ci(docs): add check that all IDF examples are referenced in the programming guide

Made-with: Cursor

docs/en/api-guides/build-system-v2.rst

@@ -7,7 +7,7 @@ Build System v2
 
 ESP-IDF CMake-based build system v2, referred to in this documentation simply as v2 or build system, is a successor to the original CMake-based :doc:`/api-guides/build-system`, referred to as v1. The v2 addresses limitations introduced in the previous version while trying to maintain backward compatibility for components written for v1. The most significant changes include the ability to use Kconfig variables to specify component dependencies, the removal of early component evaluation using CMake script mode, and support for writing components using the native CMake approach. While v2 aims to be as backward compatible with v1 as possible, meaning most components written for v1 should work without modification with v2, there are design differences between v1 and v2 that may require changes in v1 components to work with v2. The incompatibilities are described in :ref:`cmakev2-breaking-changes`.
 
-Example applications for Build System v2 are described in the :idf_file:`Build System v2 examples README <examples/build_system/cmakev2/README.md>`.
+Example applications for Build System v2 are described in the :example:`Build System v2 examples README <build_system/cmakev2>`.
 
 Creating a New Project
 ======================

docs/en/api-reference/system/sleep_modes.rst

@@ -527,6 +527,7 @@ Application Examples
     :esp32h2: - :example:`system/deep_sleep` demonstrates the usage of Deep-sleep wakeup triggered by various sources, such as the RTC timer, EXT0, EXT1, supported by ESP32-H2.
     - :example:`system/light_sleep` demonstrates the usage of Light-sleep wakeup triggered by various sources, such as the timer, GPIOs, supported by {IDF_TARGET_NAME}.
     :SOC_TOUCH_SENSOR_SUPPORTED and SOC_PM_SUPPORT_TOUCH_SENSOR_WAKEUP: - :example:`peripherals/touch_sensor/touch_sens_sleep` demonstrates the usage of Light-sleep and Deep-sleep wakeup triggered by the touch sensor.
+    :SOC_VBAT_SUPPORTED: - :example:`lowpower/vbat` demonstrates the use of backup battery power (VBAT) during Deep-sleep, allowing the RTC timer to keep running after the main power is removed.
 
 API Reference
 -------------

docs/zh_CN/api-reference/system/sleep_modes.rst

@@ -527,6 +527,7 @@ UART 输出处理
     :esp32h2: - :example:`system/deep_sleep` 演示如何通过 ESP32-H2 的唤醒源，如 RTC 定时器、EXT0、EXT1 等，触发 Deep-sleep 唤醒。
     - :example:`system/light_sleep` 演示如何使用  {IDF_TARGET_NAME} 的唤醒源，如定时器，GPIO 等，触发 Light-sleep 唤醒。
     :SOC_TOUCH_SENSOR_SUPPORTED and SOC_PM_SUPPORT_TOUCH_SENSOR_WAKEUP: - :example:`peripherals/touch_sensor/touch_sens_sleep` 演示如何使用触摸传感器唤醒 Light-sleep 或 Deep-sleep。
+    :SOC_VBAT_SUPPORTED: - :example:`lowpower/vbat` 演示如何在 Deep-sleep 期间使用备用电池电源（VBAT），使 RTC 定时器在主电源断开后继续运行。
 
 API 参考
 -------------