release: v0.1.11 — quality & stability improvements

fix(core): clear _outlineTimer in destroy() to prevent post-destroy callbacks
fix(core): remove '<' from BRACKET_PAIRS to avoid HTML tag conflicts
fix(core): setValue now updates outline panel and resets gutter scroll
fix(core): getValue returns '' on destroyed instances (safe API access)
opt(core): _renderGutter skips rebuild when line count unchanged
chore: bump version 0.1.10 → 0.1.11 across all files

src/themes.js

@@ -1,7 +1,7 @@
 /**
  * MetonaEditor Themes — 主题系统（增强版）
  * @module themes
- * @version 0.1.10
+ * @version 0.1.11
  * @description 全局+实例级主题管理、CSS 变量隔离、外部主题跟随、主题继承
  *
  * v0.1.5 增强：