fix(ci): stabilize pnpm installation and ensure fail-fast testing

devfront/Dockerfile

@@ -6,7 +6,7 @@ WORKDIR /workspace
 ENV CI=true
 
 # Install pnpm
-RUN npm install -g pnpm
+RUN corepack enable && corepack prepare pnpm@10.5.2 --activate
 
 # Copy workspace configs and common package
 COPY common ./common