SSH connection status indicators

- Add Connected bool field to vfs.Entry and RemoteMount
- Track connection status in sshState.connectedHosts
- Show status icon (connected/disconnected) in pane header when browsing remote host
- Async SSH connection test with cancel support for Add Host dialog
- Colored labels and styled help text in SSH dialogs
- Confirmation dialog when deleting manually-added SSH hosts

cmd/vcom/main.go

@@ -3,7 +3,10 @@ package main
 import (
 	"flag"
 	"fmt"
+	"log"
 	"os"
+	"path/filepath"
+	"time"
 
 	tea "github.com/charmbracelet/bubbletea"
 
@@ -21,15 +24,34 @@ func main() {
 		os.Exit(1)
 	}
 
+	// Set up debug logging to a file in /tmp
+	logDir := filepath.Join(os.TempDir(), "vcom-logs")
+	if err := os.MkdirAll(logDir, 0755); err != nil {
+		fmt.Fprintf(os.Stderr, "warning: cannot create log dir %s: %v\n", logDir, err)
+	}
+	logPath := filepath.Join(logDir, fmt.Sprintf("vcom-%s.log", time.Now().Format("2006-01-02_15-04-05")))
+	f, err := tea.LogToFile(logPath, "")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "warning: cannot set up log file %s: %v\n", logPath, err)
+	} else {
+		defer f.Close()
+		log.Printf("[INIT] Logging to %s", logPath)
+		log.Printf("[INIT] vcom starting — config: %s, resolved: %s", *configPath, resolvedPath)
+	}
+
 	model, err := ui.NewModel(cfg, resolvedPath)
 	if err != nil {
+		log.Printf("[FATAL] startup error: %v", err)
 		fmt.Fprintf(os.Stderr, "startup error: %v\n", err)
 		os.Exit(1)
 	}
 
 	program := tea.NewProgram(model, tea.WithAltScreen(), tea.WithMouseCellMotion())
+	log.Printf("[INIT] Bubble Tea program started")
 	if _, err := program.Run(); err != nil {
+		log.Printf("[FATAL] runtime error: %v", err)
 		fmt.Fprintf(os.Stderr, "runtime error: %v\n", err)
 		os.Exit(1)
 	}
+	log.Printf("[INIT] vcom exited cleanly")
 }