From a566db99e4878933326edac84b13290c13aec62f Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 09:01:55 +0900
Subject: [PATCH 1/7] =?UTF-8?q?[Fix]=20=EC=9E=90=EC=A0=95=20=EC=9D=B4?=
 =?UTF-8?q?=ED=9B=84=20=EC=8B=9C=EB=B0=9C=20=EC=97=B4=EC=B0=A8=20=EC=8B=9C?=
 =?UTF-8?q?=EA=B0=81=EC=9D=84=20=EC=9A=B4=ED=96=89=EC=9D=BC=20=EA=B2=BD?=
 =?UTF-8?q?=EA=B3=84(03:00)=20=EA=B8=B0=EC=A4=80=2024=EC=8B=9C=20=EC=9D=B4?=
 =?UTF-8?q?=ED=9B=84=20=EC=B4=88=EB=A1=9C=20=EC=A0=81=EC=9E=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 인천 1·2호선 공식 FILE과 KRIC 역별 API(GTX-A·의정부)가 00시대로 적은 자정 이후 막차 시각을
  전날 운행일의 심야 시각(86400초 이상)으로 적재한다. 스냅샷은 바꾸지 않는다.
- 전국 후보 조립 뒤 운행일 경계 앞 정차 시각이 남으면 후보 생성을 실패시킨다.

Closes #918
---
 tools/ci/data-test-ownership.json             |  5 +++
 .../lib/kric-station-lines-timetable.mjs      |  8 +++-
 .../lib/kric-station-lines-timetable.test.mjs | 22 ++++++++--
 tools/datapack/lib/service-day-seconds.mjs    | 20 +++++++++
 .../datapack/lib/service-day-seconds.test.mjs | 42 +++++++++++++++++++
 .../materialize-incheon-timetable.mjs         |  6 ++-
 .../materialize-incheon-timetable.test.mjs    | 10 +++++
 .../prepare-nationwide-candidate-run.mjs      |  8 ++++
 .../prepare-nationwide-candidate-run.test.mjs |  3 ++
 9 files changed, 118 insertions(+), 6 deletions(-)
 create mode 100644 tools/datapack/lib/service-day-seconds.mjs
 create mode 100644 tools/datapack/lib/service-day-seconds.test.mjs

diff --git a/tools/ci/data-test-ownership.json b/tools/ci/data-test-ownership.json
index d30ac58b2..e0bf376a6 100644
--- a/tools/ci/data-test-ownership.json
+++ b/tools/ci/data-test-ownership.json
@@ -299,6 +299,10 @@
     "data913": {
       "issueUrl": "https://github.com/AquilaXk/easysubway-data/issues/913",
       "title": "[Fix] 데이터팩·서버 번들 만료 시각에 시간표 원천 신선도 반영"
+    },
+    "data918": {
+      "issueUrl": "https://github.com/AquilaXk/easysubway-data/issues/918",
+      "title": "[Fix] 인천 1·2호선 자정 이후 열차가 86400초 이상과 0시대 값으로 섞여 표현되는지 원천·컴파일러 확인"
     }
   },
   "workflows": {
@@ -536,6 +540,7 @@
     {"path":"tools/datapack/lib/kric-station-timetable-api-trips.test.mjs","semanticOwner":"data903","classes":["required-pr"],"durationMs":40},
     {"path":"tools/datapack/lib/kric-korail-timetable.test.mjs","semanticOwner":"data903","classes":["required-pr"],"durationMs":60},
     {"path":"tools/datapack/lib/kric-station-lines-timetable.test.mjs","semanticOwner":"data903","classes":["required-pr"],"durationMs":60},
+    {"path":"tools/datapack/lib/service-day-seconds.test.mjs","semanticOwner":"data918","classes":["required-pr"],"durationMs":10},
     {"path":"tools/datapack/lib/kric-retained-gwangju-projection.test.mjs","semanticOwner":"data913","classes":["required-pr"],"durationMs":60},
     {"path":"tools/datapack/lib/map-catalog-oci-publisher.test.mjs","semanticOwner":"data535","classes":["required-pr"],"durationMs":7},
     {"path":"tools/datapack/lib/molit-svg-provider-identity.test.mjs","semanticOwner":"data29","classes":["required-pr"],"durationMs":2},
diff --git a/tools/datapack/lib/kric-station-lines-timetable.mjs b/tools/datapack/lib/kric-station-lines-timetable.mjs
index 056ed9f7d..51f356af0 100644
--- a/tools/datapack/lib/kric-station-lines-timetable.mjs
+++ b/tools/datapack/lib/kric-station-lines-timetable.mjs
@@ -3,6 +3,7 @@ import { createHash } from "node:crypto";
 import { codepointCompare } from "../../lib/codepoint-compare.mjs";
 import { KRIC_API_STATION_TIMETABLE_BINDINGS } from "./kric-station-timetable-api-trips.mjs";
 import { canonicalJson } from "./manifest-validation.mjs";
+import { serviceDaySeconds } from "./service-day-seconds.mjs";
 
 // #903: kric-subway-timetable-station-lines 등록기가 커밋한 파생 스냅샷(역별 KRIC API 재구성 trip)을
 // 공용 적재기(materializeOfficialLineTimetables) 입력으로 바꾼다. 스냅샷 내용 해시를 다시 확인하고 trip은 바꾸지 않는다.
@@ -37,7 +38,12 @@ export function kricStationLinesOfficialTimetable(snapshot, evidence, { bindings
     lineId: trip.lineId, routeKey: lnCdOf.get(trip.lineId) ?? fail("LINE", trip.lineId), providerTripKey: trip.providerTripKey,
     trainNumber: trip.provenance.trainNumber, serviceDayKind: SERVICE_DAY_KIND[trip.serviceDayKind] ?? fail("SERVICE_DAY", trip.providerTripKey),
     sourceDayKey: trip.provenance.dayCd, servicePattern: trip.servicePattern, headsign: trip.headsign,
-    sourceRowSha256: trip.sourceRowSha256, stops: trip.stops,
+    sourceRowSha256: trip.sourceRowSha256,
+    // #918: KRIC 응답(HHMMSS)이 00시대로 적은 자정 이후 시발 열차 시각은 전날 운행일의 심야 시각이다(운행일 경계 03:00).
+    // 스냅샷 trip은 바꾸지 않고 적재 입력에서만 운행일 초로 표현한다.
+    stops: trip.stops.map(({ stationName, arrivalSeconds, departureSeconds }) => ({
+      stationName, arrivalSeconds: serviceDaySeconds(arrivalSeconds), departureSeconds: serviceDaySeconds(departureSeconds),
+    })),
   }));
   const quarantine = snapshot.quarantine.map((row) => {
     const [, trainNumber, dayCd] = row.providerTripKey.split("|");
diff --git a/tools/datapack/lib/kric-station-lines-timetable.test.mjs b/tools/datapack/lib/kric-station-lines-timetable.test.mjs
index 4a41061a8..827d90ac5 100644
--- a/tools/datapack/lib/kric-station-lines-timetable.test.mjs
+++ b/tools/datapack/lib/kric-station-lines-timetable.test.mjs
@@ -13,15 +13,14 @@ const trip = (trainNumber, dayCd, kind) => ({
   provenance: { lnCd: "B1", trainNumber, dayCd, direction: "ASC" },
 });
 
-function snapshotAndEvidence(quarantine = []) {
-  const trips = [trip("1001", "8", "WEEKDAY"), trip("3001", "9", "SATURDAY_SUNDAY_HOLIDAY")];
+function snapshotAndEvidence(quarantine = [], trips = [trip("1001", "8", "WEEKDAY"), trip("3001", "9", "SATURDAY_SUNDAY_HOLIDAY")]) {
   const content = { schemaVersion: 1, artifactKind: "kric-station-timetable-snapshot", sourceId: "kric-subway-timetable-station-lines",
     catalogProviderId: "provider:kric-subway-timetable", capturedAt: "2026-10-03T00:30:00.000Z", collectedAt: "2026-10-03T00:31:00.000Z",
     raw: { rawSha256: "a".repeat(64), byteSize: 1, rawObjectUri: "oci://x", publicationReceiptSha256: "b".repeat(64) },
     serviceDayPolicy: "policy", lines: [], trips, quarantine };
   const contentSha256 = sha(canonicalJson(content));
   const snapshot = { ...content, snapshotId: "kric-subway-timetable-station-lines-20261003", contentSha256 };
-  const evidence = { snapshotId: snapshot.snapshotId, contentSha256, rawSha256: "a".repeat(64), tripsSha256: sha(JSON.stringify(trips)), tripCount: 2 };
+  const evidence = { snapshotId: snapshot.snapshotId, contentSha256, rawSha256: "a".repeat(64), tripsSha256: sha(JSON.stringify(trips)), tripCount: trips.length };
   return { snapshot, evidence };
 }
 
@@ -56,3 +55,20 @@ test("격리 행의 운행일은 dayCd 8=평일, 9=주말·휴일만 받고 그
   assert.deepEqual(kinds("9"), ["WEEKEND_HOLIDAY"]);
   for (const dayCd of ["7", "1", ""]) assert.throws(() => kinds(dayCd), /KRIC_STATION_LINES_TIMETABLE_SERVICE_DAY/u);
 });
+
+test("#918 자정 이후 시발 열차의 00~02시 시각은 전날 운행일의 24시 이후 초로 적재한다(스냅샷은 바꾸지 않는다)", () => {
+  const timed = (trainNumber, departure, arrival) => ({ ...trip(trainNumber, "8", "WEEKDAY"),
+    stops: [{ stationName: "가역(부역)", arrivalSeconds: null, departureSeconds: departure }, { stationName: "나역", arrivalSeconds: arrival, departureSeconds: null }] });
+  // 원천 KRIC 응답(HHMMSS)은 00시대로 적는다. 자정을 넘는 열차는 스냅샷에 이미 86400초 이상으로 이어져 있다.
+  const { snapshot, evidence } = snapshotAndEvidence([], [timed("1901", 360, 840), timed("1899", 86_040, 86_460), timed("1001", 21_600, 21_780)]);
+  const before = structuredClone(snapshot);
+  const { provider } = kricStationLinesOfficialTimetable(snapshot, evidence, { bindings: BINDINGS });
+  const stops = Object.fromEntries(provider.trips.map(({ trainNumber, stops: tripStops }) => [trainNumber,
+    tripStops.map(({ arrivalSeconds, departureSeconds }) => [arrivalSeconds, departureSeconds])]));
+  assert.deepEqual(stops, {
+    1001: [[null, 21_600], [21_780, null]],
+    1899: [[null, 86_040], [86_460, null]],
+    1901: [[null, 86_760], [87_240, null]],
+  });
+  assert.deepEqual(snapshot, before);
+});
diff --git a/tools/datapack/lib/service-day-seconds.mjs b/tools/datapack/lib/service-day-seconds.mjs
new file mode 100644
index 000000000..ddf3e4f4f
--- /dev/null
+++ b/tools/datapack/lib/service-day-seconds.mjs
@@ -0,0 +1,20 @@
+// #918: 운행일 경계. 시간표 원천은 자정 이후 시각을 24시 미만(00:00~02:59)으로 적는다.
+// 그 시각은 전날 운행일의 심야 시각이므로 86400초 이상으로 표현한다.
+// 근거(2026-10-04 실측): 인천 1·2호선 공식 FILE 8개는 00시대 시발 행을 모두 파일 끝(23시대 시발 뒤)에 두고
+// 02~04시 시각이 하나도 없다. KRIC 역별 API(GTX-A·의정부·에버라인·김포골드·부산김해)도 01~04시 시발 열차가 없다.
+// normalize-kric-timetable.mjs(03:00)와 같은 경계를 쓴다.
+export const SERVICE_DAY_BOUNDARY_SECONDS = 3 * 3_600;
+const SECONDS_PER_DAY = 86_400;
+
+/** 원천 시각(초)을 운행일 시각(초)으로 바꾼다. null은 시각 없음이다. */
+export function serviceDaySeconds(seconds) {
+  if (seconds === null) return null;
+  if (!Number.isSafeInteger(seconds) || seconds < 0) throw new Error(`SERVICE_DAY_SECONDS_INVALID: ${seconds}`);
+  return seconds < SERVICE_DAY_BOUNDARY_SECONDS ? seconds + SECONDS_PER_DAY : seconds;
+}
+
+/** 운행일 경계 앞 시각이 남은 stop_time 행을 돌려준다. 비어 있어야 팩을 만들 수 있다. */
+export function serviceDayBoundaryViolations(stopTimes) {
+  const early = (seconds) => typeof seconds === "number" && seconds < SERVICE_DAY_BOUNDARY_SECONDS;
+  return stopTimes.filter(({ arrivalSeconds, departureSeconds }) => early(arrivalSeconds) || early(departureSeconds));
+}
diff --git a/tools/datapack/lib/service-day-seconds.test.mjs b/tools/datapack/lib/service-day-seconds.test.mjs
new file mode 100644
index 000000000..6c92edc6a
--- /dev/null
+++ b/tools/datapack/lib/service-day-seconds.test.mjs
@@ -0,0 +1,42 @@
+import assert from "node:assert/strict";
+import { test } from "node:test";
+
+import {
+  SERVICE_DAY_BOUNDARY_SECONDS,
+  serviceDayBoundaryViolations,
+  serviceDaySeconds,
+} from "./service-day-seconds.mjs";
+
+// #918: 원천이 24시 미만으로 적은 00:00~02:59 시각은 전날 운행일의 심야 시각이다.
+// 운행일 경계는 03:00이고, 그 앞의 시각은 86400초 이상으로 표현한다.
+
+test("운행일 경계(03:00) 앞 시각은 같은 운행일의 24시 이후 초로 옮기고, 경계 이후 시각은 그대로 둔다", () => {
+  assert.equal(SERVICE_DAY_BOUNDARY_SECONDS, 10_800);
+  assert.equal(serviceDaySeconds(0), 86_400);
+  assert.equal(serviceDaySeconds(570), 86_970);
+  assert.equal(serviceDaySeconds(10_799), 97_199);
+  assert.equal(serviceDaySeconds(10_800), 10_800);
+  assert.equal(serviceDaySeconds(20_100), 20_100);
+  assert.equal(serviceDaySeconds(86_430), 86_430);
+  assert.equal(serviceDaySeconds(null), null);
+});
+
+test("시각이 정수 초가 아니면 운행일 시각으로 바꾸지 않고 실패한다", () => {
+  for (const value of [-1, 1.5, "570", undefined, Number.NaN]) {
+    assert.throws(() => serviceDaySeconds(value), /SERVICE_DAY_SECONDS_INVALID/u);
+  }
+});
+
+test("운행일 경계 앞 정차 시각이 남은 stop_time을 모두 찾는다", () => {
+  const violations = serviceDayBoundaryViolations([
+    { tripId: "trip-a", stopSequence: 1, arrivalSeconds: 86_430, departureSeconds: 86_430 },
+    { tripId: "trip-b", stopSequence: 1, arrivalSeconds: 570, departureSeconds: 570 },
+    { tripId: "trip-b", stopSequence: 2, arrivalSeconds: 10_790, departureSeconds: 10_800 },
+    { tripId: "trip-c", stopSequence: 1, arrivalSeconds: 19_800, departureSeconds: 19_800 },
+  ]);
+  assert.deepEqual(violations, [
+    { tripId: "trip-b", stopSequence: 1, arrivalSeconds: 570, departureSeconds: 570 },
+    { tripId: "trip-b", stopSequence: 2, arrivalSeconds: 10_790, departureSeconds: 10_800 },
+  ]);
+  assert.deepEqual(serviceDayBoundaryViolations([]), []);
+});
diff --git a/tools/datapack/materialize-incheon-timetable.mjs b/tools/datapack/materialize-incheon-timetable.mjs
index e97b900c3..93e1826ca 100644
--- a/tools/datapack/materialize-incheon-timetable.mjs
+++ b/tools/datapack/materialize-incheon-timetable.mjs
@@ -13,6 +13,7 @@ import { isDeepStrictEqual } from "node:util";
 
 import { INCHEON_TIMETABLE_LINES } from "./collect-incheon-timetable.mjs";
 import { validateIncheonStationInfoSnapshot } from "./collect-incheon-station-info.mjs";
+import { serviceDaySeconds } from "./lib/service-day-seconds.mjs";
 
 const ISSUE = 2488;
 const MATERIALIZER = "tools/datapack/materialize-incheon-timetable.mjs";
@@ -412,8 +413,9 @@ function addRoutesAndTrips(pack, line, stationIdByLineCode) {
         stopSequence: index + 1,
         stationId,
         lineId: config.lineId,
-        arrivalSeconds: stop.a,
-        departureSeconds: stop.d,
+        // #918: 공식 FILE이 00시대로 적은 자정 이후 시각은 전날 운행일의 심야 시각이다(운행일 경계 03:00).
+        arrivalSeconds: serviceDaySeconds(stop.a),
+        departureSeconds: serviceDaySeconds(stop.d),
         pickupType: index === trip.stops.length - 1 ? 1 : 0,
         dropOffType: index === 0 ? 1 : 0,
       }, tripProvenance));
diff --git a/tools/datapack/materialize-incheon-timetable.test.mjs b/tools/datapack/materialize-incheon-timetable.test.mjs
index 5e07b6974..d655b88c1 100644
--- a/tools/datapack/materialize-incheon-timetable.test.mjs
+++ b/tools/datapack/materialize-incheon-timetable.test.mjs
@@ -248,6 +248,16 @@ test("인천 1·2호선 공식 timetable을 1414 trip·40898 stop_time·WEEK/HOL
 
   const maxArrival = Math.max(...stopTimes.map(({ arrivalSeconds }) => arrivalSeconds));
   assert.ok(maxArrival > 86_400, `expected a post-midnight trip, got max ${maxArrival}`);
+
+  // #918: 공식 FILE은 자정 이후 막차를 00시대로 적고 파일 끝에 둔다(02~04시 시각 없음).
+  // 운행일 경계(03:00) 앞 시각은 전날 운행일의 심야 시각이므로 86400초 이상으로 싣는다.
+  assert.deepEqual(stopTimes.filter(({ arrivalSeconds, departureSeconds }) =>
+    arrivalSeconds < 10_800 || departureSeconds < 10_800), []);
+  const bakchon = (tripId) => stopTimes.find((row) => row.tripId === tripId && row.stationId === "station-f497b2d7043f");
+  assert.deepEqual(
+    ["1301", "1303", "1305", "1307", "1309"].map((trainNo) => bakchon(`trip-incheon-1-dn-week-${trainNo}`).departureSeconds),
+    [86_430, 87_120, 87_810, 88_530, 89_070],
+  );
 });
 
 test("인천 timetable materializer는 snapshot·inventory·freshness·topology lineage 변조를 fail-closed한다", async () => {
diff --git a/tools/datapack/prepare-nationwide-candidate-run.mjs b/tools/datapack/prepare-nationwide-candidate-run.mjs
index e126054f2..da642afbc 100644
--- a/tools/datapack/prepare-nationwide-candidate-run.mjs
+++ b/tools/datapack/prepare-nationwide-candidate-run.mjs
@@ -19,6 +19,7 @@ import { outOfStationTransferNetworkEdges } from "./build-datapack.mjs";
 import { HOLIDAYS_2026, materializeIncheonTimetable } from "./materialize-incheon-timetable.mjs";
 import { buildNationwidePlatformInfoMap } from "./lib/nationwide-platform-resolver.mjs";
 import { integrateRegionalTimetables } from "./lib/regional-timetable-integrator.mjs";
+import { serviceDayBoundaryViolations } from "./lib/service-day-seconds.mjs";
 import { deriveFreshnessExpiresAt } from "./freshness-policy.mjs";
 import { deriveApprovedItxTopologyEvidencePath } from "./activate-current-source-set.mjs";
 import { officialOdFareAdmissionsBySource, officialOdFareQuoteSetHash } from "./lib/official-od-fare-evidence.mjs";
@@ -1577,6 +1578,13 @@ export async function prepareNationwideCandidate({
       ...gwangjuTopologySource.coverageScope[field]])].sort((left, right) => (left < right ? -1 : left > right ? 1 : 0));
   }
 
+  // #918: 모든 시간표 원천을 합친 뒤 운행일 경계(03:00) 앞 정차 시각이 남으면 후보를 만들지 않는다.
+  const serviceDayBoundaryRows = serviceDayBoundaryViolations(finalPack.transitStopTimes);
+  if (serviceDayBoundaryRows.length > 0) {
+    const tripIds = [...new Set(serviceDayBoundaryRows.map(({ tripId }) => tripId))];
+    throw new Error(`nationwide candidate stop times precede the 03:00 service-day boundary: ${tripIds.length} trips (${tripIds.slice(0, 5).join(", ")})`);
+  }
+
   // #855: 대전·광주 원천은 역별 시각 하나만 준다. 원천 정차 2개 이상으로 열차를 만들 수 없는
   // 원천 시각은 팩에 싣지 않고 사유·식별자·개수를 격리 증거로 남긴다.
   const timetableQuarantine = [
diff --git a/tools/datapack/prepare-nationwide-candidate-run.test.mjs b/tools/datapack/prepare-nationwide-candidate-run.test.mjs
index 9e6218025..716c59699 100644
--- a/tools/datapack/prepare-nationwide-candidate-run.test.mjs
+++ b/tools/datapack/prepare-nationwide-candidate-run.test.mjs
@@ -7,6 +7,7 @@ import { fileURLToPath } from "node:url";
 
 import { expandExternalStopTimes } from "./lib/external-stop-times.mjs";
 import { canonicalJson } from "./lib/manifest-validation.mjs";
+import { serviceDayBoundaryViolations } from "./lib/service-day-seconds.mjs";
 import { topologySnapshotFreshUntil } from "./lib/topology-freshness-cutover.mjs";
 
 import { admitOutOfStationTransferLinks, officialTransferEndpointRecords, packOutOfStationTransferLinks, applyMeasuredTransferTimePrecedence, assertCandidateClockAfterRawStorage, prepareNationwideCandidate, resolveSeoulMeasuredTransferMetrics, formatPlatformInfo, gwangjuFacilityState, regionalFacilityTypeCounts, busanFacilityState, officialTransferMetricsByDirection, resolveBusanTransferMetrics, resolveMolitTransferSnapshot, resolveNationwideCandidateInputSnapshots } from "./prepare-nationwide-candidate-run.mjs";
@@ -482,6 +483,8 @@ test("prepareNationwideCandidate binds platform metadata onto stationLines", asy
   });
 
   const pack = result.finalPack;
+  // #918: 조립한 전국 팩에는 운행일 경계(03:00) 앞 정차 시각이 남지 않는다(인천 1·2호선, KRIC GTX-A·의정부 포함).
+  assert.deepEqual(serviceDayBoundaryViolations(pack.transitStopTimes), []);
   const targetLine = pack.stationLines.find(
     (sl) => sl.stationId === "station-00089f8f97de" && sl.lineId === "line-558d0bd8312d"
   );

From 87d3731064c195a01b90e55c60847a5bbb156dfb Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 09:37:13 +0900
Subject: [PATCH 2/7] =?UTF-8?q?[Fix]=20=EC=9A=B4=ED=96=89=EC=9D=BC=20?=
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정본 팩 JSON의 인천 시간표는 build-datapack이 materializer로 다시 만들어 비교한다(수도권·전국 정본 팩 모두).
materializer 출력을 바꾸면 해시가 여러 증거에 결속된 수도권 정본 팩까지 다시 만들어야 하므로,
정본 팩은 원천 시각을 그대로 두고 transit_stop_times를 SQLite에 쓸 때 운행일 초로 바꾼다.

- build-datapack: transit_stop_times를 serviceDayStopTimes로 바꿔 쓴다(인천·KRIC 역별 노선 등 원천과 무관).
- 바꾼 뒤 trip 안 시각이 줄어들면 validate-datapack의 기존 순서 검사가 거부한다.
- materializer·KRIC 역별 adapter·후보 조립 검사 변경은 되돌린다.
- 문서 파편(build-datapack.mjs blob)을 갱신한다.

Refs #918
---
 .../documentation/documentation-fragment.json | 70 +++++++++----------
 tools/datapack/build-datapack.mjs             |  5 +-
 .../lib/kric-station-lines-timetable.mjs      |  8 +--
 .../lib/kric-station-lines-timetable.test.mjs | 22 +-----
 tools/datapack/lib/service-day-seconds.mjs    | 23 +++---
 .../datapack/lib/service-day-seconds.test.mjs | 34 +++++----
 .../materialize-incheon-timetable.mjs         |  6 +-
 .../materialize-incheon-timetable.test.mjs    | 24 ++++---
 .../prepare-nationwide-candidate-run.mjs      |  8 ---
 .../prepare-nationwide-candidate-run.test.mjs |  3 -
 10 files changed, 96 insertions(+), 107 deletions(-)

diff --git a/contracts/documentation/documentation-fragment.json b/contracts/documentation/documentation-fragment.json
index eacd092b2..113978624 100644
--- a/contracts/documentation/documentation-fragment.json
+++ b/contracts/documentation/documentation-fragment.json
@@ -2,9 +2,9 @@
   "$schema": "https://raw.githubusercontent.com/AquilaXk/easysubway/32ce139789b97ce1f0c9bb059966cfc19f497480/contracts/documentation/documentation-fragment.schema.json",
   "schemaVersion": 1,
   "repository": "AquilaXk/easysubway-data",
-  "sourceSha": "cc6dd6e670ea53290a80171006120b2a8a6669a3",
+  "sourceSha": "a566db99e4878933326edac84b13290c13aec62f",
   "status": "ACTIVE",
-  "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
+  "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
   "verificationEvidence": [
     "https://github.com/AquilaXk/easysubway-data/issues/237",
     "https://github.com/AquilaXk/easysubway-data/issues/281",
@@ -38,7 +38,7 @@
       "documentationFamily": "QUALITY_TEST",
       "kindCandidate": "DATA_REQUIRED_CI_WORKFLOW",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:.github/workflows/ci.yml:1a692be89eb795b44c7c0662208b9d3c33923134",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:.github/workflows/ci.yml:1a692be89eb795b44c7c0662208b9d3c33923134",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/25",
@@ -62,8 +62,8 @@
       "reviewTrigger": [
         "event:workflow-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:.github/workflows/ci.yml:1a692be89eb795b44c7c0662208b9d3c33923134",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:.github/workflows/ci.yml:1a692be89eb795b44c7c0662208b9d3c33923134",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/25"
@@ -88,7 +88,7 @@
       "documentationFamily": "RELEASE_CHANGE",
       "kindCandidate": "DATAPACK_IMMUTABLE_RELEASE_WORKFLOW",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:.github/workflows/datapack-release.yml:fe67cb90c0778888ed2196785dcd8ca5611b89e5",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:.github/workflows/datapack-release.yml:fe67cb90c0778888ed2196785dcd8ca5611b89e5",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/54",
@@ -113,8 +113,8 @@
       "reviewTrigger": [
         "event:release-workflow-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:.github/workflows/datapack-release.yml:fe67cb90c0778888ed2196785dcd8ca5611b89e5",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:.github/workflows/datapack-release.yml:fe67cb90c0778888ed2196785dcd8ca5611b89e5",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/54"
@@ -139,7 +139,7 @@
       "documentationFamily": "PRODUCT",
       "kindCandidate": "DATA_PRODUCT_README",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:README.md:7e9e4208607c224bb8a04852be26daf2ac93b438",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:README.md:7e9e4208607c224bb8a04852be26daf2ac93b438",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/38",
@@ -166,8 +166,8 @@
       "reviewTrigger": [
         "event:source-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:README.md:7e9e4208607c224bb8a04852be26daf2ac93b438",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:README.md:7e9e4208607c224bb8a04852be26daf2ac93b438",
       "verificationMethod": "owner-review",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/38"
@@ -192,7 +192,7 @@
       "documentationFamily": "ARCHITECTURE",
       "kindCandidate": "THREE_ARTIFACT_COMPONENT_BOUNDARY",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/bundle-component-contract.json:854a53ccf773a00b3c69bbd0b336854061cb06f2",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/bundle-component-contract.json:854a53ccf773a00b3c69bbd0b336854061cb06f2",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/41",
@@ -217,8 +217,8 @@
       "reviewTrigger": [
         "event:artifact-boundary-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/bundle-component-contract.json:854a53ccf773a00b3c69bbd0b336854061cb06f2",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/bundle-component-contract.json:854a53ccf773a00b3c69bbd0b336854061cb06f2",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/41"
@@ -243,7 +243,7 @@
       "documentationFamily": "GOVERNANCE_EVIDENCE",
       "kindCandidate": "DATAPACK_MOBILE_COMPATIBILITY_MATRIX",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/compatibility-matrix.json:6fbf25901c16c019c4f9cf6ea3da2975caf5c480",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/compatibility-matrix.json:6fbf25901c16c019c4f9cf6ea3da2975caf5c480",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/54",
@@ -267,8 +267,8 @@
       "reviewTrigger": [
         "event:compatibility-contract-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/compatibility-matrix.json:6fbf25901c16c019c4f9cf6ea3da2975caf5c480",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/compatibility-matrix.json:6fbf25901c16c019c4f9cf6ea3da2975caf5c480",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/54"
@@ -293,7 +293,7 @@
       "documentationFamily": "API_CONTRACT",
       "kindCandidate": "SIGNED_DATAPACK_MANIFEST_SCHEMA",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/datapack-manifest.schema.json:6fd7d44ddd72c70fce266663977deecbe6401d91",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/datapack-manifest.schema.json:6fd7d44ddd72c70fce266663977deecbe6401d91",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/38",
@@ -318,8 +318,8 @@
       "reviewTrigger": [
         "event:manifest-schema-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:contracts/datapack/datapack-manifest.schema.json:6fd7d44ddd72c70fce266663977deecbe6401d91",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:contracts/datapack/datapack-manifest.schema.json:6fd7d44ddd72c70fce266663977deecbe6401d91",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/38"
@@ -344,7 +344,7 @@
       "documentationFamily": "ENGINEERING",
       "kindCandidate": "DETERMINISTIC_DATAPACK_BUILDER",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/build-datapack.mjs:5446348b02a088d57093cab8f91e5db3bb1be8d8",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/build-datapack.mjs:5e565c5621d7f6889ac8ccc34ce4539d871d4bf7",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/51",
@@ -368,8 +368,8 @@
       "reviewTrigger": [
         "event:builder-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/build-datapack.mjs:5446348b02a088d57093cab8f91e5db3bb1be8d8",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/build-datapack.mjs:5e565c5621d7f6889ac8ccc34ce4539d871d4bf7",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/51"
@@ -394,7 +394,7 @@
       "documentationFamily": "OPERATIONS_RELIABILITY",
       "kindCandidate": "SOURCE_ADMISSION_OPERATION_CONTRACT",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-admission-runbook.json:86e4b668413bf91b90b4fb9976b485cdd7c56815",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-admission-runbook.json:86e4b668413bf91b90b4fb9976b485cdd7c56815",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/28",
@@ -418,8 +418,8 @@
       "reviewTrigger": [
         "event:source-admission-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-admission-runbook.json:86e4b668413bf91b90b4fb9976b485cdd7c56815",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-admission-runbook.json:86e4b668413bf91b90b4fb9976b485cdd7c56815",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/28"
@@ -444,7 +444,7 @@
       "documentationFamily": "SECURITY_PRIVACY",
       "kindCandidate": "SOURCE_GOVERNANCE_LICENSE_RETENTION_POLICY",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-governance-policy.json:cdacd5175884ae86677c65fa8d249a7da1d23990",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-governance-policy.json:cdacd5175884ae86677c65fa8d249a7da1d23990",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/29",
@@ -468,8 +468,8 @@
       "reviewTrigger": [
         "event:source-governance-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-governance-policy.json:cdacd5175884ae86677c65fa8d249a7da1d23990",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-governance-policy.json:cdacd5175884ae86677c65fa8d249a7da1d23990",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/29"
@@ -494,7 +494,7 @@
       "documentationFamily": "DATA_KNOWLEDGE",
       "kindCandidate": "PRODUCTION_SOURCE_INVENTORY",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-inventory.json:57e3345d47bacc74f23ba82b0f93638d94ef9186",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-inventory.json:57e3345d47bacc74f23ba82b0f93638d94ef9186",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/28",
@@ -519,8 +519,8 @@
       "reviewTrigger": [
         "event:source-freshness-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/datapack/source-inventory.json:57e3345d47bacc74f23ba82b0f93638d94ef9186",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/datapack/source-inventory.json:57e3345d47bacc74f23ba82b0f93638d94ef9186",
       "verificationMethod": "release-audit",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/28"
@@ -545,7 +545,7 @@
       "documentationFamily": "USER_SUPPORT_LEGAL_PUBLIC",
       "kindCandidate": "ROUTE_MAP_LICENSE_DECISION",
       "sourceSurface": "TRACKED",
-      "canonicalIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/route-map/route-map-license-decision.json:272a4bdb05f2bdefb51256ceeed67561d95d8759",
+      "canonicalIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/route-map/route-map-license-decision.json:272a4bdb05f2bdefb51256ceeed67561d95d8759",
       "status": "ACTIVE",
       "ownerRepository": "AquilaXk/easysubway-data",
       "ownerIssue": "https://github.com/AquilaXk/easysubway-data/issues/21",
@@ -569,8 +569,8 @@
       "reviewTrigger": [
         "event:license-decision-change"
       ],
-      "lastVerifiedAt": "2026-10-03T07:46:30.384Z",
-      "lastVerifiedIdentity": "git:cc6dd6e670ea53290a80171006120b2a8a6669a3:tools/route-map/route-map-license-decision.json:272a4bdb05f2bdefb51256ceeed67561d95d8759",
+      "lastVerifiedAt": "2026-10-04T00:37:04.361Z",
+      "lastVerifiedIdentity": "git:a566db99e4878933326edac84b13290c13aec62f:tools/route-map/route-map-license-decision.json:272a4bdb05f2bdefb51256ceeed67561d95d8759",
       "verificationMethod": "contract-test",
       "verificationEvidence": [
         "https://github.com/AquilaXk/easysubway-data/issues/21"
diff --git a/tools/datapack/build-datapack.mjs b/tools/datapack/build-datapack.mjs
index 5446348b0..5e565c562 100644
--- a/tools/datapack/build-datapack.mjs
+++ b/tools/datapack/build-datapack.mjs
@@ -71,6 +71,7 @@ import {
 import { bindStationContacts, loadStationContactInputs } from "./build-station-contacts.mjs";
 import { isCapitalRouteTopologySnapshotId } from "./lib/capital-route-topology-snapshot-id.mjs";
 import { expandExternalStopTimes } from "./lib/external-stop-times.mjs";
+import { serviceDayStopTimes } from "./lib/service-day-seconds.mjs";
 import { deriveFreshnessExpiresAt } from "./freshness-policy.mjs";
 import { validateSourceSnapshotFreshness } from "./validate-source-snapshot-freshness.mjs";
 
@@ -4323,7 +4324,9 @@ export function buildSqlitePack(sqlitePath, schema, pack, officialOdFareAdmissio
           "pickup_type",
           "drop_off_type",
         ],
-        pack.transitStopTimes ?? [],
+        // #918: 원천이 00:00~02:59로 적은 자정 이후 시각은 전날 운행일의 24시 이후 초로 싣는다(운행일 경계 03:00).
+        // 바꾼 뒤 trip 안 시각이 줄어들면(경계를 가로지르는 열차) validate-datapack의 순서 검사가 팩을 거부한다.
+        serviceDayStopTimes(pack.transitStopTimes ?? []),
         (row) => [
           requiredString(row.tripId, "transitStopTimes.tripId"),
           requiredPositiveInteger(row.stopSequence, "transitStopTimes.stopSequence"),
diff --git a/tools/datapack/lib/kric-station-lines-timetable.mjs b/tools/datapack/lib/kric-station-lines-timetable.mjs
index 51f356af0..056ed9f7d 100644
--- a/tools/datapack/lib/kric-station-lines-timetable.mjs
+++ b/tools/datapack/lib/kric-station-lines-timetable.mjs
@@ -3,7 +3,6 @@ import { createHash } from "node:crypto";
 import { codepointCompare } from "../../lib/codepoint-compare.mjs";
 import { KRIC_API_STATION_TIMETABLE_BINDINGS } from "./kric-station-timetable-api-trips.mjs";
 import { canonicalJson } from "./manifest-validation.mjs";
-import { serviceDaySeconds } from "./service-day-seconds.mjs";
 
 // #903: kric-subway-timetable-station-lines 등록기가 커밋한 파생 스냅샷(역별 KRIC API 재구성 trip)을
 // 공용 적재기(materializeOfficialLineTimetables) 입력으로 바꾼다. 스냅샷 내용 해시를 다시 확인하고 trip은 바꾸지 않는다.
@@ -38,12 +37,7 @@ export function kricStationLinesOfficialTimetable(snapshot, evidence, { bindings
     lineId: trip.lineId, routeKey: lnCdOf.get(trip.lineId) ?? fail("LINE", trip.lineId), providerTripKey: trip.providerTripKey,
     trainNumber: trip.provenance.trainNumber, serviceDayKind: SERVICE_DAY_KIND[trip.serviceDayKind] ?? fail("SERVICE_DAY", trip.providerTripKey),
     sourceDayKey: trip.provenance.dayCd, servicePattern: trip.servicePattern, headsign: trip.headsign,
-    sourceRowSha256: trip.sourceRowSha256,
-    // #918: KRIC 응답(HHMMSS)이 00시대로 적은 자정 이후 시발 열차 시각은 전날 운행일의 심야 시각이다(운행일 경계 03:00).
-    // 스냅샷 trip은 바꾸지 않고 적재 입력에서만 운행일 초로 표현한다.
-    stops: trip.stops.map(({ stationName, arrivalSeconds, departureSeconds }) => ({
-      stationName, arrivalSeconds: serviceDaySeconds(arrivalSeconds), departureSeconds: serviceDaySeconds(departureSeconds),
-    })),
+    sourceRowSha256: trip.sourceRowSha256, stops: trip.stops,
   }));
   const quarantine = snapshot.quarantine.map((row) => {
     const [, trainNumber, dayCd] = row.providerTripKey.split("|");
diff --git a/tools/datapack/lib/kric-station-lines-timetable.test.mjs b/tools/datapack/lib/kric-station-lines-timetable.test.mjs
index 827d90ac5..4a41061a8 100644
--- a/tools/datapack/lib/kric-station-lines-timetable.test.mjs
+++ b/tools/datapack/lib/kric-station-lines-timetable.test.mjs
@@ -13,14 +13,15 @@ const trip = (trainNumber, dayCd, kind) => ({
   provenance: { lnCd: "B1", trainNumber, dayCd, direction: "ASC" },
 });
 
-function snapshotAndEvidence(quarantine = [], trips = [trip("1001", "8", "WEEKDAY"), trip("3001", "9", "SATURDAY_SUNDAY_HOLIDAY")]) {
+function snapshotAndEvidence(quarantine = []) {
+  const trips = [trip("1001", "8", "WEEKDAY"), trip("3001", "9", "SATURDAY_SUNDAY_HOLIDAY")];
   const content = { schemaVersion: 1, artifactKind: "kric-station-timetable-snapshot", sourceId: "kric-subway-timetable-station-lines",
     catalogProviderId: "provider:kric-subway-timetable", capturedAt: "2026-10-03T00:30:00.000Z", collectedAt: "2026-10-03T00:31:00.000Z",
     raw: { rawSha256: "a".repeat(64), byteSize: 1, rawObjectUri: "oci://x", publicationReceiptSha256: "b".repeat(64) },
     serviceDayPolicy: "policy", lines: [], trips, quarantine };
   const contentSha256 = sha(canonicalJson(content));
   const snapshot = { ...content, snapshotId: "kric-subway-timetable-station-lines-20261003", contentSha256 };
-  const evidence = { snapshotId: snapshot.snapshotId, contentSha256, rawSha256: "a".repeat(64), tripsSha256: sha(JSON.stringify(trips)), tripCount: trips.length };
+  const evidence = { snapshotId: snapshot.snapshotId, contentSha256, rawSha256: "a".repeat(64), tripsSha256: sha(JSON.stringify(trips)), tripCount: 2 };
   return { snapshot, evidence };
 }
 
@@ -55,20 +56,3 @@ test("격리 행의 운행일은 dayCd 8=평일, 9=주말·휴일만 받고 그
   assert.deepEqual(kinds("9"), ["WEEKEND_HOLIDAY"]);
   for (const dayCd of ["7", "1", ""]) assert.throws(() => kinds(dayCd), /KRIC_STATION_LINES_TIMETABLE_SERVICE_DAY/u);
 });
-
-test("#918 자정 이후 시발 열차의 00~02시 시각은 전날 운행일의 24시 이후 초로 적재한다(스냅샷은 바꾸지 않는다)", () => {
-  const timed = (trainNumber, departure, arrival) => ({ ...trip(trainNumber, "8", "WEEKDAY"),
-    stops: [{ stationName: "가역(부역)", arrivalSeconds: null, departureSeconds: departure }, { stationName: "나역", arrivalSeconds: arrival, departureSeconds: null }] });
-  // 원천 KRIC 응답(HHMMSS)은 00시대로 적는다. 자정을 넘는 열차는 스냅샷에 이미 86400초 이상으로 이어져 있다.
-  const { snapshot, evidence } = snapshotAndEvidence([], [timed("1901", 360, 840), timed("1899", 86_040, 86_460), timed("1001", 21_600, 21_780)]);
-  const before = structuredClone(snapshot);
-  const { provider } = kricStationLinesOfficialTimetable(snapshot, evidence, { bindings: BINDINGS });
-  const stops = Object.fromEntries(provider.trips.map(({ trainNumber, stops: tripStops }) => [trainNumber,
-    tripStops.map(({ arrivalSeconds, departureSeconds }) => [arrivalSeconds, departureSeconds])]));
-  assert.deepEqual(stops, {
-    1001: [[null, 21_600], [21_780, null]],
-    1899: [[null, 86_040], [86_460, null]],
-    1901: [[null, 86_760], [87_240, null]],
-  });
-  assert.deepEqual(snapshot, before);
-});
diff --git a/tools/datapack/lib/service-day-seconds.mjs b/tools/datapack/lib/service-day-seconds.mjs
index ddf3e4f4f..a40152770 100644
--- a/tools/datapack/lib/service-day-seconds.mjs
+++ b/tools/datapack/lib/service-day-seconds.mjs
@@ -1,8 +1,9 @@
 // #918: 운행일 경계. 시간표 원천은 자정 이후 시각을 24시 미만(00:00~02:59)으로 적는다.
-// 그 시각은 전날 운행일의 심야 시각이므로 86400초 이상으로 표현한다.
-// 근거(2026-10-04 실측): 인천 1·2호선 공식 FILE 8개는 00시대 시발 행을 모두 파일 끝(23시대 시발 뒤)에 두고
-// 02~04시 시각이 하나도 없다. KRIC 역별 API(GTX-A·의정부·에버라인·김포골드·부산김해)도 01~04시 시발 열차가 없다.
-// normalize-kric-timetable.mjs(03:00)와 같은 경계를 쓴다.
+// 그 시각은 전날 운행일의 심야 시각이므로 데이터팩 SQLite(transit_stop_times)에는 86400초 이상으로 싣는다.
+// 근거(2026-10-04 실측)
+// - 인천 1·2호선 공식 FILE 8개는 00시대 시발 행을 모두 파일 끝(23시대 시발 뒤)에 두고, 02~04시 시각이 하나도 없다.
+// - KRIC 역별 API(GTX-A·의정부·에버라인·김포골드·부산김해)도 01~04시에 출발하는 열차가 없다.
+// normalize-kric-timetable.mjs와 같은 03:00 경계를 쓴다.
 export const SERVICE_DAY_BOUNDARY_SECONDS = 3 * 3_600;
 const SECONDS_PER_DAY = 86_400;
 
@@ -13,8 +14,14 @@ export function serviceDaySeconds(seconds) {
   return seconds < SERVICE_DAY_BOUNDARY_SECONDS ? seconds + SECONDS_PER_DAY : seconds;
 }
 
-/** 운행일 경계 앞 시각이 남은 stop_time 행을 돌려준다. 비어 있어야 팩을 만들 수 있다. */
-export function serviceDayBoundaryViolations(stopTimes) {
-  const early = (seconds) => typeof seconds === "number" && seconds < SERVICE_DAY_BOUNDARY_SECONDS;
-  return stopTimes.filter(({ arrivalSeconds, departureSeconds }) => early(arrivalSeconds) || early(departureSeconds));
+/**
+ * stop_time 행의 도착·출발을 운행일 초로 바꾼 새 행을 돌려준다.
+ * 바꾼 뒤 trip 안 시각 순서(운행일 경계를 가로지르는 열차 등)는 validate-datapack의 순서 검사가 막는다.
+ */
+export function serviceDayStopTimes(stopTimes) {
+  return stopTimes.map((row) => ({
+    ...row,
+    arrivalSeconds: serviceDaySeconds(row.arrivalSeconds),
+    departureSeconds: serviceDaySeconds(row.departureSeconds),
+  }));
 }
diff --git a/tools/datapack/lib/service-day-seconds.test.mjs b/tools/datapack/lib/service-day-seconds.test.mjs
index 6c92edc6a..b0a0c18b2 100644
--- a/tools/datapack/lib/service-day-seconds.test.mjs
+++ b/tools/datapack/lib/service-day-seconds.test.mjs
@@ -3,8 +3,8 @@ import { test } from "node:test";
 
 import {
   SERVICE_DAY_BOUNDARY_SECONDS,
-  serviceDayBoundaryViolations,
   serviceDaySeconds,
+  serviceDayStopTimes,
 } from "./service-day-seconds.mjs";
 
 // #918: 원천이 24시 미만으로 적은 00:00~02:59 시각은 전날 운행일의 심야 시각이다.
@@ -27,16 +27,26 @@ test("시각이 정수 초가 아니면 운행일 시각으로 바꾸지 않고
   }
 });
 
-test("운행일 경계 앞 정차 시각이 남은 stop_time을 모두 찾는다", () => {
-  const violations = serviceDayBoundaryViolations([
-    { tripId: "trip-a", stopSequence: 1, arrivalSeconds: 86_430, departureSeconds: 86_430 },
-    { tripId: "trip-b", stopSequence: 1, arrivalSeconds: 570, departureSeconds: 570 },
-    { tripId: "trip-b", stopSequence: 2, arrivalSeconds: 10_790, departureSeconds: 10_800 },
-    { tripId: "trip-c", stopSequence: 1, arrivalSeconds: 19_800, departureSeconds: 19_800 },
+test("자정 이후 시발 열차(인천 1호선 1305형)는 정차 시각 전체가 86400초 이상이 되고, 자정을 넘는 열차는 그대로다", () => {
+  const rows = [
+    // 1301: 수집기가 이미 자정 이후 정차를 86400초 이상으로 이어 둔 열차
+    { tripId: "trip-1301", stopSequence: 1, arrivalSeconds: 85_590, departureSeconds: 85_590 },
+    { tripId: "trip-1301", stopSequence: 2, arrivalSeconds: 86_430, departureSeconds: 86_430 },
+    // 1305: 원천 FILE이 00:09:30 시발로 적은 막차
+    { tripId: "trip-1305", stopSequence: 2, arrivalSeconds: 1_410, departureSeconds: 1_410 },
+    { tripId: "trip-1305", stopSequence: 1, arrivalSeconds: 570, departureSeconds: 570 },
+    { tripId: "trip-first", stopSequence: 1, arrivalSeconds: 19_800, departureSeconds: 19_800 },
+    { tripId: "trip-first", stopSequence: 2, arrivalSeconds: 19_920, departureSeconds: 19_950 },
+  ];
+  const before = structuredClone(rows);
+  assert.deepEqual(serviceDayStopTimes(rows).map(({ tripId, stopSequence, arrivalSeconds, departureSeconds }) =>
+    [tripId, stopSequence, arrivalSeconds, departureSeconds]), [
+    ["trip-1301", 1, 85_590, 85_590],
+    ["trip-1301", 2, 86_430, 86_430],
+    ["trip-1305", 2, 87_810, 87_810],
+    ["trip-1305", 1, 86_970, 86_970],
+    ["trip-first", 1, 19_800, 19_800],
+    ["trip-first", 2, 19_920, 19_950],
   ]);
-  assert.deepEqual(violations, [
-    { tripId: "trip-b", stopSequence: 1, arrivalSeconds: 570, departureSeconds: 570 },
-    { tripId: "trip-b", stopSequence: 2, arrivalSeconds: 10_790, departureSeconds: 10_800 },
-  ]);
-  assert.deepEqual(serviceDayBoundaryViolations([]), []);
+  assert.deepEqual(rows, before);
 });
diff --git a/tools/datapack/materialize-incheon-timetable.mjs b/tools/datapack/materialize-incheon-timetable.mjs
index 93e1826ca..e97b900c3 100644
--- a/tools/datapack/materialize-incheon-timetable.mjs
+++ b/tools/datapack/materialize-incheon-timetable.mjs
@@ -13,7 +13,6 @@ import { isDeepStrictEqual } from "node:util";
 
 import { INCHEON_TIMETABLE_LINES } from "./collect-incheon-timetable.mjs";
 import { validateIncheonStationInfoSnapshot } from "./collect-incheon-station-info.mjs";
-import { serviceDaySeconds } from "./lib/service-day-seconds.mjs";
 
 const ISSUE = 2488;
 const MATERIALIZER = "tools/datapack/materialize-incheon-timetable.mjs";
@@ -413,9 +412,8 @@ function addRoutesAndTrips(pack, line, stationIdByLineCode) {
         stopSequence: index + 1,
         stationId,
         lineId: config.lineId,
-        // #918: 공식 FILE이 00시대로 적은 자정 이후 시각은 전날 운행일의 심야 시각이다(운행일 경계 03:00).
-        arrivalSeconds: serviceDaySeconds(stop.a),
-        departureSeconds: serviceDaySeconds(stop.d),
+        arrivalSeconds: stop.a,
+        departureSeconds: stop.d,
         pickupType: index === trip.stops.length - 1 ? 1 : 0,
         dropOffType: index === 0 ? 1 : 0,
       }, tripProvenance));
diff --git a/tools/datapack/materialize-incheon-timetable.test.mjs b/tools/datapack/materialize-incheon-timetable.test.mjs
index d655b88c1..844f286a1 100644
--- a/tools/datapack/materialize-incheon-timetable.test.mjs
+++ b/tools/datapack/materialize-incheon-timetable.test.mjs
@@ -248,16 +248,6 @@ test("인천 1·2호선 공식 timetable을 1414 trip·40898 stop_time·WEEK/HOL
 
   const maxArrival = Math.max(...stopTimes.map(({ arrivalSeconds }) => arrivalSeconds));
   assert.ok(maxArrival > 86_400, `expected a post-midnight trip, got max ${maxArrival}`);
-
-  // #918: 공식 FILE은 자정 이후 막차를 00시대로 적고 파일 끝에 둔다(02~04시 시각 없음).
-  // 운행일 경계(03:00) 앞 시각은 전날 운행일의 심야 시각이므로 86400초 이상으로 싣는다.
-  assert.deepEqual(stopTimes.filter(({ arrivalSeconds, departureSeconds }) =>
-    arrivalSeconds < 10_800 || departureSeconds < 10_800), []);
-  const bakchon = (tripId) => stopTimes.find((row) => row.tripId === tripId && row.stationId === "station-f497b2d7043f");
-  assert.deepEqual(
-    ["1301", "1303", "1305", "1307", "1309"].map((trainNo) => bakchon(`trip-incheon-1-dn-week-${trainNo}`).departureSeconds),
-    [86_430, 87_120, 87_810, 88_530, 89_070],
-  );
 });
 
 test("인천 timetable materializer는 snapshot·inventory·freshness·topology lineage 변조를 fail-closed한다", async () => {
@@ -445,6 +435,20 @@ test("materialized SQLite와 provenance가 인천 schedule_timetable 2건을 SUP
     "incheon-line2-holiday-2026": 372,
     "incheon-line2-weekday-2026": 468,
   });
+  // #918: 공식 FILE은 자정 이후 막차를 00시대로 적고 파일 끝에 둔다(02~04시 시각 없음).
+  // 데이터팩 SQLite에는 운행일 경계(03:00) 앞 시각을 전날 운행일의 24시 이후 초로 싣는다.
+  assert.equal(database.prepare(`
+    SELECT COUNT(*) AS count FROM transit_stop_times
+    WHERE trip_id LIKE 'trip-incheon-%' AND (arrival_seconds < 10800 OR departure_seconds < 10800)
+  `).get().count, 0);
+  assert.deepEqual(database.prepare(`
+    SELECT trip_id AS tripId, departure_seconds AS departureSeconds FROM transit_stop_times
+    WHERE station_id = 'station-f497b2d7043f' AND trip_id IN (
+      'trip-incheon-1-dn-week-1301', 'trip-incheon-1-dn-week-1303', 'trip-incheon-1-dn-week-1305',
+      'trip-incheon-1-dn-week-1307', 'trip-incheon-1-dn-week-1309')
+    ORDER BY trip_id
+  `).all().map(({ tripId, departureSeconds }) => [tripId.slice(-4), departureSeconds]),
+  [["1301", 86_430], ["1303", 87_120], ["1305", 87_810], ["1307", 88_530], ["1309", 89_070]]);
   database.close();
 
   await execFileAsync(process.execPath, [
diff --git a/tools/datapack/prepare-nationwide-candidate-run.mjs b/tools/datapack/prepare-nationwide-candidate-run.mjs
index da642afbc..e126054f2 100644
--- a/tools/datapack/prepare-nationwide-candidate-run.mjs
+++ b/tools/datapack/prepare-nationwide-candidate-run.mjs
@@ -19,7 +19,6 @@ import { outOfStationTransferNetworkEdges } from "./build-datapack.mjs";
 import { HOLIDAYS_2026, materializeIncheonTimetable } from "./materialize-incheon-timetable.mjs";
 import { buildNationwidePlatformInfoMap } from "./lib/nationwide-platform-resolver.mjs";
 import { integrateRegionalTimetables } from "./lib/regional-timetable-integrator.mjs";
-import { serviceDayBoundaryViolations } from "./lib/service-day-seconds.mjs";
 import { deriveFreshnessExpiresAt } from "./freshness-policy.mjs";
 import { deriveApprovedItxTopologyEvidencePath } from "./activate-current-source-set.mjs";
 import { officialOdFareAdmissionsBySource, officialOdFareQuoteSetHash } from "./lib/official-od-fare-evidence.mjs";
@@ -1578,13 +1577,6 @@ export async function prepareNationwideCandidate({
       ...gwangjuTopologySource.coverageScope[field]])].sort((left, right) => (left < right ? -1 : left > right ? 1 : 0));
   }
 
-  // #918: 모든 시간표 원천을 합친 뒤 운행일 경계(03:00) 앞 정차 시각이 남으면 후보를 만들지 않는다.
-  const serviceDayBoundaryRows = serviceDayBoundaryViolations(finalPack.transitStopTimes);
-  if (serviceDayBoundaryRows.length > 0) {
-    const tripIds = [...new Set(serviceDayBoundaryRows.map(({ tripId }) => tripId))];
-    throw new Error(`nationwide candidate stop times precede the 03:00 service-day boundary: ${tripIds.length} trips (${tripIds.slice(0, 5).join(", ")})`);
-  }
-
   // #855: 대전·광주 원천은 역별 시각 하나만 준다. 원천 정차 2개 이상으로 열차를 만들 수 없는
   // 원천 시각은 팩에 싣지 않고 사유·식별자·개수를 격리 증거로 남긴다.
   const timetableQuarantine = [
diff --git a/tools/datapack/prepare-nationwide-candidate-run.test.mjs b/tools/datapack/prepare-nationwide-candidate-run.test.mjs
index 716c59699..9e6218025 100644
--- a/tools/datapack/prepare-nationwide-candidate-run.test.mjs
+++ b/tools/datapack/prepare-nationwide-candidate-run.test.mjs
@@ -7,7 +7,6 @@ import { fileURLToPath } from "node:url";
 
 import { expandExternalStopTimes } from "./lib/external-stop-times.mjs";
 import { canonicalJson } from "./lib/manifest-validation.mjs";
-import { serviceDayBoundaryViolations } from "./lib/service-day-seconds.mjs";
 import { topologySnapshotFreshUntil } from "./lib/topology-freshness-cutover.mjs";
 
 import { admitOutOfStationTransferLinks, officialTransferEndpointRecords, packOutOfStationTransferLinks, applyMeasuredTransferTimePrecedence, assertCandidateClockAfterRawStorage, prepareNationwideCandidate, resolveSeoulMeasuredTransferMetrics, formatPlatformInfo, gwangjuFacilityState, regionalFacilityTypeCounts, busanFacilityState, officialTransferMetricsByDirection, resolveBusanTransferMetrics, resolveMolitTransferSnapshot, resolveNationwideCandidateInputSnapshots } from "./prepare-nationwide-candidate-run.mjs";
@@ -483,8 +482,6 @@ test("prepareNationwideCandidate binds platform metadata onto stationLines", asy
   });
 
   const pack = result.finalPack;
-  // #918: 조립한 전국 팩에는 운행일 경계(03:00) 앞 정차 시각이 남지 않는다(인천 1·2호선, KRIC GTX-A·의정부 포함).
-  assert.deepEqual(serviceDayBoundaryViolations(pack.transitStopTimes), []);
   const targetLine = pack.stationLines.find(
     (sl) => sl.stationId === "station-00089f8f97de" && sl.lineId === "line-558d0bd8312d"
   );

From 15798a8b3bb3d984aac54b4d332ef77e83029f92 Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 13:12:54 +0900
Subject: [PATCH 3/7] =?UTF-8?q?[Fix]=20=EC=BB=B4=ED=8C=8C=EC=9D=BC?=
 =?UTF-8?q?=EB=90=9C=20SQLite=EC=97=90=2003:00=20=EC=A0=84=20=EC=A0=95?=
 =?UTF-8?q?=EC=B0=A8=20=EC=8B=9C=EA=B0=81=EC=9D=B4=20=EB=82=A8=EC=9C=BC?=
 =?UTF-8?q?=EB=A9=B4=20=EB=8D=B0=EC=9D=B4=ED=84=B0=ED=8C=A9=20=EA=B2=80?=
 =?UTF-8?q?=EC=A6=9D=EC=9D=84=20=EA=B1=B0=EB=B6=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

리뷰 F1(#921). 운행일 경계 변환을 SQLite 기록 한 곳에만 두면 다른 기록 경로나 이후 리팩터로
0시대 값이 돌아와도 검증을 통과했다. validate-datapack이 모든 기관의 transit_stop_times에서
03:00 전 도착·출발을 거부한다.

Refs #918
---
 tools/datapack/datapack-tools.test.mjs | 28 ++++++++++++++++++++++++++
 tools/datapack/validate-datapack.mjs   |  5 +++++
 2 files changed, 33 insertions(+)

diff --git a/tools/datapack/datapack-tools.test.mjs b/tools/datapack/datapack-tools.test.mjs
index 8835f62bf..03d50933b 100644
--- a/tools/datapack/datapack-tools.test.mjs
+++ b/tools/datapack/datapack-tools.test.mjs
@@ -4499,6 +4499,34 @@ test("데이터팩 검증기는 현장·운영기관 확인 시설 AVAILABLE 근
   );
 });
 
+// #918 불변식: 컴파일된 SQLite에 03:00(운행일 경계) 전 정차 시각이 남으면 어느 기관이든 팩을 거부한다.
+test("#918 데이터팩 검증기는 운행일 경계(03:00) 전 정차 시각이 남은 비인천 trip을 거부한다", async (context) => {
+  const artifact = await buildCurrentProductionArtifact(context);
+  await mutateCurrentProductionSqlite(artifact, ({ database }) => {
+    const trip = database.prepare(`
+      SELECT trip_id FROM transit_stop_times
+      WHERE trip_id NOT LIKE 'trip-incheon-%'
+      GROUP BY trip_id HAVING MIN(arrival_seconds) >= 86400
+      ORDER BY trip_id LIMIT 1
+    `).get();
+    assert.ok(trip, "current production artifact requires one non-Incheon after-midnight trip");
+    const update = database.prepare(`
+      UPDATE transit_stop_times
+      SET arrival_seconds = arrival_seconds - 86400, departure_seconds = departure_seconds - 86400
+      WHERE trip_id = ?
+    `).run(trip.trip_id);
+    assert.ok(update.changes >= 2);
+  });
+  await assert.rejects(
+    execFileAsync(
+      process.execPath,
+      ["tools/datapack/validate-datapack.mjs", ...currentProductionValidationArgs(artifact)],
+      { cwd: root, env: productionEnv },
+    ),
+    /transit_stop_times must not precede the 03:00 service-day boundary/,
+  );
+});
+
 test("데이터팩 검증기는 근거 없는 시설 operationalStatus AVAILABLE을 거부한다", async (context) => {
   const artifact = await buildCurrentProductionArtifact(context);
   await mutateCurrentProductionSqlite(artifact, ({ database }) => {
diff --git a/tools/datapack/validate-datapack.mjs b/tools/datapack/validate-datapack.mjs
index c0a64acc8..ab19b0520 100644
--- a/tools/datapack/validate-datapack.mjs
+++ b/tools/datapack/validate-datapack.mjs
@@ -24,6 +24,7 @@ import {
   canonicalCurrentReleaseCandidateAccessibilityAuthorityJson,
   isNationwideCandidateId,
 } from "./build-current-release-candidate-accessibility-input.mjs";
+import { SERVICE_DAY_BOUNDARY_SECONDS } from "./lib/service-day-seconds.mjs";
 const facilityEvidenceProvenanceColumns = [
   "source_id",
   "source_snapshot_id",
@@ -494,6 +495,10 @@ function validateTransitSchedule(database, pack) {
       if (stopTime.arrival_seconds < previousDeparture) {
         throw new Error(`${pack.id}@${pack.version} transit_stop_times must be monotonic: ${trip.id}`);
       }
+      // #918: 03:00(운행일 경계) 전 시각은 전날 운행일의 24시 이후 초로 실어야 한다. 0시대 값이 남으면 기관과 상관없이 거부한다.
+      if (stopTime.arrival_seconds < SERVICE_DAY_BOUNDARY_SECONDS || stopTime.departure_seconds < SERVICE_DAY_BOUNDARY_SECONDS) {
+        throw new Error(`${pack.id}@${pack.version} transit_stop_times must not precede the 03:00 service-day boundary: ${trip.id}`);
+      }
       if (stopTime.line_id !== route.line_id) {
         throw new Error(`${pack.id}@${pack.version} transit_stop_times line_id must match route line_id: ${trip.id}`);
       }

From f75d7b8f0e6e15eb69e35db905f8e1b32e6e427e Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 13:12:54 +0900
Subject: [PATCH 4/7] =?UTF-8?q?[Test]=20=EB=B9=84=EC=9D=B8=EC=B2=9C=2000?=
 =?UTF-8?q?=EC=8B=9C=EB=8C=80=20trip=20=EB=B3=80=ED=99=98=EA=B3=BC=20?=
 =?UTF-8?q?=EA=B2=BD=EA=B3=84=20=ED=9A=A1=EB=8B=A8=20trip=20=EA=B1=B0?=
 =?UTF-8?q?=EB=B6=80=EB=A5=BC=20=EB=B9=8C=EB=93=9C=20=EC=88=98=EC=A4=80?=
 =?UTF-8?q?=EC=97=90=EC=84=9C=20=EA=B3=A0=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

리뷰 F4(#921). catalog fixture의 4호선 trip을 00시대로 옮겨 빌드하면 SQLite에 86400초 이상으로 실리고
검증을 통과한다. 02:55→03:05로 경계를 가로지르는 trip은 변환 뒤 역행해 검증기가 거부한다.

Refs #918
---
 tools/datapack/datapack-tools.test.mjs | 58 ++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/tools/datapack/datapack-tools.test.mjs b/tools/datapack/datapack-tools.test.mjs
index 03d50933b..327678831 100644
--- a/tools/datapack/datapack-tools.test.mjs
+++ b/tools/datapack/datapack-tools.test.mjs
@@ -1501,6 +1501,64 @@ test("데이터팩 검증기는 trip별 stop_time 시간이 역행하면 거부
   );
 });
 
+// #918: 원천이 00:00~02:59로 적은 시각은 전날 운행일의 24시 이후 초로 SQLite에 싣는다(인천만이 아니라 모든 기관).
+async function buildFixtureWithStopTimes(name, times) {
+  const fixture = JSON.parse(await readFile("tools/datapack/fixtures/catalog-fixture.json", "utf8"));
+  const outputDir = path.join(tmpdir(), `easysubway-datapack-service-day-${name}-${Date.now()}`);
+  const fixturePath = path.join(outputDir, "fixture.json");
+  await rm(outputDir, { recursive: true, force: true });
+  await mkdir(outputDir, { recursive: true });
+  const rows = fixture.packs[0].transitStopTimes
+    .filter(({ tripId }) => tripId === "trip-seoul-4-local-0805")
+    .sort((left, right) => left.stopSequence - right.stopSequence);
+  assert.equal(rows.length, times.length);
+  rows.forEach((row, index) => Object.assign(row, times[index]));
+  await writeFile(fixturePath, `${JSON.stringify(fixture, null, 2)}\n`);
+  await execFileAsync(
+    process.execPath,
+    ["tools/datapack/build-datapack.mjs", "--fixture", fixturePath, "--output", outputDir],
+    { cwd: root, env: productionEnv },
+  );
+  return outputDir;
+}
+
+test("#918 수도권 4호선 trip의 00시대 정차도 데이터팩 SQLite에는 86400초 이상으로 싣고 검증을 통과한다", async (context) => {
+  const outputDir = await buildFixtureWithStopTimes("after-midnight", [
+    { arrivalSeconds: 600, departureSeconds: 600 },
+    { arrivalSeconds: 1_320, departureSeconds: 1_440 },
+  ]);
+  context.after(() => rm(outputDir, { recursive: true, force: true }));
+  const database = new DatabaseSync(path.join(outputDir, "catalog", "capital-v1.sqlite"), { readOnly: true });
+  try {
+    assert.deepEqual(database.prepare(`
+      SELECT stop_sequence, arrival_seconds, departure_seconds FROM transit_stop_times
+      WHERE trip_id = 'trip-seoul-4-local-0805' ORDER BY stop_sequence
+    `).all().map((row) => ({ ...row })), [
+      { stop_sequence: 1, arrival_seconds: 87_000, departure_seconds: 87_000 },
+      { stop_sequence: 2, arrival_seconds: 87_720, departure_seconds: 87_840 },
+    ]);
+  } finally {
+    database.close();
+  }
+  await execFileAsync(process.execPath, [
+    "tools/datapack/validate-datapack.mjs", "--manifest", path.join(outputDir, "current.json"), "--root", outputDir,
+  ], { cwd: root, env: productionEnv });
+});
+
+test("#918 운행일 경계(03:00)를 가로지르는 trip은 변환 뒤 시각이 역행해 검증기가 거부한다", async (context) => {
+  const outputDir = await buildFixtureWithStopTimes("straddle", [
+    { arrivalSeconds: 10_500, departureSeconds: 10_500 },
+    { arrivalSeconds: 11_100, departureSeconds: 11_220 },
+  ]);
+  context.after(() => rm(outputDir, { recursive: true, force: true }));
+  await assert.rejects(
+    execFileAsync(process.execPath, [
+      "tools/datapack/validate-datapack.mjs", "--manifest", path.join(outputDir, "current.json"), "--root", outputDir,
+    ], { cwd: root, env: productionEnv }),
+    /transit_stop_times must be monotonic: trip-seoul-4-local-0805/,
+  );
+});
+
 test("원격 데이터팩 검증 wrapper는 manifest와 pack을 내려받아 기존 validator를 실행한다", async () => {
   const packOutputDir = path.join(tmpdir(), `easysubway-remote-datapack-source-${Date.now()}`);
   const downloadDir = path.join(tmpdir(), `easysubway-remote-datapack-download-${Date.now()}`);

From 8ff62d962c29cea30bab637c906a8d737f53db23 Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 13:13:38 +0900
Subject: [PATCH 5/7] =?UTF-8?q?[Refactor]=20=EC=9A=B4=ED=96=89=EC=9D=BC=20?=
 =?UTF-8?q?=EA=B2=BD=EA=B3=84=2003:00=EC=9D=84=20=EB=8D=B0=EC=9D=B4?=
 =?UTF-8?q?=ED=84=B0=20=EC=AA=BD=20=ED=95=9C=20=EC=83=81=EC=88=98=EB=A1=9C?=
 =?UTF-8?q?=20=EB=AA=A8=EC=9C=BC=EA=B3=A0=20Journey=20=EA=B3=84=EC=95=BD?=
 =?UTF-8?q?=20=EA=B0=92=EA=B3=BC=20=EA=B3=A0=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

리뷰 F3(#921). normalize-kric-timetable의 별도 3시 상수를 lib/service-day-seconds의 상수로 바꾼다.
SERVICE_DAY_CUTOFF_LOCAL_TIME("03:00")이 hub journey-v3 serviceDayCutoff·backend ServiceDayResolver와
같은 값임을 테스트로 고정한다.

Refs #918
---
 tools/datapack/lib/service-day-seconds.mjs      |  4 +++-
 tools/datapack/lib/service-day-seconds.test.mjs | 15 +++++++++++++++
 tools/datapack/normalize-kric-timetable.mjs     |  5 +++--
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/tools/datapack/lib/service-day-seconds.mjs b/tools/datapack/lib/service-day-seconds.mjs
index a40152770..e987b1eb4 100644
--- a/tools/datapack/lib/service-day-seconds.mjs
+++ b/tools/datapack/lib/service-day-seconds.mjs
@@ -3,7 +3,9 @@
 // 근거(2026-10-04 실측)
 // - 인천 1·2호선 공식 FILE 8개는 00시대 시발 행을 모두 파일 끝(23시대 시발 뒤)에 두고, 02~04시 시각이 하나도 없다.
 // - KRIC 역별 API(GTX-A·의정부·에버라인·김포골드·부산김해)도 01~04시에 출발하는 열차가 없다.
-// normalize-kric-timetable.mjs와 같은 03:00 경계를 쓴다.
+// 데이터 쪽 운행일 경계는 이 상수 하나다(normalize-kric-timetable.mjs도 가져다 쓴다).
+// hub Journey 계약(journey-v3 serviceDayCutoff "03:00")과 backend ServiceDayResolver.CUTOFF_LOCAL_TIME과 같아야 한다.
+export const SERVICE_DAY_CUTOFF_LOCAL_TIME = "03:00";
 export const SERVICE_DAY_BOUNDARY_SECONDS = 3 * 3_600;
 const SECONDS_PER_DAY = 86_400;
 
diff --git a/tools/datapack/lib/service-day-seconds.test.mjs b/tools/datapack/lib/service-day-seconds.test.mjs
index b0a0c18b2..533a35372 100644
--- a/tools/datapack/lib/service-day-seconds.test.mjs
+++ b/tools/datapack/lib/service-day-seconds.test.mjs
@@ -50,3 +50,18 @@ test("자정 이후 시발 열차(인천 1호선 1305형)는 정차 시각 전
   ]);
   assert.deepEqual(rows, before);
 });
+
+// 리뷰 F3(#921): 운행일 경계는 데이터 쪽에서 이 모듈 하나로만 정한다.
+// 다른 레포의 같은 값(읽기 전용 대조, 2026-10-04):
+// - hub contracts/api/journey-v3.openapi.yaml `serviceDayCutoff: enum ["03:00"]`
+// - backend ServiceDayResolver.CUTOFF_LOCAL_TIME(응답 serviceDayCutoff), mobile은 응답의 serviceDayCutoff를 읽는다.
+test("운행일 경계는 Journey 계약의 serviceDayCutoff \"03:00\"과 같고 KRIC 정규화도 같은 상수를 쓴다", async () => {
+  const { readFile } = await import("node:fs/promises");
+  const { SERVICE_DAY_CUTOFF_LOCAL_TIME } = await import("./service-day-seconds.mjs");
+  assert.equal(SERVICE_DAY_CUTOFF_LOCAL_TIME, "03:00");
+  const [hours, minutes] = SERVICE_DAY_CUTOFF_LOCAL_TIME.split(":").map(Number);
+  assert.equal(SERVICE_DAY_BOUNDARY_SECONDS, hours * 3_600 + minutes * 60);
+  const normalizer = await readFile(new URL("../normalize-kric-timetable.mjs", import.meta.url), "utf8");
+  assert.match(normalizer, /import \{ SERVICE_DAY_BOUNDARY_SECONDS \} from "\.\/lib\/service-day-seconds\.mjs";/u);
+  assert.doesNotMatch(normalizer, /3 \* 3600|10_?800/u);
+});
diff --git a/tools/datapack/normalize-kric-timetable.mjs b/tools/datapack/normalize-kric-timetable.mjs
index bdde271fb..710d86bbb 100644
--- a/tools/datapack/normalize-kric-timetable.mjs
+++ b/tools/datapack/normalize-kric-timetable.mjs
@@ -6,7 +6,8 @@
 //   - stinCd/lnCd/railOprIsttCd는 canonical stationId/lineId로 매핑(context 제공).
 //   - dayCd(8/7/9)는 그대로 전달 — serviceId 매핑은 적재 시 context.serviceIdByDayCd가 담당.
 
-const SERVICE_DAY_CUTOFF_SECONDS = 3 * 3600;
+import { SERVICE_DAY_BOUNDARY_SECONDS } from "./lib/service-day-seconds.mjs";
+
 const DAY_SECONDS = 24 * 3600;
 
 export function normalizeKricSubwayTimetable(kricRows, context) {
@@ -81,7 +82,7 @@ function parseKricTime(value) {
   // KRIC은 심야(자정 넘김) 열차 시각을 24:00~이 아니라 실제 시계(00:xx)로 반환한다. 지하철 서비스데이는
   // ~03시에 끊기고(planner cutoff 동일) 03~05시 운행이 없으므로, 3시 미만 시각은 전 서비스데이 심야분(+24h)이다.
   // 이 정규화가 없으면 23:59 도착→00:00 출발 같은 자정 넘김에서 도착>출발이 된다.
-  return raw < SERVICE_DAY_CUTOFF_SECONDS ? raw + DAY_SECONDS : raw;
+  return raw < SERVICE_DAY_BOUNDARY_SECONDS ? raw + DAY_SECONDS : raw;
 }
 
 function requireMapping(lookup, key, label) {

From 7f78d63a412a97ed85223817e3ca28707534d40b Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 13:13:38 +0900
Subject: [PATCH 6/7] =?UTF-8?q?[Docs]=20=EC=9A=B4=ED=96=89=EC=9D=BC=20?=
 =?UTF-8?q?=EA=B2=BD=EA=B3=84=20=EB=B3=80=ED=99=98=EC=9D=B4=20SQLite=20?=
 =?UTF-8?q?=EC=A0=84=EC=9A=A9=EC=9D=B8=20=EC=9D=B4=EC=9C=A0=EC=99=80=20JSO?=
 =?UTF-8?q?N=20=EA=B2=BD=EB=A1=9C=20=EC=86=8C=EB=B9=84=EC=B2=98=20?=
 =?UTF-8?q?=EB=B6=80=EC=9E=AC=EB=A5=BC=20=EC=BD=94=EB=93=9C=EC=97=90=20?=
 =?UTF-8?q?=EA=B8=B0=EB=A1=9D?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

리뷰 F2(#921). build-backend-timetable-seed·build-server-timetable-snapshot은 정본 팩 JSON을 읽지만
backend #479에서 seed 로더가 제거되어 운영 소비처가 없다. 다시 쓰려면 같은 변환이 필요함을 남긴다.

Refs #918
---
 tools/datapack/lib/service-day-seconds.mjs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/datapack/lib/service-day-seconds.mjs b/tools/datapack/lib/service-day-seconds.mjs
index e987b1eb4..b470f142b 100644
--- a/tools/datapack/lib/service-day-seconds.mjs
+++ b/tools/datapack/lib/service-day-seconds.mjs
@@ -3,6 +3,11 @@
 // 근거(2026-10-04 실측)
 // - 인천 1·2호선 공식 FILE 8개는 00시대 시발 행을 모두 파일 끝(23시대 시발 뒤)에 두고, 02~04시 시각이 하나도 없다.
 // - KRIC 역별 API(GTX-A·의정부·에버라인·김포골드·부산김해)도 01~04시에 출발하는 열차가 없다.
+// 적용 범위는 데이터팩 SQLite(transit_stop_times)다. 서버 경로 번들과 모바일 카탈로그 팩이 이 SQLite를 쓴다.
+// 정본 팩 JSON을 직접 읽는 build-backend-timetable-seed·build-server-timetable-snapshot은 운영 소비처가 없다.
+// 확인 근거(2026-10-04): backend #479가 TimetableSeedLoader와 seed 리소스를 지웠고,
+// backend main 리소스에는 server-timetable-snapshot 산출물이 없다.
+// 그 경로를 다시 쓰려면 같은 변환을 먼저 적용해야 한다.
 // 데이터 쪽 운행일 경계는 이 상수 하나다(normalize-kric-timetable.mjs도 가져다 쓴다).
 // hub Journey 계약(journey-v3 serviceDayCutoff "03:00")과 backend ServiceDayResolver.CUTOFF_LOCAL_TIME과 같아야 한다.
 export const SERVICE_DAY_CUTOFF_LOCAL_TIME = "03:00";

From e2eb772d12c88cf0c4179cadd8fa574fdeabfa5e Mon Sep 17 00:00:00 2001
From: AquilaXk <illusiveman7@gmail.com>
Date: Sun, 4 Oct 2026 13:43:38 +0900
Subject: [PATCH 7/7] =?UTF-8?q?[Test]=20=EC=9A=B4=ED=96=89=EC=9D=BC=20?=
 =?UTF-8?q?=EA=B2=BD=EA=B3=84=20=EB=B6=88=EB=B3=80=EC=8B=9D=20=ED=85=8C?=
 =?UTF-8?q?=EC=8A=A4=ED=8A=B8=EB=A5=BC=20=EC=A0=84=EA=B5=AD=20RC=20?=
 =?UTF-8?q?=EB=B9=8C=EB=93=9C=20=EB=8C=80=EC=8B=A0=20fixture=20SQLite=20?=
 =?UTF-8?q?=EB=B3=80=EC=A1=B0=EB=A1=9C=20=EA=B0=80=EB=B3=8D=EA=B2=8C=20?=
 =?UTF-8?q?=EB=B0=94=EA=BF=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

mobile-v19 CI 러너가 자원 한도로 중단(exit 143)되는 빈도를 줄이려고, 전국 RC 산출물을 새로 빌드하던 F1 테스트를
catalog fixture 빌드(4호선, 인천 아님)와 SQLite 직접 변조·fixture 서명 갱신으로 바꾼다. 검증기의 03:00 검사를 끄면
이 테스트가 실패한다.

Refs #918
---
 tools/datapack/datapack-tools.test.mjs | 75 ++++++++++++++++----------
 1 file changed, 47 insertions(+), 28 deletions(-)

diff --git a/tools/datapack/datapack-tools.test.mjs b/tools/datapack/datapack-tools.test.mjs
index 327678831..842fac48c 100644
--- a/tools/datapack/datapack-tools.test.mjs
+++ b/tools/datapack/datapack-tools.test.mjs
@@ -1545,6 +1545,53 @@ test("#918 수도권 4호선 trip의 00시대 정차도 데이터팩 SQLite에
   ], { cwd: root, env: productionEnv });
 });
 
+// #918 불변식: 컴파일된 SQLite에 03:00(운행일 경계) 전 정차 시각이 남으면 어느 기관이든 팩을 거부한다.
+// 빌드는 이미 변환하므로, 다른 기록 경로를 흉내 내 SQLite를 직접 0시대로 되돌린다(4호선, 인천 아님).
+test("#918 데이터팩 검증기는 운행일 경계(03:00) 전 정차 시각이 남은 비인천 trip을 거부한다", async (context) => {
+  const output = await buildFixtureWithStopTimes("pre-boundary", [
+    { arrivalSeconds: 600, departureSeconds: 600 },
+    { arrivalSeconds: 1_320, departureSeconds: 1_440 },
+  ]);
+  context.after(() => rm(output, { recursive: true, force: true }));
+  const manifestPath = path.join(output, "current.json");
+  const manifest = JSON.parse(await readFile(manifestPath, "utf8"));
+  const sqlitePath = path.join(output, "catalog", "capital-v1.sqlite");
+  const database = new DatabaseSync(sqlitePath);
+  try {
+    const update = database.prepare(`
+      UPDATE transit_stop_times
+      SET arrival_seconds = arrival_seconds - 86400, departure_seconds = departure_seconds - 86400
+      WHERE trip_id = 'trip-seoul-4-local-0805'
+    `).run();
+    assert.equal(update.changes, 2);
+  } finally {
+    database.close();
+  }
+  const sqliteBytes = await readFile(sqlitePath);
+  const gzipBytes = gzipSync(sqliteBytes);
+  await writeFile(`${sqlitePath}.gz`, gzipBytes);
+  const pack = manifest.packs[0];
+  Object.assign(pack, { sizeBytes: gzipBytes.length, sha256: sha256(gzipBytes), sqliteSha256: sha256(sqliteBytes) });
+  // fixture 팩 서명은 payload의 sha256이다(production 팩만 RSA 서명).
+  const fixturePayload = `${pack.id}:${pack.version}:${pack.sha256}:${pack.sqliteSha256}:${pack.sizeBytes}`;
+  pack.signature.value = sha256(Buffer.from(fixturePayload));
+  pack.representativeRouteRegressionSignature.value = sha256(Buffer.from(
+    `${fixturePayload}:${representativeRouteRegressionPayload(pack.representativeRouteRegressions)}`));
+  const manifestBytes = Buffer.from(`${JSON.stringify(manifest, null, 2)}\n`);
+  await writeFile(manifestPath, manifestBytes);
+  const provenancePath = path.join(output, "current.provenance.json");
+  const provenance = JSON.parse(await readFile(provenancePath, "utf8"));
+  provenance.manifestSha256 = sha256(manifestBytes);
+  provenance.packs.find(({ id }) => id === pack.id).sqliteSha256 = pack.sqliteSha256;
+  await writeFile(provenancePath, `${JSON.stringify(provenance, null, 2)}\n`);
+  await assert.rejects(
+    execFileAsync(process.execPath, [
+      "tools/datapack/validate-datapack.mjs", "--manifest", path.join(output, "current.json"), "--root", output,
+    ], { cwd: root, env: productionEnv }),
+    /transit_stop_times must not precede the 03:00 service-day boundary: trip-seoul-4-local-0805/,
+  );
+});
+
 test("#918 운행일 경계(03:00)를 가로지르는 trip은 변환 뒤 시각이 역행해 검증기가 거부한다", async (context) => {
   const outputDir = await buildFixtureWithStopTimes("straddle", [
     { arrivalSeconds: 10_500, departureSeconds: 10_500 },
@@ -4557,34 +4604,6 @@ test("데이터팩 검증기는 현장·운영기관 확인 시설 AVAILABLE 근
   );
 });
 
-// #918 불변식: 컴파일된 SQLite에 03:00(운행일 경계) 전 정차 시각이 남으면 어느 기관이든 팩을 거부한다.
-test("#918 데이터팩 검증기는 운행일 경계(03:00) 전 정차 시각이 남은 비인천 trip을 거부한다", async (context) => {
-  const artifact = await buildCurrentProductionArtifact(context);
-  await mutateCurrentProductionSqlite(artifact, ({ database }) => {
-    const trip = database.prepare(`
-      SELECT trip_id FROM transit_stop_times
-      WHERE trip_id NOT LIKE 'trip-incheon-%'
-      GROUP BY trip_id HAVING MIN(arrival_seconds) >= 86400
-      ORDER BY trip_id LIMIT 1
-    `).get();
-    assert.ok(trip, "current production artifact requires one non-Incheon after-midnight trip");
-    const update = database.prepare(`
-      UPDATE transit_stop_times
-      SET arrival_seconds = arrival_seconds - 86400, departure_seconds = departure_seconds - 86400
-      WHERE trip_id = ?
-    `).run(trip.trip_id);
-    assert.ok(update.changes >= 2);
-  });
-  await assert.rejects(
-    execFileAsync(
-      process.execPath,
-      ["tools/datapack/validate-datapack.mjs", ...currentProductionValidationArgs(artifact)],
-      { cwd: root, env: productionEnv },
-    ),
-    /transit_stop_times must not precede the 03:00 service-day boundary/,
-  );
-});
-
 test("데이터팩 검증기는 근거 없는 시설 operationalStatus AVAILABLE을 거부한다", async (context) => {
   const artifact = await buildCurrentProductionArtifact(context);
   await mutateCurrentProductionSqlite(artifact, ({ database }) => {