Drop the README notes: toast language is not README material

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -427,7 +427,7 @@ Without it LightCraft builds and runs the same, but Chinese and Japanese text ha
 repo — the standard for what goes there lives with it: see the [craft-fonts README](https://github.com/storytold/craft-fonts#readme).
 
 **Interface language:** **Edit → Language** (English, 简体中文, 繁體中文（台灣）, 日本語, Português (Brasil), Español, Deutsch, Русский, Français, Українська, Čeština, ქართული) or **Settings → General →
-Language**; the choice applies immediately and persists. Info Overlay mode-change toasts use the selected interface language. See [docs/localization.md](docs/localization.md).
+Language**; the choice applies immediately and persists. See [docs/localization.md](docs/localization.md).
 
 **Logs:** the desktop app writes its log to standard error and to `logs/lightcraft.log` in its settings folder
 (Linux `$XDG_CONFIG_HOME/lightcraft/logs/`, by default `~/.config/lightcraft/logs/`; macOS

README.zh-hans.md

@@ -394,7 +394,7 @@ CRAFT_FONTS_DIR=../craft-fonts cargo run --release -p lightcraft
 本仓库；见 [craftrules `standards/fonts.md`](https://github.com/storytold/craftrules/blob/main/standards/fonts.md)。
 
 **界面语言：** **编辑 → 语言**（English、简体中文、繁體中文（台灣）、日本語、Português (Brasil)、Español、Deutsch、Русский、Français）或 **设置 → 一般 →
-语言**；选择立即生效并会保留。信息叠加模式切换提示使用所选界面语言。见 [docs/localization.md](docs/localization.md)。
+语言**；选择立即生效并会保留。见 [docs/localization.md](docs/localization.md)。
 
 **日志：** 桌面应用把日志写到标准错误，以及设置文件夹里的 `logs/lightcraft.log`
 （Linux `$XDG_CONFIG_HOME/lightcraft/logs/`，默认 `~/.config/lightcraft/logs/`；macOS