blink visual effects

## Blink 0.3.0 — Complete Rewrite

  - Fully rewritten as a standard NeoForge project (Java 21 + Gradle). No longer MCreator-generated; zero mixins.
  - New blink animation: fast close, slow open, softly feathered eyelid edges, and a brief pause at full closure — much closer to a real blink.
  - Eye state is now server-authoritative and synchronized. Works correctly in multiplayer and on dedicated servers.
  - New in-game config screen (Mods list → Blink → Config). Every gameplay and visual parameter is adjustable at any time.
  - Upper eyelid weight is a single control; the lower eyelid auto-complements (default 80 / 20).
  - Auto-blink interval = minimum + random extra (default 5 + 0~5 seconds).
  - Potion of Focus (Night Vision + Ender's Eye) now pauses auto-blinking while active.
  - Smooth fade-to-black when sleeping.
  - Updated mod icon and potion effect icon.
  - Fixed: closing your eyes had no effect on Endermen in multiplayer in the previous version.

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  ## 中文说明

  - 完全重写为标准 NeoForge 工程（Java 21 + Gradle），脱离 MCreator，零 mixin
  - 眨眼动画重做：快闭慢开、柔和羽化、完全闭合短暂停顿
  - 闭眼状态服务端权威同步，多人游戏 / 专用服务器完全可用
  - 新增游戏内配置界面，所有参数随时可调
  - 上眼皮权重单向控制（下眼皮自动互补，默认 80/20）
  - 专注药水改为暂停自动眨眼；睡觉黑幕渐入渐出