remove deprecated API modules and example scripts; update core modules
(agents, providers, tools, platform adapters, utils), dashboard package
and components, and unit tests.
- ToolSet.add() now protects active tools from inactive overrides
- Add missing _has_meaningful_content() method in RespondStage
- Remove is_local=True from ExecuteShellTool (no longer supported)
- Fix ToolSet() missing namespace argument in get_full_tool_set()
- Rewrite tests to match new tool architecture (cron_tools, func_tool_manager, tool_conflict_resolution)
* perf: replace cron tools with FutureTaskTool for improved task management
* feat: enhance FutureTaskTool with edit functionality and improve descriptions
* feat: add edit functionality for cron jobs and update related UI components