Show virtual parallel_fetch in UI and TUI (#173)

Virtuals carry a `parallel_fetch` flag in the v2 API, but the UI type omits it and neither the UI nor the TUI displays it, so the setting is invisible to operators.

- add `parallel_fetch` to the TS `Virtual` type
- add a Parallel column with a yellow badge to the UI virtuals table
- use one `selected` lookup for the virtual detail panel
- add a parallel column to the TUI virtuals list, padding the member count (`%3d members`) so columns align

Reviewed-on: #173
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>

internal/tui/render.go

@@ -109,8 +109,12 @@ func (m *model) viewVirtualsList() string {
 	}
 
 	for i, v := range m.virtuals {
-		line := fmt.Sprintf("  %-25s %-12s %d members  %s",
-			v.Name, v.PackageType, len(v.Members), v.Description)
+		parallel := "-"
+		if v.ParallelFetch {
+			parallel = "parallel"
+		}
+		line := fmt.Sprintf("  %-25s %-12s %3d members  %-8s  %s",
+			v.Name, v.PackageType, len(v.Members), parallel, v.Description)
 		if i == m.cursor {
 			sb.WriteString(selStyle.Render(line))
 		} else {