feat(check): delegate linting to lint command for consistency

Aligns check.mjs with standard pattern across socket-* repos:
- check.mjs now delegates to `pnpm run lint` with appropriate flags
- Removes running eslint directly
- Adds --all and --staged flag support
- Lint command is single source of truth for linting behavior

Author: jdalton

scripts/check.mjs

@@ -1,11 +1,15 @@
 /**
  * @fileoverview Check script for the registry.
  * Runs all quality checks in parallel:
- * - ESLint
+ * - Linting (via lint command)
  * - TypeScript type checking
  *
  * Usage:
- *   node scripts/check.mjs
+ *   node scripts/check.mjs [options]
+ *
+ * Options:
+ *   --all      Run on all files (default behavior)
+ *   --staged   Run on staged files only
  */
 
 import { existsSync } from 'node:fs'
@@ -25,6 +29,27 @@ const registryDistPath = path.join(rootPath, 'registry', 'dist', 'index.js')
 
 async function main() {
   try {
+    const all = process.argv.includes('--all')
+    const staged = process.argv.includes('--staged')
+    const help = process.argv.includes('--help') || process.argv.includes('-h')
+
+    if (help) {
+      logger.log('Check Runner')
+      logger.log('\nUsage: node scripts/check.mjs [options]')
+      logger.log('\nOptions:')
+      logger.log('  --help, -h     Show this help message')
+      logger.log('  --all          Run on all files (default behavior)')
+      logger.log('  --staged       Run on staged files only')
+      logger.log('\nExamples:')
+      logger.log('  node scripts/check.mjs          # Run on all files')
+      logger.log(
+        '  node scripts/check.mjs --all    # Run on all files (explicit)',
+      )
+      logger.log('  node scripts/check.mjs --staged # Run on staged files')
+      process.exitCode = 0
+      return
+    }
+
     printHeader('Running Checks')
 
     // Build @socketsecurity/registry if not already built.
@@ -38,16 +63,17 @@ async function main() {
       }
     }
 
+    // Delegate to lint command with appropriate flags
+    const lintArgs = ['run', 'lint']
+    if (all) {
+      lintArgs.push('--all')
+    } else if (staged) {
+      lintArgs.push('--staged')
+    }
+
     const checks = [
       {
-        args: [
-          'exec',
-          'eslint',
-          '--config',
-          '.config/eslint.config.mjs',
-          '--report-unused-disable-directives',
-          '.',
-        ],
+        args: lintArgs,
         command: 'pnpm',
         options: {
           ...(process.platform === 'win32' && { shell: true }),