diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e206a9..044ae5b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,8 +21,11 @@ jobs:
       - name: Install dependencies
         run: bun install --frozen-lockfile
 
+      - name: Build
+        run: bun run build
+
       - name: Typecheck
-        run: bun run lint
+        run: bun run typecheck
 
       # The gates run before the suite deliberately. They were all green-boarded
       # before this job existed, and one red test must not be able to skip them:
diff --git a/package.json b/package.json
index 2c328aa..c36e665 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,7 @@
     "prepack": "bun run scan:artifact",
     "postinstall": "mkdir -p $HOME/.hasna/monitor 2>/dev/null || true",
     "test": "bun test",
+    "typecheck": "tsc --noEmit",
     "lint": "bunx tsc --noEmit",
     "monitor": "bun run ./bins/monitor.ts",
     "monitor-mcp": "bun run ./bins/monitor-mcp.ts",