feat: integrate typst preview & fix mermaid style (#14168)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Typst code block preview with interactive rendering controls (zoom,
pan, reset) and user-friendly error messages

* **Style**
  * Centered Mermaid diagram rendering for improved layout

* **Tests**
  * Added end-to-end preview validation tests for Typst and Mermaid

* **Chores**
* Added WebAssembly type declarations and updated frontend packages;
removed a build debug configuration entry

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settings.</sub>
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packages/frontend/core/package.json

@@ -34,6 +34,9 @@
     "@juggle/resize-observer": "^3.4.0",
     "@lit/context": "^1.1.4",
     "@marsidev/react-turnstile": "^1.1.0",
+    "@myriaddreamin/typst-ts-renderer": "^0.7.0-rc2",
+    "@myriaddreamin/typst-ts-web-compiler": "^0.7.0-rc2",
+    "@myriaddreamin/typst.ts": "^0.7.0-rc2",
     "@preact/signals-core": "^1.8.0",
     "@radix-ui/react-collapsible": "^1.1.2",
     "@radix-ui/react-context-menu": "^2.1.15",