feat: Complete CLI consolidation - fix redundancy and missing interfaces

🎯 MAJOR CLI ARCHITECTURE CONSOLIDATION:

✅ Added Missing CLI Entry Points:
• tddai = "tddai_cli:main" - TDD workflow management
• issue = "cli.issue_cli:main" - Pure issue management
• All three CLIs now properly installed: markitect, tddai, issue

🧹 Eliminated Functionality Redundancy:
• Removed issue commands from markitect/cli.py (clean separation)
• MarkiTect now focuses purely on document processing
• TDD workflow in tddai CLI, issue management in issue CLI

🏗️ Clean Architecture Implementation:
• Created cli/issue_cli.py - Dedicated pure issue management
• Enhanced cli/commands/export.py with export_issues_csv/json
• Updated cli/core.py with proper export method delegation
• Fixed pyproject.toml to include all required packages

🧪 Comprehensive Testing:
• Added tests/test_cli_consolidation.py - Prevents CLI regression
• Tests ensure all CLIs are installed and functional
• Tests verify no functionality duplication
• Regression protection against missing CLI commands

📋 Clear Separation of Concerns:
• markitect CLI - Document processing, templates, performance
• tddai CLI - TDD workflow, workspace management, coverage
• issue CLI - Pure issue operations, project management, export

🔧 Package Configuration:
• Updated pyproject.toml to include cli*, tddai*, services*, etc.
• Added py-modules for tddai_cli standalone module
• Fixed import paths and dependencies

This consolidation resolves the major redundancy identified in issues
functionality and ensures proper CLI interfaces are available and tested.

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

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

cli/commands/issues.py

@@ -105,6 +105,26 @@ class IssueCommands:
         except TddaiError as e:
             OutputFormatter.exit_with_error(f"Error creating issue from template: {e}")
 
+    def close_issue(self, issue_number: int, comment: str = "") -> None:
+        """Close an issue with optional comment."""
+        try:
+            OutputFormatter.info(f"Closing issue #{issue_number}")
+            if comment:
+                OutputFormatter.info(f"Comment: {comment}")
+            OutputFormatter.empty_line()
+
+            result = self.service.close_issue(issue_number, comment)
+
+            OutputFormatter.success(f"Issue #{issue_number} closed successfully!")
+            OutputFormatter.key_value("Title", result['title'])
+            OutputFormatter.key_value("State", result['state'])
+
+            if 'html_url' in result:
+                OutputFormatter.key_value("URL", result['html_url'])
+
+        except TddaiError as e:
+            OutputFormatter.exit_with_error(f"Error closing issue: {e}")
+
     def analyze_coverage(self, issue_number: int) -> None:
         """Analyze test coverage for a specific issue."""
         try: