Fix: Move Stop hook inline code to separate script file

Fixes #78

## Problem
The Stop hook used inline JavaScript code with `node -e`, which caused
shell syntax errors on macOS/zsh due to special characters (parentheses,
braces, arrow functions) being misinterpreted by the shell.

Error message:
/bin/sh: -c: line 0: syntax error near unexpected token \`('

## Solution
- Created scripts/hooks/check-console-log.js with the hook logic
- Updated hooks/hooks.json to reference the external script
- This follows the same pattern as other hooks in the plugin

## Benefits
- Fixes shell compatibility issues across different environments
- Improves code maintainability (separate, well-documented script)
- Follows plugin's own best practices
- Makes the code easier to test and debug

## Testing
Tested on macOS with zsh - no more syntax errors.
The hook still functions correctly to detect console.log statements.

scripts/hooks/check-console-log.js

@@ -0,0 +1,61 @@
+#!/usr/bin/env node
+
+/**
+ * Stop Hook: Check for console.log statements in modified files
+ * 
+ * This hook runs after each response and checks if any modified
+ * JavaScript/TypeScript files contain console.log statements.
+ * It provides warnings to help developers remember to remove
+ * debug statements before committing.
+ */
+
+const { execSync } = require('child_process');
+const fs = require('fs');
+
+let data = '';
+
+// Read stdin
+process.stdin.on('data', chunk => {
+  data += chunk;
+});
+
+process.stdin.on('end', () => {
+  try {
+    // Check if we're in a git repository
+    try {
+      execSync('git rev-parse --git-dir', { stdio: 'pipe' });
+    } catch {
+      // Not in a git repo, just pass through the data
+      console.log(data);
+      process.exit(0);
+    }
+
+    // Get list of modified files
+    const files = execSync('git diff --name-only HEAD', {
+      encoding: 'utf8',
+      stdio: ['pipe', 'pipe', 'pipe']
+    })
+      .split('\n')
+      .filter(f => /\.(ts|tsx|js|jsx)$/.test(f) && fs.existsSync(f));
+
+    let hasConsole = false;
+
+    // Check each file for console.log
+    for (const file of files) {
+      const content = fs.readFileSync(file, 'utf8');
+      if (content.includes('console.log')) {
+        console.error(`[Hook] WARNING: console.log found in ${file}`);
+        hasConsole = true;
+      }
+    }
+
+    if (hasConsole) {
+      console.error('[Hook] Remove console.log statements before committing');
+    }
+  } catch (error) {
+    // Silently ignore errors (git might not be available, etc.)
+  }
+
+  // Always output the original data
+  console.log(data);
+});