feat(desktop): add host-scoped pricing override editor

apps/desktop/e2e-budget.json

@@ -49,6 +49,10 @@
       "tests": 5,
       "electron": "Git changes re-read on native window focus; native PTY ownership survives Session navigation and renderer replacement, while Stop/exit cross preload/main into the terminal view; Side Chat owns a Host fork lifecycle; first send reaches the Host; the composer usage entry opens a workbar whose per-Session visibility survives renderer reload."
     },
+    "settings-pricing.spec.ts": {
+      "tests": 1,
+      "electron": "the installed contextBridge, main IPC handlers and selected-Host adapter carry Pricing writes and return authoritative values through a fresh preload after renderer reload; injected services and handler fakes cannot detect missing registrations, incorrect Host scope or serialization loss. Picker, tabs and focus are covered by the existing Pricing and Settings Storybook plays"
+    },
     "settings.spec.ts": {
       "tests": 2,
       "electron": "Code Mode reads back Host settings through IPC; opening Settings commits a pending title rename to the Host, with workbar hide/restore asserted in that same Session."

apps/desktop/e2e/settings-pricing.spec.ts

@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { ensureSidebarExpanded, expect, test } from './fixtures';
+
+// Verifies the installed Pricing contextBridge, IPC handlers and selected-Host
+// adapter together. A missing handler, wrong Host scope or lost mutation/result
+// serialization is invisible to injected Storybook services and handler fakes.
+// The saved override must be readable through a new preload after renderer reload.
+// Picker, tab scope and focus contracts live in the existing Pricing stories.
+test('pricing writes cross preload and main and remain readable after renderer reload', async ({
+  window: page,
+}) => {
+  await ensureSidebarExpanded(page);
+  await page.getByRole('button', { name: '设置' }).click();
+  await page.getByRole('button', { name: '使用统计', exact: true }).click();
+  await page
+    .getByRole('navigation', { name: '使用统计视图' })
+    .getByRole('button', { name: '定价配置', exact: true })
+    .click();
+
+  const modelKey = `e2e:pricing-ipc-${Date.now()}`;
+  const pricing = { modelKey, inputUsdPer1M: 1, outputUsdPer1M: 2 };
+  const host = await page.evaluate(() => window.maka.runtimeHostProfiles.getDefaultHost());
+  await page.getByRole('button', { name: '添加定价' }).click();
+  const editor = page.getByRole('dialog', { name: '添加定价' });
+  await editor.getByRole('button', { name: '模型不在列表中？手动输入' }).click();
+  await editor.getByRole('textbox', { name: /模型键/ }).fill(modelKey);
+  await editor.getByRole('textbox', { name: /输入价格/ }).fill('1');
+  await editor.getByRole('textbox', { name: /输出价格/ }).fill('2');
+  await editor.getByRole('button', { name: '保存' }).click();
+  await expect.poll(() => page.evaluate(async ({ host, modelKey }) => {
+    const snapshot = await window.maka.settings.pricing.load(host);
+    return snapshot.entries.find((row) => row.pricing.modelKey === modelKey)?.pricing;
+  }, { host, modelKey })).toEqual(pricing);
+
+  await page.reload();
+  await expect.poll(() => page.evaluate(async ({ host, modelKey }) => {
+    const snapshot = await window.maka.settings.pricing.load(host);
+    return snapshot.entries.find((row) => row.pricing.modelKey === modelKey)?.pricing;
+  }, { host, modelKey })).toEqual(pricing);
+
+  const removed = await page.evaluate(async ({ host, modelKey }) => {
+    const base = await window.maka.settings.pricing.load(host);
+    return window.maka.settings.pricing.mutate(base, { kind: 'delete', modelKey }, host);
+  }, { host, modelKey });
+  expect(removed.kind).toBe('saved');
+  await expect.poll(() => page.evaluate(async ({ host, modelKey }) => {
+    const snapshot = await window.maka.settings.pricing.load(host);
+    return snapshot.entries.some((row) => row.pricing.modelKey === modelKey);
+  }, { host, modelKey })).toBe(false);
+});

apps/desktop/renderer-architecture.json

@@ -53,6 +53,7 @@
     "src/renderer/locales/settings-memory-copy.ts",
     "src/renderer/locales/settings-navigation-copy.ts",
     "src/renderer/locales/settings-preferences-copy.ts",
+    "src/renderer/locales/settings-pricing-copy.ts",
     "src/renderer/locales/settings-projects-copy.ts",
     "src/renderer/locales/settings-shared-copy.ts",
     "src/renderer/locales/settings-subagents-copy.ts",
@@ -480,6 +481,11 @@
         "TaskEntryServicesProvider"
       ]
     },
+    "src/renderer/features/usage/index.ts": {
+      "composition": [
+        "UsagePricingServicesProvider"
+      ]
+    },
     "src/renderer/features/workbar/index.ts": {
       "appShell": [
         "WorkbarHost",
@@ -1282,6 +1288,15 @@
         "actionFactories": [],
         "dependencyPaths": {}
       },
+      "src/renderer/locales/settings-pricing-copy.ts": {
+        "bridgePaths": {},
+        "environmentCapabilities": {},
+        "hookCalls": {},
+        "lifecycleMethods": {},
+        "unresolvedDependencies": 0,
+        "actionFactories": [],
+        "dependencyPaths": {}
+      },
       "src/renderer/locales/settings-projects-copy.ts": {
         "bridgePaths": {},
         "environmentCapabilities": {},

apps/desktop/src/main/__tests__/desktop-session-projection.test.ts

@@ -247,7 +247,6 @@ test('projects only present Usage Session ids into the Desktop host namespace',
     byProvider: [],
     byModel: [],
     byTool: [],
-    pricing: [],
     provenance: EMPTY_USAGE_PROVENANCE,
   };