feat: enhance commands with multi-subtask support, MCP integration, and update notifications

- Add support for comma-separated subtask IDs in remove-subtask command
- Implement MCP configuration in project initialization
- Add package update notification system with version comparison
- Improve command documentation with boolean flag conventions
- Add comprehensive error handling for unknown options
- Update help text with better examples and formatting
- Implement proper validation for command inputs
- Add global error handling patterns with helpful user messages

test-version-check.js

@@ -0,0 +1,22 @@
+import { displayUpgradeNotification, compareVersions } from './scripts/modules/commands.js';
+
+// Simulate different version scenarios
+console.log('=== Simulating version check ===\n');
+
+// 1. Current version is older than latest (should show update notice)
+console.log('Scenario 1: Current version older than latest');
+displayUpgradeNotification('0.9.30', '1.0.0');
+
+// 2. Current version same as latest (no update needed)
+console.log('\nScenario 2: Current version same as latest (this would not normally show a notice)');
+console.log('Current: 1.0.0, Latest: 1.0.0');
+console.log('compareVersions result:', compareVersions('1.0.0', '1.0.0'));
+console.log('Update needed:', compareVersions('1.0.0', '1.0.0') < 0 ? 'Yes' : 'No');
+
+// 3. Current version newer than latest (e.g., development version, would not show notice)
+console.log('\nScenario 3: Current version newer than latest (this would not normally show a notice)');
+console.log('Current: 1.1.0, Latest: 1.0.0');
+console.log('compareVersions result:', compareVersions('1.1.0', '1.0.0'));
+console.log('Update needed:', compareVersions('1.1.0', '1.0.0') < 0 ? 'Yes' : 'No');
+
+console.log('\n=== Test complete ===');