Tidy up, add design notes

Hardware/keyboard_controller/battery.kicad_sch

@@ -3801,6 +3801,17 @@
 		)
 		(uuid "0c9d1472-bf69-4ea9-b0fe-3d703add182a")
 	)
+	(text "Is diode necessary?"
+		(exclude_from_sim no)
+		(at 111.252 137.922 0)
+		(effects
+			(font
+				(size 1.27 1.27)
+			)
+			(justify left)
+		)
+		(uuid "0efbea3b-d3f6-4c42-8c9e-d06a083e2adc")
+	)
 	(text "TODO: \nSequence on/off of battery supply and charger\nLink overdischarge flag to control of boost circuit?"
 		(exclude_from_sim no)
 		(at 312.42 244.856 0)
@@ -3865,17 +3876,6 @@
 		)
 		(uuid "845b8a7b-ac14-4fb2-a48d-264ddde53dba")
 	)
-	(text "Ideal diode\nRequires well matched BJTs\n\nAlternative: DMMT5401, BC857B is cheaper\n\nNotes on blog https://www.microfarad.de/blog/the-ideal-diode/\nare pertinent wrt soft startup. May be fixable with gate drive?"
-		(exclude_from_sim no)
-		(at 367.03 177.8 0)
-		(effects
-			(font
-				(size 1.27 1.27)
-				(thickness 0.1588)
-			)
-		)
-		(uuid "9e1bb4b2-c269-40a6-98f3-f895d2259c5e")
-	)
 	(text "Charger to be enabled by software"
 		(exclude_from_sim no)
 		(at 73.66 55.626 0)