Initial commit: Shop Database Flask Application

Flask backend with Vue 3 frontend for shop floor machine management.
Includes database schema export for MySQL shopdb_flask database.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/main.js

@@ -0,0 +1,11 @@
+import { createApp } from 'vue'
+import { createPinia } from 'pinia'
+import router from './router'
+import App from './App.vue'
+
+const app = createApp(App)
+
+app.use(createPinia())
+app.use(router)
+
+app.mount('#app')