Fix CI test failures by skipping hooks.json special file

The nextjs-15 configuration contains a hooks.json file which is a special
configuration file for defining hooks, not a regular hook script. The generator
was incorrectly trying to write it as a regular file, causing ENOENT errors
in CI tests.

This fix adds logic to skip hooks.json when processing hooks, preventing
the directory creation failures that were causing tests to fail in CI.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Matt-Dionis

claude-config-composer/src/generator/config-generator.ts

@@ -168,7 +168,13 @@ export class ConfigGenerator {
       const mergedHooks = this.componentMerger.mergeHooks(hookGroups);
 
       // Process hooks (directory already created above)
+      let writtenHooksCount = 0;
       for (const hook of mergedHooks) {
+        // Skip hooks.json as it's a special configuration file that shouldn't be copied
+        if (hook.name === 'hooks.json') {
+          continue;
+        }
+        
         // Validate and sanitize hook data
         const validatedHook = InputValidator.validateHook(hook);
         const hookName =
@@ -177,8 +183,9 @@ export class ConfigGenerator {
         // Write directly to hooksDir
         const hookPath = path.join(hooksDir, hookName);
         await fs.writeFile(hookPath, hookContent);
+        writtenHooksCount++;
       }
-      if (spinner) spinner.text = `${steps[currentStep]} (${mergedHooks.length} hooks)`;
+      if (spinner) spinner.text = `${steps[currentStep]} (${writtenHooksCount} hooks)`;
       if (spinner) spinner.succeed();
 
       // Merge and write settings.json to .claude/