Prevent duplicate CreateDir operations when rules directory
is the same as config directory by checking if the directory
creation has already been planned before adding another one.
- Make parse_config_root() public for reuse in main.rs
- Add get_rules_path() helper to extract and resolve rules path from config
- Update main CLI to use configured rules path for default rule execution
- Add run_with_rules_path() method to RulesCli for custom path support
- Update all unit tests to include rules_dir field
- Rules path now supports h:, c:, r: prefixes throughout the application
- Add Rules::load_from() and Rules::save_to() methods for custom paths
- Add --rules-dir option to init command
- Support h:, c:, r: path prefixes for rules directory
- Generate config file with correct rules path when using separate directory
- Create rules directory automatically if it doesn't exist
- Maintain backward compatibility with default ~/.cull-gmail/rules.toml
- Change &PathBuf to &Path parameter in plan_credential_file_operation
- Use inline format string in log message
- Both formatting and linting now clean
## Refactoring Changes
### plan_operations function:
- Split monolithic function into focused single-purpose methods
- Extract plan_config_directory, plan_credential_file_operation, etc.
- Add check_file_conflicts helper to eliminate repetitive error checking
- Fix should_backup logic (was always returning true)
### execute_operation function:
- Replace large match statement with focused execution methods
- Extract execute_create_directory, execute_copy_file, etc.
- Add handle_existing_file helper for backup/interactive logic
- Add prompt_for_overwrite and apply_permissions_if_needed helpers
## Benefits:
- Each function now has single responsibility
- Eliminated code duplication in conflict checking and interactive prompts
- Reduced cyclomatic complexity from ~15 to 2-3 per function
- Improved testability and maintainability
- All tests continue to pass
- Add comprehensive Operation enum for file/directory operations
- Implement path resolution with h:, c:, r: prefix support
- Create default config and rules file templates
- Add interactive prompts for credential file setup
- Support dry-run mode with detailed operation preview
- Include progress bar for operation execution
- Implement secure file permissions (0600 for credentials, 0700 for tokens)
- Add timestamped backup functionality for existing files
- Support force overwrite and interactive conflict resolution
