Introduces a new SSE-based plugin installation API for real-time progress updates and adds frontend support for selecting download mirrors, especially for GitHub-based plugins. Refactors backend plugin directory handling, improves logging, and updates the frontend to use the new API with user-selectable mirrors and progress feedback.
Implemented plugin store API endpoints and types in the backend, including mock data and handlers for listing, detail, and install actions. Added plugin store page, card component, and related logic to the frontend, with navigation and categorized browsing. Updated plugin manager controller and site config to support the new plugin store functionality.
Introduces a persistent plugins.json config to track enabled/disabled status for plugins, updates the plugin manager to respect this config when loading plugins, and adds API and frontend support for toggling plugin status. The backend now reports plugin status as 'active', 'stopped', or 'disabled', and the frontend displays these states with appropriate labels. Also updates the built-in plugin package.json with author info.
Implemented backend API and router for plugin management (list, reload, enable/disable, uninstall) and exposed corresponding frontend controller and dashboard page. Updated navigation and site config to include plugin management. Refactored plugin manager adapter for public methods and improved plugin metadata handling.
