IvoryOS major refactoring summary

This document summarizes the major architectural changes and refactorings implemented.

Dissolving the monolithic `utils/` directory

The ivoryos/utils/ directory has been broken apart into logical, domain-specific packages to enforce a cleaner separation of concerns:

ivoryos/core/: system-level abstractions such as module_loader.py and return_handlers.py.
ivoryos/forms/: UI form generation and WTForms logic such as dynamic_forms.py.
ivoryos/models/: database models such as base.py, execution.py, script.py, user.py, and workflow.py.
ivoryos/parsers/: data serialization, JSON parsing, and type conversions.
ivoryos/runtime/: execution orchestration, control flows, and queue management such as script_runner.py and task_runner.py.
ivoryos/services/: standalone backend services such as llm_agent.py, draft_service.py, and client_proxy.py.

Legacy HTTP polling through GET /status and GET /queue has been replaced with an event-driven Socket.IO architecture.

Real-time events such as busy_status, queue_status, and pause_status are managed centrally in ivoryos/socket_handlers.py.
Frontend synchronization is handled through window.platformState in socket_handler.js, reducing server overhead and UI latency.

Community examples were removed from the core package area because they were primarily publication-oriented and not intended for core reproducibility.
Integration and unit tests in tests/ were updated to reflect the package-based import structure.