feat(app-expo): env variants, local iOS prebuild, and About diagnostics

Align staging/production builds with APP_VARIANT bundle IDs, allow staging HTTP on iOS, add ios-prebuild scripts for TestFlight, and show connected API URL on About for non-production builds.

Co-authored-by: Cursor <cursoragent@cursor.com>

app-expo/scripts/ios-prebuild.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+# 本机 iOS Release：切换 env → expo prebuild → 打开 Xcode 打 Archive 上传 TestFlight。
+#
+# 用法（在仓库任意目录）：
+#   app-expo/scripts/ios-prebuild.sh staging
+#   app-expo/scripts/ios-prebuild.sh production
+#
+# 或通过 npm（在 app-expo 目录）：
+#   npm run ios:prebuild:staging
+#   npm run ios:prebuild:production
+#
+# Xcode 内后续步骤（脚本不会自动执行）：
+#   1. 选 Any iOS Device（或 Generic iOS Device）
+#   2. Product → Archive
+#   3. Distribute App → App Store Connect → Upload（进入 TestFlight）
+
+set -euo pipefail
+
+ENV="${1:-}"
+if [[ -z "$ENV" ]]; then
+  echo "Usage: $(basename "$0") <staging|production|development>" >&2
+  exit 1
+fi
+
+case "$ENV" in
+  staging | production | development) ;;
+  *)
+    echo "Unknown environment: $ENV (expected staging, production, or development)" >&2
+    exit 1
+    ;;
+esac
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT"
+
+echo "==> Switching to .env.${ENV}"
+npm run use-env -- "$ENV"
+
+echo "==> expo prebuild --platform ios --clean"
+npx expo prebuild --platform ios --clean
+
+shopt -s nullglob
+WORKSPACES=(ios/*.xcworkspace)
+shopt -u nullglob
+
+if [[ ${#WORKSPACES[@]} -eq 0 ]]; then
+  echo "No ios/*.xcworkspace found after prebuild." >&2
+  exit 1
+fi
+
+if [[ ${#WORKSPACES[@]} -gt 1 ]]; then
+  echo "Multiple workspaces found; opening the first: ${WORKSPACES[0]}" >&2
+fi
+
+echo "==> Opening ${WORKSPACES[0]}"
+open "${WORKSPACES[0]}"
+
+cat <<EOF
+
+Done. In Xcode:
+  • Select "Any iOS Device" (or a connected device)
+  • Product → Archive
+  • Window → Organizer → Distribute App → App Store Connect
+
+Environment: ${ENV}
+API URL: $(grep -E '^EXPO_PUBLIC_API_URL=' .env 2>/dev/null | cut -d= -f2- || echo '(see .env)')
+EOF

app-expo/scripts/use-env.js

@@ -2,7 +2,7 @@
  * 将 app-expo/.env.<name> 复制为 .env，供 Metro/Expo 读取 EXPO_PUBLIC_*。
  *
  * 参数 name → 源文件：
- *   development → .env.development（本地默认：npm start / prestart）
+ *   development → .env.development（仓库已提交；npm start / prestart 默认）
  *   staging     → .env.staging
  *   production  → .env.production
  *