Add node operator tray app and browser extension

extension/background.js

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+// SPDX-License-Identifier: MPL-2.0
+// (PMPL-1.0-or-later preferred; MPL-2.0 required for browser extension stores)
+
+/// Background service worker — polls boj-server health and updates
+/// the extension badge to reflect current server status.
+
+const SERVER_URL = "http://localhost:7700";
+const POLL_INTERVAL_MINUTES = 1;
+
+/// Fetch server health and update the badge icon/text.
+async function pollHealth() {
+  try {
+    const resp = await fetch(`${SERVER_URL}/health`, {
+      signal: AbortSignal.timeout(3000),
+    });
+
+    if (resp.ok) {
+      const status = await resp.json();
+      await chrome.action.setBadgeBackgroundColor({ color: "#4ecca3" });
+      await chrome.action.setBadgeText({ text: "ON" });
+      // Store latest status for the popup to read immediately
+      await chrome.storage.local.set({ lastStatus: status, lastPoll: Date.now() });
+    } else {
+      await setOfflineBadge();
+    }
+  } catch (_err) {
+    await setOfflineBadge();
+  }
+}
+
+async function setOfflineBadge() {
+  await chrome.action.setBadgeBackgroundColor({ color: "#e74c3c" });
+  await chrome.action.setBadgeText({ text: "OFF" });
+  await chrome.storage.local.set({
+    lastStatus: {
+      healthy: false,
+      uptime_secs: 0,
+      cartridges_loaded: 0,
+      peers_connected: 0,
+      requests_served: 0,
+    },
+    lastPoll: Date.now(),
+  });
+}
+
+// Poll on alarm
+chrome.alarms.create("health-poll", { periodInMinutes: POLL_INTERVAL_MINUTES });
+chrome.alarms.onAlarm.addListener((alarm) => {
+  if (alarm.name === "health-poll") {
+    pollHealth();
+  }
+});
+
+// Poll immediately on install/startup
+chrome.runtime.onInstalled.addListener(() => pollHealth());
+chrome.runtime.onStartup.addListener(() => pollHealth());
+
+// Allow popup to request an immediate refresh
+chrome.runtime.onMessage.addListener((msg, _sender, sendResponse) => {
+  if (msg.type === "poll-now") {
+    pollHealth().then(() => sendResponse({ ok: true }));
+    return true; // async response
+  }
+});

extension/manifest.json

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+{
+  "manifest_version": 3,
+  "name": "BoJ Node Monitor",
+  "version": "0.1.0",
+  "description": "Dashboard for monitoring your local Bundle of Joy (BoJ) server instance.",
+  "author": "Jonathan D.A. Jewell",
+  "permissions": ["storage", "alarms"],
+  "host_permissions": [
+    "http://localhost:7700/*",
+    "http://[::1]:7700/*"
+  ],
+  "action": {
+    "default_popup": "popup.html",
+    "default_icon": {
+      "16": "icons/icon-16.png",
+      "32": "icons/icon-32.png",
+      "48": "icons/icon-48.png",
+      "128": "icons/icon-128.png"
+    }
+  },
+  "icons": {
+    "16": "icons/icon-16.png",
+    "32": "icons/icon-32.png",
+    "48": "icons/icon-48.png",
+    "128": "icons/icon-128.png"
+  },
+  "background": {
+    "service_worker": "background.js"
+  }
+}