feat(scout-for-lol): add Pandemonium Acts 1 & 2 to season presets

Pandemonium (Season 2 of 2026) launched 2026-04-29 with Patch 26.09. The
existing preset list ended with For Demacia Act 2 (2026-04-30), leaving the
/competition season dropdown empty as of today.

- Add 2026_SEASON_2_ACT_1 "Pandemonium (Act 1)" (2026-04-29 → 2026-06-09)
- Add 2026_SEASON_2_ACT_2 "Pandemonium (Act 2)" (2026-06-10 → 2026-08-12)
- Fix 2026_SEASON_1_ACT_2 end date from 2026-04-30 to 2026-04-28 to maintain
  the 1-day gap convention before Pandemonium Act 1 starts.

Sources:
- https://wiki.leagueoflegends.com/en-us/Pandemonium
- https://wiki.leagueoflegends.com/en-us/2026_Annual_Cycle

Author: shepherdjerred

packages/scout-for-lol/packages/data/src/seasons.test.ts

@@ -43,6 +43,8 @@ describe("seasons", () => {
         "2025_SEASON_3_ACT_1",
         "2026_SEASON_1_ACT_1",
         "2026_SEASON_1_ACT_2",
+        "2026_SEASON_2_ACT_1",
+        "2026_SEASON_2_ACT_2",
       ] as const;
       for (const id of validIds) {
         const result = SeasonIdSchema.safeParse(id);

packages/scout-for-lol/packages/data/src/seasons.ts

@@ -16,6 +16,8 @@ export const SeasonIdSchema = z.enum([
   "2025_SEASON_3_ACT_2",
   "2026_SEASON_1_ACT_1",
   "2026_SEASON_1_ACT_2",
+  "2026_SEASON_2_ACT_1",
+  "2026_SEASON_2_ACT_2",
 ]);
 
 export type SeasonId = z.infer<typeof SeasonIdSchema>;
@@ -53,7 +55,19 @@ export const SEASONS: Record<SeasonId, SeasonData> = {
     id: "2026_SEASON_1_ACT_2",
     displayName: "For Demacia (Act 2)",
     startDate: new Date("2026-03-05T00:00:00-08:00"),
-    endDate: new Date("2026-04-30T23:59:59-07:00"),
+    endDate: new Date("2026-04-28T23:59:59-07:00"),
+  },
+  "2026_SEASON_2_ACT_1": {
+    id: "2026_SEASON_2_ACT_1",
+    displayName: "Pandemonium (Act 1)",
+    startDate: new Date("2026-04-29T00:00:00-07:00"),
+    endDate: new Date("2026-06-09T23:59:59-07:00"),
+  },
+  "2026_SEASON_2_ACT_2": {
+    id: "2026_SEASON_2_ACT_2",
+    displayName: "Pandemonium (Act 2)",
+    startDate: new Date("2026-06-10T00:00:00-07:00"),
+    endDate: new Date("2026-08-12T23:59:59-07:00"),
   },
 };