feat: expand gen2D deck with deep technical slides and interactive elements

- Add 5 new slide pages: eino-deep-dive, ratelimit-overview, ratelimit-lua, async-deep-dive, harness
- Add 4 new drawio SVGs: pipeline-detail, ratelimit, async-task, harness
- Update all existing slides with v-clicks progressive reveal
- Add presenter notes and interactive prompts
- Expand slides.md to register all new pages (16 → 25+ slides)
- Fix text overflow by trimming content per Item block
- Add Eino Graph deep dive: WithGenLocalState, Pre/Post Handler, branch routing
- Add rate limiting section: algorithm comparison, Lua script, Gin middleware
- Add async task deep dive: TaskQueue FIFO, context progress injection
- Add consistency section: style/pipeline/data/deployment 4-layer guarantees

decks/gen2D/pages/prompt-agent.md

@@ -2,18 +2,22 @@
 
 Eino Chain 驱动的智能提示词生成
 
+<v-clicks>
+
 <Item title="① 风格合并">
-`finalStyle = merge(projectStyle, taskStyle)` — 工程风格为基底，任务风格逐键覆盖。自定义标签自动提取。
+`finalStyle = merge(projectStyle, taskStyle)` — 工程风格为基底，任务风格逐键覆盖。
 </Item>
 
 <Item title="② 三段式提示词组装">
-**主体描述**（用户输入）+ **风格约束**（美术风格、色调、线条）+ **技术规格**（尺寸、格式、透明背景）
+**【主题】** 画面主体与场景 + **【风格】** 艺术风格与视觉特征 + **【技术】** 分辨率、格式等参数
 </Item>
 
 <Item title="③ LLM 优化 + 回退机制">
-调用 Eino Chain 发给 DeepSeek 润色。**无 API Key 自动回退模板**，失败时注入重试上下文。
+调用 Eino Chain 发给 DeepSeek 润色。无 API Key 自动回退模板，失败时注入重试上下文。
 </Item>
 
-<div class="flex justify-center">
-  <img src="../public/prompt-agent.svg" class="w-full max-h-[160px] object-contain" />
+</v-clicks>
+
+<div class="flex justify-center mt-2">
+  <img src="../public/prompt-agent.svg" class="w-full max-h-[140px] object-contain" />
 </div>