Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

frontend/vitest.config.ts

@@ -0,0 +1,34 @@
+import { defineConfig } from 'vitest/config';
+import { svelte } from '@sveltejs/vite-plugin-svelte';
+
+export default defineConfig({
+  plugins: [svelte({ hot: !process.env.VITEST })],
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      include: ['src/**/*.{js,ts,svelte}'],
+      exclude: [
+        'node_modules/',
+        'src/**/*.test.{js,ts}',
+        'src/**/*.spec.{js,ts}',
+        '.svelte-kit/**',
+        'build/**',
+      ],
+      thresholds: {
+        lines: 80,
+        functions: 80,
+        branches: 80,
+        statements: 80,
+      },
+    },
+  },
+  resolve: {
+    alias: {
+      $lib: '/src/lib',
+    },
+  },
+});
+