diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0da3e51..702e372 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,4 +38,4 @@ jobs:
         run: npm run lint
 
       - name: Test
-        run: npm test
+        run: npm run test:coverage
diff --git a/vite.config.ts b/vite.config.ts
index 9fb9ba4..0525a5b 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -15,6 +15,14 @@ export default defineConfig({
         'src/test/',
         '**/*.d.ts',
       ],
+      // Ratchet floor: locked just below current coverage so CI fails on
+      // regression without going red on today's baseline. Raise as coverage grows.
+      thresholds: {
+        statements: 60,
+        branches: 50,
+        functions: 65,
+        lines: 60,
+      },
     },
   },
 })