fix: build fails if core package is not released

Author: wf9a5m75

.github/workflows/npm-publish.yml

@@ -30,12 +30,24 @@ jobs:
           registry-url: https://registry.npmjs.org
           cache: npm
 
+      # Internal packages may not exist in the npm registry yet. Normalize
+      # their dependency specs temporarily so npm links every dependency from
+      # the checked-out workspaces instead of trying to download it.
+      - name: Link local workspace packages
+        run: node scripts/link-local-workspaces.mjs
+
       - name: Install dependencies
-        run: npm ci --no-audit --no-fund
+        run: npm install --no-audit --no-fund
 
       - name: Build publishable packages
         run: npm run build:packages
 
+      # link-local-workspaces.mjs changes internal dependency specs to "*".
+      # Restore the committed manifests after the build so those temporary
+      # specs are never included in a published package.
+      - name: Restore package manifests for publishing
+        run: git submodule foreach --recursive 'git restore --source=HEAD -- package.json'
+
       - name: Preview npm packages
         shell: bash
         run: |