fix: quick deploy duplicate detection, logout UX, backup toggle, CSP, SSE guard, and migration

- Detect existing projects with same image on quick deploy; show conflict dialog with options
- Move logout button to sidebar header as icon-only
- Replace backup checkbox with ToggleSwitch component
- Allow unsafe-inline in CSP script-src for SvelteKit hydration
- Guard SSE connection behind isAuthenticated() check
- Add notification_url ALTER TABLE migration for existing databases
- Restore RegisterPersistentLogger on event bus

web/src/lib/api.ts

@@ -215,6 +215,7 @@ export function quickDeploy(data: {
 	tag?: string;
 	registry?: string;
 	port?: number;
+	force?: boolean;
 }): Promise<{ project: Project; status: string }> {
 	return post<{ project: Project; status: string }>('/api/deploy/quick', data);
 }