Cache TOTP discovery and report progress (#74)

crates/storage/tests/tree_mutations.rs

@@ -320,7 +320,7 @@ fn entry_collisions_require_confirmation_unless_forced() -> TestResult {
 }
 
 #[test]
-fn mutation_rejects_ambiguous_sources_and_same_object_targets() -> TestResult {
+fn mutation_prefers_an_entry_over_its_same_named_directory() -> TestResult {
     let fixture = FixtureSet::load()?;
     let store = fixture.materialize_store("basic")?;
     fs::create_dir(store.path().join("email/personal"))?;
@@ -329,22 +329,26 @@ fn mutation_rejects_ambiguous_sources_and_same_object_targets() -> TestResult {
     let mut provider = Secrets::all(&fixture);
     let mutator = TreeMutator::new(&repository, &keys);
 
-    assert!(matches!(
-        mutator.copy(
-            &CopyRequest {
-                source: "email/personal".into(),
-                destination: "elsewhere".into(),
-                force: false,
-            },
-            OverwriteDecision::Allow,
-            None,
+    mutator.copy(
+        &CopyRequest {
+            source: "email/personal".into(),
+            destination: "elsewhere".into(),
+            force: false,
+        },
+        OverwriteDecision::Allow,
+        None,
+        &mut provider,
+        &mut Committer::default(),
+    )?;
+    assert!(store.path().join("email/personal").is_dir());
+    assert_eq!(
+        keys.decrypt(
+            &repository.read_entry(&EntryPath::parse("elsewhere")?)?,
             &mut provider,
-            &mut Committer::default()
-        ),
-        Err(MutationError::Repository(
-            ironstorage::repository::RepositoryError::AmbiguousPath { .. }
-        ))
-    ));
+        )?
+        .expose(),
+        fixture.read("expected/basic/email/personal.txt")?
+    );
     assert!(matches!(
         mutator.copy(
             &CopyRequest {