fix: add headroom to dashboard bar scales

control-plane/test/account-authorization.test.ts

@@ -248,10 +248,21 @@ test('operator UI exposes role-aware accounts, executive drill-through, original
   assert.match(app, /business_route_id/);
   assert.match(app, /data-operations-status|dataset\.operationsStatus/);
   assert.match(app, /data-operations-business|dataset\.operationsBusiness/);
+  assert.match(app, /function operationsDashboardRankScale/);
   assert.match(app, /operationsDashboardRankBar/);
   assert.match(app, /operations-dashboard-rank-bar/);
   assert.match(app, /sort\(\(left, right\) => Number\(right\.total/);
   assert.doesNotMatch(app, /完成率|operationsDashboardCompletionRate|operationsDashboardDays/);
+  const rankScaleSource = app.slice(
+    app.indexOf('function operationsDashboardRankScale('),
+    app.indexOf('function operationsDashboardRankBar(')
+  );
+  const rankScale = Function(`${rankScaleSource}\nreturn operationsDashboardRankScale;`)() as (maximum: number) => number;
+  assert.equal(rankScale(0), 1);
+  assert.equal(rankScale(1), 2);
+  assert.equal(rankScale(43), 50);
+  assert.equal(rankScale(100), 120);
+  assert.equal(rankScale(359), 400);
   assert.match(app, /function operationsDashboardReadableResult/);
   assert.match(app, /function operationsDashboardReadableInput/);
   assert.match(app, /原始输入/);