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/style-system.md

@@ -2,8 +2,10 @@
 
 保证一致性与灵活性的风格管理方案
 
+<v-clicks>
+
 <Item title="🏗️ 工程风格（Project Style）">
-全局风格配置，以 kvPairs 存储（如 `artStyle=pixel`）。同一工程下所有素材自动继承，保证风格统一。
+全局风格配置，以 kvPairs 存储（如 `artStyle=pixel`）。同一工程下所有素材自动继承。
 </Item>
 
 <Item title="🔀 任务风格覆盖（Task Override）">
@@ -13,3 +15,10 @@
 <Item title="⚙️ 合并逻辑">
 `finalStyle = merge(projectStyle, taskStyle)` — 工程风格为基底，任务风格逐键覆盖。自定义标签（`custom:` 前缀）自动提取注入提示词。
 </Item>
+
+</v-clicks>
+
+<!--
+演示：假设工程风格 artStyle=pixel, palette=warm
+任务覆盖 palette=cool → 最终 palette=cool，其他继承
+-->