feat(chat): add KaTeX math rendering for LaTeX expressions in markdown

Add katex, remark-math, and rehype-katex packages. Configure both
ReactMarkdown instances with rehypeKatex plugin so inline ($...$)
and block ($$...$$) LaTeX math renders properly in chat bubbles.

package-lock.json

@@ -26,6 +26,7 @@
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "date-fns": "^4.4.0",
+        "katex": "^0.17.0",
         "lucide-react": "^1.17.0",
         "orval": "^8.15.0",
         "react": "^19.2.6",
@@ -34,8 +35,10 @@
         "react-resizable-panels": "^4.11.2",
         "react-router": "^7.17.0",
         "react-syntax-highlighter": "^16.1.1",
+        "rehype-katex": "^7.0.1",
         "remark-breaks": "^4.0.0",
         "remark-gfm": "^4.0.1",
+        "remark-math": "^6.0.0",
         "sonner": "^2.0.7",
         "tailwind-merge": "^3.6.0",
         "tailwindcss": "^4.3.0",
@@ -43,6 +46,7 @@
       },
       "devDependencies": {
         "@eslint/js": "^10.0.1",
+        "@types/katex": "^0.16.8",
         "@types/node": "^24.13.0",
         "@types/react": "^19.2.14",
         "@types/react-dom": "^19.2.3",
@@ -4174,6 +4178,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/katex": {
+      "version": "0.16.8",
+      "resolved": "https://registry.npmjs.org/@types/katex/-/katex-0.16.8.tgz",
+      "integrity": "sha512-trgaNyfU+Xh2Tc+ABIb44a5AYUpicB3uwirOioeOkNPPbmgRNtcWyDeeFRzjPZENO9Vq8gvVqfhaaXWLlevVwg==",
+      "license": "MIT"
+    },
     "node_modules/@types/mdast": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-4.0.4.tgz",
@@ -5821,6 +5831,88 @@
         "node": ">= 0.4"
       }
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+    "node_modules/hast-util-from-dom": {
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+      "resolved": "https://registry.npmjs.org/hast-util-from-dom/-/hast-util-from-dom-5.0.1.tgz",
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+      "license": "ISC",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "hastscript": "^9.0.0",
+        "web-namespaces": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
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+    "node_modules/hast-util-from-html": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/hast-util-from-html/-/hast-util-from-html-2.0.3.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "devlop": "^1.1.0",
+        "hast-util-from-parse5": "^8.0.0",
+        "parse5": "^7.0.0",
+        "vfile": "^6.0.0",
+        "vfile-message": "^4.0.0"
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+        "url": "https://opencollective.com/unified"
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+    "node_modules/hast-util-from-html-isomorphic": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/hast-util-from-html-isomorphic/-/hast-util-from-html-isomorphic-2.0.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "hast-util-from-dom": "^5.0.0",
+        "hast-util-from-html": "^2.0.0",
+        "unist-util-remove-position": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
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+    "node_modules/hast-util-from-parse5": {
+      "version": "8.0.3",
+      "resolved": "https://registry.npmjs.org/hast-util-from-parse5/-/hast-util-from-parse5-8.0.3.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/unist": "^3.0.0",
+        "devlop": "^1.0.0",
+        "hastscript": "^9.0.0",
+        "property-information": "^7.0.0",
+        "vfile": "^6.0.0",
+        "vfile-location": "^5.0.0",
+        "web-namespaces": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/hast-util-is-element": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/hast-util-is-element/-/hast-util-is-element-3.0.0.tgz",
+      "integrity": "sha512-Val9mnv2IWpLbNPqc/pUem+a7Ipj2aHacCwgNfTiK0vJKl0LF+4Ba4+v1oPHFpf3bLYmreq0/l3Gud9S5OH42g==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
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     "node_modules/hast-util-parse-selector": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/hast-util-parse-selector/-/hast-util-parse-selector-4.0.0.tgz",
@@ -5861,6 +5953,22 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/hast-util-to-text": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/hast-util-to-text/-/hast-util-to-text-4.0.2.tgz",
+      "integrity": "sha512-KK6y/BN8lbaq654j7JgBydev7wuNMcID54lkRav1P0CaE1e47P72AWWPiGKXTJU271ooYzcvTAn/Zt0REnvc7A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/unist": "^3.0.0",
+        "hast-util-is-element": "^3.0.0",
+        "unist-util-find-after": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/hast-util-whitespace": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/hast-util-whitespace/-/hast-util-whitespace-3.0.0.tgz",
@@ -6196,6 +6304,31 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/katex": {
+      "version": "0.17.0",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.17.0.tgz",
+      "integrity": "sha512-Vdw0ATsQ9V+LuegM/BTwQqV/6cTl5lbGcIrU+BCgLxyf6bo38ybOr372tuSIxir3CN720flu1meYR6XzNMwQnw==",
+      "funding": [
+        "https://opencollective.com/katex",
+        "https://github.com/sponsors/katex"
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "commander": "^8.3.0"
+      },
+      "bin": {
+        "katex": "cli.js"
+      }
+    },
+    "node_modules/katex/node_modules/commander": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
+      "integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 12"
+      }
+    },
     "node_modules/keyv": {
       "version": "4.5.4",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",
@@ -6773,6 +6906,25 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/mdast-util-math": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/mdast-util-math/-/mdast-util-math-3.0.0.tgz",
+      "integrity": "sha512-Tl9GBNeG/AhJnQM221bJR2HPvLOSnLE/T9cJI9tlc6zwQk2nPk/4f0cHkOdEixQPC/j8UtKDdITswvLAy1OZ1w==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/mdast": "^4.0.0",
+        "devlop": "^1.0.0",
+        "longest-streak": "^3.0.0",
+        "mdast-util-from-markdown": "^2.0.0",
+        "mdast-util-to-markdown": "^2.1.0",
+        "unist-util-remove-position": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/mdast-util-mdx-expression": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/mdast-util-mdx-expression/-/mdast-util-mdx-expression-2.0.1.tgz",
@@ -7112,6 +7264,50 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/micromark-extension-math": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/micromark-extension-math/-/micromark-extension-math-3.1.0.tgz",
+      "integrity": "sha512-lvEqd+fHjATVs+2v/8kg9i5Q0AP2k85H0WUOwpIVvUML8BapsMvh1XAogmQjOCsLpoKRCVQqEkQBB3NhVBcsOg==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/katex": "^0.16.0",
+        "devlop": "^1.0.0",
+        "katex": "^0.16.0",
+        "micromark-factory-space": "^2.0.0",
+        "micromark-util-character": "^2.0.0",
+        "micromark-util-symbol": "^2.0.0",
+        "micromark-util-types": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/micromark-extension-math/node_modules/commander": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
+      "integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 12"
+      }
+    },
+    "node_modules/micromark-extension-math/node_modules/katex": {
+      "version": "0.16.47",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.16.47.tgz",
+      "integrity": "sha512-Eeo8Ys1doU1z+x8AZsPpQu+p/QcZBI5PeOo7QGQdy2x2m0MU/hYagBbGOmXwr5KVbEfVuWv9LpnQWeehogurjg==",
+      "funding": [
+        "https://opencollective.com/katex",
+        "https://github.com/sponsors/katex"
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "commander": "^8.3.0"
+      },
+      "bin": {
+        "katex": "cli.js"
+      }
+    },
     "node_modules/micromark-factory-destination": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/micromark-factory-destination/-/micromark-factory-destination-2.0.1.tgz",
@@ -7801,6 +7997,30 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/parse5": {
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+      "integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+      "license": "MIT",
+      "dependencies": {
+        "entities": "^6.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
+    "node_modules/parse5/node_modules/entities": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+      "integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
     "node_modules/path-exists": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
@@ -8250,6 +8470,50 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/rehype-katex": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/rehype-katex/-/rehype-katex-7.0.1.tgz",
+      "integrity": "sha512-OiM2wrZ/wuhKkigASodFoo8wimG3H12LWQaH8qSPVJn9apWKFSH3YOCtbKpBorTVw/eI7cuT21XBbvwEswbIOA==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/katex": "^0.16.0",
+        "hast-util-from-html-isomorphic": "^2.0.0",
+        "hast-util-to-text": "^4.0.0",
+        "katex": "^0.16.0",
+        "unist-util-visit-parents": "^6.0.0",
+        "vfile": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-katex/node_modules/commander": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
+      "integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 12"
+      }
+    },
+    "node_modules/rehype-katex/node_modules/katex": {
+      "version": "0.16.47",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.16.47.tgz",
+      "integrity": "sha512-Eeo8Ys1doU1z+x8AZsPpQu+p/QcZBI5PeOo7QGQdy2x2m0MU/hYagBbGOmXwr5KVbEfVuWv9LpnQWeehogurjg==",
+      "funding": [
+        "https://opencollective.com/katex",
+        "https://github.com/sponsors/katex"
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "commander": "^8.3.0"
+      },
+      "bin": {
+        "katex": "cli.js"
+      }
+    },
     "node_modules/remark-breaks": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/remark-breaks/-/remark-breaks-4.0.0.tgz",
@@ -8283,6 +8547,22 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/remark-math": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/remark-math/-/remark-math-6.0.0.tgz",
+      "integrity": "sha512-MMqgnP74Igy+S3WwnhQ7kqGlEerTETXMvJhrUzDikVZ2/uogJCb+WHUg97hK9/jcfc0dkD73s3LN8zU49cTEtA==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/mdast": "^4.0.0",
+        "mdast-util-math": "^3.0.0",
+        "micromark-extension-math": "^3.0.0",
+        "unified": "^11.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/remark-parse": {
       "version": "11.0.0",
       "resolved": "https://registry.npmjs.org/remark-parse/-/remark-parse-11.0.0.tgz",
@@ -8772,6 +9052,20 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/unist-util-find-after": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/unist-util-find-after/-/unist-util-find-after-5.0.0.tgz",
+      "integrity": "sha512-amQa0Ep2m6hE2g72AugUItjbuM8X8cGQnFoHk0pGfrFeT9GZhzN5SW8nRsiGKK7Aif4CrACPENkA6P/Lw6fHGQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "unist-util-is": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/unist-util-is": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/unist-util-is/-/unist-util-is-6.0.1.tgz",
@@ -8798,6 +9092,20 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/unist-util-remove-position": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/unist-util-remove-position/-/unist-util-remove-position-5.0.0.tgz",
+      "integrity": "sha512-Hp5Kh3wLxv0PHj9m2yZhhLt58KzPtEYKQQ4yxfYFEO7EvHwzyDYnduhHnY1mDxoqr7VUwVuHXk9RXKIiYS1N8Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "unist-util-visit": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/unist-util-stringify-position": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/unist-util-stringify-position/-/unist-util-stringify-position-4.0.0.tgz",
@@ -8959,6 +9267,20 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/vfile-location": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/vfile-location/-/vfile-location-5.0.3.tgz",
+      "integrity": "sha512-5yXvWDEgqeiYiBe1lbxYF7UMAIm/IcopxMHrMQDq3nvKcjPKIhZklUKL+AE7J7uApI4kwe2snsK+eI6UTj9EHg==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "vfile": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/vfile-message": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/vfile-message/-/vfile-message-4.0.3.tgz",
@@ -9050,6 +9372,16 @@
         }
       }
     },
+    "node_modules/web-namespaces": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/web-namespaces/-/web-namespaces-2.0.1.tgz",
+      "integrity": "sha512-bKr1DkiNa2krS7qxNtdrtHAmzuYGFQLiQ13TsorsdT6ULTkPLKuu5+GsFpDlg6JFjUTwX2DyhMPG2be8uPrqsQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",

package.json

@@ -30,6 +30,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.4.0",
+    "katex": "^0.17.0",
     "lucide-react": "^1.17.0",
     "orval": "^8.15.0",
     "react": "^19.2.6",
@@ -38,8 +39,10 @@
     "react-resizable-panels": "^4.11.2",
     "react-router": "^7.17.0",
     "react-syntax-highlighter": "^16.1.1",
+    "rehype-katex": "^7.0.1",
     "remark-breaks": "^4.0.0",
     "remark-gfm": "^4.0.1",
+    "remark-math": "^6.0.0",
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.6.0",
     "tailwindcss": "^4.3.0",
@@ -47,6 +50,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
+    "@types/katex": "^0.16.8",
     "@types/node": "^24.13.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",

src/index.css

@@ -1,4 +1,5 @@
 @import "tailwindcss";
+@import "katex/dist/katex.min.css";
 @import "@fontsource/jetbrains-mono/400.css";
 @import "@fontsource/jetbrains-mono/500.css";
 @import "@fontsource/inter/400.css";