feat(games): name FGO's daily chore, and say why it has no reset offset

Daily Quests is what the game calls the thing, not "daily missions".

The offset is the part worth recording. The English server is a single
worldwide machine on US Pacific — every duration on Event_List_(US)
says PDT — which normally earns a resetOffsets entry the way holodori's
JST did. It cannot have one: Pacific observes daylight saving and the
page itself alternates PDT and PST, while resetOffsets holds one fixed
number per region. Both -7 and -8 are wrong for half the year, and
either would re-label day keys twice a year for readers who logged
ticks under the other. So fgo takes the default and the gap is a
comment rather than a guess.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

src/shared/games.ts

@@ -94,7 +94,16 @@ export const GAMES: Record<GameId, GameMeta> = {
   // has to come from a source that states the clock. Inventing one moves real
   // readers' day keys, and a wrong guess ticks the wrong box every night.
   ba: { id: "ba", name: "Blue Archive", short: "Blue Archive", hue: "#3FCBDD" , studio: "Nexon Games", dailyTasks: "Daily missions, AP" },
-  fgo: { id: "fgo", name: "Fate/Grand Order", short: "FGO", hue: "#1D3A8F", studio: "Lasengle", dailyTasks: "Daily missions, AP" },
+  // No `resetOffsets`, and this one is a gap in the field rather than a gap in
+  // the evidence. The English server is a single worldwide machine on US
+  // Pacific time — every duration on the wiki's `Event_List_(US)` says so — but
+  // Pacific observes daylight saving, and the page itself alternates `PDT` and
+  // `PST` across the year. `resetOffsets` is one fixed number per region, so
+  // there is no honest value: -7 is wrong all winter and -8 all summer, and
+  // either way it re-labels day keys twice a year for readers who have logged
+  // ticks under the other one. A game whose server clock shifts needs a field
+  // that can shift with it — see the note in AGENTS.md § Event IDs.
+  fgo: { id: "fgo", name: "Fate/Grand Order", short: "FGO", hue: "#1D3A8F", studio: "Lasengle", dailyTasks: "Daily Quests, AP" },
   // hololive Dreams runs a single worldwide service on a Japanese clock, and
   // both halves of that come from the source rather than from habit: every
   // boundary on holodori.wiki is stated once, in `(JST)`, with no per-region