fix(migration): 검증 실패 아이콘을 명시적으로 제외한다

검토한 회원 번호의 이미지가 계속 유효성 조건을 어길 때만 업로드에서 제외한다. 기존 Ref 경로가 현재 선택인 경우 기본 아이콘으로 정리하고 최신 Core 선택은 보존한다.

docs/legacy-db-migration.md

@@ -86,6 +86,14 @@ is not silently resurrected. The original Ref path, `IMGSVR`, returned path and
 byte SHA-256 remain in `legacy_data`. Picture collisions across owners fail the
 transaction.
 
+Historical bytes that violate the Ref validation contract block preflight.
+Operators may list a reviewed member in `excludedMemberNumbers`; the importer
+then proves the file is still invalid and records the reason. It never uploads
+that byte or creates a `user_icon` row. If the target still selects the rejected
+Ref path it moves only that selection to `default.jpg`; a newer Core selection
+is preserved. A stale exclusion whose file has become valid also blocks the
+plan, so this cannot become a general skip-errors switch.
+
 Kakao members retain `oauth_id`, email and metadata. A non-empty provider ID is
 required before an imported row is marked Kakao-verified. A parseable legacy
 `token_valid_until` is copied to `kakao_talk_verified_until`, preserving the

tools/legacy-db-migration/README.md

@@ -44,6 +44,12 @@ is mandatory. Mount Ref's `d_pic` directory read-only as `sourceDirectory`, and
 mount the Core2026 sam-image upload secret as a mode-0600 `uploadSecretFile`.
 The two URL fields normally point to `https://sam-image.hided.net` and its
 `/icons` path. The importer never adds account images to the image Git tree.
+An invalid historical file blocks the plan by default. After byte-level review,
+its member number may be listed in `excludedMemberNumbers`; the exclusion is
+accepted only while that exact member still has invalid image geometry/format.
+A valid file or stale/missing member exclusion fails closed. An unchanged
+invalid Ref selection is reset to the default icon instead of publishing bad
+bytes; a newer Core selection is preserved.
 
 ```sh
 mkdir -p tools/legacy-db-migration/secrets

tools/legacy-db-migration/migration-plan.example.json

@@ -14,7 +14,8 @@
             "sourceDirectory": "/run/sammo-migration/user-icons",
             "uploadBaseUrl": "https://sam-image.hided.net",
             "publicBaseUrl": "https://sam-image.hided.net/icons",
-            "uploadSecretFile": "/run/secrets/image_upload_core2026_secret"
+            "uploadSecretFile": "/run/secrets/image_upload_core2026_secret",
+            "excludedMemberNumbers": []
         },
         "targetUrlEnv": "GATEWAY_DATABASE_URL"
     },

tools/legacy-db-migration/src/config.ts

@@ -169,7 +169,11 @@ const resolveUserIcons = async (
     label: string
 ): Promise<LegacyUserIconTransferConfig> => {
     const record = asRecord(value, label);
-    rejectUnknownKeys(record, ['sourceDirectory', 'uploadBaseUrl', 'publicBaseUrl', 'uploadSecretFile'], label);
+    rejectUnknownKeys(
+        record,
+        ['sourceDirectory', 'uploadBaseUrl', 'publicBaseUrl', 'uploadSecretFile', 'excludedMemberNumbers'],
+        label
+    );
     const sourceDirectory = path.resolve(configDirectory, requiredString(record, 'sourceDirectory', label));
     const sourceInfo = await lstat(sourceDirectory);
     if (!sourceInfo.isDirectory() || sourceInfo.isSymbolicLink()) {
@@ -180,7 +184,20 @@ const resolveUserIcons = async (
     const secretPath = path.resolve(configDirectory, requiredString(record, 'uploadSecretFile', label));
     const uploadSecret = (await readSecureText(secretPath, `${label}.uploadSecretFile`)).replace(/\r?\n$/u, '');
     if (uploadSecret.length < 32) throw new Error(`${label}.uploadSecretFile must contain at least 32 characters`);
-    return { sourceDirectory, uploadBaseUrl, publicBaseUrl, uploadSecret };
+    const excludedMemberNumbers = record.excludedMemberNumbers ?? [];
+    if (
+        !Array.isArray(excludedMemberNumbers) ||
+        excludedMemberNumbers.some((value) => !Number.isSafeInteger(value) || Number(value) <= 0)
+    ) {
+        throw new Error(`${label}.excludedMemberNumbers must contain only positive safe integers`);
+    }
+    return {
+        sourceDirectory,
+        uploadBaseUrl,
+        publicBaseUrl,
+        uploadSecret,
+        excludedMemberNumbers: excludedMemberNumbers as number[],
+    };
 };
 
 export const loadMigrationPlan = async (configPathInput: string): Promise<ResolvedMigrationPlan> => {

tools/legacy-db-migration/src/gateway.ts

@@ -31,9 +31,11 @@ import {
     normalizeLegacyIconPicture,
     prepareLegacyUserIcons,
     syncImportedUserIcons,
+    syncRejectedUserIcons,
     type LegacyUserIconPreparation,
     type LegacyUserIconTransferConfig,
     type PreparedLegacyUserIcon,
+    type RejectedLegacyUserIcon,
 } from './legacyUserIcons.js';
 import { mapLegacyRoles, mapLegacySanctions, parseJson, type JsonValue } from './transform.js';
 
@@ -119,7 +121,8 @@ export const mapMember = (
     row: SourceRow,
     migratedAt: Date,
     lastLoginAt: Date | null,
-    importedIcon?: PreparedLegacyUserIcon
+    importedIcon?: PreparedLegacyUserIcon,
+    rejectedIcon?: RejectedLegacyUserIcon
 ): TargetRow => {
     const memberNo = toNumber(row.NO, 'member.NO');
     const grade = toNumber(row.GRADE, `member.${memberNo}.GRADE`);
@@ -139,6 +142,7 @@ export const mapMember = (
         picture: rawPicture,
         imageServer,
         ...(importedIcon ? { importedPicture: importedIcon.picture, importedPictureSha256: importedIcon.sha256 } : {}),
+        ...(rejectedIcon ? { rejectedPictureReason: rejectedIcon.reason } : {}),
         tokenValidUntil: toNullableString(row.token_valid_until),
         regNum: toNumber(row.REG_NUM, `member.${memberNo}.REG_NUM`),
         blockNum: toNumber(row.BLOCK_NUM, `member.${memberNo}.BLOCK_NUM`),
@@ -157,8 +161,8 @@ export const mapMember = (
         oauth_id: oauthId,
         email: toNullableString(row.EMAIL)?.toLowerCase() ?? null,
         oauth_info: jsonParameter(oauthInfo),
-        picture: importedIcon?.picture ?? normalizeLegacyIconPicture(rawPicture),
+        picture: importedIcon?.picture ?? (rejectedIcon ? 'default.jpg' : normalizeLegacyIconPicture(rawPicture)),
-        image_server: importedIcon?.imageServer ?? imageServer,
+        image_server: importedIcon?.imageServer ?? (rejectedIcon ? 0 : imageServer),
         icon_updated_at: null,
         third_party_use: toNumber(row.third_use ?? 0, `member.${memberNo}.third_use`) !== 0,
         terms_accepted_at: null,
@@ -196,21 +200,24 @@ const processMembers = async (
     apply: boolean,
     migratedAt: Date,
     counts: Record<string, number>,
-    preparedIcons: ReadonlyMap<number, PreparedLegacyUserIcon>
+    preparedIcons: ReadonlyMap<number, PreparedLegacyUserIcon>,
+    rejectedIcons: ReadonlyMap<number, RejectedLegacyUserIcon>
 ): Promise<void> => {
     const lastLogins = await loadLastLogins(source);
     for await (const rows of paginateSource(source, 'member', 'NO', batchSize)) {
         const mapped = rows.map((row) => {
             const memberNo = toNumber(row.NO, 'member.NO');
             const importedIcon = preparedIcons.get(memberNo);
+            const rejectedIcon = rejectedIcons.get(memberNo);
             const sourcePicture = toNullableString(row.PICTURE) ?? 'default.jpg';
             if (
-                (sourcePicture !== 'default.jpg' && !importedIcon) ||
+                (sourcePicture !== 'default.jpg' && !importedIcon && !rejectedIcon) ||
-                (importedIcon && importedIcon.sourcePicture !== sourcePicture)
+                (importedIcon && importedIcon.sourcePicture !== sourcePicture) ||
+                (rejectedIcon && rejectedIcon.sourcePicture !== sourcePicture)
             ) {
                 throw new Error(`member.${memberNo}.PICTURE changed after user-icon preflight`);
             }
-            return mapMember(row, migratedAt, lastLogins.get(memberNo) ?? null, importedIcon);
+            return mapMember(row, migratedAt, lastLogins.get(memberNo) ?? null, importedIcon, rejectedIcon);
         });
         if (target) {
             await preflightMemberConflicts(target, mapped);
@@ -228,6 +235,17 @@ const processMembers = async (
             counts.user_icon_library_inserted = (counts.user_icon_library_inserted ?? 0) + synced.libraryInserted;
             counts.user_icon_library_retired = (counts.user_icon_library_retired ?? 0) + synced.libraryRetired;
             counts.user_icon_target_preserved = (counts.user_icon_target_preserved ?? 0) + synced.targetPreserved;
+            const rejected = await syncRejectedUserIcons(
+                target,
+                rows
+                    .map((row) => rejectedIcons.get(toNumber(row.NO, 'member.NO')))
+                    .filter((icon): icon is RejectedLegacyUserIcon => Boolean(icon)),
+                migratedAt
+            );
+            counts.user_icon_rejected_current_reset =
+                (counts.user_icon_rejected_current_reset ?? 0) + rejected.currentReset;
+            counts.user_icon_rejected_target_preserved =
+                (counts.user_icon_rejected_target_preserved ?? 0) + rejected.targetPreserved;
         }
         counts.member = (counts.member ?? 0) + mapped.length;
     }
@@ -351,10 +369,11 @@ export const migrateGateway = async (
             counts.user_icon_legacy_file = prepared.counts.legacyFiles;
             counts.user_icon_existing_upload = prepared.counts.existingUploads;
             counts.user_icon_uploaded = prepared.counts.uploaded;
+            counts.user_icon_rejected = prepared.counts.rejected;
         };
         const run = async (runId: string | null, prepared: LegacyUserIconPreparation): Promise<void> => {
             recordIconCounts(prepared);
-            await processMembers(source, client, apply, migratedAt, counts, prepared.icons);
+            await processMembers(source, client, apply, migratedAt, counts, prepared.icons, prepared.rejected);
             progress.member = {
                 strategy: 'rescan',
                 startAfterId: null,

tools/legacy-db-migration/src/legacyUserIcons.ts

@@ -27,6 +27,7 @@ export interface LegacyUserIconTransferConfig {
     uploadBaseUrl: string;
     publicBaseUrl: string;
     uploadSecret: string;
+    excludedMemberNumbers: readonly number[];
 }
 
 export interface PreparedLegacyUserIcon {
@@ -44,14 +45,25 @@ export interface PreparedLegacyUserIcon {
 
 export interface LegacyUserIconPreparation {
     icons: Map<number, PreparedLegacyUserIcon>;
+    rejected: Map<number, RejectedLegacyUserIcon>;
     counts: {
         custom: number;
         legacyFiles: number;
         existingUploads: number;
         uploaded: number;
+        rejected: number;
     };
 }
 
+export interface RejectedLegacyUserIcon {
+    memberNo: number;
+    userId: string;
+    sourcePicture: string;
+    normalizedSourcePicture: string;
+    sourceImageServer: number;
+    reason: string;
+}
+
 export interface LegacyUserIconSyncCounts {
     currentLinked: number;
     libraryInserted: number;
@@ -59,6 +71,11 @@ export interface LegacyUserIconSyncCounts {
     targetPreserved: number;
 }
 
+export interface RejectedLegacyUserIconSyncCounts {
+    currentReset: number;
+    targetPreserved: number;
+}
+
 interface ValidatedImage {
     body: Buffer;
     extension: string;
@@ -66,6 +83,8 @@ interface ValidatedImage {
     sha256: string;
 }
 
+class LegacyUserIconValidationError extends Error {}
+
 const encodedPicturePath = (picture: string): string => picture.split('/').map(encodeURIComponent).join('/');
 
 export const normalizeLegacyIconPicture = (picture: string): string => picture.replace(LEGACY_CACHE_SUFFIX, '');
@@ -82,21 +101,29 @@ const iconCreatedAt = (sourcePicture: string, fallback: Date): Date => {
 
 const validateImage = async (body: Buffer, label: string): Promise<ValidatedImage> => {
     if (body.length === 0 || body.length > MAX_ICON_BYTES) {
-        throw new Error(`${label} must be non-empty and at most 50 KiB`);
+        throw new LegacyUserIconValidationError(`${label} must be non-empty and at most 50 KiB`);
     }
-    let metadata: { mediaType?: string; format?: string; width?: number; height?: number };
+    let metadata: {
+        mediaType?: string;
+        format?: string;
+        width?: number;
+        height?: number;
+        pageHeight?: number;
+        pages?: number;
+    };
     try {
         metadata = await sharp(body, { animated: true }).metadata();
     } catch (error) {
-        throw new Error(`${label} is not a decodable image`, { cause: error });
+        throw new LegacyUserIconValidationError(`${label} is not a decodable image`, { cause: error });
     }
     const detected = metadata.mediaType === 'image/avif' ? 'avif' : metadata.format;
     const extension = detected === 'jpeg' ? 'jpg' : detected;
     if (!extension || !CONTENT_TYPES[extension]) {
-        throw new Error(`${label} must be avif, webp, jpeg, png, or gif`);
+        throw new LegacyUserIconValidationError(`${label} must be avif, webp, jpeg, png, or gif`);
     }
-    if (!metadata.width || metadata.width < 64 || metadata.width > 128 || metadata.height !== metadata.width) {
+    const frameHeight = metadata.pages && metadata.pages > 1 ? metadata.pageHeight : metadata.height;
-        throw new Error(`${label} must be a square image from 64x64 through 128x128`);
+    if (!metadata.width || metadata.width < 64 || metadata.width > 128 || frameHeight !== metadata.width) {
+        throw new LegacyUserIconValidationError(`${label} must be a square image from 64x64 through 128x128`);
     }
     return {
         body,
@@ -119,7 +146,7 @@ const readLegacyIcon = async (directory: string, picture: string, memberNo: numb
         throw new Error(`member.${memberNo}.PICTURE must resolve to a regular non-symlink file`);
     }
     if (info.size === 0 || info.size > MAX_ICON_BYTES) {
-        throw new Error(`member.${memberNo}.PICTURE must be non-empty and at most 50 KiB`);
+        throw new LegacyUserIconValidationError(`member.${memberNo}.PICTURE must be non-empty and at most 50 KiB`);
     }
     const handle = await open(filePath, constants.O_RDONLY | constants.O_NOFOLLOW);
     try {
@@ -248,22 +275,59 @@ export const prepareLegacyUserIcons = async (
         throw new Error('Gateway source has custom icons but gateway.userIcons is not configured');
     }
     if (!config) {
-        return { icons: new Map(), counts: { custom: 0, legacyFiles: 0, existingUploads: 0, uploaded: 0 } };
+        return {
+            icons: new Map(),
+            rejected: new Map(),
+            counts: { custom: 0, legacyFiles: 0, existingUploads: 0, uploaded: 0, rejected: 0 },
+        };
     }
     if (config.uploadSecret.length < 32) {
         throw new Error('gateway.userIcons.uploadSecretFile must contain at least 32 characters');
     }
     const fetchImpl = options.fetchImpl ?? fetch;
     const now = options.now ?? Date.now;
+    const exclusions = new Set(config.excludedMemberNumbers);
+    if (exclusions.size !== config.excludedMemberNumbers.length) {
+        throw new Error('gateway.userIcons.excludedMemberNumbers must not contain duplicates');
+    }
     const validated = await mapWithConcurrency(customRows, options.concurrency ?? 8, async (row) => {
         const memberNo = toNumber(row.NO, 'member.NO');
         const sourcePicture = toStringValue(row.PICTURE, `member.${memberNo}.PICTURE`);
         const normalizedSourcePicture = normalizeLegacyIconPicture(sourcePicture);
         const sourceImageServer = toNumber(row.IMGSVR ?? 0, `member.${memberNo}.IMGSVR`);
         const fallbackCreatedAt = toDate(row.REG_DATE, `member.${memberNo}.REG_DATE`);
-        if (REMOTE_PICTURE.test(normalizedSourcePicture)) {
+        try {
-            const image = await fetchExistingIcon(config, normalizedSourcePicture, memberNo, fetchImpl);
+            if (REMOTE_PICTURE.test(normalizedSourcePicture)) {
+                const image = await fetchExistingIcon(config, normalizedSourcePicture, memberNo, fetchImpl);
+                if (exclusions.has(memberNo)) {
+                    throw new Error(`member.${memberNo} is configured as excluded but its icon is valid`);
+                }
+                return {
+                    kind: 'icon' as const,
+                    base: {
+                        memberNo,
+                        userId: legacyUserId(memberNo),
+                        sourcePicture,
+                        normalizedSourcePicture,
+                        sourceImageServer,
+                        imageServer: 0 as const,
+                        createdAt: iconCreatedAt(sourcePicture, fallbackCreatedAt),
+                        source: 'existing-upload' as const,
+                        sha256: image.sha256,
+                    },
+                    image,
+                    picture: normalizedSourcePicture,
+                };
+            }
+            if (sourceImageServer !== 1) {
+                throw new Error(`member.${memberNo}.PICTURE has an unsupported IMGSVR value`);
+            }
+            const image = await readLegacyIcon(config.sourceDirectory, normalizedSourcePicture, memberNo);
+            if (exclusions.has(memberNo)) {
+                throw new Error(`member.${memberNo} is configured as excluded but its icon is valid`);
+            }
             return {
+                kind: 'icon' as const,
                 base: {
                     memberNo,
                     userId: legacyUserId(memberNo),
@@ -272,42 +336,44 @@ export const prepareLegacyUserIcons = async (
                     sourceImageServer,
                     imageServer: 0 as const,
                     createdAt: iconCreatedAt(sourcePicture, fallbackCreatedAt),
-                    source: 'existing-upload' as const,
+                    source: 'legacy-file' as const,
                     sha256: image.sha256,
                 },
                 image,
-                picture: normalizedSourcePicture,
+                picture: `users/core2026/${deterministicUploadName(memberNo, normalizedSourcePicture, image)}`,
+            };
+        } catch (error) {
+            if (!(error instanceof LegacyUserIconValidationError) || !exclusions.has(memberNo)) throw error;
+            return {
+                kind: 'rejected' as const,
+                rejected: {
+                    memberNo,
+                    userId: legacyUserId(memberNo),
+                    sourcePicture,
+                    normalizedSourcePicture,
+                    sourceImageServer,
+                    reason: error.message,
+                } satisfies RejectedLegacyUserIcon,
             };
         }
-        if (sourceImageServer !== 1) {
-            throw new Error(`member.${memberNo}.PICTURE has an unsupported IMGSVR value`);
-        }
-        const image = await readLegacyIcon(config.sourceDirectory, normalizedSourcePicture, memberNo);
-        return {
-            base: {
-                memberNo,
-                userId: legacyUserId(memberNo),
-                sourcePicture,
-                normalizedSourcePicture,
-                sourceImageServer,
-                imageServer: 0 as const,
-                createdAt: iconCreatedAt(sourcePicture, fallbackCreatedAt),
-                source: 'legacy-file' as const,
-                sha256: image.sha256,
-            },
-            image,
-            picture: `users/core2026/${deterministicUploadName(memberNo, normalizedSourcePicture, image)}`,
-        };
     });
+    const missingExclusions = [...exclusions].filter(
+        (memberNo) => !validated.some((result) => result.kind === 'rejected' && result.rejected.memberNo === memberNo)
+    );
+    if (missingExclusions.length) {
+        throw new Error(`Configured user-icon exclusions were not rejected: ${missingExclusions.join(', ')}`);
+    }
+    const validIcons = validated.filter((result) => result.kind === 'icon');
+    const rejectedIcons = validated.filter((result) => result.kind === 'rejected').map((result) => result.rejected);
     const pictures = new Map<string, number>();
-    for (const icon of validated) {
+    for (const icon of validIcons) {
         const owner = pictures.get(icon.picture);
         if (owner !== undefined && owner !== icon.base.memberNo) {
             throw new Error('Legacy user icon picture is shared by multiple source accounts');
         }
         pictures.set(icon.picture, icon.base.memberNo);
     }
-    const prepared = await mapWithConcurrency(validated, options.concurrency ?? 8, async (icon) => {
+    const prepared = await mapWithConcurrency(validIcons, options.concurrency ?? 8, async (icon) => {
         const picture =
             apply && icon.base.source === 'legacy-file'
                 ? await uploadLegacyIcon(
@@ -323,15 +389,56 @@ export const prepareLegacyUserIcons = async (
     });
     return {
         icons: new Map(prepared.map((icon) => [icon.memberNo, icon])),
+        rejected: new Map(rejectedIcons.map((icon) => [icon.memberNo, icon])),
         counts: {
-            custom: prepared.length,
+            custom: validated.length,
             legacyFiles: prepared.filter((icon) => icon.source === 'legacy-file').length,
             existingUploads: prepared.filter((icon) => icon.source === 'existing-upload').length,
             uploaded: apply ? prepared.filter((icon) => icon.source === 'legacy-file').length : 0,
+            rejected: rejectedIcons.length,
         },
     };
 };
 
+export const syncRejectedUserIcons = async (
+    target: PoolClient,
+    rejected: readonly RejectedLegacyUserIcon[],
+    migratedAt: Date
+): Promise<RejectedLegacyUserIconSyncCounts> => {
+    if (rejected.length === 0) return { currentReset: 0, targetPreserved: 0 };
+    const accounts = await target.query<{ id: string; picture: string; image_server: number }>(
+        `SELECT "id", "picture", "image_server" FROM "app_user" WHERE "id" = ANY($1::text[]) FOR UPDATE`,
+        [rejected.map((icon) => icon.userId)]
+    );
+    const byId = new Map(accounts.rows.map((account) => [account.id, account]));
+    const counts = { currentReset: 0, targetPreserved: 0 };
+    for (const icon of rejected) {
+        const account = byId.get(icon.userId);
+        if (!account) throw new Error(`Imported member account is missing for member.${icon.memberNo}`);
+        const sourceMatchesCurrent =
+            account.picture === icon.sourcePicture || account.picture === icon.normalizedSourcePicture;
+        if (sourceMatchesCurrent) {
+            const reset = await target.query(
+                `UPDATE "app_user"
+                 SET "picture" = 'default.jpg', "image_server" = 0,
+                     "icon_revision" = GREATEST(
+                         COALESCE("icon_revision", "icon_updated_at", "created_at"),
+                         $2::timestamptz
+                     )
+                 WHERE "id" = $1 AND "picture" = $3 AND "image_server" = $4`,
+                [icon.userId, migratedAt, account.picture, account.image_server]
+            );
+            if (reset.rowCount !== 1) {
+                throw new Error(`Target account icon changed concurrently for member.${icon.memberNo}`);
+            }
+            counts.currentReset += 1;
+        } else {
+            counts.targetPreserved += 1;
+        }
+    }
+    return counts;
+};
+
 export const syncImportedUserIcons = async (
     target: PoolClient,
     icons: readonly PreparedLegacyUserIcon[],

tools/legacy-db-migration/src/plan.ts

@@ -24,7 +24,7 @@ export interface PlanRunSummary {
 interface StagePreflight {
     battleResults?: { seasons: number; files: number; bytes: number };
     battleResultManifests?: readonly BattleResultSeasonManifest[];
-    userIcons?: { custom: number; legacyFiles: number; existingUploads: number };
+    userIcons?: { custom: number; legacyFiles: number; existingUploads: number; rejected: number };
 }
 
 const preflightStage = async (stage: ResolvedMigrationStage): Promise<StagePreflight> => {
@@ -90,6 +90,7 @@ const preflightStage = async (stage: ResolvedMigrationStage): Promise<StagePrefl
                     custom: prepared.counts.custom,
                     legacyFiles: prepared.counts.legacyFiles,
                     existingUploads: prepared.counts.existingUploads,
+                    rejected: prepared.counts.rejected,
                 },
             };
         }

tools/legacy-db-migration/test/legacyUserIcons.postgres.test.ts

@@ -2,7 +2,7 @@ import { Pool } from 'pg';
 import { describe, expect, it } from 'vitest';
 
 import { legacyUserId } from '../src/identity.js';
-import { syncImportedUserIcons, type PreparedLegacyUserIcon } from '../src/legacyUserIcons.js';
+import { syncImportedUserIcons, syncRejectedUserIcons, type PreparedLegacyUserIcon } from '../src/legacyUserIcons.js';
 
 const databaseUrl = process.env.LEGACY_ICON_TEST_DATABASE_URL;
 
@@ -69,6 +69,37 @@ describe.skipIf(!databaseUrl)('legacy user icon PostgreSQL synchronization', ()
             );
             expect(library.rows).toHaveLength(3);
             expect(library.rows.filter((row) => row.retired_at !== null)).toHaveLength(1);
+
+            const rejectedUserId = legacyUserId(700_004);
+            await client.query(
+                `INSERT INTO "app_user"
+                    ("id", "login_id", "display_name", "password_hash", "password_salt",
+                     "updated_at", "picture", "image_server")
+                 VALUES ($1, 'icon-test-rejected', '아이콘테스트-제외', 'hash', 'salt',
+                         CURRENT_TIMESTAMP, 'invalid.gif?=20260809', 1)`,
+                [rejectedUserId]
+            );
+            await expect(
+                syncRejectedUserIcons(
+                    client,
+                    [
+                        {
+                            memberNo: 700_004,
+                            userId: rejectedUserId,
+                            sourcePicture: 'invalid.gif?=20260809',
+                            normalizedSourcePicture: 'invalid.gif',
+                            sourceImageServer: 1,
+                            reason: 'not square',
+                        },
+                    ],
+                    new Date('2026-08-24T00:00:00Z')
+                )
+            ).resolves.toEqual({ currentReset: 1, targetPreserved: 0 });
+            const rejectedAccount = await client.query<{ picture: string; image_server: number }>(
+                `SELECT "picture", "image_server" FROM "app_user" WHERE "id" = $1`,
+                [rejectedUserId]
+            );
+            expect(rejectedAccount.rows[0]).toEqual({ picture: 'default.jpg', image_server: 0 });
         } finally {
             await client.query('ROLLBACK');
             client.release();

tools/legacy-db-migration/test/legacyUserIcons.test.ts

@@ -11,6 +11,7 @@ import { legacyUserId } from '../src/identity.js';
 import {
     prepareLegacyUserIcons,
     syncImportedUserIcons,
+    syncRejectedUserIcons,
     type LegacyUserIconTransferConfig,
     type PreparedLegacyUserIcon,
 } from '../src/legacyUserIcons.js';
@@ -36,6 +37,7 @@ const createFixture = async (): Promise<{ config: LegacyUserIconTransferConfig;
             uploadBaseUrl: 'https://upload.test',
             publicBaseUrl: 'https://public.test/icons',
             uploadSecret: 's'.repeat(32),
+            excludedMemberNumbers: [],
         },
         png,
     };
@@ -57,7 +59,13 @@ describe('legacy user icon transfer', () => {
         const first = await prepareLegacyUserIcons([sourceRow()], config, false, { fetchImpl });
         const second = await prepareLegacyUserIcons([sourceRow()], config, false, { fetchImpl });
 
-        expect(first.counts).toEqual({ custom: 1, legacyFiles: 1, existingUploads: 0, uploaded: 0 });
+        expect(first.counts).toEqual({
+            custom: 1,
+            legacyFiles: 1,
+            existingUploads: 0,
+            uploaded: 0,
+            rejected: 0,
+        });
         expect(first.icons.get(7)?.picture).toMatch(/^users\/core2026\/[a-f0-9]{32}\.png$/u);
         expect(second.icons.get(7)?.picture).toBe(first.icons.get(7)?.picture);
         expect(fetchImpl).not.toHaveBeenCalled();
@@ -123,7 +131,13 @@ describe('legacy user icon transfer', () => {
             { fetchImpl }
         );
 
-        expect(result.counts).toEqual({ custom: 1, legacyFiles: 0, existingUploads: 1, uploaded: 0 });
+        expect(result.counts).toEqual({
+            custom: 1,
+            legacyFiles: 0,
+            existingUploads: 1,
+            uploaded: 0,
+            rejected: 0,
+        });
         expect(result.icons.get(7)?.picture).toBe(picture);
         expect(fetchImpl).toHaveBeenCalledTimes(1);
         expect(String(fetchImpl.mock.calls[0]?.[0])).toBe(`https://public.test/icons/${picture}`);
@@ -135,6 +149,40 @@ describe('legacy user icon transfer', () => {
         );
     });
 
+    it('permits only an explicitly reviewed member exclusion whose bytes remain invalid', async () => {
+        const { config } = await createFixture();
+        const invalidGif = await sharp({
+            create: { width: 64, height: 65, channels: 4, background: '#336699ff' },
+        })
+            .gif()
+            .toBuffer();
+        await writeFile(path.join(config.sourceDirectory, 'invalid.gif'), invalidGif);
+        config.excludedMemberNumbers = [7];
+
+        const result = await prepareLegacyUserIcons([sourceRow({ PICTURE: 'invalid.gif?=20260809' })], config, true, {
+            fetchImpl: vi.fn<typeof fetch>(),
+        });
+
+        expect(result.counts).toEqual({
+            custom: 1,
+            legacyFiles: 0,
+            existingUploads: 0,
+            uploaded: 0,
+            rejected: 1,
+        });
+        expect(result.rejected.get(7)?.reason).toContain('square image');
+        expect(result.icons.size).toBe(0);
+    });
+
+    it('rejects a stale exclusion when the configured member icon is valid', async () => {
+        const { config } = await createFixture();
+        config.excludedMemberNumbers = [7];
+
+        await expect(prepareLegacyUserIcons([sourceRow()], config, false)).rejects.toThrow(
+            'configured as excluded but its icon is valid'
+        );
+    });
+
     it('links an unchanged Ref selection while preserving newer Core selections', async () => {
         const imported = (memberNo: number, sourcePicture: string, picture: string): PreparedLegacyUserIcon => ({
             memberNo,
@@ -179,4 +227,30 @@ describe('legacy user icon transfer', () => {
         expect(inserts).toHaveLength(3);
         expect(inserts[2]?.[1]?.[3]).toEqual(new Date('2026-08-24T00:00:00Z'));
     });
+
+    it('resets only the still-selected invalid Ref icon', async () => {
+        const userId = legacyUserId(7);
+        const rejected = {
+            memberNo: 7,
+            userId,
+            sourcePicture: 'invalid.gif?=20260809',
+            normalizedSourcePicture: 'invalid.gif',
+            sourceImageServer: 1,
+            reason: 'not square',
+        };
+        const query = vi.fn(async (sql: string, _parameters?: readonly unknown[]) => {
+            if (sql.includes('FROM "app_user"')) {
+                return {
+                    rows: [{ id: userId, picture: rejected.sourcePicture, image_server: 1 }],
+                    rowCount: 1,
+                } as QueryResult;
+            }
+            return { rows: [], rowCount: 1 } as unknown as QueryResult;
+        });
+
+        await expect(
+            syncRejectedUserIcons({ query } as unknown as PoolClient, [rejected], new Date('2026-08-24T00:00:00Z'))
+        ).resolves.toEqual({ currentReset: 1, targetPreserved: 0 });
+        expect(String(query.mock.calls[1]?.[0])).toContain(`SET "picture" = 'default.jpg'`);
+    });
 });