fix: use npx cspell instead of adding to devDependencies

- Avoids yarn.lock sync issue that causes CI failure
- npx downloads cspell on-the-fly without requiring it in package.json
- Fixes 'YN0028: The lockfile would have been modified' error

Author: devin-ai-integration[bot]

.github/workflows/ci.yaml

@@ -30,6 +30,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run spell check
-        run: jlpm run spell-check
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx [email protected] "**/*.{md,txt,json,js,ts,tsx,jsx,yml,yaml}"

package.json

@@ -53,8 +53,6 @@
         "stylelint": "jlpm stylelint:check --fix",
         "stylelint:check": "stylelint --cache \"style/**/*.css\"",
         "test": "jest --coverage",
-        "spell-check": "cspell \"**/*.{md,txt,json,js,ts,tsx,jsx,yml,yaml}\"",
-        "spell-check:fix": "cspell \"**/*.{md,txt,json,js,ts,tsx,jsx,yml,yaml}\" --no-exit-code --show-suggestions",
         "watch": "run-p watch:src watch:labextension",
         "watch:src": "tsc -w --sourceMap",
         "watch:labextension": "jupyter labextension watch ."
@@ -72,7 +70,6 @@
         "zod": "^4.1.11"
     },
     "devDependencies": {
-        "cspell": "9.2.1",
         "@jupyterlab/builder": "^4.0.0",
         "@jupyterlab/testutils": "^4.0.0",
         "@types/jest": "^29.2.0",