containerized use, functions/ dir for future
  Appwrite Functions
- Add turbo.json for task orchestration (build, deploy, dev)
- Replace .gitlab-ci.yml with Woodpecker CI pipelines in .woodpecker/:
    web-production.yml  — push to main → build + rsync to prod
    web-staging.yml     — push to staging → build + rsync to staging
    web-preview.yml     — PR open → deploy to {pr}.{domain}; PR close → cleanup
    appwrite.yml        — schema changes in apps/appwrite/ → CLI deploy
- All secrets injected via Woodpecker CI (no committed .env files)

apps/web/vite.config.ts

@@ -0,0 +1,58 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import { VitePWA } from 'vite-plugin-pwa';
+
+export default defineConfig({
+  plugins: [
+    react(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      includeAssets: ['icon.svg', 'favicon.ico'],
+      manifest: {
+        name: 'BudgetWise',
+        short_name: 'BudgetWise',
+        description: 'Personal budgeting app with Appwrite sync',
+        theme_color: '#0f172a',
+        background_color: '#0f172a',
+        display: 'standalone',
+        orientation: 'portrait',
+        start_url: '/',
+        id: '/',
+        icons: [
+          {
+            src: '/icon.svg',
+            sizes: 'any',
+            type: 'image/svg+xml',
+            purpose: 'any',
+          },
+          {
+            src: '/icon-192.png',
+            sizes: '192x192',
+            type: 'image/png',
+            purpose: 'any maskable',
+          },
+          {
+            src: '/icon-512.png',
+            sizes: '512x512',
+            type: 'image/png',
+            purpose: 'any maskable',
+          },
+        ],
+      },
+      workbox: {
+        globPatterns: ['**/*.{js,css,html,ico,png,svg,woff2}'],
+        runtimeCaching: [
+          {
+            urlPattern: ({ url }) => url.href.includes('/v1/'),
+            handler: 'NetworkFirst',
+            options: {
+              cacheName: 'appwrite-api',
+              networkTimeoutSeconds: 10,
+              cacheableResponse: { statuses: [0, 200] },
+            },
+          },
+        ],
+      },
+    }),
+  ],
+});