feat(m4b): add vault selection UI, enable/disable toggle, missing-installed UI
- Add VaultSelection.svelte: first-run vault create/open/recent UI
- Update App.svelte: vault check on startup, show VaultSelection when needed
- Update PluginCard.svelte: enable/disable buttons, vault state awareness
- Update PluginManager.svelte: enable/disable handlers, missing-installed section
- Add SetCurrentVault Wails API binding
- Add RecordDesiredPlugin Wails API binding
- Record desired plugins on discovery (only when vault open)
- Fix addRecent: remove duplicate sort, clean up unused import
- Update smoke-platform.sh: enable/disable lifecycle test
- Add runEnableDisableTest: vault create/open, disable/enable, plugins.json verify
mirivlad
a6f9e85f13