feat: milestone 5a — frontend plugin host, contribution lifecycle, UI shell
- Contribution Registry: ListByPoint, idempotent Register (Unregister-before-add)
- Flat ContributionSummary types for frontend (no nested .item.)
- Sidebar.svelte: items from ContributionRegistry, sort by position, error boundary
- ViewContainer.svelte: declarative placeholder host with error boundary
- PluginManager.svelte: settings panels from registry, knoppka only with settingsPanel
- PluginCard.svelte: settingsPanels prop, disabled state for Settings button
- Error boundary: ViewContainer + PluginManager catch errors, shell stays stable
- ReloadPlugins: Unregister before Register contributions (no duplicates)
- Smoke: -test-contributions flag, enable/disable/reload lifecycle verification
- Build: global_update() — pull all repos, build official plugins, install to desktop
mirivlad
86eeadd2a9