feat(editor): migrate typst mermaid to native (#14499)

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

* **New Features**
* Native/WASM Mermaid and Typst SVG preview rendering on desktop and
mobile, plus cross-platform Preview plugin integrations.

* **Improvements**
* Centralized, sanitized rendering bridge with automatic Typst
font-directory handling and configurable native renderer selection.
* More consistent and robust error serialization and worker-backed
preview flows for improved stability and performance.

* **Tests**
* Extensive unit and integration tests for preview rendering, font
discovery, sanitization, and error serialization.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

deny.toml

@@ -0,0 +1,48 @@
+[graph]
+all-features = true
+exclude-dev = true
+targets = [
+  "x86_64-unknown-linux-gnu",
+  "aarch64-apple-darwin",
+  "x86_64-apple-darwin",
+  "x86_64-pc-windows-msvc",
+  "aarch64-linux-android",
+  "aarch64-apple-ios",
+  "aarch64-apple-ios-sim",
+]
+
+[licenses]
+allow = [
+  "0BSD",
+  "Apache-2.0",
+  "Apache-2.0 WITH LLVM-exception",
+  "BSD-2-Clause",
+  "BSD-3-Clause",
+  "BSL-1.0",
+  "CC0-1.0",
+  "CDLA-Permissive-2.0",
+  "ISC",
+  "MIT",
+  "MPL-2.0",
+  "Unicode-3.0",
+  "Unlicense",
+  "Zlib",
+]
+confidence-threshold = 0.93
+unused-allowed-license = "allow"
+version = 2
+
+  [[licenses.exceptions]]
+  allow = ["AGPL-3.0-only"]
+  crate = "llm_adapter"
+
+  [[licenses.exceptions]]
+  allow = ["AGPL-3.0-or-later"]
+  crate = "memory-indexer"
+
+  [[licenses.exceptions]]
+  allow = ["AGPL-3.0-or-later"]
+  crate = "path-ext"
+
+  [licenses.private]
+  ignore = true