完善借款、编号、付款与预算并发及验收（09-06-release-gate-integrity）

汇总已落盘的借款本金与还款、兼容历史编号的周期化编号、付款责任与回单核验、报销进度和排序、PWA/采购事务、错误原因与日期校验及ERP退役。
统一共享预算池锁序和锁后判断，恢复差旅原预算选择，补原因码固定夹具及反向完整性检查。
纳入配套迁移、测试、受管QA、分层验收合同、规约及任务记录；原始证据留在ignored artifacts。

关联任务：09-17-company-loan-principal-repayment、09-17-erp-exclusive-retirement、09-18-reimbursement-periodic-numbering、09-08-reimbursement-payment-closeout、09-18-local-concurrency-product-fixes、09-19-budget-pool-concurrency、09-05-error-explainability-payment-readiness。
预算补审由Claude定向验证2文件928项通过，原4446/28及r6结果仍仅对应各自历史输入；本轮未重跑测试。
完整新候选门禁、R1真实入口接入与12项公网义务仍开放。生产编号未启用、差旅仍冻结；不推送、不部署，不宣称发布资格。

scripts/qa/full-local-environment-inner.sh

@@ -22,10 +22,15 @@ ip addr add 192.0.2.1/30 dev qaonline
 ip addr add 192.0.2.2/30 dev qapeer
 ip link set qaonline up
 ip link set qapeer up
+# Both veth ends live here; this route has no gateway or path to the host.
+# GLib/WebKit needs a link default route to report native network availability.
+ip route add default dev qaonline scope link
 node "$ROOT_DIR/scripts/qa/full-local-environment.mjs" initialize
 node "$ROOT_DIR/scripts/qa/browser-environment-probe.mjs" native
 mkdir "$QA_MANAGED_SCRATCH/tmp" "$QA_MANAGED_SCRATCH/storage"
 export TMPDIR="$QA_MANAGED_SCRATCH/tmp" STORAGE_DIR="$QA_MANAGED_SCRATCH/storage"
+# Force smoke-test to create its own synthetic fallback, never read a shared /tmp sample.
+export SAMPLE_FILE="$QA_MANAGED_SCRATCH/tmp/synthetic-smoke-input.pdf"
 python3 "$ROOT_DIR/scripts/qa/local-postgres-proxy.py" "$QA_MANAGED_SOCKET/.s.PGSQL.5432" &
 PROXY_PID=$!
 node "$ROOT_DIR/scripts/qa/full-local-environment.mjs" verify