diff --git a/client/components/codeEditor/codeEditor.jsx b/client/components/codeEditor/codeEditor.jsx
index 06d224c6a..c0be756b8 100644
--- a/client/components/codeEditor/codeEditor.jsx
+++ b/client/components/codeEditor/codeEditor.jsx
@@ -12,9 +12,29 @@ import {
 	highlightActiveLine,
 	scrollPastEnd,
 } from "@codemirror/view";
-import { markdown } from "@codemirror/lang-markdown";
+import { markdown, markdownLanguage } from "@codemirror/lang-markdown";
+import { languages } from "@codemirror/language-data";
 import { css } from "@codemirror/lang-css";
-import { basicLightTheme } from "cm6-theme-basic-light";
+import { basicLightHighlightStyle } from "cm6-theme-basic-light";
+import { HighlightStyle } from "@codemirror/language";
+
+import { syntaxHighlighting } from "@codemirror/language";
+import { tags } from "@lezer/highlight";
+
+const highlightStyle = HighlightStyle.define([
+	{
+		tag: tags.heading1,
+		color: "black",
+		fontSize: "1.75em",
+		fontWeight: "700",
+		class: "cm-header cm-header-1",
+	},
+	{
+		tag: tags.processingInstruction,
+		color: "blue",
+	},
+	// …
+]);
 
 const CodeEditor = forwardRef(
 	(
@@ -32,13 +52,13 @@ const CodeEditor = forwardRef(
 	) => {
 		const editorRef = useRef(null);
 		const viewRef = useRef(null);
+		const docsRef = useRef({});
+		const prevTabRef = useRef(tab);
 
 		console.log(props);
 
 		// --- init editor ---
-		useEffect(() => {
-			if (!editorRef.current) return;
-
+		const createExtensions = ({ onChange, language, editorTheme }) => {
 			const updateListener = EditorView.updateListener.of((update) => {
 				if (update.docChanged) {
 					onChange(update.state.doc.toString());
@@ -76,34 +96,36 @@ const CodeEditor = forwardRef(
 				{ key: "Mod-i", run: italicCommand },
 			]);
 
-			const languageExtension = () => {
-				switch (language) {
-					case "gfm":
-						return markdown({ codeLanguages: [] }); // GitHub-flavored Markdown
-					case "css":
-						return css();
-					default:
-						return markdown();
-				}
-			};
+			const languageExtension =
+				language === "css" ? css() : markdown({ base: markdownLanguage, codeLanguages: languages });
 
+			const themeExtension = syntaxHighlighting(basicLightHighlightStyle);
+
+			return [
+				history(),
+				keymap.of(defaultKeymap),
+				customKeymap,
+				updateListener,
+				EditorView.lineWrapping,
+				scrollPastEnd(),
+				languageExtension,
+				highlightActiveLine(),
+				highlightActiveLineGutter(),
+				keymap.of(foldKeymap),
+				foldGutter(),
+				lineNumbers(),
+				themeExtension,
+				syntaxHighlighting(highlightStyle),
+			];
+		};
+
+		useEffect(() => {
+			if (!editorRef.current) return;
+
+			// create initial editor state
 			const state = EditorState.create({
 				doc: value,
-				extensions: [
-					history(),
-					keymap.of(defaultKeymap),
-					customKeymap,
-					updateListener,
-					EditorView.lineWrapping,
-					scrollPastEnd(),
-					languageExtension(),
-					highlightActiveLine(),
-					highlightActiveLineGutter(),
-					keymap.of(foldKeymap),
-					foldGutter(),
-					lineNumbers(),
-					basicLightTheme,
-				],
+				extensions: createExtensions({ onChange, language, editorTheme }),
 			});
 
 			viewRef.current = new EditorView({
@@ -111,10 +133,37 @@ const CodeEditor = forwardRef(
 				parent: editorRef.current,
 			});
 
+			// save initial state for current tab
+			docsRef.current[tab] = state;
+
 			return () => viewRef.current?.destroy();
 		}, []);
 
-		// --- sync external value ---
+		useEffect(() => {
+			const view = viewRef.current;
+			if (!view) return;
+
+			const prevTab = prevTabRef.current;
+
+			if (prevTab !== tab) {
+				// save current state
+				docsRef.current[prevTab] = view.state;
+
+				// restore or create
+				let nextState = docsRef.current[tab];
+
+				if (!nextState) {
+					nextState = EditorState.create({
+						doc: value,
+						extensions: createExtensions({ onChange, language, editorTheme }),
+					});
+				}
+
+				view.setState(nextState);
+				prevTabRef.current = tab;
+			}
+		}, [tab]);
+
 		useEffect(() => {
 			const view = viewRef.current;
 			if (!view) return;
@@ -126,7 +175,6 @@ const CodeEditor = forwardRef(
 				});
 			}
 		}, [value]);
-
 		// --- exposed API ---
 		useImperativeHandle(ref, () => ({
 			getValue: () => viewRef.current.state.doc.toString(),
diff --git a/package-lock.json b/package-lock.json
index 0daeb5ab7..b0747fce0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,14 +16,17 @@
         "@babel/preset-react": "^7.28.5",
         "@babel/runtime": "^7.28.6",
         "@codemirror/commands": "^6.10.3",
+        "@codemirror/highlight": "^0.19.8",
         "@codemirror/lang-css": "^6.3.1",
         "@codemirror/lang-javascript": "^6.2.5",
         "@codemirror/lang-markdown": "^6.5.0",
         "@codemirror/language": "^6.12.2",
+        "@codemirror/language-data": "^6.5.2",
         "@codemirror/state": "^6.6.0",
         "@codemirror/view": "^6.40.0",
         "@dmsnell/diff-match-patch": "^1.1.0",
         "@googleapis/drive": "^20.1.0",
+        "@lezer/highlight": "^1.2.3",
         "@sanity/diff-match-patch": "^3.2.0",
         "@vitejs/plugin-react": "^5.1.2",
         "body-parser": "^2.2.0",
@@ -2068,6 +2071,95 @@
         "@lezer/common": "^1.1.0"
       }
     },
+    "node_modules/@codemirror/highlight": {
+      "version": "0.19.8",
+      "resolved": "https://registry.npmjs.org/@codemirror/highlight/-/highlight-0.19.8.tgz",
+      "integrity": "sha512-v/lzuHjrYR8MN2mEJcUD6fHSTXXli9C1XGYpr+ElV6fLBIUhMTNKR3qThp611xuWfXfwDxeL7ppcbkM/MzPV3A==",
+      "deprecated": "As of 0.20.0, this package has been split between @lezer/highlight and @codemirror/language",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^0.19.0",
+        "@codemirror/rangeset": "^0.19.0",
+        "@codemirror/state": "^0.19.3",
+        "@codemirror/view": "^0.19.39",
+        "@lezer/common": "^0.15.0",
+        "style-mod": "^4.0.0"
+      }
+    },
+    "node_modules/@codemirror/highlight/node_modules/@codemirror/language": {
+      "version": "0.19.10",
+      "resolved": "https://registry.npmjs.org/@codemirror/language/-/language-0.19.10.tgz",
+      "integrity": "sha512-yA0DZ3RYn2CqAAGW62VrU8c4YxscMQn45y/I9sjBlqB1e2OTQLg4CCkMBuMSLXk4xaqjlsgazeOQWaJQOKfV8Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^0.19.0",
+        "@codemirror/text": "^0.19.0",
+        "@codemirror/view": "^0.19.0",
+        "@lezer/common": "^0.15.5",
+        "@lezer/lr": "^0.15.0"
+      }
+    },
+    "node_modules/@codemirror/highlight/node_modules/@codemirror/state": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-0.19.9.tgz",
+      "integrity": "sha512-psOzDolKTZkx4CgUqhBQ8T8gBc0xN5z4gzed109aF6x7D7umpDRoimacI/O6d9UGuyl4eYuDCZmDFr2Rq7aGOw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/text": "^0.19.0"
+      }
+    },
+    "node_modules/@codemirror/highlight/node_modules/@codemirror/view": {
+      "version": "0.19.48",
+      "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-0.19.48.tgz",
+      "integrity": "sha512-0eg7D2Nz4S8/caetCTz61rK0tkHI17V/d15Jy0kLOT8dTLGGNJUponDnW28h2B6bERmPlVHKh8MJIr5OCp1nGw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/rangeset": "^0.19.5",
+        "@codemirror/state": "^0.19.3",
+        "@codemirror/text": "^0.19.0",
+        "style-mod": "^4.0.0",
+        "w3c-keyname": "^2.2.4"
+      }
+    },
+    "node_modules/@codemirror/highlight/node_modules/@lezer/common": {
+      "version": "0.15.12",
+      "resolved": "https://registry.npmjs.org/@lezer/common/-/common-0.15.12.tgz",
+      "integrity": "sha512-edfwCxNLnzq5pBA/yaIhwJ3U3Kz8VAUOTRg0hhxaizaI1N+qxV7EXDv/kLCkLeq2RzSFvxexlaj5Mzfn2kY0Ig==",
+      "license": "MIT"
+    },
+    "node_modules/@codemirror/highlight/node_modules/@lezer/lr": {
+      "version": "0.15.8",
+      "resolved": "https://registry.npmjs.org/@lezer/lr/-/lr-0.15.8.tgz",
+      "integrity": "sha512-bM6oE6VQZ6hIFxDNKk8bKPa14hqFrV07J/vHGOeiAbJReIaQXmkVb6xQu4MR+JBTLa5arGRyAAjJe1qaQt3Uvg==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^0.15.0"
+      }
+    },
+    "node_modules/@codemirror/lang-angular": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-angular/-/lang-angular-0.1.4.tgz",
+      "integrity": "sha512-oap+gsltb/fzdlTQWD6BFF4bSLKcDnlxDsLdePiJpCVNKWXSTAbiiQeYI3UmES+BLAdkmIC1WjyztC1pi/bX4g==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/lang-javascript": "^6.1.2",
+        "@codemirror/language": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.3.3"
+      }
+    },
+    "node_modules/@codemirror/lang-cpp": {
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-cpp/-/lang-cpp-6.0.3.tgz",
+      "integrity": "sha512-URM26M3vunFFn9/sm6rzqrBzDgfWuDixp85uTY49wKudToc2jTHUrKIGGKs+QWND+YLofNNZpxcNGRynFJfvgA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/cpp": "^1.0.0"
+      }
+    },
     "node_modules/@codemirror/lang-css": {
       "version": "6.3.1",
       "resolved": "https://registry.npmjs.org/@codemirror/lang-css/-/lang-css-6.3.1.tgz",
@@ -2081,6 +2173,19 @@
         "@lezer/css": "^1.1.7"
       }
     },
+    "node_modules/@codemirror/lang-go": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-go/-/lang-go-6.0.1.tgz",
+      "integrity": "sha512-7fNvbyNylvqCphW9HD6WFnRpcDjr+KXX/FgqXy5H5ZS0eC5edDljukm/yNgYkwTsgp2busdod50AOTIy6Jikfg==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/language": "^6.6.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.0.0",
+        "@lezer/go": "^1.0.0"
+      }
+    },
     "node_modules/@codemirror/lang-html": {
       "version": "6.4.11",
       "resolved": "https://registry.npmjs.org/@codemirror/lang-html/-/lang-html-6.4.11.tgz",
@@ -2098,6 +2203,16 @@
         "@lezer/html": "^1.3.12"
       }
     },
+    "node_modules/@codemirror/lang-java": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-java/-/lang-java-6.0.2.tgz",
+      "integrity": "sha512-m5Nt1mQ/cznJY7tMfQTJchmrjdjQ71IDs+55d1GAa8DGaB8JXWsVCkVT284C3RTASaY43YknrK2X3hPO/J3MOQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/java": "^1.0.0"
+      }
+    },
     "node_modules/@codemirror/lang-javascript": {
       "version": "6.2.5",
       "resolved": "https://registry.npmjs.org/@codemirror/lang-javascript/-/lang-javascript-6.2.5.tgz",
@@ -2113,6 +2228,58 @@
         "@lezer/javascript": "^1.0.0"
       }
     },
+    "node_modules/@codemirror/lang-jinja": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-jinja/-/lang-jinja-6.0.0.tgz",
+      "integrity": "sha512-47MFmRcR8UAxd8DReVgj7WJN1WSAMT7OJnewwugZM4XiHWkOjgJQqvEM1NpMj9ALMPyxmlziEI1opH9IaEvmaw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.2.0",
+        "@lezer/lr": "^1.4.0"
+      }
+    },
+    "node_modules/@codemirror/lang-json": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-json/-/lang-json-6.0.2.tgz",
+      "integrity": "sha512-x2OtO+AvwEHrEwR0FyyPtfDUiloG3rnVTSZV1W8UteaLL8/MajQd8DpvUb2YVzC+/T18aSDv0H9mu+xw0EStoQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/json": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-less": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-less/-/lang-less-6.0.2.tgz",
+      "integrity": "sha512-EYdQTG22V+KUUk8Qq582g7FMnCZeEHsyuOJisHRft/mQ+ZSZ2w51NupvDUHiqtsOy7It5cHLPGfHQLpMh9bqpQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-css": "^6.2.0",
+        "@codemirror/language": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-liquid": {
+      "version": "6.3.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-liquid/-/lang-liquid-6.3.2.tgz",
+      "integrity": "sha512-6PDVU3ZnfeYyz1at1E/ttorErZvZFXXt1OPhtfe1EZJ2V2iDFa0CwPqPgG5F7NXN0yONGoBogKmFAafKTqlwIw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.0.0",
+        "@lezer/common": "^1.0.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.3.1"
+      }
+    },
     "node_modules/@codemirror/lang-markdown": {
       "version": "6.5.0",
       "resolved": "https://registry.npmjs.org/@codemirror/lang-markdown/-/lang-markdown-6.5.0.tgz",
@@ -2128,6 +2295,124 @@
         "@lezer/markdown": "^1.0.0"
       }
     },
+    "node_modules/@codemirror/lang-php": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-php/-/lang-php-6.0.2.tgz",
+      "integrity": "sha512-ZKy2v1n8Fc8oEXj0Th0PUMXzQJ0AIR6TaZU+PbDHExFwdu+guzOA4jmCHS1Nz4vbFezwD7LyBdDnddSJeScMCA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.0.0",
+        "@lezer/php": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-python": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-python/-/lang-python-6.2.1.tgz",
+      "integrity": "sha512-IRjC8RUBhn9mGR9ywecNhB51yePWCGgvHfY1lWN/Mrp3cKuHr0isDKia+9HnvhiWNnMpbGhWrkhuWOc09exRyw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.3.2",
+        "@codemirror/language": "^6.8.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.2.1",
+        "@lezer/python": "^1.1.4"
+      }
+    },
+    "node_modules/@codemirror/lang-rust": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-rust/-/lang-rust-6.0.2.tgz",
+      "integrity": "sha512-EZaGjCUegtiU7kSMvOfEZpaCReowEf3yNidYu7+vfuGTm9ow4mthAparY5hisJqOHmJowVH3Upu+eJlUji6qqA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/rust": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-sass": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-sass/-/lang-sass-6.0.2.tgz",
+      "integrity": "sha512-l/bdzIABvnTo1nzdY6U+kPAC51czYQcOErfzQ9zSm9D8GmNPD0WTW8st/CJwBTPLO8jlrbyvlSEcN20dc4iL0Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-css": "^6.2.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.0.2",
+        "@lezer/sass": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-sql": {
+      "version": "6.10.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-sql/-/lang-sql-6.10.0.tgz",
+      "integrity": "sha512-6ayPkEd/yRw0XKBx5uAiToSgGECo/GY2NoJIHXIIQh1EVwLuKoU8BP/qK0qH5NLXAbtJRLuT73hx7P9X34iO4w==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-vue": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-vue/-/lang-vue-0.1.3.tgz",
+      "integrity": "sha512-QSKdtYTDRhEHCfo5zOShzxCmqKJvgGrZwDQSdbvCRJ5pRLWBS7pD/8e/tH44aVQT6FKm0t6RVNoSUWHOI5vNug==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/lang-javascript": "^6.1.2",
+        "@codemirror/language": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.3.1"
+      }
+    },
+    "node_modules/@codemirror/lang-wast": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-wast/-/lang-wast-6.0.2.tgz",
+      "integrity": "sha512-Imi2KTpVGm7TKuUkqyJ5NRmeFWF7aMpNiwHnLQe0x9kmrxElndyH0K6H/gXtWwY6UshMRAhpENsgfpSwsgmC6Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-xml": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-xml/-/lang-xml-6.1.0.tgz",
+      "integrity": "sha512-3z0blhicHLfwi2UgkZYRPioSgVTo9PV5GP5ducFH6FaHy0IAJRg+ixj5gTR1gnT/glAIC8xv4w2VL1LoZfs+Jg==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/language": "^6.4.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.0.0",
+        "@lezer/common": "^1.0.0",
+        "@lezer/xml": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/lang-yaml": {
+      "version": "6.1.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-yaml/-/lang-yaml-6.1.2.tgz",
+      "integrity": "sha512-dxrfG8w5Ce/QbT7YID7mWZFKhdhsaTNOYjOkSIMt1qmC4VQnXSDSYVHHHn8k6kJUfIhtLo8t1JJgltlxWdsITw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.2.0",
+        "@lezer/lr": "^1.0.0",
+        "@lezer/yaml": "^1.0.0"
+      }
+    },
     "node_modules/@codemirror/language": {
       "version": "6.12.2",
       "resolved": "https://registry.npmjs.org/@codemirror/language/-/language-6.12.2.tgz",
@@ -2143,6 +2428,46 @@
         "style-mod": "^4.0.0"
       }
     },
+    "node_modules/@codemirror/language-data": {
+      "version": "6.5.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/language-data/-/language-data-6.5.2.tgz",
+      "integrity": "sha512-CPkWBKrNS8stYbEU5kwBwTf3JB1kghlbh4FSAwzGW2TEscdeHHH4FGysREW86Mqnj3Qn09s0/6Ea/TutmoTobg==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/lang-angular": "^0.1.0",
+        "@codemirror/lang-cpp": "^6.0.0",
+        "@codemirror/lang-css": "^6.0.0",
+        "@codemirror/lang-go": "^6.0.0",
+        "@codemirror/lang-html": "^6.0.0",
+        "@codemirror/lang-java": "^6.0.0",
+        "@codemirror/lang-javascript": "^6.0.0",
+        "@codemirror/lang-jinja": "^6.0.0",
+        "@codemirror/lang-json": "^6.0.0",
+        "@codemirror/lang-less": "^6.0.0",
+        "@codemirror/lang-liquid": "^6.0.0",
+        "@codemirror/lang-markdown": "^6.0.0",
+        "@codemirror/lang-php": "^6.0.0",
+        "@codemirror/lang-python": "^6.0.0",
+        "@codemirror/lang-rust": "^6.0.0",
+        "@codemirror/lang-sass": "^6.0.0",
+        "@codemirror/lang-sql": "^6.0.0",
+        "@codemirror/lang-vue": "^0.1.1",
+        "@codemirror/lang-wast": "^6.0.0",
+        "@codemirror/lang-xml": "^6.0.0",
+        "@codemirror/lang-yaml": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/legacy-modes": "^6.4.0"
+      }
+    },
+    "node_modules/@codemirror/legacy-modes": {
+      "version": "6.5.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/legacy-modes/-/legacy-modes-6.5.2.tgz",
+      "integrity": "sha512-/jJbwSTazlQEDOQw2FJ8LEEKVS72pU0lx6oM54kGpL8t/NJ2Jda3CZ4pcltiKTdqYSRk3ug1B3pil1gsjA6+8Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0"
+      }
+    },
     "node_modules/@codemirror/lint": {
       "version": "6.9.5",
       "resolved": "https://registry.npmjs.org/@codemirror/lint/-/lint-6.9.5.tgz",
@@ -2154,6 +2479,25 @@
         "crelt": "^1.0.5"
       }
     },
+    "node_modules/@codemirror/rangeset": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/rangeset/-/rangeset-0.19.9.tgz",
+      "integrity": "sha512-V8YUuOvK+ew87Xem+71nKcqu1SXd5QROMRLMS/ljT5/3MCxtgrRie1Cvild0G/Z2f1fpWxzX78V0U4jjXBorBQ==",
+      "deprecated": "As of 0.20.0, this package has been merged into @codemirror/state",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^0.19.0"
+      }
+    },
+    "node_modules/@codemirror/rangeset/node_modules/@codemirror/state": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-0.19.9.tgz",
+      "integrity": "sha512-psOzDolKTZkx4CgUqhBQ8T8gBc0xN5z4gzed109aF6x7D7umpDRoimacI/O6d9UGuyl4eYuDCZmDFr2Rq7aGOw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/text": "^0.19.0"
+      }
+    },
     "node_modules/@codemirror/state": {
       "version": "6.6.0",
       "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-6.6.0.tgz",
@@ -2164,6 +2508,13 @@
         "@marijn/find-cluster-break": "^1.0.0"
       }
     },
+    "node_modules/@codemirror/text": {
+      "version": "0.19.6",
+      "resolved": "https://registry.npmjs.org/@codemirror/text/-/text-0.19.6.tgz",
+      "integrity": "sha512-T9jnREMIygx+TPC1bOuepz18maGq/92q2a+n4qTqObKwvNMg+8cMTslb8yxeEDEq7S3kpgGWxgO1UWbQRij0dA==",
+      "deprecated": "As of 0.20.0, this package has been merged into @codemirror/state",
+      "license": "MIT"
+    },
     "node_modules/@codemirror/view": {
       "version": "6.40.0",
       "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-6.40.0.tgz",
@@ -3513,6 +3864,17 @@
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       "license": "MIT"
     },
+    "node_modules/@lezer/cpp": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/@lezer/cpp/-/cpp-1.1.5.tgz",
+      "integrity": "sha512-DIhSXmYtJKLehrjzDFN+2cPt547ySQ41nA8yqcDf/GxMc+YM736xqltFkvADL2M0VebU5I+3+4ks2Vv+Kyq3Aw==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
     "node_modules/@lezer/css": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/@lezer/css/-/css-1.3.2.tgz",
@@ -3524,6 +3886,17 @@
         "@lezer/lr": "^1.3.0"
       }
     },
+    "node_modules/@lezer/go": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@lezer/go/-/go-1.0.1.tgz",
+      "integrity": "sha512-xToRsYxwsgJNHTgNdStpcvmbVuKxTapV0dM0wey1geMMRc9aggoVyKgzYp41D2/vVOx+Ii4hmE206kvxIXBVXQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.3.0"
+      }
+    },
     "node_modules/@lezer/highlight": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/@lezer/highlight/-/highlight-1.2.3.tgz",
@@ -3545,6 +3918,17 @@
         "@lezer/lr": "^1.0.0"
       }
     },
+    "node_modules/@lezer/java": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@lezer/java/-/java-1.1.3.tgz",
+      "integrity": "sha512-yHquUfujwg6Yu4Fd1GNHCvidIvJwi/1Xu2DaKl/pfWIA2c1oXkVvawH3NyXhCaFx4OdlYBVX5wvz2f7Aoa/4Xw==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
     "node_modules/@lezer/javascript": {
       "version": "1.5.4",
       "resolved": "https://registry.npmjs.org/@lezer/javascript/-/javascript-1.5.4.tgz",
@@ -3556,6 +3940,17 @@
         "@lezer/lr": "^1.3.0"
       }
     },
+    "node_modules/@lezer/json": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@lezer/json/-/json-1.0.3.tgz",
+      "integrity": "sha512-BP9KzdF9Y35PDpv04r0VeSTKDeox5vVr3efE7eBbx3r4s3oNLfunchejZhjArmeieBH+nVOpgIiBJpEAv8ilqQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
     "node_modules/@lezer/lr": {
       "version": "1.4.8",
       "resolved": "https://registry.npmjs.org/@lezer/lr/-/lr-1.4.8.tgz",
@@ -3575,6 +3970,72 @@
         "@lezer/highlight": "^1.0.0"
       }
     },
+    "node_modules/@lezer/php": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/@lezer/php/-/php-1.0.5.tgz",
+      "integrity": "sha512-W7asp9DhM6q0W6DYNwIkLSKOvxlXRrif+UXBMxzsJUuqmhE7oVU+gS3THO4S/Puh7Xzgm858UNaFi6dxTP8dJA==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.1.0"
+      }
+    },
+    "node_modules/@lezer/python": {
+      "version": "1.1.18",
+      "resolved": "https://registry.npmjs.org/@lezer/python/-/python-1.1.18.tgz",
+      "integrity": "sha512-31FiUrU7z9+d/ElGQLJFXl+dKOdx0jALlP3KEOsGTex8mvj+SoE1FgItcHWK/axkxCHGUSpqIHt6JAWfWu9Rhg==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/rust": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@lezer/rust/-/rust-1.0.2.tgz",
+      "integrity": "sha512-Lz5sIPBdF2FUXcWeCu1//ojFAZqzTQNRga0aYv6dYXqJqPfMdCAI0NzajWUd4Xijj1IKJLtjoXRPMvTKWBcqKg==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/sass": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@lezer/sass/-/sass-1.1.0.tgz",
+      "integrity": "sha512-3mMGdCTUZ/84ArHOuXWQr37pnf7f+Nw9ycPUeKX+wu19b7pSMcZGLbaXwvD2APMBDOGxPmpK/O6S1v1EvLoqgQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/xml": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/@lezer/xml/-/xml-1.0.6.tgz",
+      "integrity": "sha512-CdDwirL0OEaStFue/66ZmFSeppuL6Dwjlk8qk153mSQwiSH/Dlri4GNymrNWnUmPl2Um7QfV1FO9KFUyX3Twww==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/yaml": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@lezer/yaml/-/yaml-1.0.4.tgz",
+      "integrity": "sha512-2lrrHqxalACEbxIbsjhqGpSW8kWpUKuY6RHgnSAFZa6qK62wvnPxA8hGOwOoDbwHcOFs5M4o27mjGu+P7TvBmw==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.4.0"
+      }
+    },
     "node_modules/@marijn/find-cluster-break": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/@marijn/find-cluster-break/-/find-cluster-break-1.0.2.tgz",
diff --git a/package.json b/package.json
index 432f59c16..1d1668437 100644
--- a/package.json
+++ b/package.json
@@ -92,14 +92,17 @@
     "@babel/preset-react": "^7.28.5",
     "@babel/runtime": "^7.28.6",
     "@codemirror/commands": "^6.10.3",
+    "@codemirror/highlight": "^0.19.8",
     "@codemirror/lang-css": "^6.3.1",
     "@codemirror/lang-javascript": "^6.2.5",
     "@codemirror/lang-markdown": "^6.5.0",
     "@codemirror/language": "^6.12.2",
+    "@codemirror/language-data": "^6.5.2",
     "@codemirror/state": "^6.6.0",
     "@codemirror/view": "^6.40.0",
     "@dmsnell/diff-match-patch": "^1.1.0",
     "@googleapis/drive": "^20.1.0",
+    "@lezer/highlight": "^1.2.3",
     "@sanity/diff-match-patch": "^3.2.0",
     "@vitejs/plugin-react": "^5.1.2",
     "body-parser": "^2.2.0",