Resolved merge conflicts in:
- func_tool_manager.py: kept origin version (full implementation)
- astr_main_agent*.py: kept HEAD version (complete refactor)
- cron_tools.py: kept HEAD version (with get_all_tools)
- config/default.py: kept HEAD version (DEFAULT_WEB_SEARCH_PROVIDER)
- dashboard/*.vue: kept HEAD version
- web_searcher engines: kept HEAD version
- Added new tools: knowledge_base_tools, message_tools, registry, web_search_tools
* ci: remove Electron desktop build from release pipeline
* chore: remove electron desktop and switch to tauri release trigger
* ci: remove desktop workflow dispatch trigger
* refactor: migrate data paths to astrbot_path helpers
* fix: point desktop update prompt to AstrBot-desktop releases