feat: cam and slience detect sleep

main/Kconfig.projbuild

@@ -141,6 +141,36 @@ config ZHENGCHEN_CAM_USE_GIF_EMOJI
         When enabled, default assets use custom-emojis/gif.
         When disabled, default assets use custom-emojis/png.
 
+menu "Fatigue Reminder"
+    depends on BOARD_TYPE_ZHENGCHEN_CAM || BOARD_TYPE_ZHENGCHEN_CAM_ML307
+
+choice FATIGUE_DETECTION_DEFAULT_MODE
+    prompt "Default fatigue detection mode"
+    default FATIGUE_DETECTION_MODE_CAMERA
+    help
+        Select the default fatigue reminder detection mode used when no runtime NVS
+        override exists.
+
+    config FATIGUE_DETECTION_MODE_CAMERA
+        bool "Camera blink/eye closure only"
+    config FATIGUE_DETECTION_MODE_SILENCE
+        bool "Silence/no-speaking only"
+    config FATIGUE_DETECTION_MODE_BOTH
+        bool "Camera and silence"
+    config FATIGUE_DETECTION_MODE_OFF
+        bool "Off"
+endchoice
+
+config FATIGUE_CAMERA_DEBUG_PREVIEW_DEFAULT
+    bool "Show camera debug preview by default"
+    depends on FATIGUE_DETECTION_MODE_CAMERA || FATIGUE_DETECTION_MODE_BOTH
+    default n
+    help
+        Show sampled camera frames while running local drowsiness detection.
+        This is useful for tuning, but it can cover the neutral standby image.
+
+endmenu
+
 choice
     depends on BOARD_TYPE_LILYGO_T_DISPLAY_P4
     prompt "Select the screen type"