Add EchoType submodule, update desktop submodule for EchoType Bridge

- Add EchoType as new submodule (TSF text-service MVP)
- Update desktop submodule pointer: convert to EchoType Bridge
  (pipe injection via TIP composition-commit)

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

.gitmodules

@@ -1,6 +1,9 @@
 [submodule "desktop"]
 	path = desktop
-	url = git@gitea.server10086.icu:WirelessTextSyncer/desktop.git
+	url = git@gitea.misdev.icu:WirelessTextSyncer/desktop.git
 [submodule "android"]
 	path = android
-	url = git@gitea.server10086.icu:WirelessTextSyncer/android.git
+	url = git@gitea.misdev.icu:WirelessTextSyncer/android.git
+[submodule "EchoType"]
+	path = EchoType
+	url = git@gitea.misdev.icu:WirelessTextSyncer/EchoType.git