data: add 64 charts and event challenge

UPDATES.md

@@ -1,9 +1,15 @@
 ---
-updatedAt: 2026-09-24T23:21:41Z
+updatedAt: 2026-09-25T11:16:00Z
 ---
 
 ## 2026년 9월 25일
 
+### 64. 악곡과 이벤트 과제곡 선택
+
+`DATA` 아냐 멜핏사의 솔로곡 64.를 추가했습니다. Easy·Normal·Hard·Expert의 정확한 채보와 곡별 점수 계산을 지원합니다.
+
+`IMPROVED` 이벤트 화면에서 이전 챕터의 악곡 선택이 저장돼 있어도 현재 챕터 과제곡을 먼저 선택합니다. 9월 25일 20시부터 아냐와 64.의 이벤트 보너스를 확인할 수 있습니다.
+
 ### 배치 분석 고점 달성 확률 추가
 
 `IMPROVED` 배치 분석 결과와 저장 기록 상세에 최고점의 99.5% 이상을 얻을 확률과 기준 점수를 추가했습니다. 기존 99%·95% 확률과 함께 25,000회 반복 계산합니다.

docs/research/sus-score-formulas.json

@@ -282,6 +282,10 @@
     {"songId":"m0350","difficulty":"easy","susSha256":"a2d614636b37bbf203898d9de074dc70af0c243094eb6ce76dd696c413fc0f6c","fullComboNoteCount":431,"counts":{"NORMAL":104,"FLICK":0,"LONG_START":46,"LONG_END":46,"LONG_FLICK_END":0,"LONG_RELAY":25,"LONG_CONTINUE":210},"invisibleRelayCount":4,"bezierPointCount":0,"baseWeight":219500,"perfectNoteWeight":219900,"liveScoreCoefficientPermil":9,"difficultyLevel":8,"catalogRevision":83,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
     {"songId":"m0350","difficulty":"normal","susSha256":"8a660117d447c482ff06f037b3af995575c11af5f3d63861030b331aa1900d9d","fullComboNoteCount":546,"counts":{"NORMAL":192,"FLICK":3,"LONG_START":51,"LONG_END":48,"LONG_FLICK_END":3,"LONG_RELAY":36,"LONG_CONTINUE":213},"invisibleRelayCount":2,"bezierPointCount":0,"baseWeight":322050,"perfectNoteWeight":322250,"liveScoreCoefficientPermil":9,"difficultyLevel":14,"catalogRevision":83,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
     {"songId":"m0350","difficulty":"hard","susSha256":"94767b00c3aa93ad93a825e62b7071f94164541ab46acb60086306bb119a158c","fullComboNoteCount":997,"counts":{"NORMAL":257,"FLICK":41,"LONG_START":137,"LONG_END":111,"LONG_FLICK_END":26,"LONG_RELAY":111,"LONG_CONTINUE":314},"invisibleRelayCount":501,"bezierPointCount":0,"baseWeight":616550,"perfectNoteWeight":666650,"liveScoreCoefficientPermil":9,"difficultyLevel":24,"catalogRevision":83,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
-    {"songId":"m0350","difficulty":"expert","susSha256":"ff6864d6c9fd9dd089f1c30a66e33bc8841527d01877fedac8ea9765037b3ec8","fullComboNoteCount":1538,"counts":{"NORMAL":452,"FLICK":277,"LONG_START":207,"LONG_END":108,"LONG_FLICK_END":99,"LONG_RELAY":23,"LONG_CONTINUE":372},"invisibleRelayCount":1534,"bezierPointCount":0,"baseWeight":1196350,"perfectNoteWeight":1349750,"liveScoreCoefficientPermil":9,"difficultyLevel":29,"catalogRevision":83,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"}
+    {"songId":"m0350","difficulty":"expert","susSha256":"ff6864d6c9fd9dd089f1c30a66e33bc8841527d01877fedac8ea9765037b3ec8","fullComboNoteCount":1538,"counts":{"NORMAL":452,"FLICK":277,"LONG_START":207,"LONG_END":108,"LONG_FLICK_END":99,"LONG_RELAY":23,"LONG_CONTINUE":372},"invisibleRelayCount":1534,"bezierPointCount":0,"baseWeight":1196350,"perfectNoteWeight":1349750,"liveScoreCoefficientPermil":9,"difficultyLevel":29,"catalogRevision":83,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
+    {"songId":"m0352","difficulty":"easy","susSha256":"d31a500a280011ad6da7d48ef23b950ef59fe649e1135408166277f76d35223c","fullComboNoteCount":220,"counts":{"NORMAL":64,"FLICK":0,"LONG_START":21,"LONG_END":21,"LONG_FLICK_END":0,"LONG_RELAY":3,"LONG_CONTINUE":111},"invisibleRelayCount":0,"bezierPointCount":0,"baseWeight":117400,"perfectNoteWeight":117400,"liveScoreCoefficientPermil":7,"difficultyLevel":3,"catalogRevision":84,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
+    {"songId":"m0352","difficulty":"normal","susSha256":"097fddec319e17d1df3669068e794f826ea24a95b1b1f3a3959211570a309dd9","fullComboNoteCount":364,"counts":{"NORMAL":186,"FLICK":0,"LONG_START":32,"LONG_END":32,"LONG_FLICK_END":0,"LONG_RELAY":13,"LONG_CONTINUE":101},"invisibleRelayCount":0,"bezierPointCount":0,"baseWeight":261400,"perfectNoteWeight":261400,"liveScoreCoefficientPermil":7,"difficultyLevel":11,"catalogRevision":84,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
+    {"songId":"m0352","difficulty":"hard","susSha256":"f39acc366a08d344740cdad5d5dc80551d1df9f9dcaedb862558677c0e58ce5d","fullComboNoteCount":640,"counts":{"NORMAL":321,"FLICK":30,"LONG_START":74,"LONG_END":63,"LONG_FLICK_END":11,"LONG_RELAY":25,"LONG_CONTINUE":116},"invisibleRelayCount":15,"bezierPointCount":0,"baseWeight":514600,"perfectNoteWeight":516100,"liveScoreCoefficientPermil":7,"difficultyLevel":19,"catalogRevision":84,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"},
+    {"songId":"m0352","difficulty":"expert","susSha256":"71b330468b4d87a0db9f5734884934cf17252ed90ed69c8440b88122d550b0cb","fullComboNoteCount":1064,"counts":{"NORMAL":558,"FLICK":33,"LONG_START":135,"LONG_END":104,"LONG_FLICK_END":31,"LONG_RELAY":84,"LONG_CONTINUE":119},"invisibleRelayCount":227,"bezierPointCount":0,"baseWeight":882950,"perfectNoteWeight":905650,"liveScoreCoefficientPermil":7,"difficultyLevel":26,"catalogRevision":84,"masterCommit":"5517e40b931fec10253f5b850989346518e233c2"}
   ]
 }

src/lib/data/exact-chart-catalog.json

@@ -16618,6 +16618,90 @@
       "releaseTime": 1789988400000,
       "path": "/data/charts/m0351.normal.json"
     },
+    {
+      "songId": "m0352",
+      "title": "64.",
+      "difficulty": "easy",
+      "difficultyLevel": 3,
+      "durationSeconds": 136,
+      "scoreRatio": 51.768233530293685,
+      "scoreCalibrationSource": "formula-v1",
+      "scoreFormula": {
+        "perfectNoteWeight": 117400,
+        "liveScoreCoefficientPermil": 7,
+        "difficultyLevel": 3
+      },
+      "totalNotes": 220,
+      "singerType": "solo",
+      "singerCharacterIds": [
+        "chr-03005"
+      ],
+      "releaseTime": 1790334000000,
+      "path": "/data/charts/m0352.easy.json"
+    },
+    {
+      "songId": "m0352",
+      "title": "64.",
+      "difficulty": "expert",
+      "difficultyLevel": 26,
+      "durationSeconds": 136,
+      "scoreRatio": 343.2963117395095,
+      "scoreCalibrationSource": "formula-v1",
+      "scoreFormula": {
+        "perfectNoteWeight": 905650,
+        "liveScoreCoefficientPermil": 7,
+        "difficultyLevel": 26
+      },
+      "totalNotes": 1064,
+      "singerType": "solo",
+      "singerCharacterIds": [
+        "chr-03005"
+      ],
+      "releaseTime": 1790334000000,
+      "path": "/data/charts/m0352.expert.json"
+    },
+    {
+      "songId": "m0352",
+      "title": "64.",
+      "difficulty": "hard",
+      "difficultyLevel": 19,
+      "durationSeconds": 136,
+      "scoreRatio": 204.36366516195457,
+      "scoreCalibrationSource": "formula-v1",
+      "scoreFormula": {
+        "perfectNoteWeight": 516100,
+        "liveScoreCoefficientPermil": 7,
+        "difficultyLevel": 19
+      },
+      "totalNotes": 640,
+      "singerType": "solo",
+      "singerCharacterIds": [
+        "chr-03005"
+      ],
+      "releaseTime": 1790334000000,
+      "path": "/data/charts/m0352.hard.json"
+    },
+    {
+      "songId": "m0352",
+      "title": "64.",
+      "difficulty": "normal",
+      "difficultyLevel": 11,
+      "durationSeconds": 136,
+      "scoreRatio": 109.07118417758491,
+      "scoreCalibrationSource": "formula-v1",
+      "scoreFormula": {
+        "perfectNoteWeight": 261400,
+        "liveScoreCoefficientPermil": 7,
+        "difficultyLevel": 11
+      },
+      "totalNotes": 364,
+      "singerType": "solo",
+      "singerCharacterIds": [
+        "chr-03005"
+      ],
+      "releaseTime": 1790334000000,
+      "path": "/data/charts/m0352.normal.json"
+    },
     {
       "songId": "m0353",
       "title": "Night Loop",

src/lib/engine/event-optimization.test.ts

@@ -39,6 +39,20 @@ test('신규 카드 공통 보너스와 현재 챕터 멤버 보너스를 따로
   assert.equal(eventChallengeSongScoreBonusPercent(aki, 'm0349', [aki.featuredCardIds[1]]), 0);
 });
 
+test('9월 25일 20시부터 아냐와 64.가 마지막 챕터 보너스를 받는다', () => {
+  const before = activeEventAt(events, Date.parse('2026-09-25T10:59:59.999Z'))!;
+  const anya = activeEventAt(events, Date.parse('2026-09-25T11:00:00.000Z'))!;
+  const featuredAnya = { id: 'card-03005-5-uniq-0084-00', characterId: 'chr-03005', rarity: 5 };
+
+  assert.equal(before.id, 'marathon_event-relay-002-chapter-03');
+  assert.equal(anya.id, 'marathon_event-relay-002-chapter-04');
+  assert.deepEqual(anya.bonusCharacterIds, ['chr-03005']);
+  assert.deepEqual(anya.challengeSongBonusCardIds, { m0352: [featuredAnya.id] });
+  assert.equal(eventBonusBreakdown(anya, [featuredAnya], () => 0).totalPercent, 100);
+  assert.equal(eventChallengeSongScoreBonusPercent(anya, 'm0352', [featuredAnya.id]), 10);
+  assert.equal(eventChallengeSongScoreBonusPercent(before, 'm0352', [featuredAnya.id]), 0);
+});
+
 test('이벤트 기간 안에서만 진행 중 이벤트를 반환한다', () => {
   assert.equal(activeEventAt(events, Date.parse('2026-08-29T02:59:59.999Z')), null);
   assert.equal(activeEventAt(events, Date.parse('2026-08-31T00:00:00.000Z'))?.id, currentEvent.id);

src/routes/combination/+page.svelte

@@ -352,6 +352,11 @@
     try {
       const state = JSON.parse(localStorage.getItem(STORAGE_KEY) ?? 'null') as SavedState | null;
       if (state) applySavedState(state);
+      if (eventMode && currentEvent) {
+        const challengeSongId = Object.keys(currentEvent.challengeSongBonusCardIds)
+          .find((songId) => songs.some((song) => song.id === songId));
+        if (challengeSongId) selectedSongId = challengeSongId;
+      }
     } catch {
       localStorage.removeItem(STORAGE_KEY);
     }