发布 v1.6.2

[GcsSloop]

变更

• 修复账户状态重复写入导致客户端状态重复的问题
• 更新 reference 中 Codex 到 rust-v0.142.5，并兼容最新用量接口字段与端点
• 同步发布版本元数据到 1.6.2
• 稳定设置页备份菜单测试，修复发布分支 CI 竞态

验证

• cd backend && go test ./... -count=1
• npm --prefix frontend run test
• npm --prefix frontend run build
• bash scripts/test/desktop_updater_config_test.sh && bash scripts/test/go_test_with_retry_test.sh && bash scripts/test/notarize_macos_test.sh && bash scripts/test/release_apple_signing_test.sh && bash scripts/test/release_updater_signing_key_test.sh && bash scripts/test/release_version_helpers_test.sh && bash scripts/test/sync_release_metadata_test.sh && bash scripts/test/collect_release_assets_test.sh && bash scripts/test/release_updater_manifest_test.sh && bash scripts/test/package_local_release_test.sh && bash scripts/test/release_msvc_spub_test.sh && bash scripts/test/build_ai_gate_msvc_test.sh
• Dev CI: https://github.com/GcsSloop/ai-gate/actions/runs/28577731315