feat: add wiki.gg as a second Endfield source

First non-Game8 parser, and the first source that states region-scoped ends:
wiki.gg emits ISO timestamps with one timer per server region, so Endfield
events now carry exact times and separate Asia / Americas-Europe ends. That
gap is up to 13 hours, which is what regionEnds was built for.

Two sources for one game also exercised merge for real. It caught both
overlaps — including "Bedazzling Dawnstar" against Game8's "Bedazzling
Dawnstar Sign-In" — and flagged that the two disagree on the end date by 70
hours rather than averaging them into a date neither states.

Matching an appended qualifier needed a prefix test, not a subset test: a
subset would also fuse "Gold Clash" with "Gold Rush Clash Royale".

Also fixes build-feed picking fixtures by game rather than by source, which
handed the wiki.gg page to the Game8 parser once Endfield had two.

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

README.md

@@ -82,13 +82,18 @@ date makes you miss content. Given the choice, this ships nothing rather than a
 | Wuthering Waves | Game8 | 10 |
 | Zenless Zone Zero | Game8 | 12 |
 | Neverness to Everness | Game8 | 13 |
-| Arknights: Endfield | Game8 | 2 |
+| Arknights: Endfield | Game8 + wiki.gg | 6 |
 
 Game8 uses a different page template for almost every game — label/value detail tables, column
 tables, rowspan Start/End pairs — and four different date formats between them. One parser handles
 all of it; each game costs a registry entry.
 
-Endfield yields only two events because most of its page genuinely has no dates — every `Duration`
+Endfield is the first game with two sources. wiki.gg publishes machine-readable ISO timestamps with
+one timer per server region, so its events carry exact times and per-region ends — it outranks Game8
+and wins when they disagree. Merge caught two real disagreements between them, each 70 hours apart on
+the end date; those are flagged rather than averaged.
+
+Its Game8 page yields only two events because most of it genuinely has no dates — every `Duration`
 row reads "Permanently Available" and its version grid shows `07/16` with no year. The two dated
 events hide in a combined cell (`Period: 08/09/26 - 08/30/26 During the event...`), which is where
 the `MM/DD/YY` parser earns its place.

fixtures/endfield/wikigg-events-2026-08-14.expected.json

@@ -0,0 +1,132 @@
+[
+  {
+    "id": "endfield:heat-rage-mega-arena:2026-07-30",
+    "game": "endfield",
+    "title": "HEAT RAGE! MEGA ARENA!",
+    "type": "challenge",
+    "summary": "Challenge Event",
+    "startsAt": "2026-07-30T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-08-12T20:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": true,
+    "regionEnds": {
+      "asia": "2026-08-12T20:00:00.000Z",
+      "america": "2026-08-13T09:00:00.000Z",
+      "europe": "2026-08-13T09:00:00.000Z"
+    },
+    "sourceUrl": "https://endfield.wiki.gg/wiki/HEAT_RAGE!_MEGA_ARENA!",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  },
+  {
+    "id": "endfield:monumental-etching-beastly-howl:2026-08-06",
+    "game": "endfield",
+    "title": "Monumental Etching: Beastly Howl",
+    "type": "challenge",
+    "summary": "Challenge Event",
+    "startsAt": "2026-08-06T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-08-19T22:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": false,
+    "regionEnds": null,
+    "sourceUrl": "https://endfield.wiki.gg/wiki/Monumental_Etching:_Beastly_Howl",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  },
+  {
+    "id": "endfield:bedazzling-dawnstar:2026-08-09",
+    "game": "endfield",
+    "title": "Bedazzling Dawnstar",
+    "type": "login",
+    "summary": "Sign-In Event",
+    "startsAt": "2026-08-09T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-09-01T22:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": false,
+    "regionEnds": null,
+    "sourceUrl": "https://endfield.wiki.gg/wiki/Bedazzling_Dawnstar",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  },
+  {
+    "id": "endfield:like-a-star-streaking-through-the-boundaries:2026-08-09",
+    "game": "endfield",
+    "title": "Like a Star Streaking Through the Boundaries",
+    "type": "other",
+    "summary": "Narrative Event",
+    "startsAt": "2026-08-09T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-09-01T22:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": false,
+    "regionEnds": null,
+    "sourceUrl": "https://endfield.wiki.gg/wiki/Like_a_Star_Streaking_Through_the_Boundaries",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  },
+  {
+    "id": "endfield:season-of-delirating:2026-08-09",
+    "game": "endfield",
+    "title": "Season of Delirating",
+    "type": "other",
+    "summary": "Echoes of War Event",
+    "startsAt": "2026-08-09T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-09-01T22:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": false,
+    "regionEnds": null,
+    "sourceUrl": "https://endfield.wiki.gg/wiki/Season_of_Delirating",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  },
+  {
+    "id": "endfield:the-rooted-realm:2026-08-09",
+    "game": "endfield",
+    "title": "The Rooted Realm",
+    "type": "other",
+    "summary": "Fun & Games Event",
+    "startsAt": "2026-08-09T04:00:00.000Z",
+    "startPrecision": "exact",
+    "endsAt": "2026-09-01T22:00:00.000Z",
+    "endPrecision": "exact",
+    "regionScoped": false,
+    "regionEnds": null,
+    "sourceUrl": "https://endfield.wiki.gg/wiki/The_Rooted_Realm",
+    "sourceId": "endfield-wikigg-events",
+    "status": "published",
+    "confidence": 0.95,
+    "extractionMethod": "parser",
+    "version": 1,
+    "firstSeenAt": "2026-08-14T00:00:00.000Z",
+    "updatedAt": "2026-08-14T00:00:00.000Z"
+  }
+]

scripts/build-feed.ts

@@ -14,13 +14,20 @@ import type { GachaEvent, GameId } from "../src/shared/schema.ts";
 
 const OUT = "public/data/events.v1.json";
 
-/** Newest fixture per adapter. */
+/**
+ * Newest fixture for one *source*, not one game.
+ *
+ * A game can have several sources, and fixtures are named `<site>-events-<date>`
+ * against adapter ids of `<game>-<site>-events`. Globbing by game alone hands
+ * one site's page to another site's parser.
+ */
 async function latestFixture(adapterId: string, game: GameId) {
-  const glob = new Bun.Glob(`fixtures/${game}/*.html`);
+  const site = adapterId.replace(`${game}-`, "").replace(/-events$/, "");
-  const files = [...glob.scanSync(".")].sort();
+  const pattern = `fixtures/${game}/${site}-*.html`;
+  const files = [...new Bun.Glob(pattern).scanSync(".")].sort();
   const file = files.at(-1);
   if (file === undefined) {
-    throw new Error(`no fixture found for ${adapterId} (fixtures/${game}/*.html)`);
+    throw new Error(`no fixture found for ${adapterId} (${pattern})`);
   }
   return { file, html: await Bun.file(file).text() };
 }

src/ingest/adapters/index.ts

@@ -50,6 +50,15 @@ const SOURCES: SourceSpec[] = [
     url: "https://game8.co/games/Arknights-Endfield/archives/535443",
     parserId: "game8",
   },
+  {
+    id: "endfield-wikigg-events",
+    game: "endfield",
+    url: "https://endfield.wiki.gg/wiki/Event",
+    parserId: "wikigg",
+    // Exact timestamps and per-region ends beat Game8's day-precision prose,
+    // so this source wins when the two disagree.
+    priority: 10,
+  },
   {
     id: "nte-game8-events",
     game: "nte",

src/ingest/merge.ts

@@ -123,12 +123,36 @@ function isSameEvent(
   toleranceHours: number,
 ): boolean {
   if (a.id === b.id) return true;
-  if (titleSimilarity(a.title, b.title) < titleThreshold) return false;
+
+  // Overlap alone misses a source that appends a qualifier: "Bedazzling
+  // Dawnstar" vs "Bedazzling Dawnstar Sign-In" scores 0.67, well under any
+  // safe threshold, yet is plainly one event.
+  const similar =
+    titleSimilarity(a.title, b.title) >= titleThreshold ||
+    titleExtends(a.title, b.title);
+  if (!similar) return false;
+
   // Similar titles are not enough — reruns reuse names. Require the start dates
   // to be close before treating two entries as one event.
   return hoursBetween(a.startsAt, b.startsAt) <= toleranceHours;
 }
 
+/**
+ * True when one title is the other with words appended — the shape a source
+ * qualifier actually takes ("Bedazzling Dawnstar" → "… Sign-In").
+ *
+ * Deliberately a prefix test, not a subset test. Subset matching would also
+ * fuse "Gold Clash" with "Gold Rush Clash Royale", which are different events.
+ * Two words is the floor: a one-word title would swallow half the calendar.
+ */
+export function titleExtends(a: string, b: string): boolean {
+  const ta = tokenList(a);
+  const tb = tokenList(b);
+  const [small, large] = ta.length <= tb.length ? [ta, tb] : [tb, ta];
+  if (small.length < 2 || small.length === large.length) return false;
+  return small.every((word, i) => large[i] === word);
+}
+
 function findConflict(
   a: GachaEvent,
   b: GachaEvent,
@@ -163,12 +187,14 @@ export function titleSimilarity(a: string, b: string): number {
   return (2 * shared) / (ta.size + tb.size);
 }
 
+function tokenList(title: string): string[] {
+  return title
+    .toLowerCase()
+    .replace(/[^a-z0-9\s]/g, " ")
+    .split(/\s+/)
+    .filter((w) => w.length > 0);
+}
+
 function tokens(title: string): Set<string> {
-  return new Set(
+  return new Set(tokenList(title));
-    title
-      .toLowerCase()
-      .replace(/[^a-z0-9\s]/g, " ")
-      .split(/\s+/)
-      .filter((w) => w.length > 0),
-  );
 }

src/ingest/parsers/index.ts

@@ -1,4 +1,5 @@
 import { game8Parser } from "./game8.ts";
+import { wikiGgParser } from "./wikigg.ts";
 import type { SourceParser } from "./types.ts";
 
 /**
@@ -6,7 +7,7 @@ import type { SourceParser } from "./types.ts";
  * an entry in `adapters/index.ts`; adding a new *site* means a parser module
  * here and one line below.
  */
-export const PARSERS: SourceParser[] = [game8Parser];
+export const PARSERS: SourceParser[] = [game8Parser, wikiGgParser];
 
 export function parserById(id: string): SourceParser | undefined {
   return PARSERS.find((p) => p.id === id);
@@ -14,3 +15,4 @@ export function parserById(id: string): SourceParser | undefined {
 
 export type { SourceParser } from "./types.ts";
 export { game8Parser } from "./game8.ts";
+export { wikiGgParser } from "./wikigg.ts";

src/ingest/parsers/wikigg.ts

@@ -0,0 +1,142 @@
+import {
+  eventId,
+  Region,
+  type GachaEvent,
+  type Precision,
+} from "../../shared/schema.ts";
+import { text } from "../html.ts";
+import type { ParseContext } from "../adapters/types.ts";
+import { inferType } from "./game8.ts";
+import type { SourceParser } from "./types.ts";
+
+/**
+ * wiki.gg event pages (MediaWiki with the `mp-event` template).
+ *
+ * A markedly better source than a prose wiki: each event carries machine
+ * readable ISO timestamps, one timer per server region:
+ *
+ *   <div class="mp-event">
+ *     <div class="mp-event-header">[<span class="mp-event-name">TITLE</span>]
+ *       <span class="mp-event-type">Challenge Event</span></div>
+ *     <div class="mp-event-image"><a href="/wiki/SLUG" …></div>
+ *     <ul class="mp-event-timers">
+ *       <li data-start="…Z" data-end="…Z"><span class="mp-server-name">Asia:</span>…
+ *
+ * This is the first source that states region-scoped ends, which is what
+ * `regionScoped` / `regionEnds` exist for — the difference is up to 13 hours.
+ */
+
+const EVENT_BLOCK = /<div class="mp-event">([\s\S]*?)<ul class="mp-event-timers">([\s\S]*?)<\/ul>/gi;
+const NAME = /<span class="mp-event-name">([\s\S]*?)<\/span>/i;
+const TYPE = /<span class="mp-event-type">([\s\S]*?)<\/span>/i;
+const LINK = /<a href="(\/wiki\/[^"]+)"/i;
+const TIMER =
+  /<li[^>]*class="[^"]*mp-event-timer[^"]*"[^>]*data-start="([^"]+)"[^>]*data-end="([^"]+)"[\s\S]*?<span class="[^"]*mp-server-name[^"]*">([\s\S]*?)<\/span>/gi;
+
+/**
+ * Server labels vary in wording ("Americas / Europe:", "Asia:"), so match on
+ * the words present rather than expecting one label per region. A single timer
+ * can legitimately cover two regions.
+ */
+function regionsFor(label: string): Region[] {
+  const l = label.toLowerCase();
+  const out: Region[] = [];
+  if (/asia/.test(l)) out.push("asia");
+  if (/america/.test(l)) out.push("america");
+  if (/europe|eu\b/.test(l)) out.push("europe");
+  return out;
+}
+
+interface Timer {
+  regions: Region[];
+  start: number;
+  end: number;
+}
+
+export function parseWikiGgEventsPage(
+  html: string,
+  ctx: ParseContext,
+): GachaEvent[] {
+  const flat = html.replace(/\s+/g, " ");
+  const out: GachaEvent[] = [];
+
+  for (const block of flat.matchAll(EVENT_BLOCK)) {
+    const head = block[1] ?? "";
+    const timersHtml = block[2] ?? "";
+
+    const title = text(NAME.exec(head)?.[1] ?? "");
+    if (title.length === 0) continue;
+
+    const timers: Timer[] = [];
+    for (const t of timersHtml.matchAll(TIMER)) {
+      const start = Date.parse(t[1] ?? "");
+      const end = Date.parse(t[2] ?? "");
+      if (Number.isNaN(start) || Number.isNaN(end) || end <= start) continue;
+      timers.push({ regions: regionsFor(text(t[3] ?? "")), start, end });
+    }
+    if (timers.length === 0) continue;
+
+    const regionEnds: Partial<Record<Region, string>> = {};
+    for (const timer of timers) {
+      for (const region of timer.regions) {
+        regionEnds[region] = new Date(timer.end).toISOString();
+      }
+    }
+
+    const covered = Object.keys(regionEnds).length;
+    // Region-scoped only when the source actually distinguishes regions and
+    // they genuinely differ. One timer for everyone is a global instant.
+    const distinctEnds = new Set(Object.values(regionEnds)).size;
+    const regionScoped = covered > 0 && distinctEnds > 1;
+
+    // Canonical start is the earliest any region sees it; the canonical end is
+    // the earliest any region loses it. `endsAt` is only a fallback for a
+    // region the source did not list, so the conservative choice is right.
+    const startsAt = new Date(
+      Math.min(...timers.map((t) => t.start)),
+    ).toISOString();
+    const endsAt = new Date(Math.min(...timers.map((t) => t.end))).toISOString();
+
+    const href = LINK.exec(block[0] ?? "")?.[1];
+    const typeLabel = text(TYPE.exec(head)?.[1] ?? "");
+    const precision: Precision = "exact";
+
+    out.push({
+      id: eventId(ctx.game, title, startsAt),
+      game: ctx.game,
+      title,
+      type: inferType(`${title} ${typeLabel}`),
+      summary: typeLabel.length > 0 ? typeLabel : null,
+      startsAt,
+      startPrecision: precision,
+      endsAt,
+      endPrecision: precision,
+      regionScoped,
+      regionEnds: regionScoped ? (regionEnds as Record<Region, string>) : null,
+      sourceUrl: href === undefined ? ctx.sourceUrl : new URL(href, ctx.sourceUrl).toString(),
+      sourceId: ctx.sourceId,
+      status: "published",
+      // Exact timestamps straight from the source, no inference anywhere.
+      confidence: 0.95,
+      extractionMethod: "parser",
+      version: 1,
+      firstSeenAt: ctx.now,
+      updatedAt: ctx.now,
+    });
+  }
+
+  return out.sort((a, b) =>
+    a.startsAt === b.startsAt
+      ? a.id.localeCompare(b.id)
+      : a.startsAt.localeCompare(b.startsAt),
+  );
+}
+
+export const wikiGgParser: SourceParser = {
+  id: "wikigg",
+  label: "wiki.gg",
+  canParse(html: string): boolean {
+    return /class="mp-event"/.test(html) && /mp-event-timer/.test(html);
+  },
+  parse: parseWikiGgEventsPage,
+};

test/adapters/game8.test.ts

@@ -26,6 +26,7 @@ const CASES: Array<{ adapter: Adapter; fixture: string }> = [
   { adapter: adapter("wuwa-game8-events"), fixture: "fixtures/wuwa/game8-events-2026-08-14" },
   { adapter: adapter("zzz-game8-events"), fixture: "fixtures/zzz/game8-events-2026-08-14" },
   { adapter: adapter("endfield-game8-events"), fixture: "fixtures/endfield/game8-events-2026-08-14" },
+  { adapter: adapter("endfield-wikigg-events"), fixture: "fixtures/endfield/wikigg-events-2026-08-14" },
 ];
 
 async function runAdapter(adapter: Adapter, fixture: string) {
@@ -224,3 +225,34 @@ describe("endfield", () => {
     expect(rooted?.summary).not.toMatch(/^Period:/);
   });
 });
+
+describe("wiki.gg parser", () => {
+  test("reads exact per-region timers", async () => {
+    // The first source that states region-scoped ends. Asia and the Americas
+    // differ by hours, which is precisely what regionEnds exists to carry.
+    const events = await runAdapter(
+      adapter("endfield-wikigg-events"),
+      "fixtures/endfield/wikigg-events-2026-08-14",
+    );
+    expect(events).toHaveLength(6);
+
+    const heat = events.find((e) => e.title === "HEAT RAGE! MEGA ARENA!");
+    expect(heat?.startPrecision).toBe("exact");
+    expect(heat?.regionScoped).toBe(true);
+    expect(heat?.regionEnds?.asia).toBe("2026-08-12T20:00:00.000Z");
+    expect(heat?.regionEnds?.america).toBe("2026-08-13T09:00:00.000Z");
+    // endsAt is the fallback for a region the source did not list, so it takes
+    // the earliest — never promise more time than some region actually gets.
+    expect(heat?.endsAt).toBe("2026-08-12T20:00:00.000Z");
+  });
+
+  test("links each event to its own wiki page", async () => {
+    const events = await runAdapter(
+      adapter("endfield-wikigg-events"),
+      "fixtures/endfield/wikigg-events-2026-08-14",
+    );
+    for (const e of events) {
+      expect(e.sourceUrl).toStartWith("https://endfield.wiki.gg/wiki/");
+    }
+  });
+});

test/merge.test.ts

@@ -1,5 +1,9 @@
 import { describe, expect, test } from "bun:test";
-import { mergeEvents, titleSimilarity } from "../src/ingest/merge.ts";
+import {
+  mergeEvents,
+  titleExtends,
+  titleSimilarity,
+} from "../src/ingest/merge.ts";
 import type { GachaEvent } from "../src/shared/schema.ts";
 
 const NOW = "2026-08-14T00:00:00.000Z";
@@ -134,3 +138,56 @@ describe("titleSimilarity", () => {
     expect(titleSimilarity("Gold Clash", "Fishing Frenzy")).toBeLessThan(0.3);
   });
 });
+
+describe("titleExtends", () => {
+  test("matches a title with an appended qualifier", () => {
+    // Real case: Game8 says "Bedazzling Dawnstar Sign-In", wiki.gg says
+    // "Bedazzling Dawnstar". Token overlap scores 0.67 — under any safe
+    // threshold — but it is plainly one event.
+    expect(titleExtends("Bedazzling Dawnstar", "Bedazzling Dawnstar Sign-In")).toBe(true);
+  });
+
+  test("refuses a single shared word", () => {
+    // A one-word title would otherwise swallow everything containing it.
+    expect(titleExtends("Rerun", "Overflowing Abundance Rerun")).toBe(false);
+  });
+
+  test("refuses a shared-word subset that is not a prefix", () => {
+    // Subset matching would fuse these; they are different events.
+    expect(titleExtends("Gold Clash", "Gold Rush Clash Royale")).toBe(false);
+  });
+
+  test("refuses two titles of equal length", () => {
+    expect(titleExtends("Gold Clash", "Gold Rush")).toBe(false);
+  });
+});
+
+describe("merging two sources for one game", () => {
+  test("collapses an appended-qualifier duplicate and flags the date gap", () => {
+    const g8 = event({
+      id: "endfield:bedazzling-dawnstar-sign-in:2026-08-09",
+      game: "endfield",
+      title: "Bedazzling Dawnstar Sign-In",
+      startsAt: "2026-08-09T00:00:00.000Z",
+      endsAt: "2026-08-30T00:00:00.000Z",
+      sourceId: "endfield-game8-events",
+      confidence: 0.85,
+    });
+    const wiki = event({
+      id: "endfield:bedazzling-dawnstar:2026-08-09",
+      game: "endfield",
+      title: "Bedazzling Dawnstar",
+      startsAt: "2026-08-09T04:00:00.000Z",
+      endsAt: "2026-09-01T22:00:00.000Z",
+      sourceId: "endfield-wikigg-events",
+      confidence: 0.95,
+    });
+    const { events, conflicts } = mergeEvents([[g8], [wiki]]);
+    expect(events).toHaveLength(1);
+    // The better-sourced copy wins, and the disagreement is surfaced rather
+    // than averaged into a date neither source states.
+    expect(events[0]?.sourceId).toBe("endfield-wikigg-events");
+    expect(conflicts).toHaveLength(1);
+    expect(conflicts[0]?.field).toBe("endsAt");
+  });
+});