Migrate drone_gimbal_arm study as reference implementation for Phase 1.3 logging system. Changes: - Replace all print() statements with logger calls throughout run_optimization.py - Add logger.trial_start() and logger.trial_complete() for structured trial logging - Use logger.trial_failed() for error handling with full tracebacks - Add logger.study_start() and logger.study_complete() for lifecycle logging - Replace constraint violation prints with logger.warning() - Create comprehensive LOGGING_MIGRATION_GUIDE.md with before/after examples Benefits: - Color-coded console output (green INFO, yellow WARNING, red ERROR) - Automatic file logging to 2_results/optimization.log with rotation (50MB, 3 backups) - Structured format with timestamps for dashboard integration - Professional error handling with exc_info=True - Reference implementation for migrating remaining studies 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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