Add SAA DMI editor to Tools page

Adds a new card to the web UI Tools page for reading and editing DMI
fields via SAA (In-Band). Reads current DMI configuration with GetDmiInfo,
displays all fields as an editable table, and applies only the changed
fields via EditDmiInfo + ChangeDmiInfo. Backs up the original DMI file to
dmi-backups/ before any write, making it available in the support bundle
for rollback. Also adds "saa" to the standard tool check list.

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

audit/internal/webui/task_runner.go

@@ -382,6 +382,12 @@ func executeTaskWithOptions(opts *HandlerOptions, t *Task, j *jobState, ctx cont
 			break
 		}
 		err = runNVMeFormatTask(ctx, j, t.params.Device, t.params.LBAF)
+	case "saa-dmi-write":
+		if len(t.params.SAADmiChanges) == 0 {
+			err = fmt.Errorf("no changes provided")
+			break
+		}
+		err = runSAADMIWriteTask(ctx, j, opts.ExportDir, t.params)
 	default:
 		j.append("ERROR: unknown target: " + t.Target)
 		j.finish("unknown target")