优化合同气瓶绑定与启用失败提示

- 将绑定气瓶入口移至合同列表，仅草稿合同显示
- 自动预填所选合同并保留返回路径
- 细分附件、有效期、气瓶绑定和状态校验失败原因
- 增加前后端回归检查及中文操作日志

frontend/platform_admin/package.json

@@ -17,6 +17,7 @@
     "account-roles:check": "node scripts/check-account-role-presentation.mjs",
     "avatar-retry:check": "node scripts/check-avatar-upload-cache.mjs",
     "contract-attachment:check": "node scripts/check-contract-attachment-control.mjs",
+    "contract-product-entry:check": "node scripts/check-contract-product-entry.mjs",
     "staff-organization:check": "node scripts/check-staff-organization-linkage.mjs",
     "staff-relations:check": "node scripts/check-staff-relation-policy.mjs",
     "user-address-display:check": "node scripts/check-user-address-relation-display.mjs",