feat(git-workflow): Add automatic git branch-tag integration

- Implement automatic tag creation when switching to new git branches

- Add branch-tag mapping system for seamless context switching

- Enable auto-switch of task contexts based on current git branch

- Provide isolated task contexts per branch to prevent merge conflicts

- Add configuration support for enabling/disabling git workflow features

- Fix ES module compatibility issues in git-utils module

- Maintain zero migration impact with automatic 'master' tag creation

- Support parallel development with branch-specific task contexts

The git workflow system automatically detects branch changes and creates corresponding empty task tags, enabling developers to maintain separate task contexts for different features/branches while preventing task-related merge conflicts during collaborative development.

Resolves git workflow integration requirements for multi-context development.

scripts/modules/utils/git-utils.js

@@ -5,10 +5,10 @@
  * MCP-friendly: All functions require projectRoot parameter
  */
 
-const { exec, execSync } = require('child_process');
-const { promisify } = require('util');
-const path = require('path');
-const fs = require('fs');
+import { exec, execSync } from 'child_process';
+import { promisify } from 'util';
+import path from 'path';
+import fs from 'fs';
 
 const execAsync = promisify(exec);
 
@@ -614,7 +614,7 @@ function getCurrentBranchSync(projectRoot) {
 }
 
 // Export all functions
-module.exports = {
+export {
 	isGitRepository,
 	getCurrentBranch,
 	getLocalBranches,