Default to sole saved remote binding

main.go

@@ -2143,31 +2143,55 @@ func (u *ui) selectVaultRemoteCredentialEntry(id string) {
 }
 
 func (u *ui) selectedVaultRemoteProfile() (vault.RemoteProfile, bool) {
-	for _, profile := range u.availableRemoteProfiles() {
+	selectedID := strings.TrimSpace(u.selectedVaultRemoteProfileID)
-		if profile.ID == strings.TrimSpace(u.selectedVaultRemoteProfileID) {
+	profiles := u.availableRemoteProfiles()
+	for _, profile := range profiles {
+		if profile.ID == selectedID {
 			return profile, true
 		}
 	}
+	if selectedID == "" && len(profiles) == 1 {
+		return profiles[0], true
+	}
 	return vault.RemoteProfile{}, false
 }
 
 func (u *ui) selectedVaultRemoteCredentialEntry() (vault.Entry, bool) {
-	for _, entry := range u.availableRemoteCredentialEntries() {
+	selectedID := strings.TrimSpace(u.selectedVaultRemoteCredentialEntryID)
-		if entry.ID == strings.TrimSpace(u.selectedVaultRemoteCredentialEntryID) {
+	entries := u.availableRemoteCredentialEntries()
+	for _, entry := range entries {
+		if entry.ID == selectedID {
 			return entry, true
 		}
 	}
+	if selectedID == "" && len(entries) == 1 {
+		return entries[0], true
+	}
 	return vault.Entry{}, false
 }
 
 func (u *ui) selectedVaultRemoteBinding() (appstate.RemoteBinding, bool) {
-	if strings.TrimSpace(u.selectedVaultRemoteProfileID) == "" || strings.TrimSpace(u.selectedVaultRemoteCredentialEntryID) == "" {
+	profileID := strings.TrimSpace(u.selectedVaultRemoteProfileID)
+	entryID := strings.TrimSpace(u.selectedVaultRemoteCredentialEntryID)
+	if profileID != "" && entryID != "" {
+		return appstate.RemoteBinding{
+			LocalVaultPath:    strings.TrimSpace(u.vaultPath.Text()),
+			RemoteProfileID:   profileID,
+			CredentialEntryID: entryID,
+		}, true
+	}
+	profile, ok := u.selectedVaultRemoteProfile()
+	if !ok {
+		return appstate.RemoteBinding{}, false
+	}
+	entry, ok := u.selectedVaultRemoteCredentialEntry()
+	if !ok {
 		return appstate.RemoteBinding{}, false
 	}
 	return appstate.RemoteBinding{
 		LocalVaultPath:    strings.TrimSpace(u.vaultPath.Text()),
-		RemoteProfileID:   strings.TrimSpace(u.selectedVaultRemoteProfileID),
+		RemoteProfileID:   profile.ID,
-		CredentialEntryID: strings.TrimSpace(u.selectedVaultRemoteCredentialEntryID),
+		CredentialEntryID: entry.ID,
 	}, true
 }
 

main_test.go

@@ -1804,6 +1804,50 @@ func TestUIOpenRemoteActionUsesSelectedVaultBinding(t *testing.T) {
 	}
 }
 
+func TestUIOpenRemoteActionUsesImplicitSingleVaultBinding(t *testing.T) {
+	t.Parallel()
+
+	sess := &remoteOpenCaptureSession{
+		model: vault.Model{
+			Entries: []vault.Entry{{
+				ID:       "remote-creds-1",
+				Title:    "WebDAV Sign-In",
+				Username: "tjulian",
+				Password: "token-1",
+				Path:     []string{"Crew", "Internet"},
+			}},
+			RemoteProfiles: []vault.RemoteProfile{{
+				ID:      "family-webdav",
+				Name:    "Family Vault",
+				Backend: vault.RemoteBackendWebDAV,
+				BaseURL: "https://dav.example.invalid/remote.php/dav",
+				Path:    "files/family/keepass.kdbx",
+			}},
+		},
+	}
+
+	u := newUIWithSession("desktop", sess)
+	u.masterPassword.SetText("correct horse battery staple")
+	u.vaultPath.SetText("/vaults/family.kdbx")
+
+	if err := u.openRemoteAction(); err != nil {
+		t.Fatalf("openRemoteAction() error = %v", err)
+	}
+
+	if got := sess.remoteClient.BaseURL; got != "https://dav.example.invalid/remote.php/dav" {
+		t.Fatalf("remoteClient.BaseURL = %q, want remote.php/dav URL", got)
+	}
+	if got := sess.remoteClient.Username; got != "tjulian" {
+		t.Fatalf("remoteClient.Username = %q, want tjulian", got)
+	}
+	if got := sess.remoteClient.Password; got != "token-1" {
+		t.Fatalf("remoteClient.Password = %q, want token-1", got)
+	}
+	if got := sess.remotePath; got != "files/family/keepass.kdbx" {
+		t.Fatalf("remotePath = %q, want files/family/keepass.kdbx", got)
+	}
+}
+
 func TestUIOpenRemoteActionBootstrapsFromLocalVaultBinding(t *testing.T) {
 	t.Parallel()
 
@@ -1885,6 +1929,7 @@ func TestUIStartOpenRemoteActionUsesSelectedVaultBinding(t *testing.T) {
 	t.Parallel()
 
 	localKey := vault.MasterKey{Password: "correct horse battery staple"}
+	localPath := filepath.Join(t.TempDir(), "family.kdbx")
 	localModel := vault.Model{
 		Entries: []vault.Entry{{
 			ID:       "remote-creds-1",
@@ -1935,6 +1980,7 @@ func TestUIStartOpenRemoteActionUsesSelectedVaultBinding(t *testing.T) {
 
 	u := newUIWithSession("desktop", manager)
 	u.masterPassword.SetText(localKey.Password)
+	u.vaultPath.SetText(localPath)
 	u.selectedVaultRemoteProfileID = "family-webdav"
 	u.selectedVaultRemoteCredentialEntryID = "remote-creds-1"
 
@@ -1954,6 +2000,79 @@ func TestUIStartOpenRemoteActionUsesSelectedVaultBinding(t *testing.T) {
 	}
 }
 
+func TestUIStartOpenRemoteActionUsesImplicitSingleVaultBinding(t *testing.T) {
+	t.Parallel()
+
+	localKey := vault.MasterKey{Password: "correct horse battery staple"}
+	localPath := filepath.Join(t.TempDir(), "family.kdbx")
+	localModel := vault.Model{
+		Entries: []vault.Entry{{
+			ID:       "remote-creds-1",
+			Title:    "WebDAV Sign-In",
+			Username: "tjulian",
+			Password: "token-1",
+			Path:     []string{"Crew", "Internet"},
+		}},
+		RemoteProfiles: []vault.RemoteProfile{{
+			ID:      "family-webdav",
+			Name:    "Family Vault",
+			Backend: vault.RemoteBackendWebDAV,
+			BaseURL: "",
+			Path:    "files/family/keepass.kdbx",
+		}},
+	}
+
+	remoteModel := vault.Model{
+		Entries: []vault.Entry{{
+			ID:       "vault-console",
+			Title:    "Vault Console",
+			Username: "dannyocean",
+			Password: "token-1",
+			URL:      "https://vault.crew.example.invalid",
+			Path:     []string{"Root", "Internet"},
+		}},
+	}
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			t.Fatalf("unexpected method %s", r.Method)
+		}
+		var encoded bytes.Buffer
+		if err := vault.SaveKDBXWithKey(&encoded, remoteModel, localKey); err != nil {
+			t.Fatalf("SaveKDBXWithKey() error = %v", err)
+		}
+		w.Header().Set("ETag", "\"v1\"")
+		_, _ = w.Write(encoded.Bytes())
+	}))
+	defer server.Close()
+
+	localModel.RemoteProfiles[0].BaseURL = server.URL
+
+	manager := &session.Manager{}
+	if err := manager.Create(localModel, localKey); err != nil {
+		t.Fatalf("manager.Create() error = %v", err)
+	}
+
+	u := newUIWithSession("desktop", manager)
+	u.masterPassword.SetText(localKey.Password)
+	u.vaultPath.SetText(localPath)
+
+	u.startOpenRemoteAction()
+
+	result := waitForBackgroundResult(t, u)
+	u.applyBackgroundResult(result)
+
+	if got := u.state.ErrorMessage; got != "" {
+		t.Fatalf("ErrorMessage after apply = %q, want empty", got)
+	}
+	if got := u.remoteBaseURL.Text(); got != server.URL {
+		t.Fatalf("remoteBaseURL = %q, want server URL from implicit profile", got)
+	}
+	if got := u.remotePath.Text(); got != "files/family/keepass.kdbx" {
+		t.Fatalf("remotePath = %q, want implicit profile path", got)
+	}
+}
+
 func TestUIStartOpenRemoteActionBootstrapsFromLocalVaultBinding(t *testing.T) {
 	t.Parallel()