Rename project history doc and add real extension smoke test

Author: baboonzero

README.md

@@ -3,7 +3,7 @@
 Chrome extension MVP that tracks tab-level activity and shows what you worked on over the last 1 hour, 4 hours, 1 day, and 7 days.
 
 For complete project history, architecture decisions, execution timeline, built/not-built scope, and current status, see:
-- `README.markdown`
+- `project-history.md`
 
 ## MVP Features
 
@@ -41,6 +41,8 @@ For complete project history, architecture decisions, execution timeline, built/
 
 - Run unit and E2E suites together:
   - `npm run test:all`
+- Run unpacked-extension smoke test in Chromium:
+  - `npm run test:smoke:extension`
 
 Includes:
 - Unit tests for session engine transitions and IndexedDB retention/query boundaries.

package.json

@@ -8,6 +8,7 @@
     "test:e2e": "playwright test",
     "test:e2e:headed": "playwright test --headed",
     "test:e2e:ui": "playwright test --ui",
+    "test:smoke:extension": "node scripts/extension-smoke-test.mjs",
     "test:all": "npm run test:unit && npm run test:e2e"
   },
   "keywords": [],

README.markdown project-history.mdREADME.markdown renamed to project-history.md

@@ -234,7 +234,7 @@ Primary commits:
 ### Documentation and Planning
 
 - `README.md` (quick start)
-- `README.markdown` (this full build document)
+- `project-history.md` (this full build document)
 - `docs/APPROACH_AND_PLAN.md`
 - `docs/plans/2026-02-26-chrome-activity-reader-design.md`
 - `docs/plans/2026-02-26-chrome-activity-reader-implementation-plan.md`

scripts/extension-smoke-test.mjs

@@ -0,0 +1,71 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+
+import { chromium } from "playwright";
+
+async function run() {
+  const extensionPath = process.cwd();
+  const userDataDir = fs.mkdtempSync(path.join(os.tmpdir(), "car-ext-"));
+
+  const context = await chromium.launchPersistentContext(userDataDir, {
+    channel: "chromium",
+    headless: true,
+    args: [
+      `--disable-extensions-except=${extensionPath}`,
+      `--load-extension=${extensionPath}`
+    ]
+  });
+
+  try {
+    let serviceWorker = context.serviceWorkers()[0];
+    if (!serviceWorker) {
+      serviceWorker = await context.waitForEvent("serviceworker", { timeout: 15_000 });
+    }
+
+    const extensionId = new URL(serviceWorker.url()).host;
+    const dashboardUrl = `chrome-extension://${extensionId}/ui/dashboard.html`;
+    const settingsUrl = `chrome-extension://${extensionId}/ui/settings.html`;
+
+    const dashboardPage = await context.newPage();
+    await dashboardPage.goto(dashboardUrl, { waitUntil: "domcontentloaded" });
+
+    const heading = await dashboardPage.textContent("h1");
+    const timelineCount = await dashboardPage.locator("#timeline").count();
+    const status = await dashboardPage.evaluate(async () =>
+      chrome.runtime.sendMessage({ type: "get-runtime-status" })
+    );
+
+    const settingsPage = await context.newPage();
+    await settingsPage.goto(settingsUrl, { waitUntil: "domcontentloaded" });
+    const settingsHeading = await settingsPage.textContent("h1");
+
+    const result = {
+      extensionId,
+      dashboardHeading: heading,
+      timelinePresent: timelineCount > 0,
+      runtimeStatusOk: status?.ok === true,
+      retentionDays: status?.retentionDays,
+      paused: status?.paused,
+      settingsHeading
+    };
+
+    console.log(JSON.stringify(result, null, 2));
+
+    if (
+      result.dashboardHeading !== "Chrome Activity Reader" ||
+      !result.timelinePresent ||
+      result.runtimeStatusOk !== true ||
+      result.settingsHeading !== "Settings"
+    ) {
+      process.exitCode = 1;
+    }
+  } finally {
+    await context.close();
+  }
+}
+
+run().catch((error) => {
+  console.error("Extension smoke test failed:", error);
+  process.exitCode = 1;
+});