fix: use relative paths for SVG imports to pass Vite fs.allow during build

Slidev converts <img src> to ES imports during build. Absolute paths like
/pipeline.svg resolve to the filesystem root, failing the slidev:slide-import-guard
plugin. Changed to relative ../public/ paths so imports resolve within the project.

decks/gen2D/pages/architecture.md

@@ -1,5 +1,5 @@
 # 系统架构全景
 
 <div class="mt-2 flex justify-center">
-  <img src="/architecture.svg" class="w-full max-h-[500px] object-contain" />
+  <img src="../public/architecture.svg" class="w-full max-h-[500px] object-contain" />
 </div>

decks/gen2D/pages/data-model.md

@@ -3,7 +3,7 @@
 四表结构，清晰的实体关系
 
 <div class="flex justify-center">
-  <img src="/data-model.svg" class="w-full max-h-[250px] object-contain" />
+  <img src="../public/data-model.svg" class="w-full max-h-[250px] object-contain" />
 </div>
 
 <div class="grid grid-cols-2 gap-4 mt-2">

decks/gen2D/pages/deployment.md

@@ -3,7 +3,7 @@
 Docker Compose 双容器 + 一键部署
 
 <div class="flex justify-center">
-  <img src="/deployment.svg" class="w-full max-h-[300px] object-contain" />
+  <img src="../public/deployment.svg" class="w-full max-h-[300px] object-contain" />
 </div>
 
 <Item title="🐳 容器化方案">

decks/gen2D/pages/pipeline.md

@@ -15,5 +15,5 @@
 </Item>
 
 <div class="mt-4 flex justify-center">
-  <img src="/pipeline.svg" class="w-full max-h-[180px] object-contain" />
+  <img src="../public/pipeline.svg" class="w-full max-h-[180px] object-contain" />
 </div>

decks/gen2D/pages/prompt-agent.md

@@ -15,5 +15,5 @@ Eino Chain 驱动的智能提示词生成
 </Item>
 
 <div class="flex justify-center">
-  <img src="/prompt-agent.svg" class="w-full max-h-[160px] object-contain" />
+  <img src="../public/prompt-agent.svg" class="w-full max-h-[160px] object-contain" />
 </div>