feat(pwa): pre-install naming, install UX, and manifest shortcuts (#554)

* feat(web-pwa): add dynamic manifest endpoint with blob fallback

* feat(ui-pwa): add install prompt and manifest sync hooks

* feat(settings): add web-only preinstall app name preference

* fix(web-pwa): scope recent shortcuts to active project sessions

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Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/desktop.ts

@@ -110,6 +110,7 @@ export type DesktopSettings = {
   zenModel?: string;
   gitProviderId?: string;
   gitModelId?: string;
+  pwaAppName?: string;
   toolCallExpansion?: 'collapsed' | 'activity' | 'detailed';
   userMessageRenderingMode?: 'markdown' | 'plain';
   stickyUserHeader?: boolean;