ui(stats): Improve visibility of season start.

src/modules/ranks/ui/overview.py

@@ -349,7 +349,7 @@ class RankOverviewUI(MessageUI):
                 string = f"{start} msgs"
         return string
 
-    async def make_message(self) -> MessageArgs:
+    async def make_message(self, show_note=True) -> MessageArgs:
         t = self.bot.translator.t
 
         if self.ranks:
@@ -380,6 +380,34 @@ class RankOverviewUI(MessageUI):
             ] or [[]]
             lines = line_blocks[self.pagen]
             desc = '\n'.join(reversed(lines))
+
+            # Add note about season start
+            note_name = t(_p(
+                'ui:rank_overview|embed|field:note|name',
+                "Note"
+            ))
+            season_start = self.lguild.data.season_start
+            if season_start:
+                season_str = t(_p(
+                    'ui:rank_overview|embed|field:note|value:with_season',
+                    "Ranks are determined by activity since {timestamp}."
+                )).format(
+                    timestamp=discord.utils.format_dt(season_start)
+                )
+            else:
+                season_str = t(_p(
+                    'ui:rank_overview|embed|field:note|value:without_season',
+                    "Ranks are determined by *all-time* statistics.\n"
+                    "To reward ranks from a later time (e.g. to have monthly/quarterly/yearly ranks) "
+                    "set the `season_start` with {stats_cmd}"
+                )).format(stats_cmd=self.bot.core.mention_cmd('configure statistics'))
+            if self.rank_type is RankType.VOICE:
+                addendum = t(_p(
+                    'ui:rank_overview|embed|field:note|value|voice_addendum',
+                    "Also note that ranks will only be updated when a member leaves a tracked voice channel! "
+                    "Use the **Refresh Member Ranks** button below to update all members manually."
+                ))
+                season_str = '\n'.join((season_str, addendum))
         else:
             # No ranks, give hints about adding ranks
             desc = t(_p(
@@ -410,6 +438,13 @@ class RankOverviewUI(MessageUI):
             title=title,
             description=desc
         )
+        if show_note:
+            embed.add_field(
+                name=note_name,
+                value=season_str,
+                inline=False
+            )
+
         return MessageArgs(embed=embed)
 
     async def refresh_layout(self):