Add a markdown viewer for .md files and live typed preview.

Render GitHub-flavored markdown in the browser with marked and sanitize HTML with DOMPurify.

Co-authored-by: Cursor <cursoragent@cursor.com>

package-lock.json

@@ -3775,6 +3775,16 @@
         "@types/d3-selection": "*"
       }
     },
+    "node_modules/@types/dompurify": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/@types/dompurify/-/dompurify-3.0.5.tgz",
+      "integrity": "sha512-1Wg0g3BtQF7sSb27fJQAKck1HECM6zV1EB66j8JH9i3LCjYabJa0FSdiSgsD5K/RbrsR0SiraKacLB+T8ZVYAg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/trusted-types": "*"
+      }
+    },
     "node_modules/@types/estree": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.9.tgz",
@@ -3973,8 +3983,8 @@
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
       "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
-      "license": "MIT",
-      "optional": true
+      "devOptional": true,
+      "license": "MIT"
     },
     "node_modules/@types/web-bluetooth": {
       "version": "0.0.20",
@@ -5545,9 +5555,9 @@
       "license": "MIT"
     },
     "node_modules/dompurify": {
-      "version": "3.4.12",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.12.tgz",
-      "integrity": "sha512-zQvGet8Z2sWbQhCmfFz/T5QWH2oBmjnqK3qvOjaqaNLrLEF912WamU+ohnTp0TCep/MFVHpdJuCZEdFOdTnEFg==",
+      "version": "3.4.15",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.15.tgz",
+      "integrity": "sha512-EUBjM+B+lkDE41iE82DDSCfkoPGfXx8IxFxPMjNzm/Uk4xDet77rTN9wqlxlVg71kK7XGuUMv6wUxJUwwv+Xyw==",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
@@ -9366,11 +9376,13 @@
         "@rhwp/editor": "^0.7.18",
         "@vueuse/core": "^11.3.0",
         "ag-psd": "^31.0.2",
+        "dompurify": "^3.4.15",
         "draco3d": "^1.5.7",
         "element-plus": "^2.14.3",
         "fflate": "^0.8.2",
         "jscanify": "^1.4.3",
         "lodash-es": "^4.17.21",
+        "marked": "^16.4.2",
         "mermaid": "^11.16.0",
         "occt-import-js": "^0.0.22",
         "online-3d-viewer": "^0.18.0",
@@ -9391,6 +9403,7 @@
         "@fontsource-variable/noto-sans-kr": "^5.3.0",
         "@fontsource/noto-sans-kr": "^5.3.0",
         "@noto-pdf-ts/fonts-kr": "^0.0.1-alpha.0",
+        "@types/dompurify": "^3.0.5",
         "@types/react": "^19.2.17",
         "@types/react-dom": "^19.2.3",
         "@types/three": "^0.172.0",