chore(repo): keep only current main snapshot

History squashed to one root commit to permanently drop old branch history and objects.

components/app_composition/CMakeLists.txt

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+idf_component_register(
+    SRCS
+        "src/app_main.c"
+    INCLUDE_DIRS
+        "include"
+    PRIV_INCLUDE_DIRS
+        "internal"
+    REQUIRES
+        control_plane
+)

components/app_composition/README.md

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+# 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/include/app_composition.h

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+#pragma once
+
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+esp_err_t app_composition_start(void);
+
+#ifdef __cplusplus
+}
+#endif

components/app_composition/src/app_main.c

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+#include "app_composition.h"
+#include "control_plane.h"
+
+#include "esp_err.h"
+#include "esp_log.h"
+
+static const char *TAG = "app_main";
+
+esp_err_t app_composition_start(void) {
+    return controller_lifecycle_start();
+}
+
+void app_main(void) {
+    esp_err_t rc = app_composition_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");
+}