refactor(structure): move layered firmware modules from main to components

components/app_composition/CMakeLists.txt

@@ -1,10 +1,10 @@
 idf_component_register(
     SRCS
-        "../../main/app_composition/src/app_main.c"
+        "src/app_main.c"
     INCLUDE_DIRS
-        "../../main/app_composition/include"
+        "include"
     PRIV_INCLUDE_DIRS
-        "../../main/app_composition/internal"
+        "internal"
     REQUIRES
         control_plane
 )

components/app_composition/README.md

@@ -0,0 +1,8 @@
+# App Composition Layer
+
+Purpose: top-level assembly only.
+
+Rules:
+- `app_main` wires components, startup order, and shutdown hooks.
+- No feature/business logic in composition code.
+- No direct hardware operations outside platform abstractions.

components/app_composition/src/app_main.c

@@ -0,0 +1,16 @@
+#include "controller_lifecycle.h"
+
+#include "esp_err.h"
+#include "esp_log.h"
+
+static const char *TAG = "app_main";
+
+void app_main(void) {
+    esp_err_t rc = controller_lifecycle_start();
+    if (rc != ESP_OK) {
+        ESP_LOGE(TAG, "Controller lifecycle start failed: %s", esp_err_to_name(rc));
+        return;
+    }
+
+    ESP_LOGI(TAG, "TQ controller started");
+}