feat(webui): improve LaTeX rendering with currency detection (#16508)

* webui : Revised LaTeX formula recognition * webui : Further examples containg amounts * webui : vitest for maskInlineLaTeX * webui: Moved preprocessLaTeX to lib/utils * webui: LaTeX in table-cells * chore: update webui build output (use theirs) * webui: backslash in LaTeX-preprocessing * chore: update webui build output * webui: look-behind backslash-check * chore: update webui build output * Apply suggestions from code review Code maintenance (variable names, code formatting, string handling) Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com> * webui: Moved constants to lib/constants. * webui: package woff2 inside base64 data * webui: LaTeX-line-break in display formula * chore: update webui build output * webui: Bugfix (font embedding) * webui: Bugfix (font embedding) * webui: vite embeds assets * webui: don't suppress 404 (fonts) * refactor: KaTeX integration with SCSS Moves KaTeX styling to SCSS for better customization and font embedding. This change includes: - Adding `sass` as a dev dependency. - Introducing a custom SCSS file to override KaTeX variables and disable TTF/WOFF fonts, relying solely on WOFF2 for embedding. - Adjusting the Vite configuration to resolve `katex-fonts` alias and inject SCSS variables. * fix: LaTeX processing within blockquotes * webui: update webui build output --------- Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com>
2025-11-06 09:46:50 +00:00 · 2025-11-03 00:41:08 +01:00
parent a2054e3a8f
commit bcfa87622a
11 changed files with 1132 additions and 16 deletions
--- a/tools/server/public/index.html.gz
+++ b/tools/server/public/index.html.gz
--- a/tools/server/webui/package-lock.json
+++ b/tools/server/webui/package-lock.json
@@ -59,6 +59,7 @@
 				"prettier-plugin-tailwindcss": "^0.6.11",
 				"rehype-katex": "^7.0.1",
 				"remark-math": "^6.0.0",
+				"sass": "^1.93.3",
 				"storybook": "^9.0.17",
 				"svelte": "^5.0.0",
 				"svelte-check": "^4.0.0",
@@ -1176,6 +1177,330 @@
 				"node": ">= 8"
 			}
 		},
+		"node_modules/@parcel/watcher": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher/-/watcher-2.5.1.tgz",
+			"integrity": "sha512-dfUnCxiN9H4ap84DvD2ubjw+3vUNpstxa0TneY/Paat8a3R4uQZDLSvWjmznAY/DoahqTHl9V46HF/Zs3F29pg==",
+			"dev": true,
+			"hasInstallScript": true,
+			"license": "MIT",
+			"optional": true,
+			"dependencies": {
+				"detect-libc": "^1.0.3",
+				"is-glob": "^4.0.3",
+				"micromatch": "^4.0.5",
+				"node-addon-api": "^7.0.0"
+			},
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			},
+			"optionalDependencies": {
+				"@parcel/watcher-android-arm64": "2.5.1",
+				"@parcel/watcher-darwin-arm64": "2.5.1",
+				"@parcel/watcher-darwin-x64": "2.5.1",
+				"@parcel/watcher-freebsd-x64": "2.5.1",
+				"@parcel/watcher-linux-arm-glibc": "2.5.1",
+				"@parcel/watcher-linux-arm-musl": "2.5.1",
+				"@parcel/watcher-linux-arm64-glibc": "2.5.1",
+				"@parcel/watcher-linux-arm64-musl": "2.5.1",
+				"@parcel/watcher-linux-x64-glibc": "2.5.1",
+				"@parcel/watcher-linux-x64-musl": "2.5.1",
+				"@parcel/watcher-win32-arm64": "2.5.1",
+				"@parcel/watcher-win32-ia32": "2.5.1",
+				"@parcel/watcher-win32-x64": "2.5.1"
+			}
+		},
+		"node_modules/@parcel/watcher-android-arm64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-android-arm64/-/watcher-android-arm64-2.5.1.tgz",
+			"integrity": "sha512-KF8+j9nNbUN8vzOFDpRMsaKBHZ/mcjEjMToVMJOhTozkDonQFFrRcfdLWn6yWKCmJKmdVxSgHiYvTCef4/qcBA==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"android"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-darwin-arm64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-darwin-arm64/-/watcher-darwin-arm64-2.5.1.tgz",
+			"integrity": "sha512-eAzPv5osDmZyBhou8PoF4i6RQXAfeKL9tjb3QzYuccXFMQU0ruIc/POh30ePnaOyD1UXdlKguHBmsTs53tVoPw==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"darwin"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-darwin-x64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-darwin-x64/-/watcher-darwin-x64-2.5.1.tgz",
+			"integrity": "sha512-1ZXDthrnNmwv10A0/3AJNZ9JGlzrF82i3gNQcWOzd7nJ8aj+ILyW1MTxVk35Db0u91oD5Nlk9MBiujMlwmeXZg==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"darwin"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-freebsd-x64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-freebsd-x64/-/watcher-freebsd-x64-2.5.1.tgz",
+			"integrity": "sha512-SI4eljM7Flp9yPuKi8W0ird8TI/JK6CSxju3NojVI6BjHsTyK7zxA9urjVjEKJ5MBYC+bLmMcbAWlZ+rFkLpJQ==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"freebsd"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-arm-glibc": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm-glibc/-/watcher-linux-arm-glibc-2.5.1.tgz",
+			"integrity": "sha512-RCdZlEyTs8geyBkkcnPWvtXLY44BCeZKmGYRtSgtwwnHR4dxfHRG3gR99XdMEdQ7KeiDdasJwwvNSF5jKtDwdA==",
+			"cpu": [
+				"arm"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-arm-musl": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm-musl/-/watcher-linux-arm-musl-2.5.1.tgz",
+			"integrity": "sha512-6E+m/Mm1t1yhB8X412stiKFG3XykmgdIOqhjWj+VL8oHkKABfu/gjFj8DvLrYVHSBNC+/u5PeNrujiSQ1zwd1Q==",
+			"cpu": [
+				"arm"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-arm64-glibc": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm64-glibc/-/watcher-linux-arm64-glibc-2.5.1.tgz",
+			"integrity": "sha512-LrGp+f02yU3BN9A+DGuY3v3bmnFUggAITBGriZHUREfNEzZh/GO06FF5u2kx8x+GBEUYfyTGamol4j3m9ANe8w==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-arm64-musl": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm64-musl/-/watcher-linux-arm64-musl-2.5.1.tgz",
+			"integrity": "sha512-cFOjABi92pMYRXS7AcQv9/M1YuKRw8SZniCDw0ssQb/noPkRzA+HBDkwmyOJYp5wXcsTrhxO0zq1U11cK9jsFg==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-x64-glibc": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-x64-glibc/-/watcher-linux-x64-glibc-2.5.1.tgz",
+			"integrity": "sha512-GcESn8NZySmfwlTsIur+49yDqSny2IhPeZfXunQi48DMugKeZ7uy1FX83pO0X22sHntJ4Ub+9k34XQCX+oHt2A==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-linux-x64-musl": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-linux-x64-musl/-/watcher-linux-x64-musl-2.5.1.tgz",
+			"integrity": "sha512-n0E2EQbatQ3bXhcH2D1XIAANAcTZkQICBPVaxMeaCVBtOpBZpWJuf7LwyWPSBDITb7In8mqQgJ7gH8CILCURXg==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-win32-arm64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-win32-arm64/-/watcher-win32-arm64-2.5.1.tgz",
+			"integrity": "sha512-RFzklRvmc3PkjKjry3hLF9wD7ppR4AKcWNzH7kXR7GUe0Igb3Nz8fyPwtZCSquGrhU5HhUNDr/mKBqj7tqA2Vw==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-win32-ia32": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-win32-ia32/-/watcher-win32-ia32-2.5.1.tgz",
+			"integrity": "sha512-c2KkcVN+NJmuA7CGlaGD1qJh1cLfDnQsHjE89E60vUEMlqduHGCdCLJCID5geFVM0dOtA3ZiIO8BoEQmzQVfpQ==",
+			"cpu": [
+				"ia32"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher-win32-x64": {
+			"version": "2.5.1",
+			"resolved": "https://registry.npmjs.org/@parcel/watcher-win32-x64/-/watcher-win32-x64-2.5.1.tgz",
+			"integrity": "sha512-9lHBdJITeNR++EvSQVUcaZoWupyHfXe1jZvGZ06O/5MflPcuPLtEphScIBL+AiCWBO46tDSHzWyD0uDmmZqsgA==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">= 10.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/parcel"
+			}
+		},
+		"node_modules/@parcel/watcher/node_modules/detect-libc": {
+			"version": "1.0.3",
+			"resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+			"integrity": "sha512-pGjwhsmsp4kL2RTz08wcOlGN83otlqHeD/Z5T8GXZB+/YcpQ/dgo+lbU8ZsGxV0HIvqqxo9l7mqYwyYMD9bKDg==",
+			"dev": true,
+			"license": "Apache-2.0",
+			"optional": true,
+			"bin": {
+				"detect-libc": "bin/detect-libc.js"
+			},
+			"engines": {
+				"node": ">=0.10"
+			}
+		},
 		"node_modules/@playwright/test": {
 			"version": "1.54.1",
 			"resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.54.1.tgz",
@@ -4697,6 +5022,13 @@
 				"node": ">= 4"
 			}
 		},
+		"node_modules/immutable": {
+			"version": "5.1.4",
+			"resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.4.tgz",
+			"integrity": "sha512-p6u1bG3YSnINT5RQmx/yRZBpenIl30kVxkTLDyHLIMk0gict704Q9n+thfDI7lTRm9vXdDYutVzXhzcThxTnXA==",
+			"dev": true,
+			"license": "MIT"
+		},
 		"node_modules/import-fresh": {
 			"version": "3.3.1",
 			"resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.1.tgz",
@@ -6462,6 +6794,14 @@
 				"tslib": "^2.0.3"
 			}
 		},
+		"node_modules/node-addon-api": {
+			"version": "7.1.1",
+			"resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-7.1.1.tgz",
+			"integrity": "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ==",
+			"dev": true,
+			"license": "MIT",
+			"optional": true
+		},
 		"node_modules/object-inspect": {
 			"version": "1.13.4",
 			"resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.4.tgz",
@@ -7484,6 +7824,27 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/sass": {
+			"version": "1.93.3",
+			"resolved": "https://registry.npmjs.org/sass/-/sass-1.93.3.tgz",
+			"integrity": "sha512-elOcIZRTM76dvxNAjqYrucTSI0teAF/L2Lv0s6f6b7FOwcwIuA357bIE871580AjHJuSvLIRUosgV+lIWx6Rgg==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"chokidar": "^4.0.0",
+				"immutable": "^5.0.2",
+				"source-map-js": ">=0.6.2 <2.0.0"
+			},
+			"bin": {
+				"sass": "sass.js"
+			},
+			"engines": {
+				"node": ">=14.0.0"
+			},
+			"optionalDependencies": {
+				"@parcel/watcher": "^2.4.1"
+			}
+		},
 		"node_modules/scheduler": {
 			"version": "0.26.0",
 			"resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.26.0.tgz",
--- a/tools/server/webui/package.json
+++ b/tools/server/webui/package.json
@@ -61,6 +61,7 @@
 		"prettier-plugin-tailwindcss": "^0.6.11",
 		"rehype-katex": "^7.0.1",
 		"remark-math": "^6.0.0",
+		"sass": "^1.93.3",
 		"storybook": "^9.0.17",
 		"svelte": "^5.0.0",
 		"svelte-check": "^4.0.0",
--- a/tools/server/webui/src/lib/components/app/misc/MarkdownContent.svelte
+++ b/tools/server/webui/src/lib/components/app/misc/MarkdownContent.svelte
@@ -8,8 +8,9 @@
 	import rehypeKatex from 'rehype-katex';
 	import rehypeStringify from 'rehype-stringify';
 	import { copyCodeToClipboard } from '$lib/utils/copy';
+	import { preprocessLaTeX } from '$lib/utils/latex-protection';
 	import { browser } from '$app/environment';
-	import 'katex/dist/katex.min.css';
+	import '$styles/katex-custom.scss';

 	import githubDarkCss from 'highlight.js/styles/github-dark.css?inline';
 	import githubLightCss from 'highlight.js/styles/github.css?inline';
@@ -176,19 +177,9 @@
 		return mutated ? tempDiv.innerHTML : html;
 	}

-	function normalizeMathDelimiters(text: string): string {
-		return text
-			.replace(/(^|[^\\])\\\[((?:\\.|[\s\S])*?)\\\]/g, (_, prefix: string, content: string) => {
-				return `${prefix}$$${content}$$`;
-			})
-			.replace(/(^|[^\\])\\\(((?:\\.|[\s\S])*?)\\\)/g, (_, prefix: string, content: string) => {
-				return `${prefix}$${content}$`;
-			});
-	}
-
 	async function processMarkdown(text: string): Promise<string> {
 		try {
-			const normalized = normalizeMathDelimiters(text);
+			let normalized = preprocessLaTeX(text);
 			const result = await processor().process(normalized);
 			const html = String(result);
 			const enhancedLinks = enhanceLinks(html);
--- a/tools/server/webui/src/lib/constants/latex-protection.ts
+++ b/tools/server/webui/src/lib/constants/latex-protection.ts
@@ -0,0 +1,35 @@
+/**
+ * Matches common Markdown code blocks to exclude them from further processing (e.g. LaTeX).
+ * - Fenced: ```...```
+ * - Inline: `...` (does NOT support nested backticks or multi-backtick syntax)
+ *
+ * Note: This pattern does not handle advanced cases like:
+ *       `` `code with `backticks` `` or \\``...\\``
+ */
+export const CODE_BLOCK_REGEXP = /(```[\s\S]*?```|`[^`\n]+`)/g;
+
+/**
+ * Matches LaTeX math delimiters \(...\) and \[...\] only when not preceded by a backslash (i.e., not escaped),
+ * while also capturing code blocks (```, `...`) so they can be skipped during processing.
+ *
+ * Uses negative lookbehind `(?<!\\)` to avoid matching \\( or \\[.
+ * Using the look‑behind pattern `(?<!\\)` we skip matches
+ * that are preceded by a backslash, e.g.
+ * `Definitions\\(also called macros)` (title of chapter 20 in The TeXbook)
+ * or `\\[4pt]` (LaTeX line-break).
+ *
+ * group 1: code-block
+ * group 2: square-bracket
+ * group 3: round-bracket
+ */
+export const LATEX_MATH_AND_CODE_PATTERN =
+	/(```[\S\s]*?```|`.*?`)|(?<!\\)\\\[([\S\s]*?[^\\])\\]|(?<!\\)\\\((.*?)\\\)/g;
+
+/** Regex to capture the content of a $$...\\\\...$$ block (display-formula with line-break) */
+export const LATEX_LINEBREAK_REGEXP = /\$\$([\s\S]*?\\\\[\s\S]*?)\$\$/;
+
+/** map from mchem-regexp to replacement */
+export const MHCHEM_PATTERN_MAP: readonly [RegExp, string][] = [
+	[/(\s)\$\\ce{/g, '$1$\\\\ce{'],
+	[/(\s)\$\\pu{/g, '$1$\\\\pu{']
+] as const;
--- a/tools/server/webui/src/lib/utils/latex-protection.test.ts
+++ b/tools/server/webui/src/lib/utils/latex-protection.test.ts
@@ -0,0 +1,355 @@
+/* eslint-disable no-irregular-whitespace */
+import { describe, it, expect, test } from 'vitest';
+import { maskInlineLaTeX, preprocessLaTeX } from './latex-protection';
+
+describe('maskInlineLaTeX', () => {
+	it('should protect LaTeX $x + y$ but not money $3.99', () => {
+		const latexExpressions: string[] = [];
+		const input = 'I have $10, $3.99 and $x + y$ and $100x$. The amount is $2,000.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('I have $10, $3.99 and <<LATEX_0>> and <<LATEX_1>>. The amount is $2,000.');
+		expect(latexExpressions).toEqual(['$x + y$', '$100x$']);
+	});
+
+	it('should ignore money like $5 and $12.99', () => {
+		const latexExpressions: string[] = [];
+		const input = 'Prices are $12.99 and $5. Tax?';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('Prices are $12.99 and $5. Tax?');
+		expect(latexExpressions).toEqual([]);
+	});
+
+	it('should protect inline math $a^2 + b^2$ even after text', () => {
+		const latexExpressions: string[] = [];
+		const input = 'Pythagorean: $a^2 + b^2 = c^2$.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('Pythagorean: <<LATEX_0>>.');
+		expect(latexExpressions).toEqual(['$a^2 + b^2 = c^2$']);
+	});
+
+	it('should not protect math that has letter after closing $ (e.g. units)', () => {
+		const latexExpressions: string[] = [];
+		const input = 'The cost is $99 and change.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('The cost is $99 and change.');
+		expect(latexExpressions).toEqual([]);
+	});
+
+	it('should allow $x$ followed by punctuation', () => {
+		const latexExpressions: string[] = [];
+		const input = 'We know $x$, right?';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('We know <<LATEX_0>>, right?');
+		expect(latexExpressions).toEqual(['$x$']);
+	});
+
+	it('should work across multiple lines', () => {
+		const latexExpressions: string[] = [];
+		const input = `Emma buys cupcakes for $3 each.\nHow much is $x + y$?`;
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe(`Emma buys cupcakes for $3 each.\nHow much is <<LATEX_0>>?`);
+		expect(latexExpressions).toEqual(['$x + y$']);
+	});
+
+	it('should not protect $100 but protect $matrix$', () => {
+		const latexExpressions: string[] = [];
+		const input = '$100 and $\\mathrm{GL}_2(\\mathbb{F}_7)$ are different.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('$100 and <<LATEX_0>> are different.');
+		expect(latexExpressions).toEqual(['$\\mathrm{GL}_2(\\mathbb{F}_7)$']);
+	});
+
+	it('should skip if $ is followed by digit and alphanumeric after close (money)', () => {
+		const latexExpressions: string[] = [];
+		const input = 'I paid $5 quickly.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('I paid $5 quickly.');
+		expect(latexExpressions).toEqual([]);
+	});
+
+	it('should protect LaTeX even with special chars inside', () => {
+		const latexExpressions: string[] = [];
+		const input = 'Consider $\\alpha_1 + \\beta_2$ now.';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('Consider <<LATEX_0>> now.');
+		expect(latexExpressions).toEqual(['$\\alpha_1 + \\beta_2$']);
+	});
+
+	it('short text', () => {
+		const latexExpressions: string[] = ['$0$'];
+		const input = '$a$\n$a$ and $b$';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('<<LATEX_1>>\n<<LATEX_2>> and <<LATEX_3>>');
+		expect(latexExpressions).toEqual(['$0$', '$a$', '$a$', '$b$']);
+	});
+
+	it('empty text', () => {
+		const latexExpressions: string[] = [];
+		const input = '$\n$$\n';
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe('$\n$$\n');
+		expect(latexExpressions).toEqual([]);
+	});
+
+	it('LaTeX-spacer preceded by backslash', () => {
+		const latexExpressions: string[] = [];
+		const input = `\\[
+\\boxed{
+\\begin{aligned}
+N_{\\text{att}}^{\\text{(MHA)}} &=
+h \\bigl[\\, d_{\\text{model}}\\;d_{k} + d_{\\text{model}}\\;d_{v}\\, \\bigr]   && (\\text{Q,K,V の重み})\\\\
+&\\quad+ h(d_{k}+d_{k}+d_{v})                                          && (\\text{バイアス Q,K,V）}\\\\[4pt]
+&\\quad+ (h d_{v})\\, d_{\\text{model}}                                 && (\\text{出力射影 }W^{O})\\\\
+&\\quad+ d_{\\text{model}}                                            && (\\text{バイアス }b^{O})
+\\end{aligned}}
+\\]`;
+		const output = maskInlineLaTeX(input, latexExpressions);
+
+		expect(output).toBe(input);
+		expect(latexExpressions).toEqual([]);
+	});
+});
+
+describe('preprocessLaTeX', () => {
+	test('converts inline \\( ... \\) to $...$', () => {
+		const input =
+			'\\( \\mathrm{GL}_2(\\mathbb{F}_7) \\): Group of invertible matrices with entries in \\(\\mathbb{F}_7\\).';
+		const output = preprocessLaTeX(input);
+		expect(output).toBe(
+			'$ \\mathrm{GL}_2(\\mathbb{F}_7) $: Group of invertible matrices with entries in $\\mathbb{F}_7$.'
+		);
+	});
+
+	test("don't inline \\\\( ... \\) to $...$", () => {
+		const input =
+			'Chapter 20 of The TeXbook, in source "Definitions\\\\(also called Macros)", containst the formula \\((x_1,\\ldots,x_n)\\).';
+		const output = preprocessLaTeX(input);
+		expect(output).toBe(
+			'Chapter 20 of The TeXbook, in source "Definitions\\\\(also called Macros)", containst the formula $(x_1,\\ldots,x_n)$.'
+		);
+	});
+
+	test('preserves display math \\[ ... \\] and protects adjacent text', () => {
+		const input = `Some kernel of \\(\\mathrm{SL}_2(\\mathbb{F}_7)\\):
+  \\[
+  \\left\\{ \\begin{pmatrix} 1 & 0 \\\\ 0 & 1 \\end{pmatrix}, \\begin{pmatrix} -1 & 0 \\\\ 0 & -1 \\end{pmatrix} \\right\\} = \\{\\pm I\\}
+  \\]`;
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(`Some kernel of $\\mathrm{SL}_2(\\mathbb{F}_7)$:
+  $$
+  \\left\\{ \\begin{pmatrix} 1 & 0 \\\\ 0 & 1 \\end{pmatrix}, \\begin{pmatrix} -1 & 0 \\\\ 0 & -1 \\end{pmatrix} \\right\\} = \\{\\pm I\\}
+  $$`);
+	});
+
+	test('handles standalone display math equation', () => {
+		const input = `Algebra:
+\\[
+x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}
+\\]`;
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(`Algebra:
+$$
+x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}
+$$`);
+	});
+
+	test('does not interpret currency values as LaTeX', () => {
+		const input = 'I have $10, $3.99 and $x + y$ and $100x$. The amount is $2,000.';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe('I have \\$10, \\$3.99 and $x + y$ and $100x$. The amount is \\$2,000.');
+	});
+
+	test('ignores dollar signs followed by digits (money), but keeps valid math $x + y$', () => {
+		const input = 'I have $10, $3.99 and $x + y$ and $100x$. The amount is $2,000.';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe('I have \\$10, \\$3.99 and $x + y$ and $100x$. The amount is \\$2,000.');
+	});
+
+	test('handles real-world word problems with amounts and no math delimiters', () => {
+		const input =
+			'Emma buys 2 cupcakes for $3 each and 1 cookie for $1.50. How much money does she spend in total?';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(
+			'Emma buys 2 cupcakes for \\$3 each and 1 cookie for \\$1.50. How much money does she spend in total?'
+		);
+	});
+
+	test('handles decimal amounts in word problem correctly', () => {
+		const input =
+			'Maria has $20. She buys a notebook for $4.75 and a pack of pencils for $3.25. How much change does she receive?';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(
+			'Maria has \\$20. She buys a notebook for \\$4.75 and a pack of pencils for \\$3.25. How much change does she receive?'
+		);
+	});
+
+	test('preserves display math with surrounding non-ASCII text', () => {
+		const input = `1 kg の質量は
+  \\[
+  E = (1\\ \\text{kg}) \\times (3.0 \\times 10^8\\ \\text{m/s})^2 \\approx 9.0 \\times 10^{16}\\ \\text{J}
+  \\]
+  というエネルギーに相当します。これは約 21 百万トンの TNT が爆発したときのエネルギーに匹敵します。`;
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(
+			`1 kg の質量は
+  $$
+  E = (1\\ \\text{kg}) \\times (3.0 \\times 10^8\\ \\text{m/s})^2 \\approx 9.0 \\times 10^{16}\\ \\text{J}
+  $$
+  というエネルギーに相当します。これは約 21 百万トンの TNT が爆発したときのエネルギーに匹敵します。`
+		);
+	});
+
+	test('LaTeX-spacer preceded by backslash', () => {
+		const input = `\\[
+\\boxed{
+\\begin{aligned}
+N_{\\text{att}}^{\\text{(MHA)}} &=
+h \\bigl[\\, d_{\\text{model}}\\;d_{k} + d_{\\text{model}}\\;d_{v}\\, \\bigr]   && (\\text{Q,K,V の重み})\\\\
+&\\quad+ h(d_{k}+d_{k}+d_{v})                                          && (\\text{バイアス Q,K,V）}\\\\[4pt]
+&\\quad+ (h d_{v})\\, d_{\\text{model}}                                 && (\\text{出力射影 }W^{O})\\\\
+&\\quad+ d_{\\text{model}}                                            && (\\text{バイアス }b^{O})
+\\end{aligned}}
+\\]`;
+		const output = preprocessLaTeX(input);
+		expect(output).toBe(
+			`$$
+\\boxed{
+\\begin{aligned}
+N_{\\text{att}}^{\\text{(MHA)}} &=
+h \\bigl[\\, d_{\\text{model}}\\;d_{k} + d_{\\text{model}}\\;d_{v}\\, \\bigr]   && (\\text{Q,K,V の重み})\\\\
+&\\quad+ h(d_{k}+d_{k}+d_{v})                                          && (\\text{バイアス Q,K,V）}\\\\[4pt]
+&\\quad+ (h d_{v})\\, d_{\\text{model}}                                 && (\\text{出力射影 }W^{O})\\\\
+&\\quad+ d_{\\text{model}}                                            && (\\text{バイアス }b^{O})
+\\end{aligned}}
+$$`
+		);
+	});
+
+	test('converts \\[ ... \\] even when preceded by text without space', () => {
+		const input = 'Some line ...\nAlgebra: \\[x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}\\]';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(
+			'Some line ...\nAlgebra: \n$$x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}$$\n'
+		);
+	});
+
+	test('converts \\[ ... \\] in table-cells', () => {
+		const input = `| ID | Expression |\n| #1 | \\[
+			x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}
+\\] |`;
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(
+			'| ID | Expression |\n| #1 | $x = \\frac{-b \\pm \\sqrt{\\,b^{2}-4ac\\,}}{2a}$ |'
+		);
+	});
+
+	test('escapes isolated $ before digits ($5 → \\$5), but not valid math', () => {
+		const input = 'This costs $5 and this is math $x^2$. $100 is money.';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe('This costs \\$5 and this is math $x^2$. \\$100 is money.');
+		// Note: Since $x^2$ is detected as valid LaTeX, it's preserved.
+		// $5 becomes \$5 only *after* real math is masked — but here it's correct because the masking logic avoids treating $5 as math.
+	});
+
+	test('display with LaTeX-line-breaks', () => {
+		const input = String.raw`- Algebraic topology, Homotopy Groups of $\mathbb{S}^3$:
+$$\pi_n(\mathbb{S}^3) = \begin{cases}
+\mathbb{Z} & n = 3 \\
+0 & n > 3, n \neq 4 \\
+\mathbb{Z}_2 & n = 4 \\
+\end{cases}$$`;
+		const output = preprocessLaTeX(input);
+		// If the formula contains '\\' the $$-delimiters should be in their own line.
+		expect(output).toBe(`- Algebraic topology, Homotopy Groups of $\\mathbb{S}^3$:
+$$\n\\pi_n(\\mathbb{S}^3) = \\begin{cases}
+\\mathbb{Z} & n = 3 \\\\
+0 & n > 3, n \\neq 4 \\\\
+\\mathbb{Z}_2 & n = 4 \\\\
+\\end{cases}\n$$`);
+	});
+
+	test('handles mhchem notation safely if present', () => {
+		const input = 'Chemical reaction: \\( \\ce{H2O} \\) and $\\ce{CO2}$';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe('Chemical reaction: $ \\ce{H2O} $ and $\\ce{CO2}$');
+	});
+
+	test('preserves code blocks', () => {
+		const input = 'Inline code: `sum $total` and block:\n```\ndollar $amount\n```\nEnd.';
+		const output = preprocessLaTeX(input);
+
+		expect(output).toBe(input); // Code blocks prevent misinterpretation
+	});
+
+	test('escape backslash in mchem ce', () => {
+		const input = 'mchem ce:\n$\\ce{2H2(g) + O2(g) -> 2H2O(l)}$';
+		const output = preprocessLaTeX(input);
+
+		// mhchem-escape would insert a backslash here.
+		expect(output).toBe('mchem ce:\n$\\ce{2H2(g) + O2(g) -> 2H2O(l)}$');
+	});
+
+	test('escape backslash in mchem pu', () => {
+		const input = 'mchem pu:\n$\\pu{-572 kJ mol^{-1}}$';
+		const output = preprocessLaTeX(input);
+
+		// mhchem-escape would insert a backslash here.
+		expect(output).toBe('mchem pu:\n$\\pu{-572 kJ mol^{-1}}$');
+	});
+
+	test('LaTeX in blockquotes with display math', () => {
+		const input =
+			'> **Definition (limit):**  \n>  \\[\n>  \\lim_{x\\to a} f(x) = L\n>  \\]\n>  means that as \\(x\\) gets close to \\(a\\).';
+		const output = preprocessLaTeX(input);
+
+		// Blockquote markers should be preserved, LaTeX should be converted
+		expect(output).toContain('> **Definition (limit):**');
+		expect(output).toContain('$$');
+		expect(output).toContain('$x$');
+		expect(output).not.toContain('\\[');
+		expect(output).not.toContain('\\]');
+		expect(output).not.toContain('\\(');
+		expect(output).not.toContain('\\)');
+	});
+
+	test('LaTeX in blockquotes with inline math', () => {
+		const input =
+			"> The derivative \\(f'(x)\\) at point \\(x=a\\) measures slope.\n> Formula: \\(f'(a)=\\lim_{h\\to 0}\\frac{f(a+h)-f(a)}{h}\\)";
+		const output = preprocessLaTeX(input);
+
+		// Blockquote markers should be preserved, inline LaTeX converted to $...$
+		expect(output).toContain("> The derivative $f'(x)$ at point $x=a$ measures slope.");
+		expect(output).toContain("> Formula: $f'(a)=\\lim_{h\\to 0}\\frac{f(a+h)-f(a)}{h}$");
+	});
+
+	test('Mixed content with blockquotes and regular text', () => {
+		const input =
+			'Regular text with \\(x^2\\).\n\n> Quote with \\(y^2\\).\n\nMore text with \\(z^2\\).';
+		const output = preprocessLaTeX(input);
+
+		// All LaTeX should be converted, blockquote markers preserved
+		expect(output).toBe('Regular text with $x^2$.\n\n> Quote with $y^2$.\n\nMore text with $z^2$.');
+	});
+});
--- a/tools/server/webui/src/lib/utils/latex-protection.ts
+++ b/tools/server/webui/src/lib/utils/latex-protection.ts
@@ -0,0 +1,267 @@
+import {
+	CODE_BLOCK_REGEXP,
+	LATEX_MATH_AND_CODE_PATTERN,
+	LATEX_LINEBREAK_REGEXP,
+	MHCHEM_PATTERN_MAP
+} from '$lib/constants/latex-protection';
+
+/**
+ * Replaces inline LaTeX expressions enclosed in `$...$` with placeholders, avoiding dollar signs
+ * that appear to be part of monetary values or identifiers.
+ *
+ * This function processes the input line by line and skips `$` sequences that are likely
+ * part of money amounts (e.g., `$5`, `$100.99`) or code-like tokens (e.g., `var$`, `$var`).
+ * Valid LaTeX inline math is replaced with a placeholder like `<<LATEX_0>>`, and the
+ * actual LaTeX content is stored in the provided `latexExpressions` array.
+ *
+ * @param content - The input text potentially containing LaTeX expressions.
+ * @param latexExpressions - An array used to collect extracted LaTeX expressions.
+ * @returns The processed string with LaTeX replaced by placeholders.
+ */
+export function maskInlineLaTeX(content: string, latexExpressions: string[]): string {
+	if (!content.includes('$')) {
+		return content;
+	}
+	return content
+		.split('\n')
+		.map((line) => {
+			if (line.indexOf('$') == -1) {
+				return line;
+			}
+
+			let processedLine = '';
+			let currentPosition = 0;
+
+			while (currentPosition < line.length) {
+				const openDollarIndex = line.indexOf('$', currentPosition);
+
+				if (openDollarIndex == -1) {
+					processedLine += line.slice(currentPosition);
+					break;
+				}
+
+				// Is there a next $-sign?
+				const closeDollarIndex = line.indexOf('$', openDollarIndex + 1);
+
+				if (closeDollarIndex == -1) {
+					processedLine += line.slice(currentPosition);
+					break;
+				}
+
+				const charBeforeOpen = openDollarIndex > 0 ? line[openDollarIndex - 1] : '';
+				const charAfterOpen = line[openDollarIndex + 1];
+				const charBeforeClose =
+					openDollarIndex + 1 < closeDollarIndex ? line[closeDollarIndex - 1] : '';
+				const charAfterClose = closeDollarIndex + 1 < line.length ? line[closeDollarIndex + 1] : '';
+
+				let shouldSkipAsNonLatex = false;
+
+				if (closeDollarIndex == currentPosition + 1) {
+					// No content
+					shouldSkipAsNonLatex = true;
+				}
+
+				if (/[A-Za-z0-9_$-]/.test(charBeforeOpen)) {
+					// Character, digit, $, _ or - before first '$', no TeX.
+					shouldSkipAsNonLatex = true;
+				}
+
+				if (
+					/[0-9]/.test(charAfterOpen) &&
+					(/[A-Za-z0-9_$-]/.test(charAfterClose) || ' ' == charBeforeClose)
+				) {
+					// First $ seems to belong to an amount.
+					shouldSkipAsNonLatex = true;
+				}
+
+				if (shouldSkipAsNonLatex) {
+					processedLine += line.slice(currentPosition, openDollarIndex + 1);
+					currentPosition = openDollarIndex + 1;
+
+					continue;
+				}
+
+				// Treat as LaTeX
+				processedLine += line.slice(currentPosition, openDollarIndex);
+				const latexContent = line.slice(openDollarIndex, closeDollarIndex + 1);
+				latexExpressions.push(latexContent);
+				processedLine += `<<LATEX_${latexExpressions.length - 1}>>`;
+				currentPosition = closeDollarIndex + 1;
+			}
+
+			return processedLine;
+		})
+		.join('\n');
+}
+
+function escapeBrackets(text: string): string {
+	return text.replace(
+		LATEX_MATH_AND_CODE_PATTERN,
+		(
+			match: string,
+			codeBlock: string | undefined,
+			squareBracket: string | undefined,
+			roundBracket: string | undefined
+		): string => {
+			if (codeBlock != null) {
+				return codeBlock;
+			} else if (squareBracket != null) {
+				return `$$${squareBracket}$$`;
+			} else if (roundBracket != null) {
+				return `$${roundBracket}$`;
+			}
+
+			return match;
+		}
+	);
+}
+
+// Escape $\\ce{...} → $\\ce{...} but with proper handling
+function escapeMhchem(text: string): string {
+	return MHCHEM_PATTERN_MAP.reduce((result, [pattern, replacement]) => {
+		return result.replace(pattern, replacement);
+	}, text);
+}
+
+const doEscapeMhchem = false;
+
+/**
+ * Preprocesses markdown content to safely handle LaTeX math expressions while protecting
+ * against false positives (e.g., dollar amounts like $5.99) and ensuring proper rendering.
+ *
+ * This function:
+ * - Protects code blocks (```) and inline code (`...`)
+ * - Safeguards block and inline LaTeX: \(...\), \[...\], $$...$$, and selective $...$
+ * - Escapes standalone dollar signs before numbers (e.g., $5 → \$5) to prevent misinterpretation
+ * - Restores protected LaTeX and code blocks after processing
+ * - Converts \(...\) → $...$ and \[...\] → $$...$$ for compatibility with math renderers
+ * - Applies additional escaping for brackets and mhchem syntax if needed
+ *
+ * @param content - The raw text (e.g., markdown) that may contain LaTeX or code blocks.
+ * @returns The preprocessed string with properly escaped and normalized LaTeX.
+ *
+ * @example
+ * preprocessLaTeX("Price: $10. The equation is \\(x^2\\).")
+ * // → "Price: $10. The equation is $x^2$."
+ */
+export function preprocessLaTeX(content: string): string {
+	// See also:
+	// https://github.com/danny-avila/LibreChat/blob/main/client/src/utils/latex.ts
+
+	// Step 0: Temporarily remove blockquote markers (>) to process LaTeX correctly
+	// Store the structure so we can restore it later
+	const blockquoteMarkers: Map<number, string> = new Map();
+	const lines = content.split('\n');
+	const processedLines = lines.map((line, index) => {
+		const match = line.match(/^(>\s*)/);
+		if (match) {
+			blockquoteMarkers.set(index, match[1]);
+			return line.slice(match[1].length);
+		}
+		return line;
+	});
+	content = processedLines.join('\n');
+
+	// Step 1: Protect code blocks
+	const codeBlocks: string[] = [];
+
+	content = content.replace(CODE_BLOCK_REGEXP, (match) => {
+		codeBlocks.push(match);
+
+		return `<<CODE_BLOCK_${codeBlocks.length - 1}>>`;
+	});
+
+	// Step 2: Protect existing LaTeX expressions
+	const latexExpressions: string[] = [];
+
+	// Match \S...\[...\] and protect them and insert a line-break.
+	content = content.replace(/([\S].*?)\\\[([\s\S]*?)\\\](.*)/g, (match, group1, group2, group3) => {
+		// Check if there are characters following the formula (display-formula in a table-cell?)
+		if (group1.endsWith('\\')) {
+			return match; // Backslash before \[, do nothing.
+		}
+		const hasSuffix = /\S/.test(group3);
+		let optBreak;
+
+		if (hasSuffix) {
+			latexExpressions.push(`\\(${group2.trim()}\\)`); // Convert into inline.
+			optBreak = '';
+		} else {
+			latexExpressions.push(`\\[${group2}\\]`);
+			optBreak = '\n';
+		}
+
+		return `${group1}${optBreak}<<LATEX_${latexExpressions.length - 1}>>${optBreak}${group3}`;
+	});
+
+	// Match \(...\), \[...\], $$...$$ and protect them
+	content = content.replace(
+		/(\$\$[\s\S]*?\$\$|(?<!\\)\\\[[\s\S]*?\\\]|(?<!\\)\\\(.*?\\\))/g,
+		(match) => {
+			latexExpressions.push(match);
+
+			return `<<LATEX_${latexExpressions.length - 1}>>`;
+		}
+	);
+
+	// Protect inline $...$ but NOT if it looks like money (e.g., $10, $3.99)
+	content = maskInlineLaTeX(content, latexExpressions);
+
+	// Step 3: Escape standalone $ before digits (currency like $5 → \$5)
+	// (Now that inline math is protected, this will only escape dollars not already protected)
+	content = content.replace(/\$(?=\d)/g, '\\$');
+
+	// Step 4: Restore protected LaTeX expressions (they are valid)
+	content = content.replace(/<<LATEX_(\d+)>>/g, (_, index) => {
+		let expr = latexExpressions[parseInt(index)];
+		const match = expr.match(LATEX_LINEBREAK_REGEXP);
+		if (match) {
+			// Katex: The $$-delimiters should be in their own line
+			// if there are \\-line-breaks.
+			const formula = match[1];
+			const prefix = formula.startsWith('\n') ? '' : '\n';
+			const suffix = formula.endsWith('\n') ? '' : '\n';
+			expr = '$$' + prefix + formula + suffix + '$$';
+		}
+		return expr;
+	});
+
+	// Step 5: Restore code blocks
+	content = content.replace(/<<CODE_BLOCK_(\d+)>>/g, (_, index) => {
+		return codeBlocks[parseInt(index)];
+	});
+
+	// Step 6: Apply additional escaping functions (brackets and mhchem)
+	content = escapeBrackets(content);
+
+	if (doEscapeMhchem && (content.includes('\\ce{') || content.includes('\\pu{'))) {
+		content = escapeMhchem(content);
+	}
+
+	// Final pass: Convert \(...\) → $...$, \[...\] → $$...$$
+	content = content
+		// Using the look‑behind pattern `(?<!\\)` we skip matches
+		// that are preceded by a backslash, e.g.
+		// `Definitions\\(also called macros)` (title of chapter 20 in The TeXbook).
+		.replace(/(?<!\\)\\\((.+?)\\\)/g, '$$$1$') // inline
+		.replace(
+			// Using the look‑behind pattern `(?<!\\)` we skip matches
+			// that are preceded by a backslash, e.g. `\\[4pt]`.
+			/(?<!\\)\\\[([\s\S]*?)\\\]/g, // display, see also PR #16599
+			(_, prefix: string, content: string) => {
+				return `${prefix}$$${content}$$`;
+			}
+		);
+
+	// Step 7: Restore blockquote markers
+	if (blockquoteMarkers.size > 0) {
+		const finalLines = content.split('\n');
+		const restoredLines = finalLines.map((line, index) => {
+			const marker = blockquoteMarkers.get(index);
+			return marker ? marker + line : line;
+		});
+		content = restoredLines.join('\n');
+	}
+
+	return content;
+}
--- a/tools/server/webui/src/stories/fixtures/math-formulas.ts
+++ b/tools/server/webui/src/stories/fixtures/math-formulas.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-irregular-whitespace */
 // Math Formulas Content
 export const MATH_FORMULAS_MD = String.raw`
 # Mathematical Formulas and Expressions
@@ -150,6 +151,70 @@ $$\lim_{x \to 0} \frac{\sin x}{x} = 1$$

 $$\lim_{n \to \infty} \left(1 + \frac{x}{n}\right)^n = e^x$$

+## Further Bracket Styles and Amounts
+
+-  \( \mathrm{GL}_2(\mathbb{F}_7) \): Group of invertible matrices with entries in \(\mathbb{F}_7\).
+- Some kernel of \(\mathrm{SL}_2(\mathbb{F}_7)\):
+  \[
+  \left\{ \begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}, \begin{pmatrix} -1 & 0 \\ 0 & -1 \end{pmatrix} \right\} = \{\pm I\}
+  \]
+- Algebra:
+\[
+x = \frac{-b \pm \sqrt{\,b^{2}-4ac\,}}{2a}
+\]
+- $100 and $12.99 are amounts, not LaTeX.
+- I have $10, $3.99 and $x + y$ and $100x$. The amount is $2,000.
+- Emma buys 2 cupcakes for $3 each and 1 cookie for $1.50. How much money does she spend in total?
+- Maria has $20. She buys a notebook for $4.75 and a pack of pencils for $3.25. How much change does she receive?
+- 1 kg の質量は
+  \[
+  E = (1\ \text{kg}) \times (3.0 \times 10^8\ \text{m/s})^2 \approx 9.0 \times 10^{16}\ \text{J}
+  \]
+  というエネルギーに相当します。これは約 21 百万トンの TNT が爆発したときのエネルギーに匹敵します。
+- Algebra: \[
+x = \frac{-b \pm \sqrt{\,b^{2}-4ac\,}}{2a}
+\]
+- Algebraic topology, Homotopy Groups of $\mathbb{S}^3$:
+$$\pi_n(\mathbb{S}^3) = \begin{cases}
+\mathbb{Z} & n = 3 \\
+0 & n > 3, n \neq 4 \\
+\mathbb{Z}_2 & n = 4 \\
+\end{cases}$$
+- Spacer preceded by backslash:
+\[
+\boxed{
+\begin{aligned}
+N_{\text{att}}^{\text{(MHA)}} &=
+h \bigl[\, d_{\text{model}}\;d_{k} + d_{\text{model}}\;d_{v}\, \bigr]   && (\text{Q,K,V の重み})\\
+&\quad+ h(d_{k}+d_{k}+d_{v})                                          && (\text{バイアス Q,K,V）}\\[4pt]
+&\quad+ (h d_{v})\, d_{\text{model}}                                 && (\text{出力射影 }W^{O})\\
+&\quad+ d_{\text{model}}                                            && (\text{バイアス }b^{O})
+\end{aligned}}
+\]
+
+## Formulas in a Table
+
+| Area | Expression | Comment |
+|------|------------|---------|
+| **Algebra** | \[
+x = \frac{-b \pm \sqrt{\,b^{2}-4ac\,}}{2a}
+\] | Quadratic formula |
+| | \[
+(a+b)^{n} = \sum_{k=0}^{n}\binom{n}{k}\,a^{\,n-k}\,b^{\,k}
+\] | Binomial theorem |
+| | \(\displaystyle \prod_{k=1}^{n}k = n! \) | Factorial definition |
+| **Geometry** | \( \mathbf{a}\cdot \mathbf{b} = \|\mathbf{a}\|\,\|\mathbf{b}\|\,\cos\theta \) | Dot product & angle |
+
+## No math (but chemical)
+
+Balanced chemical reaction with states:
+
+\[
+\ce{2H2(g) + O2(g) -> 2H2O(l)}
+\]
+
+The standard enthalpy change for the reaction is: $\Delta H^\circ = \pu{-572 kJ mol^{-1}}$.
+
 ---

 *This document showcases various mathematical notation and formulas that can be rendered in markdown using LaTeX syntax.*
--- a/tools/server/webui/src/styles/katex-custom.scss
+++ b/tools/server/webui/src/styles/katex-custom.scss
@@ -0,0 +1,13 @@
+// Override KaTeX SCSS variables to disable ttf and woff fonts
+// Only use woff2 format which is embedded in the bundle
+$use-woff2: true;
+$use-woff: false;
+$use-ttf: false;
+
+// Use Vite alias for font folder
+$font-folder: 'katex-fonts';
+
+// Import KaTeX SCSS with overridden variables
+// Note: @import is deprecated but required because KaTeX uses @import internally
+// The deprecation warnings are from KaTeX's code and cannot be avoided
+@import 'katex/src/styles/katex.scss';
--- a/tools/server/webui/svelte.config.js
+++ b/tools/server/webui/svelte.config.js
@@ -22,6 +22,9 @@ const config = {
 		}),
 		output: {
 			bundleStrategy: 'inline'
+		},
+		alias: {
+			$styles: 'src/styles'
 		}
 	},

--- a/tools/server/webui/vite.config.ts
+++ b/tools/server/webui/vite.config.ts
@@ -18,6 +18,15 @@ const GUIDE_FOR_FRONTEND = `

 const MAX_BUNDLE_SIZE = 2 * 1024 * 1024;

+/**
+ * the maximum size of an embedded asset in bytes,
+ * e.g. maximum size of embedded font (see node_modules/katex/dist/fonts/*.woff2)
+ */
+const MAX_ASSET_SIZE = 32000;
+
+/** public/index.html.gz minified flag */
+const ENABLE_JS_MINIFICATION = true;
+
 function llamaCppBuildPlugin() {
 	return {
 		name: 'llamacpp:build',
@@ -75,12 +84,28 @@ function llamaCppBuildPlugin() {
 }

 export default defineConfig({
-	build: {
-		chunkSizeWarningLimit: 3072
+	resolve: {
+		alias: {
+			'katex-fonts': resolve('node_modules/katex/dist/fonts')
+		}
+	},
+	build: {
+		assetsInlineLimit: MAX_ASSET_SIZE,
+		chunkSizeWarningLimit: 3072,
+		minify: ENABLE_JS_MINIFICATION
+	},
+	css: {
+		preprocessorOptions: {
+			scss: {
+				additionalData: `
+					$use-woff2: true;
+					$use-woff: false;
+					$use-ttf: false;
+				`
+			}
+		}
 	},
-
 	plugins: [tailwindcss(), sveltekit(), devtoolsJson(), llamaCppBuildPlugin()],
-
 	test: {
 		projects: [
 			{