feat(nikki): track Infinity Nikki

Adds the game and its Game8 events page. One `SOURCES` entry against the
existing game8 parser, plus one date shape that page needs:
`parseLabelledStartEnd` reads a duration cell holding `Start: <date>` and
`End: <date>` split by a `<br>`, which a tag-stripping reader flattens
into one run of text.

Four of the seven events say `End: Permanent`. That is the source telling
us there is no deadline, so they publish with `endsAt: null` and
`endPrecision: "unknown"` rather than a plausible date. The labelled cell
is also structure end to end, so it never becomes a summary — stripping
the leading half would leave "End: Permanent" standing where a
description belongs.

Verified by re-extracting the page with a throwaway script independent of
the parser: 7 rows in, 7 events out, every date matching.

Note the source itself is stale — its "Current Events" table still lists
January-May 2025 and "Upcoming Events" says there are none. The adapter is
right; the page looks abandoned, and Nikki coverage worth relying on needs
a second source at a higher priority.

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

src/ingest/adapters/index.ts

@@ -66,6 +66,12 @@ const SOURCES: SourceSpec[] = [
     url: "https://game8.co/games/Neverness-to-Everness/archives/592073",
     parserId: "game8",
   },
+  {
+    id: "nikki-game8-events",
+    game: "nikki",
+    url: "https://game8.co/games/Infinity-Nikki/archives/487445",
+    parserId: "game8",
+  },
 ];
 
 function toAdapter(spec: SourceSpec): Adapter {

src/ingest/dates.ts

@@ -147,6 +147,34 @@ export function parseShortSlashRange(
   };
 }
 
+/**
+ * "Start: January 24, 2025 End: Permanent" → the start, and whatever the end
+ * half turns out to be.
+ *
+ * A labelled cell rather than a range: the two halves are separated by a `<br>`
+ * and each carries its own word. The colons are required, which is what stops
+ * the word "end" inside a description from splitting a cell that is really
+ * prose.
+ *
+ * An end half that is not a date ("Permanent", "TBD", "After maintenance")
+ * yields a null end rather than an invented one — the same outcome as
+ * `parseOpenRange`, and for the same reason.
+ */
+export function parseLabelledStartEnd(
+  input: string,
+): { start: ParsedInstant; end: ParsedInstant | null } | null {
+  const m = /^\s*start\s*[:：]\s*(.+?)(?:\s+end\s*[:：]\s*(.*?))?\s*$/i.exec(
+    input,
+  );
+  if (!m) return null;
+
+  const start = parseMonthDayYear(m[1] ?? "");
+  if (start === null) return null;
+
+  const endHalf = m[2];
+  return { start, end: endHalf === undefined ? null : parseMonthDayYear(endHalf) };
+}
+
 /**
  * A range whose start is a real date but whose end is not: "July 10, 2026 -
  * Permanent", "Jul. 24, 2026 - End of 4.6", or a lone start date.

src/ingest/parsers/game8.ts

@@ -5,6 +5,7 @@ import {
 } from "../../shared/schema.ts";
 import {
   parseFullRange,
+  parseLabelledStartEnd,
   parseMonthDayRange,
   parseMonthDayYear,
   parseOpenRange,
@@ -313,6 +314,11 @@ function isRequirementOnly(text: string): boolean {
 
 /** Strip a leading label and date range, leaving any description behind it. */
 function proseAfterDates(cell: string): string | null {
+  // A fully labelled "Start: … End: …" cell is structure end to end. Stripping
+  // the leading half would leave "End: Permanent" standing where a description
+  // belongs — a date masquerading as a blurb.
+  if (parseLabelledStartEnd(cell) !== null) return null;
+
   const rest = cell
     .replace(/^\s*(period|duration|schedule|dates?)\s*[:：]\s*/i, "")
     .replace(RANGE_PREFIX, "")
@@ -330,6 +336,7 @@ function parseRange(
     parseFullRange(value) ??
     parseShortSlashRange(value) ??
     parseMonthDayRange(value) ??
+    parseLabelledStartEnd(value) ??
     parseOpenRange(value)
   );
 }

src/shared/games.ts

@@ -53,6 +53,7 @@ export const GAMES: Record<GameId, GameMeta> = {
   // and `america` already resolves to -5, so Europe is the only real override.
   endfield: { id: "endfield", name: "Arknights: Endfield", short: "Endfield", hue: "#E8635A" , studio: "Hypergryph", dailyTasks: "Daily missions", resetOffsets: { europe: -5 } },
   nte: { id: "nte", name: "Neverness to Everness", short: "NTE", hue: "#C77DFF" , studio: "Hotta Studio", dailyTasks: "Daily tasks" },
+  nikki: { id: "nikki", name: "Infinity Nikki", short: "Nikki", hue: "#F27BB0" , studio: "Infold Games", dailyTasks: "Daily tasks, Vital Energy" },
 };
 
 export const GAME_LIST: GameMeta[] = Object.values(GAMES);

src/shared/schema.ts

@@ -8,6 +8,7 @@ export const GameId = z.enum([
   "arknights",
   "endfield",
   "nte", // Neverness to Everness
+  "nikki", // Infinity Nikki
 ]);
 export type GameId = z.infer<typeof GameId>;