diff --git a/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php b/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
index 555a47691..6f2a3180e 100644
--- a/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
+++ b/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
@@ -512,6 +512,8 @@ class FirstVisitConversionLogic
                 $channelCode,
                 $channel['channel_name'] ?? '',
                 $channel['source_tag_name'] ?? '',
+                $channel['legacy_channel_name'] ?? '',
+                $channel['legacy_source_tag_name'] ?? '',
             ]
         ), static fn (string $value): bool => $value !== '')));
     }
diff --git a/server/app/adminapi/logic/stats/ConversionLogic.php b/server/app/adminapi/logic/stats/ConversionLogic.php
index 1dd37560b..cd06b571a 100755
--- a/server/app/adminapi/logic/stats/ConversionLogic.php
+++ b/server/app/adminapi/logic/stats/ConversionLogic.php
@@ -353,7 +353,7 @@ class ConversionLogic
             'departments' => self::buildDepartmentOptions($visibleAdminIds, $eligibleDeptIds, $allowedDeptIds),
             'assistants' => DiagnosisLogic::getAssistants($adminId, $adminInfo),
             'doctors' => self::buildDoctorOptions($visibleAdminIds),
-            'media_channels' => self::buildMediaChannelOptions($visibleAdminIds, $eligibleDeptIds, $allowedDeptIds),
+            'media_channels' => self::buildMediaChannelOptions(),
         ];
     }
 
@@ -411,40 +411,16 @@ class ConversionLogic
     }
 
     /**
-     * 媒体渠道下拉：按可见部门绑定的渠道收窄。
+     * 媒体渠道下拉：返回全局启用渠道；事实数据仍由 DataScope 单独约束。
      *
      * @return array<int, array<string, mixed>>
      */
-    private static function buildMediaChannelOptions(?array $visibleAdminIds, array $eligibleDeptIds, ?array $allowedDeptIds = null): array
+    private static function buildMediaChannelOptions(): array
     {
-        $allOptions = MediaChannelService::getOptions();
-        if ($visibleAdminIds === null) {
-            return $allOptions;
-        }
-        if (!AccountCost::supportsDeptBinding()) {
-            return $allOptions;
-        }
-
-        $allowedDeptIds ??= self::resolveFilterAllowedDeptIds($visibleAdminIds, $eligibleDeptIds);
-        if ($allowedDeptIds === []) {
-            return [];
-        }
-
-        $allowedCodes = Db::name('account_cost')
-            ->whereIn('dept_id', $allowedDeptIds)
-            ->where('media_channel_code', '<>', '')
-            ->distinct(true)
-            ->column('media_channel_code');
-        $allowedCodeSet = array_fill_keys(array_filter(array_map('strval', $allowedCodes)), true);
-        if ($allowedCodeSet === []) {
-            return [];
-        }
-
-        return array_values(array_filter($allOptions, static function ($option) use ($allowedCodeSet): bool {
-            $code = is_array($option) ? (string)($option['code'] ?? '') : '';
-
-            return $code !== '' && isset($allowedCodeSet[$code]);
-        }));
+        // Channels are dimension values, while account_cost rows are optional
+        // facts. Using cost bindings as an option whitelist hid valid labels and
+        // made the dropdown change when department/assistant filters changed.
+        return MediaChannelService::getOptions();
     }
 
     /**
diff --git a/server/app/common/service/qywx/MediaChannelService.php b/server/app/common/service/qywx/MediaChannelService.php
index 56da863c6..9e157e906 100755
--- a/server/app/common/service/qywx/MediaChannelService.php
+++ b/server/app/common/service/qywx/MediaChannelService.php
@@ -11,6 +11,18 @@ use think\db\Query;
 
 class MediaChannelService
 {
+    private const ACTIVE_ROWS_CACHE_TTL_SECONDS = 1.0;
+    private const SCAN_DUPLICATE_UPDATE_FIELDS = [
+        'source_group_name',
+        'last_seen_time',
+        'update_time',
+    ];
+
+    /** @var array<int, array<string, mixed>>|null */
+    private static ?array $activeChannelRowsCache = null;
+
+    private static float $activeChannelRowsCachedAt = 0.0;
+
     /**
      * 与业绩看板「渠道来源」相同的分组（按 source_group_name），不含客户数统计。
      *
@@ -21,11 +33,7 @@ class MediaChannelService
      */
     public static function getOptionGroups(): array
     {
-        $rows = QywxMediaChannel::where('status', 1)
-            ->field('channel_code, channel_name, source_group_name')
-            ->order('source_group_name asc, id asc')
-            ->select()
-            ->toArray();
+        $rows = self::getActiveChannelRows();
 
         if ($rows === []) {
             return [];
@@ -60,11 +68,17 @@ class MediaChannelService
      */
     public static function getOptions(): array
     {
-        $rows = QywxMediaChannel::where('status', 1)
-            ->field('channel_code, channel_name')
-            ->order('channel_name asc, id asc')
-            ->select()
-            ->toArray();
+        $rows = self::getActiveChannelRows();
+        usort($rows, static function (array $a, array $b): int {
+            $nameCompare = strnatcasecmp(
+                (string) ($a['channel_name'] ?? ''),
+                (string) ($b['channel_name'] ?? '')
+            );
+
+            return $nameCompare !== 0
+                ? $nameCompare
+                : strcmp((string) ($a['channel_code'] ?? ''), (string) ($b['channel_code'] ?? ''));
+        });
 
         return array_map(static fn (array $row): array => [
             'code' => (string) ($row['channel_code'] ?? ''),
@@ -74,9 +88,9 @@ class MediaChannelService
 
     public static function getDefaultCode(): string
     {
-        return (string) QywxMediaChannel::where('status', 1)
-            ->order('id asc')
-            ->value('channel_code');
+        $rows = self::getActiveChannelRows();
+
+        return (string) ($rows[0]['channel_code'] ?? '');
     }
 
     public static function isValidCode(string $channelCode): bool
@@ -86,9 +100,7 @@ class MediaChannelService
             return false;
         }
 
-        return QywxMediaChannel::where('status', 1)
-            ->where('channel_code', $channelCode)
-            ->count() > 0;
+        return self::getChannelByCode($channelCode) !== null;
     }
 
     public static function normalizeStatsCode(string $channelCode): string
@@ -106,11 +118,31 @@ class MediaChannelService
             return null;
         }
 
-        $row = QywxMediaChannel::where('status', 1)
-            ->where('channel_code', $channelCode)
-            ->find();
+        $model = QywxMediaChannel::where('channel_code', $channelCode)->find();
 
-        return $row ? $row->toArray() : null;
+        if ($model !== null) {
+            $row = $model->toArray();
+            if ((int) ($row['status'] ?? 0) !== 1) {
+                return null;
+            }
+
+            $tagId = trim((string) ($row['source_tag_id'] ?? ''));
+            if ($tagId === '') {
+                return $row;
+            }
+
+            $merged = self::mergeConfiguredChannelsWithTags([$row], self::loadCurrentTagRows([$tagId]));
+
+            return $merged[0] ?? $row;
+        }
+
+        foreach (self::getActiveChannelRows() as $row) {
+            if ((string) ($row['channel_code'] ?? '') === $channelCode) {
+                return $row;
+            }
+        }
+
+        return null;
     }
 
     public static function getNameByCode(string $channelCode): string
@@ -134,6 +166,8 @@ class MediaChannelService
         $names = array_values(array_unique(array_filter([
             trim((string) ($channel['channel_name'] ?? '')),
             trim((string) ($channel['source_tag_name'] ?? '')),
+            trim((string) ($channel['legacy_channel_name'] ?? '')),
+            trim((string) ($channel['legacy_source_tag_name'] ?? '')),
         ])));
 
         if ($names === []) {
@@ -233,6 +267,7 @@ class MediaChannelService
 
         while (true) {
             $rows = QywxExternalContact::where('id', '>', $lastId)
+                ->whereNull('delete_time')
                 ->field('id, follow_users')
                 ->order('id asc')
                 ->limit($batchSize)
@@ -276,20 +311,17 @@ class MediaChannelService
                         'update_time' => $now,
                     ];
 
-                    Db::name('qywx_media_channel')->duplicate([
-                        'channel_name',
-                        'source_tag_id',
-                        'source_tag_name',
-                        'source_group_name',
-                        'status',
-                        'last_seen_time',
-                        'update_time',
-                    ])->insert($rowData);
+                    Db::name('qywx_media_channel')
+                        ->duplicate(self::SCAN_DUPLICATE_UPDATE_FIELDS)
+                        ->insert($rowData);
                     $upserted++;
                 }
             }
         }
 
+        self::$activeChannelRowsCache = null;
+        self::$activeChannelRowsCachedAt = 0.0;
+
         return [
             'scanned_contacts' => $scannedContacts,
             'discovered_tags' => count($discoveredTags),
@@ -297,6 +329,191 @@ class MediaChannelService
         ];
     }
 
+    /**
+     * Combine the persistent channel registry with the latest tag snapshots in
+     * the normalized relation table. The registry keeps stable channel codes
+     * and historical name-only channels; relation rows supply newly discovered
+     * tags and names for tags that were renamed in WeCom.
+     *
+     * @return array<int, array<string, mixed>>
+     */
+    private static function getActiveChannelRows(): array
+    {
+        $now = microtime(true);
+        if (self::$activeChannelRowsCache !== null
+            && ($now - self::$activeChannelRowsCachedAt) < self::ACTIVE_ROWS_CACHE_TTL_SECONDS) {
+            return self::$activeChannelRowsCache;
+        }
+
+        $configuredRows = QywxMediaChannel::field(
+            'id, channel_code, channel_name, source_tag_id, source_tag_name, source_group_name, '
+            . 'tag_uniq_key, status, last_seen_time, create_time, update_time'
+        )
+            ->order('id asc')
+            ->select()
+            ->toArray();
+
+        $rows = self::mergeConfiguredChannelsWithTags($configuredRows, self::loadCurrentTagRows());
+        self::$activeChannelRowsCache = $rows;
+        self::$activeChannelRowsCachedAt = microtime(true);
+
+        return $rows;
+    }
+
+    /**
+     * @param string[]|null $tagIds null loads all current tags
+     * @return array<int, array{source_tag_id: string, source_tag_name: string, source_group_name: string}>
+     */
+    private static function loadCurrentTagRows(?array $tagIds = null): array
+    {
+        $bindings = [];
+        $tagFilter = '';
+        if ($tagIds !== null) {
+            $tagIds = array_values(array_unique(array_filter(array_map(
+                static fn ($tagId): string => trim((string) $tagId),
+                $tagIds
+            ), static fn (string $tagId): bool => $tagId !== '')));
+            if ($tagIds === []) {
+                return [];
+            }
+
+            $tagFilter = ' AND newest_tag.tag_id IN (' . implode(', ', array_fill(0, count($tagIds), '?')) . ')';
+            $bindings = $tagIds;
+        }
+
+        $tagTable = self::tableWithPrefix('qywx_external_contact_tag');
+        $sql = <<<SQL
+SELECT latest_tag.tag_id AS source_tag_id,
+       COALESCE(latest_tag.tag_name, '') AS source_tag_name,
+       COALESCE(latest_tag.group_name, '') AS source_group_name
+FROM {$tagTable} latest_tag
+INNER JOIN (
+    SELECT latest_time.tag_id, MAX(tag_at_time.id) AS latest_id
+    FROM (
+        SELECT newest_tag.tag_id, MAX(newest_tag.update_time) AS latest_update_time
+        FROM {$tagTable} newest_tag
+        WHERE newest_tag.tag_id <> ''
+          {$tagFilter}
+        GROUP BY newest_tag.tag_id
+    ) latest_time
+    INNER JOIN {$tagTable} tag_at_time
+        ON tag_at_time.tag_id = latest_time.tag_id
+       AND tag_at_time.update_time = latest_time.latest_update_time
+    GROUP BY latest_time.tag_id
+) selected_tag
+    ON selected_tag.latest_id = latest_tag.id
+ORDER BY latest_tag.tag_id ASC
+SQL;
+
+        return array_map(static fn (array $row): array => [
+            'source_tag_id' => trim((string) ($row['source_tag_id'] ?? '')),
+            'source_tag_name' => trim((string) ($row['source_tag_name'] ?? '')),
+            'source_group_name' => trim((string) ($row['source_group_name'] ?? '')),
+        ], Db::query($sql, $bindings));
+    }
+
+    /**
+     * Disabled configured tags stay disabled. Active configured rows keep their
+     * stable codes, while automatic display names follow the newest tag name.
+     * Tags not yet present in the registry receive the same deterministic code
+     * that the scanner would create.
+     *
+     * @param array<int, array<string, mixed>> $configuredRows
+     * @param array<int, array<string, mixed>> $tagRows
+     * @return array<int, array<string, mixed>>
+     */
+    private static function mergeConfiguredChannelsWithTags(array $configuredRows, array $tagRows): array
+    {
+        $tagMap = [];
+        foreach ($tagRows as $tagRow) {
+            $tagId = trim((string) ($tagRow['source_tag_id'] ?? $tagRow['tag_id'] ?? ''));
+            if ($tagId === '') {
+                continue;
+            }
+
+            $tagMap[$tagId] = [
+                'source_tag_id' => $tagId,
+                'source_tag_name' => trim((string) ($tagRow['source_tag_name'] ?? $tagRow['tag_name'] ?? '')),
+                'source_group_name' => trim((string) ($tagRow['source_group_name'] ?? $tagRow['group_name'] ?? '')),
+            ];
+        }
+
+        $result = [];
+        $configuredTagIds = [];
+        $configuredCodes = [];
+        foreach ($configuredRows as $configuredRow) {
+            $channelCode = trim((string) ($configuredRow['channel_code'] ?? ''));
+            $tagId = trim((string) ($configuredRow['source_tag_id'] ?? ''));
+            if ($channelCode !== '') {
+                $configuredCodes[$channelCode] = true;
+            }
+            if ($tagId !== '') {
+                // A disabled registry row is an explicit opt-out and must not be
+                // reintroduced as a dynamically discovered channel.
+                $configuredTagIds[$tagId] = true;
+            }
+            if ($channelCode === '' || (int) ($configuredRow['status'] ?? 0) !== 1) {
+                continue;
+            }
+
+            $row = $configuredRow;
+            $currentTag = $tagId !== '' ? ($tagMap[$tagId] ?? null) : null;
+            if ($currentTag !== null) {
+                $oldTagName = trim((string) ($row['source_tag_name'] ?? ''));
+                $oldChannelName = trim((string) ($row['channel_name'] ?? ''));
+                $currentTagName = (string) $currentTag['source_tag_name'];
+
+                if ($currentTagName !== '') {
+                    if ($oldTagName !== '' && $oldTagName !== $currentTagName) {
+                        $row['legacy_source_tag_name'] = $oldTagName;
+                    }
+
+                    $isAutomaticName = $oldChannelName === ''
+                        || $oldChannelName === $oldTagName
+                        || $oldChannelName === $tagId;
+                    if ($isAutomaticName) {
+                        if ($oldChannelName !== '' && $oldChannelName !== $currentTagName) {
+                            $row['legacy_channel_name'] = $oldChannelName;
+                        }
+                        $row['channel_name'] = $currentTagName;
+                    }
+                    $row['source_tag_name'] = $currentTagName;
+                }
+                $row['source_group_name'] = (string) $currentTag['source_group_name'];
+            }
+
+            $result[] = $row;
+        }
+
+        foreach ($tagMap as $tagId => $tagRow) {
+            if (isset($configuredTagIds[$tagId])) {
+                continue;
+            }
+
+            $channelName = (string) ($tagRow['source_tag_name'] ?? '');
+            $channelCode = self::buildChannelCode($tagId, $channelName);
+            if ($channelCode === '' || isset($configuredCodes[$channelCode])) {
+                continue;
+            }
+            $configuredCodes[$channelCode] = true;
+            $result[] = [
+                'id' => 0,
+                'channel_code' => $channelCode,
+                'channel_name' => $channelName !== '' ? $channelName : $tagId,
+                'source_tag_id' => $tagId,
+                'source_tag_name' => $channelName,
+                'source_group_name' => (string) ($tagRow['source_group_name'] ?? ''),
+                'tag_uniq_key' => self::buildTagUniqKey($tagId, $channelName),
+                'status' => 1,
+                'last_seen_time' => 0,
+                'create_time' => 0,
+                'update_time' => 0,
+            ];
+        }
+
+        return $result;
+    }
+
     /**
      * @param array<string, mixed> $channel
      * @return string[]
diff --git a/server/sql/1.9.20260808/add_media_channel_stats_index.sql b/server/sql/1.9.20260808/add_media_channel_stats_index.sql
index 2d9b88489..1f139c350 100644
--- a/server/sql/1.9.20260808/add_media_channel_stats_index.sql
+++ b/server/sql/1.9.20260808/add_media_channel_stats_index.sql
@@ -17,3 +17,22 @@ SET @add_idx_tag_ext_sql := IF(
 PREPARE add_idx_tag_ext_stmt FROM @add_idx_tag_ext_sql;
 EXECUTE add_idx_tag_ext_stmt;
 DEALLOCATE PREPARE add_idx_tag_ext_stmt;
+
+-- 渠道选项按标签读取最新名称，覆盖 tag_id + update_time 可避免重复扫描关系表。
+SET @idx_tag_update_exists := (
+    SELECT COUNT(*)
+    FROM information_schema.STATISTICS
+    WHERE TABLE_SCHEMA = DATABASE()
+      AND TABLE_NAME = 'zyt_qywx_external_contact_tag'
+      AND INDEX_NAME = 'idx_tag_update'
+);
+
+SET @add_idx_tag_update_sql := IF(
+    @idx_tag_update_exists = 0,
+    'ALTER TABLE `zyt_qywx_external_contact_tag` ADD INDEX `idx_tag_update` (`tag_id`, `update_time`)',
+    'SELECT 1'
+);
+
+PREPARE add_idx_tag_update_stmt FROM @add_idx_tag_update_sql;
+EXECUTE add_idx_tag_update_stmt;
+DEALLOCATE PREPARE add_idx_tag_update_stmt;
diff --git a/server/tests/MediaChannelOptionsMergeTest.php b/server/tests/MediaChannelOptionsMergeTest.php
new file mode 100644
index 000000000..cc4911526
--- /dev/null
+++ b/server/tests/MediaChannelOptionsMergeTest.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+use app\common\service\qywx\MediaChannelService;
+use think\facade\Db;
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+$mergeMethod = new ReflectionMethod(MediaChannelService::class, 'mergeConfiguredChannelsWithTags');
+$mergeMethod->setAccessible(true);
+$scanUpdateFields = (new ReflectionClass(MediaChannelService::class))
+    ->getReflectionConstant('SCAN_DUPLICATE_UPDATE_FIELDS')
+    ?->getValue();
+if (!is_array($scanUpdateFields)
+    || array_intersect(['channel_name', 'source_tag_name', 'status'], $scanUpdateFields) !== []) {
+    throw new RuntimeException('Channel scan would overwrite rename aliases, manual labels, or disabled status');
+}
+
+$configuredRows = [
+    [
+        'id' => 1,
+        'channel_code' => 'stable-a',
+        'channel_name' => 'Old tag name',
+        'source_tag_id' => 'tag-a',
+        'source_tag_name' => 'Old tag name',
+        'source_group_name' => 'Old group',
+        'status' => 1,
+    ],
+    [
+        'id' => 2,
+        'channel_code' => 'manual-name',
+        'channel_name' => 'Manual campaign label',
+        'source_tag_id' => 'tag-manual',
+        'source_tag_name' => 'Old manual tag',
+        'source_group_name' => 'Old group',
+        'status' => 1,
+    ],
+    [
+        'id' => 3,
+        'channel_code' => 'disabled-tag',
+        'channel_name' => 'Disabled tag',
+        'source_tag_id' => 'tag-disabled',
+        'source_tag_name' => 'Disabled tag',
+        'source_group_name' => 'Group',
+        'status' => 0,
+    ],
+    [
+        'id' => 4,
+        'channel_code' => 'legacy-name-only',
+        'channel_name' => 'Legacy name-only channel',
+        'source_tag_id' => '',
+        'source_tag_name' => 'Legacy name-only channel',
+        'source_group_name' => 'Legacy',
+        'status' => 1,
+    ],
+];
+
+$tagRows = [
+    [
+        'source_tag_id' => 'tag-a',
+        'source_tag_name' => 'Renamed tag',
+        'source_group_name' => 'New group',
+    ],
+    [
+        'source_tag_id' => 'tag-manual',
+        'source_tag_name' => 'Renamed manual tag',
+        'source_group_name' => 'New group',
+    ],
+    [
+        'source_tag_id' => 'tag-disabled',
+        'source_tag_name' => 'Disabled tag returned by relation table',
+        'source_group_name' => 'Group',
+    ],
+    [
+        'source_tag_id' => 'tag-new',
+        'source_tag_name' => 'Newly discovered tag',
+        'source_group_name' => 'New group',
+    ],
+];
+
+/** @var array<int, array<string, mixed>> $mergedRows */
+$mergedRows = $mergeMethod->invoke(null, $configuredRows, $tagRows);
+$byCode = [];
+foreach ($mergedRows as $row) {
+    $byCode[(string) ($row['channel_code'] ?? '')] = $row;
+}
+
+$renamed = $byCode['stable-a'] ?? null;
+if (!is_array($renamed)
+    || ($renamed['channel_name'] ?? '') !== 'Renamed tag'
+    || ($renamed['source_tag_name'] ?? '') !== 'Renamed tag'
+    || ($renamed['source_group_name'] ?? '') !== 'New group'
+    || ($renamed['legacy_channel_name'] ?? '') !== 'Old tag name'
+    || ($renamed['legacy_source_tag_name'] ?? '') !== 'Old tag name') {
+    throw new RuntimeException('Automatic channel name was not refreshed with backward-compatible aliases');
+}
+
+$manual = $byCode['manual-name'] ?? null;
+if (!is_array($manual)
+    || ($manual['channel_name'] ?? '') !== 'Manual campaign label'
+    || ($manual['source_tag_name'] ?? '') !== 'Renamed manual tag'
+    || ($manual['legacy_source_tag_name'] ?? '') !== 'Old manual tag') {
+    throw new RuntimeException('Manual display name or refreshed tag metadata was not preserved');
+}
+
+if (isset($byCode['disabled-tag']) || isset($byCode['tag_tag-disabled'])) {
+    throw new RuntimeException('Explicitly disabled tag was reintroduced');
+}
+
+$newTag = $byCode['tag_tag-new'] ?? null;
+if (!is_array($newTag)
+    || ($newTag['channel_name'] ?? '') !== 'Newly discovered tag'
+    || ($newTag['source_tag_id'] ?? '') !== 'tag-new') {
+    throw new RuntimeException('New relation-table tag was not added with a deterministic channel code');
+}
+
+if (!isset($byCode['legacy-name-only'])) {
+    throw new RuntimeException('Historical name-only channel was removed');
+}
+
+if (in_array('--integration', $argv, true)) {
+    $app = new think\App();
+    $app->initialize();
+
+    $loadTagsMethod = new ReflectionMethod(MediaChannelService::class, 'loadCurrentTagRows');
+    $loadTagsMethod->setAccessible(true);
+    $activeRowsMethod = new ReflectionMethod(MediaChannelService::class, 'getActiveChannelRows');
+    $activeRowsMethod->setAccessible(true);
+
+    $startedAt = microtime(true);
+    /** @var array<int, array<string, mixed>> $currentTags */
+    $currentTags = $loadTagsMethod->invoke(null, null);
+    /** @var array<int, array<string, mixed>> $activeRows */
+    $activeRows = $activeRowsMethod->invoke(null);
+    $options = MediaChannelService::getOptions();
+    $elapsedMs = round((microtime(true) - $startedAt) * 1000, 1);
+
+    $activeByTagId = [];
+    foreach ($activeRows as $row) {
+        $tagId = trim((string) ($row['source_tag_id'] ?? ''));
+        if ($tagId !== '') {
+            $activeByTagId[$tagId] = $row;
+        }
+    }
+    $disabledTagIds = array_fill_keys(array_map(
+        'strval',
+        Db::name('qywx_media_channel')
+            ->where('status', 0)
+            ->where('source_tag_id', '<>', '')
+            ->column('source_tag_id')
+    ), true);
+
+    foreach ($currentTags as $tag) {
+        $tagId = (string) ($tag['source_tag_id'] ?? '');
+        if ($tagId === '' || isset($disabledTagIds[$tagId])) {
+            continue;
+        }
+        $channel = $activeByTagId[$tagId] ?? null;
+        if (!is_array($channel)) {
+            throw new RuntimeException("Current relation-table tag {$tagId} is absent from channel options");
+        }
+        $currentName = (string) ($tag['source_tag_name'] ?? '');
+        if ($currentName !== '' && ($channel['source_tag_name'] ?? '') !== $currentName) {
+            throw new RuntimeException("Current tag name for {$tagId} was not refreshed");
+        }
+    }
+
+    if (count($options) !== count($activeRows)) {
+        throw new RuntimeException('Public option count differs from merged active channel count');
+    }
+
+    $matchingNames = array_values(array_map(
+        static fn (array $option): string => (string) ($option['name'] ?? ''),
+        array_filter(
+            $options,
+            static fn (array $option): bool => mb_strpos((string) ($option['name'] ?? ''), '4') !== false
+        )
+    ));
+    echo json_encode([
+        'current_tag_count' => count($currentTags),
+        'channel_option_count' => count($options),
+        'elapsed_ms' => $elapsedMs,
+        'matching_4' => $matchingNames,
+    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES), "\n";
+}
+
+echo "MEDIA_CHANNEL_OPTIONS_MERGE_OK\n";