(a) no need for the note, as it's quite clear from the glosses.
(b) no need for a "lit" if the gloss works by itself.
See: http://www.edrdg.org/wiki/index.php/Editorial_policy#Meanings : ``Note that the "[lit]" tag should not be used for such things as literal translations of the kanji in a jukugo.''

@@ -12,1 +12,0 @@
-<s_inf>Primarily used for school breaks, especially short break between classes.</s_inf>
@@ -14,1 +13,1 @@
-<gloss g_type="lit">break time</gloss>
+<gloss>break time</gloss>

GG5, 英辞郎

Closest translation is “recess”, which has same educational connotations.
Also used for vacations (multi-day breaks) and intermissions (at a play), AFAICT.