Remove Activity and the notification system

src/lib/ui/components/PluginGithubImport.svelte

@@ -6,7 +6,6 @@
     import Card from './primitives/Card.svelte';
     import Button from './primitives/Button.svelte';
     import Badge from './primitives/Badge.svelte';
-    import { toast } from '$ui/toast.js';
 
     let { pluginId, targetPath, disabled = false, busy = $bindable(false), onimport }: {
         pluginId?: number; targetPath?: string; disabled?: boolean; busy?: boolean; onimport?: (result: { pluginId: number; betaUrl: string; alreadyImported: boolean }) => void | Promise<void>;
@@ -71,12 +70,12 @@
             });
             const body = await response.json();
             if (!response.ok) throw new Error(body.error ?? 'Import failed.');
-            if (!active) { toast('Plugin imported. Review its version when ready.', { variant: 'success', href: `/plugins/${body.pluginId}` }); return; }
+            if (!active) return;
             success = body;
             await onimport?.(body);
             if (startBeta && window.location.pathname === startPath) await goto(body.betaUrl);
             else if (pluginId) await checkUpdates();
-        } catch (e) { error = (e as Error).message; if (!active) toast(`Plugin import failed: ${error}`, { variant: 'danger', href: '/plugins' }); }
+        } catch (e) { error = (e as Error).message; }
         finally { busy = false; }
     }
 </script>