diff --git a/gitnexus/package-lock.json b/gitnexus/package-lock.json
index 280d5b366..9ec0598f9 100644
--- a/gitnexus/package-lock.json
+++ b/gitnexus/package-lock.json
@@ -11,7 +11,7 @@
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+        "@ladybugdb/core": "^0.17.0",
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@@ -1159,27 +1159,28 @@
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core/-/core-0.17.0.tgz",
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       "license": "MIT",
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-        "@ladybugdb/core-linux-x64": "0.16.1",
-        "@ladybugdb/core-win32-x64": "0.16.1"
+        "@ladybugdb/core-darwin-arm64": "0.17.0",
+        "@ladybugdb/core-darwin-x64": "0.17.0",
+        "@ladybugdb/core-linux-arm64": "0.17.0",
+        "@ladybugdb/core-linux-x64": "0.17.0",
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-      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-arm64/-/core-darwin-arm64-0.16.1.tgz",
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-arm64/-/core-darwin-arm64-0.17.0.tgz",
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@@ -1190,9 +1191,9 @@
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-x64/-/core-darwin-x64-0.17.0.tgz",
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@@ -1203,9 +1204,9 @@
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-arm64/-/core-linux-arm64-0.17.0.tgz",
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@@ -1216,9 +1217,9 @@
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-x64/-/core-linux-x64-0.17.0.tgz",
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@@ -1229,9 +1230,9 @@
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+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-win32-x64/-/core-win32-x64-0.17.0.tgz",
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@@ -1675,6 +1676,15 @@
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       "license": "MIT"
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+    "node_modules/@swc/helpers": {
+      "version": "0.5.23",
+      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.23.tgz",
+      "integrity": "sha512-5lSsMOTXURePglDfvuAQUqkGek9Hg2kksOYay2m0+XR++b2NWYL/4sWyuvVBIs8oKnJaxkdi9whaL/sqN13afw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tslib": "^2.8.0"
+      }
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@@ -1718,6 +1728,18 @@
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+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/command-line-args/-/command-line-args-5.2.3.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/@types/command-line-usage": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/@types/command-line-usage/-/command-line-usage-5.0.4.tgz",
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+      "license": "MIT"
+    },
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@@ -2069,12 +2091,56 @@
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       }
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+    "node_modules/apache-arrow": {
+      "version": "21.1.0",
+      "resolved": "https://registry.npmjs.org/apache-arrow/-/apache-arrow-21.1.0.tgz",
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+      "license": "Apache-2.0",
+      "dependencies": {
+        "@swc/helpers": "^0.5.11",
+        "@types/command-line-args": "^5.2.3",
+        "@types/command-line-usage": "^5.0.4",
+        "@types/node": "^24.0.3",
+        "command-line-args": "^6.0.1",
+        "command-line-usage": "^7.0.1",
+        "flatbuffers": "^25.1.24",
+        "json-bignum": "^0.0.3",
+        "tslib": "^2.6.2"
+      },
+      "bin": {
+        "arrow2csv": "bin/arrow2csv.js"
+      }
+    },
+    "node_modules/apache-arrow/node_modules/@types/node": {
+      "version": "24.13.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.0.tgz",
+      "integrity": "sha512-5vtOqGQr4NJKeEzV441FcOi2MeG9UTWq9LqVLGneDdu4vlX17H8kQ2PA2UmNwCUGPVDj4oBjNhS7ReVEIWJJrg==",
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.18.0"
+      }
+    },
+    "node_modules/apache-arrow/node_modules/undici-types": {
+      "version": "7.18.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "license": "MIT"
+    },
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       "license": "Python-2.0"
     },
+    "node_modules/array-back": {
+      "version": "6.2.3",
+      "resolved": "https://registry.npmjs.org/array-back/-/array-back-6.2.3.tgz",
+      "integrity": "sha512-SGDvmg6QTYiTxCBkYVmThcoa67uLl35pyzRHdpCGBOcqFy6BtwnphoFPk7LhJshD+Yk1Kt35WGWeZPTgwR4Fhw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.17"
+      }
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       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
@@ -2199,6 +2265,37 @@
         "node": ">=18"
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+    "node_modules/chalk": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
+      "integrity": "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==",
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/chalk?sponsor=1"
+      }
+    },
+    "node_modules/chalk-template": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/chalk-template/-/chalk-template-0.4.0.tgz",
+      "integrity": "sha512-/ghrgmhfY8RaSdeo43hNXxpoHAtxdbskUHjPpfqUWGttFgycUhYPGx3YZBCnUCvOa7Doivn1IZec3DEGFoMgLg==",
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "^4.1.2"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/chalk-template?sponsor=1"
+      }
+    },
     "node_modules/chownr": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/chownr/-/chownr-3.0.0.tgz",
@@ -2281,6 +2378,44 @@
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       "license": "MIT"
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+    "node_modules/command-line-args": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/command-line-args/-/command-line-args-6.0.2.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "array-back": "^6.2.3",
+        "find-replace": "^5.0.2",
+        "lodash.camelcase": "^4.3.0",
+        "typical": "^7.3.0"
+      },
+      "engines": {
+        "node": ">=12.20"
+      },
+      "peerDependencies": {
+        "@75lb/nature": "latest"
+      },
+      "peerDependenciesMeta": {
+        "@75lb/nature": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/command-line-usage": {
+      "version": "7.0.4",
+      "resolved": "https://registry.npmjs.org/command-line-usage/-/command-line-usage-7.0.4.tgz",
+      "integrity": "sha512-85UdvzTNx/+s5CkSgBm/0hzP80RFHAa7PsfeADE5ezZF3uHz3/Tqj9gIKGT9PTtpycc3Ua64T0oVulGfKxzfqg==",
+      "license": "MIT",
+      "dependencies": {
+        "array-back": "^6.2.2",
+        "chalk-template": "^0.4.0",
+        "table-layout": "^4.1.1",
+        "typical": "^7.3.0"
+      },
+      "engines": {
+        "node": ">=12.20.0"
+      }
+    },
     "node_modules/commander": {
       "version": "14.0.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-14.0.3.tgz",
@@ -2819,6 +2954,23 @@
         "url": "https://opencollective.com/express"
       }
     },
+    "node_modules/find-replace": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/find-replace/-/find-replace-5.0.2.tgz",
+      "integrity": "sha512-Y45BAiE3mz2QsrN2fb5QEtO4qb44NcS7en/0y9PEVsg351HsLeVclP8QPMH79Le9sH3rs5RSwJu99W0WPZO43Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14"
+      },
+      "peerDependencies": {
+        "@75lb/nature": "latest"
+      },
+      "peerDependenciesMeta": {
+        "@75lb/nature": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/flatbuffers": {
       "version": "25.9.23",
       "resolved": "https://registry.npmjs.org/flatbuffers/-/flatbuffers-25.9.23.tgz",
@@ -3057,7 +3209,6 @@
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-      "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=8"
@@ -3296,6 +3447,14 @@
         "js-yaml": "bin/js-yaml.js"
       }
     },
+    "node_modules/json-bignum": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/json-bignum/-/json-bignum-0.0.3.tgz",
+      "integrity": "sha512-2WHyXj3OfHSgNyuzDbSxI1w2jgw5gkWSWhS7Qg4bWXx1nLk3jnbwfUeS0PSba3IzpTUWdHxBieELUzXRjQB2zg==",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/json-schema-traverse": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
@@ -3587,6 +3746,12 @@
         "url": "https://opencollective.com/parcel"
       }
     },
+    "node_modules/lodash.camelcase": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz",
+      "integrity": "sha512-TwuEnCnxbc3rAvhf/LbG7tJUDzhqXyFnv3dtzLOPgCG/hODL7WFnsbwktkD7yUV0RrreP/l1PALq/YSg6VvjlA==",
+      "license": "MIT"
+    },
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       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",
@@ -4693,7 +4858,6 @@
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "has-flag": "^4.0.0"
@@ -4702,6 +4866,19 @@
         "node": ">=8"
       }
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+    "node_modules/table-layout": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/table-layout/-/table-layout-4.1.1.tgz",
+      "integrity": "sha512-iK5/YhZxq5GO5z8wb0bY1317uDF3Zjpha0QFFLA8/trAoiLbQD0HUbMesEaxyzUgDxi2QlcbM8IvqOlEjgoXBA==",
+      "license": "MIT",
+      "dependencies": {
+        "array-back": "^6.2.2",
+        "wordwrapjs": "^5.1.0"
+      },
+      "engines": {
+        "node": ">=12.17"
+      }
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     "node_modules/tar": {
       "version": "7.5.13",
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@@ -5035,8 +5212,7 @@
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-      "license": "0BSD",
-      "optional": true
+      "license": "0BSD"
     },
     "node_modules/tsx": {
       "version": "4.22.4",
@@ -5114,6 +5290,15 @@
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+    "node_modules/typical": {
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/typical/-/typical-7.3.0.tgz",
+      "integrity": "sha512-ya4mg/30vm+DOWfBg4YK3j2WD6TWtRkCbasOJr40CseYENzCUby/7rIvXA99JGsQHeNxLbnXdyLLxKSv3tauFw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.17"
+      }
+    },
     "node_modules/undici-types": {
       "version": "7.24.6",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
@@ -5366,6 +5551,15 @@
         "node": ">=8"
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+    "node_modules/wordwrapjs": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/wordwrapjs/-/wordwrapjs-5.1.1.tgz",
+      "integrity": "sha512-0yweIbkINJodk27gX9LBGMzyQdBDan3s/dEAiwBOj+Mf0PPyWL6/rikalkv8EeD0E8jm4o5RXEOrFTP3NXbhJg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.17"
+      }
+    },
     "node_modules/wrap-ansi": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
diff --git a/gitnexus/package.json b/gitnexus/package.json
index 53eb7dedd..54c0b5d5f 100644
--- a/gitnexus/package.json
+++ b/gitnexus/package.json
@@ -55,7 +55,7 @@
   },
   "dependencies": {
     "@huggingface/transformers": "^4.1.0",
-    "@ladybugdb/core": "^0.16.1",
+    "@ladybugdb/core": "^0.17.0",
     "@modelcontextprotocol/sdk": "^1.0.0",
     "@scarf/scarf": "^1.4.0",
     "cli-progress": "^3.12.0",
diff --git a/gitnexus/src/core/ingestion/languages/vue/captures.ts b/gitnexus/src/core/ingestion/languages/vue/captures.ts
index b8031fcdd..b8ec7a8a4 100644
--- a/gitnexus/src/core/ingestion/languages/vue/captures.ts
+++ b/gitnexus/src/core/ingestion/languages/vue/captures.ts
@@ -22,6 +22,7 @@
 import type { CaptureMatch } from 'gitnexus-shared';
 import { extractVueScript } from '../../vue-sfc-extractor.js';
 import { emitTsScopeCaptures } from '../typescript/captures.js';
+import { emitJsScopeCaptures } from '../javascript/captures.js';
 
 /**
  * Emit scope captures for a Vue SFC.
@@ -31,11 +32,11 @@ import { emitTsScopeCaptures } from '../typescript/captures.js';
  *   1. **Full SFC content** (sequential path, <15 files): `sourceText`
  *      contains the whole `.vue` file with `<template>`, `<script>`, etc.
  *      `extractVueScript` extracts the script block and we delegate to
- *      `emitTsScopeCaptures` with that extracted content.
+ *      `emitTsScopeCaptures` or `emitJsScopeCaptures` based on `lang`.
  *
  *   2. **Already-extracted script content** (worker-mode path, ≥15 files):
  *      the parse worker calls `extractVueScript` itself before calling
- *      `extractParsedFile`, so `sourceText` is already the bare TypeScript
+ *      `extractParsedFile`, so `sourceText` is already the bare script
  *      text with no `<script>` tags. The caller marks this explicitly via
  *      `sourceMeta.sourceKind === 'pre-extracted-script'`.
  *
@@ -48,7 +49,7 @@ export function emitVueScopeCaptures(
   sourceText: string,
   filePath: string,
   cachedTree?: unknown,
-  sourceMeta?: { sourceKind?: 'full-file' | 'pre-extracted-script' },
+  sourceMeta?: { sourceKind?: 'full-file' | 'pre-extracted-script'; setupLang?: string },
 ): readonly CaptureMatch[] {
   // Vue resolver may include supporting TS/JS files in the same run to
   // preserve cross-file import/type context for `.vue` callers. These are
@@ -58,10 +59,19 @@ export function emitVueScopeCaptures(
   }
 
   if (sourceMeta?.sourceKind === 'pre-extracted-script') {
+    // Worker-mode path: the parse worker always uses TypeScript grammar for
+    // .vue files. Lang-based grammar selection is a sequential-path feature.
     return emitTsScopeCaptures(sourceText, filePath, cachedTree);
   }
 
   const extracted = extractVueScript(sourceText);
   if (extracted === null) return [];
+
+  // Select captures based on script lang attribute.
+  // Use TS grammar unless ALL blocks explicitly request JS/JSX.
+  // Mixed-lang: TS handles JS natively; JS grammar chokes on TS syntax.
+  if (extracted.lang === 'js' || extracted.lang === 'jsx') {
+    return emitJsScopeCaptures(extracted.scriptContent, filePath, cachedTree);
+  }
   return emitTsScopeCaptures(extracted.scriptContent, filePath, cachedTree);
 }
diff --git a/gitnexus/src/core/ingestion/vue-sfc-extractor.ts b/gitnexus/src/core/ingestion/vue-sfc-extractor.ts
index 1f899fa82..e68f230d6 100644
--- a/gitnexus/src/core/ingestion/vue-sfc-extractor.ts
+++ b/gitnexus/src/core/ingestion/vue-sfc-extractor.ts
@@ -10,10 +10,13 @@
 export interface VueScriptExtraction {
   /** Extracted script content (TypeScript/JavaScript) */
   scriptContent: string;
-  /** 0-based line number in the .vue file where the script content starts */
+  /** 1-based line number in the .vue file where the script content starts
+   * (used as offset from tree-sitter's 0-based row). */
   lineOffset: number;
-  /** true if the primary block is <script setup> */
+  /** true if at least one block is <script setup> */
   isSetup: boolean;
+  /** Value of the `lang` attribute on the extracted script block (e.g. "ts", "js", "tsx", "jsx", or "" for default). */
+  lang: string;
 }
 
 interface ScriptBlock {
@@ -238,11 +241,9 @@ function parseScriptBlock(
 /**
  * Extract script content from a Vue SFC.
  *
- * When both <script> and <script setup> are present, returns only the
- * <script setup> block (the dominant pattern — 94% of Vue files in real
- * projects use setup). The <script> (non-setup) block typically contains
- * only `defineOptions` or legacy option merges and is less important for
- * the knowledge graph.
+ * When both <script> and <script setup> are present, the content of all
+ * blocks is combined (non-setup first, then setup) so the full script
+ * surface is available to the knowledge graph.
  */
 export function extractVueScript(vueContent: string): VueScriptExtraction | null {
   const blocks: ScriptBlock[] = [];
@@ -257,14 +258,22 @@ export function extractVueScript(vueContent: string): VueScriptExtraction | null
 
   if (blocks.length === 0) return null;
 
-  // Prefer <script setup> if present
-  const setupBlock = blocks.find((b) => b.isSetup);
-  const primary = setupBlock ?? blocks[0];
+  // Merge all blocks: non-setup first, then setup, so content order is stable.
+  const nonSetupBlocks = blocks.filter((b) => !b.isSetup);
+  const setupBlocks = blocks.filter((b) => b.isSetup);
+  const ordered = [...nonSetupBlocks, ...setupBlocks];
+  const combinedContent = ordered.map((b) => b.content).join('\n');
+  const lineOffset = ordered[0].lineOffset;
+  // Only use JavaScript grammar when ALL blocks are explicitly lang="js"
+  // or lang="jsx". If any block omits lang or uses ts/tsx, TypeScript wins.
+  const allBlocksJs = blocks.length > 0 && blocks.every((b) => b.lang === 'js' || b.lang === 'jsx');
+  const lang = allBlocksJs ? 'js' : '';
 
   return {
-    scriptContent: primary.content,
-    lineOffset: primary.lineOffset,
-    isSetup: primary.isSetup,
+    scriptContent: combinedContent,
+    lineOffset,
+    isSetup: blocks.some((b) => b.isSetup),
+    lang,
   };
 }
 
diff --git a/gitnexus/test/fixtures/lang-resolution/js-parsing-coverage/class-expression.ts b/gitnexus/test/fixtures/lang-resolution/js-parsing-coverage/class-expression.ts
new file mode 100644
index 000000000..a8289bcee
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-parsing-coverage/class-expression.ts
@@ -0,0 +1,8 @@
+// F44: Class expression — should produce a Class scope for the expression body
+// On main: no @scope.class emitted → methods have no Class parent
+// On this branch: (class) @scope.class emitted → methods get Class scope
+export const instance = class {
+  greet(): string {
+    return 'hello';
+  }
+};
diff --git a/gitnexus/test/fixtures/vue-scope/vue-dual-script/App.vue b/gitnexus/test/fixtures/vue-scope/vue-dual-script/App.vue
new file mode 100644
index 000000000..0a7d8b44c
--- /dev/null
+++ b/gitnexus/test/fixtures/vue-scope/vue-dual-script/App.vue
@@ -0,0 +1,13 @@
+<template>
+  <div>Hello</div>
+</template>
+<script>
+function legacySetup() {
+  return { count: 0 };
+}
+</script>
+<script setup lang="ts">
+function setupInit() {
+  return 42;
+}
+</script>
diff --git a/gitnexus/test/fixtures/vue-scope/vue-js-lang/App.vue b/gitnexus/test/fixtures/vue-scope/vue-js-lang/App.vue
new file mode 100644
index 000000000..06c6e7026
--- /dev/null
+++ b/gitnexus/test/fixtures/vue-scope/vue-js-lang/App.vue
@@ -0,0 +1,8 @@
+<template>
+  <div>Hello</div>
+</template>
+<script lang="js">
+function greet(name) {
+  return 'Hello ' + name;
+}
+</script>
diff --git a/gitnexus/test/integration/resolvers/vue-scope.test.ts b/gitnexus/test/integration/resolvers/vue-scope.test.ts
index 2a828316f..062e5ede0 100644
--- a/gitnexus/test/integration/resolvers/vue-scope.test.ts
+++ b/gitnexus/test/integration/resolvers/vue-scope.test.ts
@@ -473,3 +473,38 @@ describe('Vue cross-file composable and class resolution', () => {
     expect(files.some((f) => f.endsWith('models.ts'))).toBe(true);
   });
 });
+
+// ---------------------------------------------------------------------------
+// F90 — dual-script merge (<script> + <script setup>)
+// ---------------------------------------------------------------------------
+
+describe('F90 — dual-script (<script> + <script setup>)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(path.join(VUE_SCOPE_FIXTURES, 'vue-dual-script'), () => {});
+  }, 60000);
+
+  it('includes symbols from both the non-setup and setup blocks', () => {
+    const funcs = getNodesByLabel(result, 'Function');
+    expect(funcs).toContain('legacySetup');
+    expect(funcs).toContain('setupInit');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// F92 — JS-lang script block (<script lang="js">)
+// ---------------------------------------------------------------------------
+
+describe('F92 — JS-lang script block', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(path.join(VUE_SCOPE_FIXTURES, 'vue-js-lang'), () => {});
+  }, 60000);
+
+  it('parses <script lang="js"> content and finds functions', () => {
+    const funcs = getNodesByLabel(result, 'Function');
+    expect(funcs).toContain('greet');
+  });
+});
diff --git a/gitnexus/test/unit/vue-sfc-extractor.test.ts b/gitnexus/test/unit/vue-sfc-extractor.test.ts
index 62ff990e1..b77e0d34f 100644
--- a/gitnexus/test/unit/vue-sfc-extractor.test.ts
+++ b/gitnexus/test/unit/vue-sfc-extractor.test.ts
@@ -45,13 +45,12 @@ export default {
     expect(result!.scriptContent).toContain('export default');
   });
 
-  it('prefers <script setup> when both blocks exist', () => {
+  it('combines both blocks when <script> and <script setup> both exist', () => {
     const vue = `<script lang="ts">
 export default {
   inheritAttrs: false,
 };
 </script>
-
 <script setup lang="ts">
 import { ref } from 'vue';
 const name = ref('test');
@@ -61,9 +60,78 @@ const name = ref('test');
 `;
     const result = extractVueScript(vue);
     expect(result).not.toBeNull();
+    // F90: both blocks are combined
     expect(result!.isSetup).toBe(true);
     expect(result!.scriptContent).toContain("const name = ref('test')");
-    expect(result!.scriptContent).not.toContain('inheritAttrs');
+    expect(result!.scriptContent).toContain('inheritAttrs');
+  });
+
+  it('returns lang from the script block', () => {
+    const vue = `<script lang="js">
+export default {};
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.lang).toBe('js');
+  });
+
+  it('returns empty lang when no lang attribute', () => {
+    const vue = `<script>
+export default {};
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.lang).toBe('');
+  });
+
+  it('jsx lang triggers JS grammar (maps to lang=js)', () => {
+    const vue = `<script lang="jsx">
+export default {};
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.lang).toBe('js');
+  });
+
+  it('ts lang returns empty (only js/jsx triggers JS grammar)', () => {
+    const vue = `<script lang="ts">
+export default {};
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.lang).toBe('');
+  });
+
+  it('mixed js + ts blocks return empty lang (TypeScript wins)', () => {
+    const vue = `<script lang="js">
+export default {};
+</script>
+<script setup lang="ts">
+import { ref } from 'vue';
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.lang).toBe('');
+  });
+
+  it('isSetup is true when at least one block is setup', () => {
+    const vue = `<script lang="ts">
+export default {};
+</script>
+<script setup lang="ts">
+import { ref } from 'vue';
+</script>
+`;
+    const result = extractVueScript(vue);
+    expect(result).not.toBeNull();
+    expect(result!.isSetup).toBe(true);
+    // ts blocks — lang should be empty
+    expect(result!.lang).toBe('');
   });
 
   it('returns null for .vue files with no <script> block', () => {