fix: prevent browser target and focus surprises

- Respect the globally selected browser when renaming client aliases.
- Pass the resolved local profile into sync and async local transports so
  BROWSER_CLI_PROFILE is honored consistently.
- Stop tabs.active from explicitly focusing the OS browser window, avoiding
  virtual-desktop jumps during tab activation.
- Make window merging skip audible, unmuted windows so video playback windows
  are not selected as merge targets.
- Bump the Python package and extension manifest versions to 0.12.2.
- Add regression coverage for browser selection and focus-stealing behavior.

tests/test_client.py

@@ -132,6 +132,44 @@ def test_send_command_auto_routes_single_remote_target(monkeypatch):
     assert sent["_route"] == "work"
     assert "token" not in sent
 
+def test_send_command_uses_env_profile_for_local_transport(monkeypatch):
+    monkeypatch.delenv("BROWSER_CLI_REMOTE", raising=False)
+    monkeypatch.setenv("BROWSER_CLI_PROFILE", "work")
+    seen = {}
+
+    def fake_send_local(profile, payload, resolve_socket):
+        seen["profile"] = profile
+        seen["payload"] = json.loads(payload)
+        return json.dumps({"success": True, "data": "ok"}).encode("utf-8")
+
+    monkeypatch.setattr("browser_cli.client.targets.is_active_local_profile", lambda profile: True)
+    monkeypatch.setattr("browser_cli.client.core.local_transport.send_local_sync", fake_send_local)
+
+    assert send_command("tabs.list") == "ok"
+    assert seen["profile"] == "work"
+    assert seen["payload"]["command"] == "tabs.list"
+
+async def _async_local_profile_result(monkeypatch):
+    seen = {}
+
+    async def fake_send_local(profile, payload, resolve_socket):
+        seen["profile"] = profile
+        return json.dumps({"success": True, "data": "ok"}).encode("utf-8")
+
+    monkeypatch.setattr("browser_cli.client.targets.is_active_local_profile", lambda profile: True)
+    monkeypatch.setattr("browser_cli.client.core.local_transport.send_local_async", fake_send_local)
+    result = await send_command_async("tabs.list")
+    return result, seen
+
+def test_send_command_async_uses_env_profile_for_local_transport(monkeypatch):
+    monkeypatch.delenv("BROWSER_CLI_REMOTE", raising=False)
+    monkeypatch.setenv("BROWSER_CLI_PROFILE", "work")
+
+    result, seen = asyncio.run(_async_local_profile_result(monkeypatch))
+
+    assert result == "ok"
+    assert seen["profile"] == "work"
+
 def test_send_command_prefers_active_local_profile_over_saved_remote_alias(monkeypatch, tmp_path):
     monkeypatch.delenv("BROWSER_CLI_REMOTE", raising=False)
     monkeypatch.delenv("BROWSER_CLI_PROFILE", raising=False)