style: optimize gen2D deck layout, animations, and visual hierarchy

- style-keys.md: add v-clicks to 3x2 grid for staggered animation
- eino-graph.md: two-column layout (code left, Items right)
- eino-deep-dive.md: two-column layout for both slides, code+Items side-by-side
- async-deep-dive.md: two-column layout for both slides, SVG integrated
- harness.md: two-column layout for slide 1 (code left, Items right)
- request-journey.md: two-column layout for journey steps
- data-model.md: add v-clicks to grid items, increase diagram height
- architecture/pipeline/prompt-agent: increase SVG max-height for better visibility

decks/gen2D/pages/style-keys.md

@@ -4,6 +4,8 @@
 
 <div class="grid grid-cols-3 gap-4 mt-4">
 
+<v-clicks>
+
 <Item title="🎨 美术风格 artStyle">
 pixel（像素）、cartoon（卡通）、vector（矢量）、realistic（写实）、flat（扁平）、anime（动漫）
 </Item>
@@ -28,8 +30,10 @@ bright（明亮）、dramatic（戏剧）、neon（霓虹）、soft（柔光）
 cheerful（欢快）、dark（暗黑）、epic（史诗）、calm（宁静）、mysterious（神秘）、playful（活泼）
 </Item>
 
+</v-clicks>
+
 </div>
 
-<div class="mt-4 text-sm text-gray-400">
+<div v-click class="mt-4 text-sm text-gray-400">
   支持自定义标签：<code>custom:</code> 前缀的键值对会被自动提取到提示词中
 </div>