chore: add test coverage

packages/backend/vitest.config.js

@@ -2,8 +2,25 @@ import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
+    root: './',
     environment: 'node',
     setupFiles: ['./test/setup/global-hooks.js'],
     globals: true,
+    reporters: process.env.GITHUB_ACTIONS ? ['dot', 'github-actions'] : ['dot'],
+    coverage: {
+      reportOnFailure: true,
+      provider: 'v8',
+      reportsDirectory: './coverage',
+      reporter: ['text', 'lcov'],
+      all: true,
+      include: ['**/src/models/**', '**/src/controllers/**'],
+      thresholds: {
+        autoUpdate: true,
+        statements: 93.41,
+        branches: 93.46,
+        functions: 95.95,
+        lines: 93.41,
+      },
+    },
   },
 });