Remove daemon mode references and unused config fields

The --daemon flag, BackupInterval, FullScanInterval, MinTimeBetweenRun
config fields, and DirtyPath model were placeholders for a never-shipped
daemon mode and have been removed. Daemon mode is out of scope for 1.0.

internal/vaultik/info.go

@@ -66,18 +66,6 @@ func (v *Vaultik) ShowInfo() error {
 	}
 	fmt.Println()
 
-	// Daemon Settings (if applicable)
-	if v.Config.BackupInterval > 0 || v.Config.MinTimeBetweenRun > 0 {
-		fmt.Printf("=== Daemon Settings ===\n")
-		if v.Config.BackupInterval > 0 {
-			fmt.Printf("Backup Interval: %s\n", v.Config.BackupInterval)
-		}
-		if v.Config.MinTimeBetweenRun > 0 {
-			fmt.Printf("Minimum Time:    %s\n", v.Config.MinTimeBetweenRun)
-		}
-		fmt.Println()
-	}
-
 	// Local Database
 	fmt.Printf("=== Local Database ===\n")
 	fmt.Printf("Index Path:      %s\n", v.Config.IndexPath)