feat(error-handling): complete enterprise-grade error handling migration

- Add @handle_errors decorators to remaining async methods in:
  - orderbook/base.py (10 methods)
  - position_manager/operations.py (4 methods)
  - orderbook/analytics.py (3 methods)

- Update error handling patterns:
  - Remove redundant try/except blocks where decorators handle errors
  - Add structured logging with LogContext in position operations
  - Use LogMessages constants for consistent logging

- Add missing LogMessages constants:
  - CALLBACK_REGISTERED for callback registration events
  - CALLBACK_REMOVED for callback removal events
  - CLEANUP_COMPLETE for cleanup completion events

- Code quality improvements:
  - Format code with ruff (4 files reformatted)
  - Fix unused imports in analytics.py
  - All mypy type checks pass (0 errors in 72 source files)

This completes the error handling migration from ERROR_HANDLING_MIGRATION_GUIDE.md
All core components now use enterprise-grade error handling patterns with:
- Consistent decorator usage for error handling
- Structured logging with LogMessages and LogContext
- Proper error propagation and recovery
- Type-safe error handling throughout

🤖 Generated with Claude Code

Co-Authored-By: Claude <[email protected]>

Author: TexasCoding