Show active transfer count, add SFTP retry resilience, and fix config tab refresh

- Use rclone transferring array to show only active transfers instead of
  cumulative count; zero out speed when no transfers are active
- Add SFTP retry/timeout flags to rclone mount for flaky Tailscale tunnels
- Skip auto-refresh on config tab to prevent editor resets

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/rclone/mount.rs

@@ -70,6 +70,16 @@ pub fn build_mount_args(config: &Config, share: &ShareConfig, rc_port: u16) -> V
     args.push("--transfers".into());
     args.push(config.writeback.transfers.to_string());
 
+    // SFTP connection resilience: increase retries for flaky tunnels (Tailscale/WireGuard)
+    args.push("--retries".into());
+    args.push("10".into());
+    args.push("--low-level-retries".into());
+    args.push("20".into());
+    args.push("--retries-sleep".into());
+    args.push("1s".into());
+    args.push("--contimeout".into());
+    args.push("30s".into());
+
     // Bandwidth limits (only add flag if at least one direction is limited)
     let bw = format_bwlimit(&config.bandwidth.limit_up, &config.bandwidth.limit_down);
     if bw != "0" {

src/rclone/rc.rs

@@ -16,6 +16,9 @@ pub struct CoreStats {
     pub errors: u64,
     #[serde(rename = "totalBytes")]
     pub total_bytes: Option<u64>,
+    /// Currently active transfers (present only when transfers are running).
+    #[serde(default)]
+    pub transferring: Vec<serde_json::Value>,
 }
 
 /// Response from `vfs/stats`.
@@ -233,5 +236,22 @@ mod tests {
         assert_eq!(stats.bytes, u64::MAX);
         assert_eq!(stats.transfers, 1000000);
         assert_eq!(stats.errors, 999);
+        assert!(stats.transferring.is_empty());
+    }
+
+    #[test]
+    fn test_core_stats_with_active_transferring() {
+        let json = r#"{
+            "bytes": 1048576,
+            "speed": 524288.0,
+            "transfers": 5,
+            "errors": 0,
+            "transferring": [
+                {"name": "file1.jpg", "size": 1024, "bytes": 512},
+                {"name": "file2.jpg", "size": 2048, "bytes": 1024}
+            ]
+        }"#;
+        let stats: CoreStats = serde_json::from_str(json).unwrap();
+        assert_eq!(stats.transferring.len(), 2);
     }
 }

src/supervisor.rs

@@ -732,8 +732,9 @@ fn update_status(
 
             // Fetch core stats (speed, transfers)
             if let Ok(core) = rc::core_stats(mc.rc_port) {
-                ss.speed = core.speed;
-                ss.transfers = core.transfers;
+                let active = core.transferring.len() as u64;
+                ss.speed = if active > 0 { core.speed } else { 0.0 };
+                ss.transfers = active;
                 ss.errors = core.errors;
             }
         }

templates/web/layout.html

@@ -25,7 +25,7 @@
       if (this._timer) { clearInterval(this._timer); this._timer = null; }
     },
     refreshTab() {
-      if (this.activeTab === 'dashboard' || this.activeTab === 'logs') return;
+      if (this.activeTab === 'dashboard' || this.activeTab === 'logs' || this.activeTab === 'config') return;
       let url = '/tabs/' + this.activeTab;
       if (this.activeTab === 'shares') {
         const el = document.querySelector('#tab-content [x-data]');