Implement Android TOTP cached discovery and search (#110)

docs/android/otp.md

@@ -3,9 +3,10 @@
 Issue [#107](https://git.rfc1437.de/hugo/IronStorage/issues/107) connects the TOTP
 destination to the storage-owned discovery catalog. Opening the list reads cached
 metadata without decrypting entries. Select a row, then Unlock to display its
-issuer, account, grouped code, countdown and progress. Refresh TOTP catalog is an
-explicit authenticated discovery action; the progress/search workflow belongs
-to [#110](https://git.rfc1437.de/hugo/IronStorage/issues/110).
+issuer, account, grouped code, countdown and progress. Refresh TOTP catalog reuses
+unchanged ciphertext while locked and authenticates for new or changed entries;
+[discovery, progress and cached search](totp-discovery.md) implement
+[#110](https://git.rfc1437.de/hugo/IronStorage/issues/110).
 
 The normal entry viewer and TOTP detail use the same code component and native
 viewer controller. Decryption, creation and editing reconcile the catalog in