chore: add syntax check and reorder CI pipeline

Add 'syntax' step using node --check for each source file.
Reorder CI: syntax → lint → format:check → test (fast checks first).
Fix: use format:check instead of format in CI (don't modify files).

Author: euxx

DEVELOPMENT.md

@@ -19,18 +19,19 @@
 
 ## Scripts
 
-| Command                | Description                                 |
-| ---------------------- | ------------------------------------------- |
-| `npm run ci`           | Run all checks (test + lint + format)       |
-| `npm run dev`          | Run CI then prepare Firefox dev environment |
-| `npm run all`          | Run CI then build Chrome & Firefox packages |
-| `npm test`             | Run tests (Vitest)                          |
-| `npm run prepare`      | Setup Husky git hooks                       |
-| `npm run lint`         | Lint code (oxlint)                          |
-| `npm run format`       | Format code (oxfmt)                         |
-| `npm run format:check` | Check code formatting                       |
-| `npm run build`        | Build Chrome and Firefox packages           |
-| `npm run dev:firefox`  | Create Firefox dev environment              |
+| Command                | Description                                          |
+| ---------------------- | ---------------------------------------------------- |
+| `npm run ci`           | Run all checks (syntax + lint + format:check + test) |
+| `npm run dev`          | Run CI then prepare Firefox dev environment          |
+| `npm run all`          | Run CI then build Chrome & Firefox packages          |
+| `npm test`             | Run tests (Vitest)                                   |
+| `npm run prepare`      | Setup Husky git hooks                                |
+| `npm run syntax`       | Check source files for syntax errors                 |
+| `npm run lint`         | Lint code (oxlint)                                   |
+| `npm run format`       | Format code (oxfmt)                                  |
+| `npm run format:check` | Check code formatting                                |
+| `npm run build`        | Build Chrome and Firefox packages                    |
+| `npm run dev:firefox`  | Create Firefox dev environment                       |
 
 ## Project Structure
 
@@ -65,5 +66,5 @@ npm run dev:firefox
 
 ```bash
 npm test     # Run all tests
-npm run ci   # Run tests + lint + format in one step
+npm run ci   # Run syntax + lint + format:check + test in one step
 ```

package.json

@@ -16,12 +16,13 @@
   },
   "type": "module",
   "scripts": {
-    "ci": "npm run test && npm run lint && npm run format",
+    "ci": "npm run syntax && npm run lint && npm run format:check && npm run test",
     "dev": "npm run ci && npm run dev:firefox",
     "all": "npm run ci && npm run build",
     "build": "rm -rf dist/tmp-firefox dist/*.zip && mkdir -p dist && V=$npm_package_version && zip -r \"dist/github-notifier-pro-chrome-$V.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-$V.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",
+    "syntax": "find src -name '*.js' -exec node --check {} +",
     "lint": "oxlint --deny-warnings src/ tests/",
     "format": "oxfmt --write .",
     "format:check": "oxfmt --check .",