fix: add --force flag to npm ci for platform-specific dependencies

npm ci without --force rejects platform-specific packages like dmg-license
which is macOS-only. The --force flag tells npm to proceed even when
platform constraints are violated.

This allows Linux containers to skip dmg-license and continue with the
install, matching the behavior we want for Docker development.

docker-compose.dev-server.yml

@@ -75,8 +75,9 @@ services:
       - -c
       - |
         # Install as root to avoid permission issues with named volumes
+        # Use --force to skip platform-specific devDependencies (dmg-license is macOS-only)
         echo 'Installing dependencies...' &&
-        npm ci --legacy-peer-deps &&
+        npm ci --legacy-peer-deps --force &&
         echo 'Building shared packages...' &&
         npm run build:packages &&