Open Library in the book store; podcast topic search and transcript search; Recipes (Mealie) with a shopping list synced to Tasks; Contacts linked to Mail and the Calendar

- Store: Open Library search, books fetched from the Internet Archive (free editions only)
- Podcast: Podcast Index discovery by name and topic (optional key); search what is said across transcripts and play from that moment
- Recipes: browse, import from a link, add ingredients to Mealie's shopping list, mirrored two ways with a Shopping list in Tasks
- Contacts: per-person address book, vCard import/export, recipient suggestions in Mail, birthdays in the Calendar

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/sw.js

@@ -1,5 +1,5 @@
 // App-shell cache only; Seafile/API traffic always goes to the network.
-const CACHE = 'hub-v50';
+const CACHE = 'hub-v51';
 const SHARE = 'hub-share'; // files shared into the app from other apps, held until the person picks a folder
 const SHELL = ['/icon.svg', '/manifest.webmanifest', '/icons/icon-192.png', '/icons/apple-touch-icon.png'];