feat(kotlin-compose): design system + 33 components + gallery_kt + e2e android emulator + scaffolder fixes

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

cpp/apps/text_editor_smoke/app.md

@@ -0,0 +1,28 @@
+---
+name: text_editor_smoke
+lang: cpp
+domain: tools
+description: "Smoke test CLI (sin GUI) que valida los wrappers PIMPL de text_editor y file_watcher (inotify Linux / ReadDirectoryChangesW Win). No abre ventana ImGui — solo crea/settea texto/lee/poll/destruye."
+tags: [cpp, smoke, test, cli]
+uses_functions:
+  - text_editor_cpp_core
+  - file_watcher_cpp_core
+uses_types: []
+framework: "cli"
+entry_point: "main.cpp"
+dir_path: "cpp/apps/text_editor_smoke"
+repo_url: ""
+---
+
+# text_editor_smoke
+
+Smoke test que verifica las APIs de `text_editor` y `file_watcher` linkean correctamente. Sin ventana ImGui.
+
+## Build & run
+
+```bash
+cd cpp && cmake --build build --target text_editor_smoke -j
+./build/text_editor_smoke
+```
+
+Salida esperada: log con bytes leidos del editor + eventos del file_watcher.