Implement Android Home activity and HTTPS synchronization (#97)

crates/storage/tests/mobile_totp.rs

@@ -274,11 +274,30 @@ fn totp_cache_reuses_ciphertext_hashes_and_removes_deleted_entries() -> TestResu
     );
 
     repository.remove_entry(&EntryPath::parse("otp/alice")?)?;
+    assert!(
+        service
+            .cached_page(&BTreeSet::new(), &cache)
+            .expect("created cache")
+            .rows()
+            .iter()
+            .all(|row| row.path() != "otp/alice")
+    );
     let deleted = MobileTotpOperation::default();
     let mut deleted_secrets = CountingSecrets::all(&fixture);
     let deleted_page =
         service.discover(&BTreeSet::new(), &mut deleted_secrets, &cache, &deleted)?;
     assert_eq!(deleted_secrets.requests, 0);
+    write_plaintext(&repository, &keys, "team-a", b"changed encrypted entry\n")?;
+    let retained = service
+        .cached_page(&BTreeSet::new(), &cache)
+        .expect("created cache");
+    assert!(retained.rows().iter().all(|row| row.path() != "team-a"));
+    assert!(
+        retained
+            .rows()
+            .iter()
+            .any(|row| row.path() == "team-a/shared")
+    );
     assert!(
         deleted_page
             .rows()