feat(quota): refine quota actions and usage metrics layout

tests/agent-loading-ui.cjs

@@ -0,0 +1,59 @@
+// Run Vite on port 1421, then node tests/agent-loading-ui.cjs.
+const { chromium } = require(process.env.PLAYWRIGHT_MODULE || 'playwright');
+const assert = require('node:assert/strict');
+
+(async () => {
+  const browser = await chromium.launch({ channel: 'msedge', headless: true });
+  try {
+    const page = await browser.newPage({ viewport: { width: 1280, height: 900 } });
+    const errors = [];
+    page.on('pageerror', error => errors.push(String(error)));
+    await page.goto('http://127.0.0.1:1421/tests/fixtures/agent-backups.html?reset-selections');
+    const picker = page.locator('.agent-model-trigger');
+    await page.waitForFunction(() => document.querySelector('.agent-model-trigger strong')?.textContent === 'gpt-one');
+    const rows = await page.locator('.agent-list-items').innerText();
+    await page.evaluate(() => {
+      window.fixtureDeferredCommands = ['get_agent_config_statuses', 'get_agent_models'];
+      window.fixtureRemount();
+    });
+    await page.waitForFunction(() => window.fixturePendingCommands?.length === 2);
+    // Both requests are still pending: the previous data is already interactive.
+    assert.equal(await page.locator('.agent-list-items').innerText(), rows);
+    assert.equal(await picker.locator('strong').textContent(), 'gpt-one');
+    assert.equal(await page.getByRole('button', { name: '重新检测', exact: true }).isEnabled(), true);
+    await picker.click();
+    await page.getByRole('option', { name: 'gpt-two' }).click();
+    await page.evaluate(() => {
+      window.fixtureDeferredCommands = [];
+      window.fixturePendingCommands.splice(0).forEach(item => item.resolve());
+    });
+    await page.waitForFunction(() => document.querySelector('.agent-model-trigger strong')?.textContent === 'gpt-two');
+
+    // Failed background refreshes preserve usable data and surface their errors.
+    await page.evaluate(() => {
+      window.fixtureFailedCommands = ['get_agent_config_statuses', 'get_agent_models'];
+      window.fixtureRemount();
+    });
+    await page.getByText(/模拟后台刷新失败/).first().waitFor();
+    assert.equal(await picker.locator('strong').textContent(), 'gpt-two');
+    assert.equal(await page.locator('.agent-list-items').innerText(), rows);
+
+    // Explicit detection still runs, with a busy indicator and retained rows.
+    await page.evaluate(() => {
+      window.fixtureFailedCommands = [];
+      window.fixtureDeferredCommands = ['refresh_agent_config_statuses'];
+    });
+    const refresh = page.getByRole('button', { name: '重新检测', exact: true });
+    await refresh.click();
+    await page.waitForFunction(() => window.fixturePendingCommands?.length === 1);
+    assert.equal(await refresh.isDisabled(), true);
+    assert.equal(await page.locator('.agent-list-items').innerText(), rows);
+    await page.evaluate(() => {
+      window.fixtureDeferredCommands = [];
+      window.fixturePendingCommands.splice(0).forEach(item => item.resolve());
+    });
+    await page.waitForFunction(() => !document.querySelector('.agent-client-list-heading button').disabled);
+    assert.deepEqual(errors, []);
+    console.log('PASS: cached page return, nonblocking revalidation, preserved selection, failed refresh and explicit detection');
+  } finally { await browser.close(); }
+})().catch(error => { console.error(error); process.exit(1); });

tests/fixtures/agent-backups.tsx

@@ -34,6 +34,12 @@ let embedded=params.has('embedded');
 (window as any).fixtureSessionIds=Array.from({length:61},(_,index)=>`session-${index+1}`);
 mockIPC(async (cmd,args:any) => {
  calls.push({cmd,args});
+ if((window as any).fixtureDeferredCommands?.includes(cmd)) {
+   await new Promise<void>(resolve=>{
+     ((window as any).fixturePendingCommands??=[]).push({cmd,resolve});
+   });
+ }
+ if((window as any).fixtureFailedCommands?.includes(cmd))throw new Error('模拟后台刷新失败');
  if(cmd==='plugin:event|listen') return 1;
  if(cmd==='plugin:event|unlisten'||cmd==='set_app_locale') return null;
  if(cmd==='get_agent_config_statuses'||cmd==='refresh_agent_config_statuses') {