ext(sw): add get_active_tab_url popup handler

extension/src/service-worker/router/__tests__/router.test.ts

@@ -921,3 +921,36 @@ describe('parse_lastpass_csv / import_lastpass_commit sender check', () => {
     expect(result).toEqual({ ok: false, error: 'unauthorized_sender' });
   });
 });
+
+// --- get_active_tab_url ---
+
+describe('get_active_tab_url', () => {
+  it('get_active_tab_url returns active tab url + title', async () => {
+    // happy-dom does not provide chrome.tabs; stub it.
+    (globalThis as any).chrome = {
+      ...((globalThis as any).chrome ?? {}),
+      tabs: {
+        query: (q: any, cb: (tabs: any[]) => void) => {
+          cb([{ url: 'https://github.com/login', title: 'Sign in to GitHub' }]);
+        },
+      },
+    };
+    const resp = await route({ type: 'get_active_tab_url' } as any, makeState(), makePopupSender());
+    expect(resp.ok).toBe(true);
+    expect(resp.data).toEqual({ url: 'https://github.com/login', title: 'Sign in to GitHub' });
+  });
+
+  it('get_active_tab_url returns null for chrome:// pages', async () => {
+    (globalThis as any).chrome = {
+      ...((globalThis as any).chrome ?? {}),
+      tabs: {
+        query: (q: any, cb: (tabs: any[]) => void) => {
+          cb([{ url: 'chrome://newtab/', title: 'New Tab' }]);
+        },
+      },
+    };
+    const resp = await route({ type: 'get_active_tab_url' } as any, makeState(), makePopupSender());
+    expect(resp.ok).toBe(true);
+    expect(resp.data).toBeNull();
+  });
+});

extension/src/service-worker/router/popup-only.ts

@@ -146,6 +146,19 @@ export async function handle(
     case 'rate_passphrase':
       return { ok: true, data: state.wasm.rate_passphrase(msg.passphrase) };
 
+    case 'get_active_tab_url': {
+      const tabs = await new Promise<chrome.tabs.Tab[]>((resolve) => {
+        chrome.tabs.query({ active: true, lastFocusedWindow: true }, (t) => resolve(t));
+      });
+      const tab = tabs[0];
+      if (!tab?.url) return { ok: true, data: null };
+      // Filter out chrome:// and extension URLs — autofill doesn't apply.
+      if (/^(chrome|chrome-extension|moz-extension|edge|about|file):/i.test(tab.url)) {
+        return { ok: true, data: null };
+      }
+      return { ok: true, data: { url: tab.url, title: tab.title ?? '' } };
+    }
+
     case 'generate_password': {
       const password = state.wasm.generate_password(JSON.stringify(msg.request));
       return { ok: true, data: { password } };