diff --git a/.github/actions/setup-project/action.yml b/.github/actions/setup-project/action.yml
index a58020ec..8ef0f33b 100644
--- a/.github/actions/setup-project/action.yml
+++ b/.github/actions/setup-project/action.yml
@@ -52,6 +52,11 @@ runs:
           @rollup/rollup-linux-x64-gnu@4.53.3 \
           @tailwindcss/oxide-linux-x64-gnu@4.1.17
 
+    - name: Build shared packages
+      shell: bash
+      # Build shared packages (types, utils, platform, etc.) before apps can use them
+      run: npm run build:packages
+
     - name: Rebuild native modules (root)
       if: inputs.rebuild-node-pty-path == ''
       shell: bash
diff --git a/package.json b/package.json
index 5367c98a..26860ff4 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "dev:server": "npm run dev --workspace=apps/server",
     "dev:full": "concurrently \"npm run dev:server\" \"npm run dev:web\"",
     "build": "npm run build --workspace=apps/ui",
+    "build:packages": "npm run build -w @automaker/types && npm run build -w @automaker/utils -w @automaker/platform -w @automaker/model-resolver -w @automaker/dependency-resolver && npm run build -w @automaker/git-utils",
     "build:server": "npm run build --workspace=apps/server",
     "build:electron": "npm run build:electron --workspace=apps/ui",
     "build:electron:dir": "npm run build:electron:dir --workspace=apps/ui",