chore: initial commit of TaskTracker project

Existing ASP.NET API with vanilla JS SPA, WindowWatcher, Chrome extension, and MCP server.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ChromeExtension/background.js

@@ -0,0 +1,55 @@
+const API_BASE = "http://localhost:5200";
+let debounceTimer = null;
+let lastReportedUrl = "";
+let lastReportedTitle = "";
+
+function reportTab(tab) {
+  if (!tab || !tab.url || tab.url.startsWith("chrome://") || tab.url.startsWith("chrome-extension://")) {
+    return;
+  }
+
+  // Skip if same as last reported
+  if (tab.url === lastReportedUrl && tab.title === lastReportedTitle) {
+    return;
+  }
+
+  // Debounce: wait 2 seconds before reporting
+  if (debounceTimer) {
+    clearTimeout(debounceTimer);
+  }
+
+  debounceTimer = setTimeout(() => {
+    const payload = {
+      source: "ChromeExtension",
+      appName: "chrome.exe",
+      windowTitle: tab.title || "",
+      url: tab.url
+    };
+
+    fetch(`${API_BASE}/api/context`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(payload)
+    })
+      .then(() => {
+        lastReportedUrl = tab.url;
+        lastReportedTitle = tab.title;
+      })
+      .catch(err => console.warn("Failed to report context:", err));
+  }, 2000);
+}
+
+// Tab switched
+chrome.tabs.onActivated.addListener((activeInfo) => {
+  chrome.tabs.get(activeInfo.tabId, (tab) => {
+    if (chrome.runtime.lastError) return;
+    reportTab(tab);
+  });
+});
+
+// Navigation within tab
+chrome.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
+  if (changeInfo.status === "complete" && tab.active) {
+    reportTab(tab);
+  }
+});