Summary

Document the configuration strategies framework at include/kcenon/logger/core/strategies/ which provides pluggable configuration strategies for different deployment scenarios.

Parent Issue

Part of: [EPIC] docs: Address documentation gaps across all ecosystem systems (kcenon/common_system#325)

Background (Why)

logger_system includes a strategy pattern implementation for flexible configuration across different environments (development, staging, production). This framework allows the logger to automatically adjust its behavior based on deployment context, but it's completely undocumented.

Source files:

• include/kcenon/logger/core/strategies/composite_strategy.h — Combines multiple strategies
• include/kcenon/logger/core/strategies/config_strategy_interface.h — Strategy abstraction
• include/kcenon/logger/core/strategies/deployment_strategy.h — Deployment-specific config
• include/kcenon/logger/core/strategies/environment_strategy.h — Environment-based config
• include/kcenon/logger/core/strategies/performance_strategy.h — Performance-optimized config

Scope (What)

Create documentation covering:

1. Strategy Pattern Overview

• Why strategy pattern for logger configuration
• How strategies compose via composite pattern
• Strategy evaluation order and priority

2. Strategy Interface (config_strategy_interface.h)

• Base interface for all strategies
• How to implement custom strategies
• Strategy lifecycle (create → configure → apply → update)

3. Built-in Strategies

Deployment Strategy (deployment_strategy.h)

• Pre-configured settings for deployment targets
• Cloud vs on-premise vs edge configurations
• Container-specific adjustments (Docker, K8s)

Environment Strategy (environment_strategy.h)

• Development: verbose logging, console output, no rotation
• Staging: moderate logging, file output, basic rotation
• Production: error-only, structured output, aggressive rotation
• Custom environments

Performance Strategy (performance_strategy.h)

• Async vs sync mode selection based on throughput needs
• Buffer size optimization
• Writer selection for performance targets
• Batch size and flush interval tuning

4. Composite Strategy (composite_strategy.h)

• How to combine multiple strategies
• Conflict resolution between strategies
• Priority ordering

5. Usage Examples

auto config = composite_strategy::create()
    .add(environment_strategy::production())
    .add(performance_strategy::high_throughput())
    .add(deployment_strategy::kubernetes())
    .build();

auto logger = logger_builder::create()
    .with_strategy(config)
    .build();

Acceptance Criteria

• Strategy interface documented
• All 4 built-in strategies documented
• Composite strategy composition explained
• Usage examples for common deployment scenarios
• Custom strategy implementation guide
• Conflict resolution rules documented