chore: treat lint warnings as errors

Author: euxx

package.json

@@ -22,7 +22,7 @@
     "build": "rm -rf dist && mkdir -p dist && zip -r dist/github-notifier-pro-chrome.zip manifest.json src/ images/ -x '*.DS_Store' '*.git*' '*node_modules*' '*.md' && mkdir -p dist/tmp-firefox && cp manifest-firefox.json dist/tmp-firefox/manifest.json && cp -r src images dist/tmp-firefox/ && (cd dist/tmp-firefox && zip -r ../github-notifier-pro-firefox.zip manifest.json src/ images/ -x '*.DS_Store' '*.git*' '*node_modules*' '*.md') && rm -rf dist/tmp-firefox && echo '✨ Build complete! Chrome & Firefox packages in dist/'",
     "dev:firefox": "rm -rf dist/firefox-dev && mkdir -p dist/firefox-dev && cp manifest-firefox.json dist/firefox-dev/manifest.json && cp -r src dist/firefox-dev/ && cp -r images dist/firefox-dev/ && echo '🦊 Firefox dev environment ready at dist/firefox-dev/'",
     "test": "vitest run",
-    "lint": "oxlint src/ tests/",
+    "lint": "oxlint --deny-warnings src/ tests/",
     "format": "oxfmt --write .",
     "format:check": "oxfmt --check .",
     "prepare": "husky"
@@ -40,7 +40,7 @@
       "oxfmt --write"
     ],
     "*.js": [
-      "oxlint"
+      "oxlint --deny-warnings"
     ]
   }
 }