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>

markitect/cli.py

@@ -86,8 +86,7 @@ from .schema_generator import SchemaGenerator
 from .schema_validator import SchemaValidator
 from .exceptions import FileNotFoundError, InvalidDepthError, SchemaValidationError, InvalidSchemaError
 
-# Import issue management commands
-from .issues.commands import issues_group
+# Issue management commands removed - use dedicated 'issue' CLI or 'tddai' CLI instead
 
 # Global options for CLI configuration
 pass_config = click.make_pass_decorator(dict, ensure=True)
@@ -216,8 +215,7 @@ def cli(config, verbose, database, config_file):
         sys.exit(1)
 
 
-# Register issue management commands
-cli.add_command(issues_group, name='issues')
+# Issue management commands removed - use dedicated 'issue' CLI or 'tddai' CLI instead
 
 
 @cli.command()