Closing Eyes (#22957)

* You can now close your eyes. This blinds you, but gives you protection
against flash effects.
* Welding while blind takes three times as long and has an 80% chance to
fail, with a risk of burning yourself.

<img width="825" height="571" alt="image"
src="https://github.com/user-attachments/assets/14871444-e1c6-4d0f-8f56-d07e56055db0"
/>
<img width="875" height="633" alt="image"
src="https://github.com/user-attachments/assets/134379bb-474c-4c5d-b069-2559d9390305"
/>


AI usage disclosure: The code for this was created in-part using GPT 5.6
Sol.

code/modules/organs/internal/eyes.dm

@@ -12,6 +12,26 @@
 	toxin_type = CE_OCULOTOXIC
 	var/list/eye_colour = list(0,0,0)
 	var/singular_name = "eye"
+	/// Whether the owner has voluntarily closed this organ.
+	var/eyes_closed = FALSE
+
+/obj/item/organ/internal/eyes/verb/toggle_eyes()
+	set name = "Open/Close Eyes"
+	set desc = "Close your eyes to block your vision and protect them from bright flashes."
+	set category = "IC"
+	set src in usr
+
+	if(!owner || usr != owner || owner.incapacitated())
+		return
+
+	eyes_closed = !eyes_closed
+	if(eyes_closed)
+		owner.custom_emote(VISIBLE_MESSAGE, "closes their eyes.")
+	else
+		owner.custom_emote(VISIBLE_MESSAGE, "opens their eyes.")
+
+	owner.update_body()
+	owner.handle_vision()
 
 /obj/item/organ/internal/eyes/proc/update_colour()
 	if(!owner)