fix: print actual reason for failed host params collecting

previously, we didn't show any reason for failed collecting of host params in the auth form, but just a generic message

refs #441

Cargo.toml

@@ -72,7 +72,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 shellexpand = "3"
 simplelog = "0.12"
-ssh2-config = "0.7"
+ssh2-config = "0.8"
 tempfile = "3"
 thiserror = "2"
 tokio = { version = "1", features = ["rt"] }

deny.toml

@@ -33,9 +33,6 @@ ignore = [
   { id = "RUSTSEC-2026-0195", reason = "owner: termscp maintainers; review by 2026-12-31; upgrade remotefs-webdav/self_update to quick-xml >=0.41" },
   # The SSH stack requires RSA, for which RustSec reports no safe upgrade.
   { id = "RUSTSEC-2023-0071", reason = "owner: termscp maintainers; review by 2026-12-31; replace RSA dependency when upstream fix exists" },
-  # russh-keys retains an older russh-cryptovec line and cannot select the
-  # fixed 0.60.3 release without an upstream dependency update.
-  { id = "RUSTSEC-2026-0153", reason = "owner: termscp maintainers; review by 2026-12-31; upgrade remotefs-ssh/russh-keys to russh-cryptovec >=0.60.3" },
   # rustls-pemfile is retained by the WebDAV and Kubernetes clients. Both
   # versions are unmaintained but have no reported vulnerability.
   { id = "RUSTSEC-2025-0134", reason = "owner: termscp maintainers; review by 2026-12-31; upgrade WebDAV/Kubernetes clients away from rustls-pemfile" },

src/ui/activities/auth/update.rs

@@ -24,19 +24,24 @@ impl AuthActivity {
     fn update_form(&mut self, msg: FormMsg) -> Option<Msg> {
         match msg {
             FormMsg::Connect => {
-                let Ok(remote_params) = self.collect_remote_host_params() else {
+                let remote_params = match self.collect_remote_host_params() {
+                    Ok(remote_params) => remote_params,
+                    Err(err) => {
                         // mount error
-                    self.mount_error("Invalid remote params parameters");
+                        self.mount_error(format!("Invalid remote host parameters: {err}"));
                         return None;
+                    }
                 };
-
-                let Ok(host_bridge_params) = self.collect_host_bridge_params() else {
-                    // mount error
-                    self.mount_error("Invalid host bridge params parameters");
-                    return None;
-                };
-
                 debug!("Remote params: {:?}", remote_params);
+
+                let host_bridge_params = match self.collect_host_bridge_params() {
+                    Ok(host_bridge_params) => host_bridge_params,
+                    Err(err) => {
+                        // mount error
+                        self.mount_error(format!("Invalid host bridge parameters: {err}"));
+                        return None;
+                    }
+                };
                 debug!("Host bridge params: {:?}", host_bridge_params);
 
                 self.save_recent();