fix(inference): tighten the revenue chart header

Shorten cached pricing labels in the plot subtitle and move the desktop chart action group upward to reduce wrapping.

中文：缩短 plot subtitle 中的缓存价格标签，并将桌面端图表操作按钮组上移，减少标题区域换行。

Author: Oseltamivir

packages/app/cypress/e2e/inference-chart.cy.ts

@@ -119,10 +119,7 @@ describe('Inference Chart', () => {
     cy.get('[data-testid="chart-figure"]')
       .first()
       .find('[data-testid="token-revenue-subtitle-prices"]')
-      .should(
-        'have.text',
-        'Uncached input $1.122/M tok · Cached input $0.08/M tok · Output $3.366/M tok',
-      )
+      .should('have.text', 'Uncached $1.122/M tok · Cached $0.08/M tok · Output $3.366/M tok')
       .then(($prices) => {
         const subtitle = $prices.parent().text();
         expect(subtitle.indexOf($prices.text())).to.be.lessThan(subtitle.indexOf('Updated:'));
@@ -192,7 +189,7 @@ describe('Inference Chart', () => {
       .find('[data-testid="token-revenue-subtitle-prices"]')
       .should(
         'have.text',
-        '未缓存输入 $1.122/百万 token · 缓存输入 $0.08/百万 token · 输出 $3.366/百万 token',
+        '未缓存 $1.122/百万 token · 缓存 $0.08/百万 token · 输出 $3.366/百万 token',
       )
       .then(($prices) => {
         const subtitle = $prices.parent().text();

packages/app/src/components/inference/ui/ChartDisplay.tsx

@@ -113,7 +113,7 @@ const STRINGS = {
     revenuePrices: (input: string, cached: string | null, output: string) =>
       cached === null
         ? `Input $${input}/M tok · Output $${output}/M tok`
-        : `Uncached input $${input}/M tok · Cached input $${cached}/M tok · Output $${output}/M tok`,
+        : `Uncached $${input}/M tok · Cached $${cached}/M tok · Output $${output}/M tok`,
     updated: 'Updated:',
     e2eNormIntvtyDisclaimer:
       'E2E Normalized Interactivity requires persisted per-request traces, so unofficial-run overlays are unavailable for this experimental view.',
@@ -135,7 +135,7 @@ const STRINGS = {
     revenuePrices: (input: string, cached: string | null, output: string) =>
       cached === null
         ? `输入 $${input}/百万 token · 输出 $${output}/百万 token`
-        : `未缓存输入 $${input}/百万 token · 缓存输入 $${cached}/百万 token · 输出 $${output}/百万 token`,
+        : `未缓存 $${input}/百万 token · 缓存 $${cached}/百万 token · 输出 $${output}/百万 token`,
     updated: '更新时间：',
     e2eNormIntvtyDisclaimer:
       '端到端归一化交互性需要持久化的逐请求 trace 数据，因此该实验性视图不支持非官方运行覆盖。',
@@ -845,6 +845,7 @@ export default function ChartDisplay({ embedded = false }: { embedded?: boolean
                 <figure data-testid="chart-figure" className="relative rounded-lg">
                   <ChartButtons
                     chartId={`chart-${graphIndex}`}
+                    className="md:top-4"
                     analyticsPrefix={
                       isTimelineMode
                         ? 'gpu_timeseries'