fix(frontend): pnpm TTY error and lockfile mismatch in non-interactive environments

- Set CI=true in Dockerfiles and pnpm commands to avoid TTY issues
- Use --no-frozen-lockfile in runtime scripts to allow lockfile updates during development/startup
- Resolves #890

scripts/run_adminfront_ci_tests.sh

@@ -201,7 +201,7 @@ set +e
     if ! command -v pnpm >/dev/null 2>&1; then
       run_with_retry 3 npm install -g pnpm
     fi
-    run_with_retry 3 pnpm install -C ../common --no-frozen-lockfile --store-dir "$pnpm_store_dir"
+    run_with_retry 3 CI=true pnpm install -C ../common --no-frozen-lockfile --store-dir "$pnpm_store_dir"
   fi
 ) 2>&1 | tee reports/adminfront-install.log
 install_exit_code=${PIPESTATUS[0]}