logging and presenting cpu/memory usage when app is force-closed (#1894)

closes #1803 











<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Detects when the app was force-closed and shows a dialog with the last
known CPU and memory usage. Adds background performance monitoring so we
can surface metrics on next launch.

- **New Features**
- Start a performance monitor at app launch; captures process and system
memory/CPU every 30s and on quit.
- Persist metrics in settings.lastKnownPerformance and track
settings.isRunning to detect improper shutdowns.
- On startup, if the previous run was force-closed, send a
"force-close-detected" IPC event after the window loads.
  - Add ForceCloseDialog to display timestamped process/system metrics.
- Whitelist the new IPC channel in preload and listen for it on the home
page.

<sup>Written for commit 0543cdc234da7f94024e8506749aaa9ca36ef916.
Summary will update automatically on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

e2e-tests/performance_monitor.spec.ts

@@ -0,0 +1,150 @@
+import { expect } from "@playwright/test";
+import { Timeout, testWithConfig } from "./helpers/test_helper";
+import * as fs from "node:fs";
+import * as path from "node:path";
+
+testWithConfig({
+  preLaunchHook: async ({ userDataDir }) => {
+    // Set up a force-close scenario by creating settings with isRunning: true
+    // and lastKnownPerformance data
+    const settingsPath = path.join(userDataDir, "user-settings.json");
+    const settings = {
+      hasRunBefore: true,
+      isRunning: true, // Simulate force-close
+      enableAutoUpdate: false,
+      releaseChannel: "stable",
+      lastKnownPerformance: {
+        timestamp: Date.now() - 5000, // 5 seconds ago
+        memoryUsageMB: 256,
+        cpuUsagePercent: 45.5,
+        systemMemoryUsageMB: 8192,
+        systemMemoryTotalMB: 16384,
+        systemMemoryPercent: 50.0,
+        systemCpuPercent: 35.2,
+      },
+    };
+
+    fs.mkdirSync(userDataDir, { recursive: true });
+    fs.writeFileSync(settingsPath, JSON.stringify(settings, null, 2));
+  },
+})(
+  "force-close detection shows dialog with performance data",
+  async ({ po }) => {
+    // Wait for the home page to be visible first
+    await expect(po.getHomeChatInputContainer()).toBeVisible({
+      timeout: Timeout.LONG,
+    });
+
+    // Check if the force-close dialog is visible by looking for the heading
+    await expect(
+      po.page.getByRole("heading", { name: "Force Close Detected" }),
+    ).toBeVisible({ timeout: Timeout.MEDIUM });
+
+    // Verify the warning message
+    await expect(
+      po.page.getByText(
+        "The app was not closed properly the last time it was running",
+      ),
+    ).toBeVisible();
+
+    // Verify performance data is displayed
+    await expect(po.page.getByText("Last Known State:")).toBeVisible();
+
+    // Check Process Metrics section
+    await expect(po.page.getByText("Process Metrics")).toBeVisible();
+    await expect(po.page.getByText("256 MB")).toBeVisible();
+    await expect(po.page.getByText("45.5%")).toBeVisible();
+
+    // Check System Metrics section
+    await expect(po.page.getByText("System Metrics")).toBeVisible();
+    await expect(po.page.getByText("8192 / 16384 MB")).toBeVisible();
+    await expect(po.page.getByText("35.2%")).toBeVisible();
+
+    // Close the dialog
+    await po.page.getByRole("button", { name: "OK" }).click();
+
+    // Verify dialog is closed by checking the heading is no longer visible
+    await expect(
+      po.page.getByRole("heading", { name: "Force Close Detected" }),
+    ).not.toBeVisible();
+  },
+);
+
+testWithConfig({
+  preLaunchHook: async ({ userDataDir }) => {
+    // Set up scenario without force-close (proper shutdown)
+    const settingsPath = path.join(userDataDir, "user-settings.json");
+    const settings = {
+      hasRunBefore: true,
+      isRunning: false, // Proper shutdown - no force-close
+      enableAutoUpdate: false,
+      releaseChannel: "stable",
+      lastKnownPerformance: {
+        timestamp: Date.now() - 5000,
+        memoryUsageMB: 256,
+        cpuUsagePercent: 45.5,
+        systemMemoryUsageMB: 8192,
+        systemMemoryTotalMB: 16384,
+        systemMemoryPercent: 50.0,
+        systemCpuPercent: 35.2,
+      },
+    };
+
+    fs.mkdirSync(userDataDir, { recursive: true });
+    fs.writeFileSync(settingsPath, JSON.stringify(settings, null, 2));
+  },
+})("no force-close dialog when app was properly shut down", async ({ po }) => {
+  // Verify the home page loaded normally
+  await expect(po.getHomeChatInputContainer()).toBeVisible({
+    timeout: Timeout.LONG,
+  });
+
+  // Verify that the force-close dialog is NOT shown
+  await expect(
+    po.page.getByRole("heading", { name: "Force Close Detected" }),
+  ).not.toBeVisible();
+});
+
+testWithConfig({})(
+  "performance information is being captured during normal operation",
+  async ({ po, electronApp }) => {
+    // Wait for the app to load
+    await expect(po.getHomeChatInputContainer()).toBeVisible({
+      timeout: Timeout.LONG,
+    });
+
+    // Get the user data directory
+    const userDataDir = (electronApp as any).$dyadUserDataDir;
+    const settingsPath = path.join(userDataDir, "user-settings.json");
+
+    // Wait a bit to allow performance monitoring to capture at least one data point
+    // Performance monitoring runs every 30 seconds, but we'll wait 35 seconds to be safe
+    await po.page.waitForTimeout(35000);
+
+    // Read the settings file
+    const settingsContent = fs.readFileSync(settingsPath, "utf-8");
+    const settings = JSON.parse(settingsContent);
+
+    // Verify that lastKnownPerformance exists and has all required fields
+    expect(settings.lastKnownPerformance).toBeDefined();
+    expect(settings.lastKnownPerformance.timestamp).toBeGreaterThan(0);
+    expect(settings.lastKnownPerformance.memoryUsageMB).toBeGreaterThan(0);
+    expect(
+      settings.lastKnownPerformance.cpuUsagePercent,
+    ).toBeGreaterThanOrEqual(0);
+    expect(settings.lastKnownPerformance.systemMemoryUsageMB).toBeGreaterThan(
+      0,
+    );
+    expect(settings.lastKnownPerformance.systemMemoryTotalMB).toBeGreaterThan(
+      0,
+    );
+    expect(
+      settings.lastKnownPerformance.systemCpuPercent,
+    ).toBeGreaterThanOrEqual(0);
+
+    // Verify the timestamp is recent (within the last minute)
+    const now = Date.now();
+    const timeDiff = now - settings.lastKnownPerformance.timestamp;
+    expect(timeDiff).toBeLessThan(60000); // Less than 1 minute old
+  },
+);