diff --git a/app/Console/Commands/SyncMsgToManticore.php b/app/Console/Commands/SyncMsgToManticore.php
new file mode 100644
index 000000000..f3060e73f
--- /dev/null
+++ b/app/Console/Commands/SyncMsgToManticore.php
@@ -0,0 +1,227 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\WebSocketDialogMsg;
+use App\Module\Apps;
+use App\Module\Manticore\ManticoreMsg;
+use App\Module\Manticore\ManticoreKeyValue;
+use Cache;
+use Illuminate\Console\Command;
+
+class SyncMsgToManticore extends Command
+{
+    /**
+     * 更新数据（MVA 方案：allowed_users 在同步时自动写入）
+     * --f: 全量更新 (默认)
+     * --i: 增量更新（从上次更新的最后一个ID接上）
+     *
+     * 清理数据
+     * --c: 清除索引
+     *
+     * 其他选项
+     * --dialog: 指定对话ID（仅同步该对话的消息）
+     */
+
+    protected $signature = 'manticore:sync-msgs {--f} {--i} {--c} {--batch=100} {--dialog=}';
+    protected $description = '同步消息数据到 Manticore Search（MVA 权限方案）';
+
+    /**
+     * @return int
+     */
+    public function handle(): int
+    {
+        if (!Apps::isInstalled("manticore")) {
+            $this->error("应用「Manticore Search」未安装");
+            return 1;
+        }
+
+        // 注册信号处理器
+        if (extension_loaded('pcntl')) {
+            pcntl_async_signals(true);
+            pcntl_signal(SIGINT, [$this, 'handleSignal']);
+            pcntl_signal(SIGTERM, [$this, 'handleSignal']);
+        }
+
+        // 检查锁
+        $lockInfo = $this->getLock();
+        if ($lockInfo) {
+            $this->error("命令已在运行中，开始时间: {$lockInfo['started_at']}");
+            return 1;
+        }
+
+        $this->setLock();
+
+        // 清除索引
+        if ($this->option('c')) {
+            $this->info('清除索引...');
+            ManticoreMsg::clear();
+            $this->info("索引删除成功");
+            $this->releaseLock();
+            return 0;
+        }
+
+        $dialogId = $this->option('dialog') ? intval($this->option('dialog')) : 0;
+
+        if ($dialogId > 0) {
+            $this->info("开始同步对话 {$dialogId} 的消息数据（MVA 方案：allowed_users 自动内联）...");
+            $this->syncDialogMsgs($dialogId);
+        } else {
+            $this->info('开始同步消息数据（MVA 方案：allowed_users 自动内联）...');
+            $this->syncMsgs();
+        }
+
+        $this->info("\n同步完成");
+        $this->releaseLock();
+        return 0;
+    }
+
+    private function getLock(): ?array
+    {
+        $lockKey = md5($this->signature);
+        return Cache::has($lockKey) ? Cache::get($lockKey) : null;
+    }
+
+    private function setLock(): void
+    {
+        $lockKey = md5($this->signature);
+        Cache::put($lockKey, ['started_at' => date('Y-m-d H:i:s')], 600);
+    }
+
+    private function releaseLock(): void
+    {
+        $lockKey = md5($this->signature);
+        Cache::forget($lockKey);
+    }
+
+    public function handleSignal(int $signal): void
+    {
+        $this->releaseLock();
+        exit(0);
+    }
+
+    /**
+     * 同步所有消息
+     */
+    private function syncMsgs(): void
+    {
+        $lastKey = "sync:manticoreMsgLastId";
+        $lastId = $this->option('i') ? intval(ManticoreKeyValue::get($lastKey, 0)) : 0;
+
+        if ($lastId > 0) {
+            $this->info("\n增量同步消息数据（从ID {$lastId} 开始）...");
+        } else {
+            $this->info("\n全量同步消息数据...");
+        }
+
+        // 构建基础查询条件
+        // 排除：软删除、机器人消息、空 key 消息
+        // 只包含：可索引的消息类型
+        $baseQuery = WebSocketDialogMsg::where('id', '>', $lastId)
+            ->whereNull('deleted_at')
+            ->where('bot', '!=', 1)
+            ->whereNotNull('key')
+            ->where('key', '!=', '')
+            ->whereIn('type', ManticoreMsg::INDEXABLE_TYPES);
+
+        $num = 0;
+        $count = $baseQuery->count();
+        $batchSize = $this->option('batch');
+
+        $total = 0;
+        $lastNum = 0;
+
+        do {
+            $msgs = WebSocketDialogMsg::where('id', '>', $lastId)
+                ->whereNull('deleted_at')
+                ->where('bot', '!=', 1)
+                ->whereNotNull('key')
+                ->where('key', '!=', '')
+                ->whereIn('type', ManticoreMsg::INDEXABLE_TYPES)
+                ->orderBy('id')
+                ->limit($batchSize)
+                ->get();
+
+            if ($msgs->isEmpty()) {
+                break;
+            }
+
+            $num += count($msgs);
+            $progress = $count > 0 ? round($num / $count * 100, 2) : 100;
+            if ($progress < 100) {
+                $progress = number_format($progress, 2);
+            }
+            $this->info("{$num}/{$count} ({$progress}%) 正在同步消息ID {$msgs->first()->id} ~ {$msgs->last()->id} ({$total}|{$lastNum})");
+
+            $this->setLock();
+
+            $lastNum = ManticoreMsg::batchSync($msgs);
+            $total += $lastNum;
+
+            $lastId = $msgs->last()->id;
+            ManticoreKeyValue::set($lastKey, $lastId);
+        } while (count($msgs) == $batchSize);
+
+        $this->info("同步消息结束 - 最后ID {$lastId}");
+        $this->info("已索引消息数量: " . ManticoreMsg::getIndexedCount());
+    }
+
+    /**
+     * 同步指定对话的消息
+     *
+     * @param int $dialogId 对话ID
+     */
+    private function syncDialogMsgs(int $dialogId): void
+    {
+        $this->info("\n同步对话 {$dialogId} 的消息数据...");
+
+        $baseQuery = WebSocketDialogMsg::where('dialog_id', $dialogId)
+            ->whereNull('deleted_at')
+            ->where('bot', '!=', 1)
+            ->whereNotNull('key')
+            ->where('key', '!=', '')
+            ->whereIn('type', ManticoreMsg::INDEXABLE_TYPES);
+
+        $num = 0;
+        $count = $baseQuery->count();
+        $batchSize = $this->option('batch');
+        $lastId = 0;
+
+        $total = 0;
+        $lastNum = 0;
+
+        do {
+            $msgs = WebSocketDialogMsg::where('dialog_id', $dialogId)
+                ->where('id', '>', $lastId)
+                ->whereNull('deleted_at')
+                ->where('bot', '!=', 1)
+                ->whereNotNull('key')
+                ->where('key', '!=', '')
+                ->whereIn('type', ManticoreMsg::INDEXABLE_TYPES)
+                ->orderBy('id')
+                ->limit($batchSize)
+                ->get();
+
+            if ($msgs->isEmpty()) {
+                break;
+            }
+
+            $num += count($msgs);
+            $progress = $count > 0 ? round($num / $count * 100, 2) : 100;
+            if ($progress < 100) {
+                $progress = number_format($progress, 2);
+            }
+            $this->info("{$num}/{$count} ({$progress}%) 正在同步消息ID {$msgs->first()->id} ~ {$msgs->last()->id} ({$total}|{$lastNum})");
+
+            $this->setLock();
+
+            $lastNum = ManticoreMsg::batchSync($msgs);
+            $total += $lastNum;
+
+            $lastId = $msgs->last()->id;
+        } while (count($msgs) == $batchSize);
+
+        $this->info("同步对话 {$dialogId} 消息结束");
+        $this->info("该对话已索引消息数量: " . \App\Module\Manticore\ManticoreBase::getDialogIndexedMsgCount($dialogId));
+    }
+}
diff --git a/app/Http/Controllers/Api/SearchController.php b/app/Http/Controllers/Api/SearchController.php
index 689171f4f..bf693d370 100644
--- a/app/Http/Controllers/Api/SearchController.php
+++ b/app/Http/Controllers/Api/SearchController.php
@@ -5,12 +5,14 @@ namespace App\Http\Controllers\Api;
 use Request;
 use App\Models\File;
 use App\Models\User;
+use App\Models\WebSocketDialogMsg;
 use App\Module\Base;
 use App\Module\Apps;
 use App\Module\Manticore\ManticoreFile;
 use App\Module\Manticore\ManticoreUser;
 use App\Module\Manticore\ManticoreProject;
 use App\Module\Manticore\ManticoreTask;
+use App\Module\Manticore\ManticoreMsg;
 
 /**
  * @apiDefine search
@@ -242,5 +244,73 @@ class SearchController extends AbstractController
 
         return Base::retSuccess('success', []);
     }
+
+    /**
+     * @api {get} api/search/message          AI 搜索消息
+     *
+     * @apiDescription 需要token身份，需要安装 Manticore Search 应用
+     * @apiVersion 1.0.0
+     * @apiGroup search
+     * @apiName message
+     *
+     * @apiParam {String} key                  搜索关键词
+     * @apiParam {String} [search_type]        搜索类型（text/vector/hybrid，默认：hybrid）
+     * @apiParam {Number} [take]               获取数量（默认：20，最大：50）
+     *
+     * @apiSuccess {Number} ret     返回状态码（1正确、0错误）
+     * @apiSuccess {String} msg     返回信息（错误描述）
+     * @apiSuccess {Object} data    返回数据
+     */
+    public function message()
+    {
+        $user = User::auth();
+
+        if (!Apps::isInstalled('manticore')) {
+            return Base::retError('Manticore Search 应用未安装');
+        }
+
+        $key = trim(Request::input('key'));
+        $searchType = Request::input('search_type', 'hybrid');
+        $take = min(50, max(1, intval(Request::input('take', 20))));
+
+        if (empty($key)) {
+            return Base::retSuccess('success', []);
+        }
+
+        $results = ManticoreMsg::search($user->userid, $key, $searchType, 0, $take);
+
+        // 补充消息完整信息
+        $msgIds = array_column($results, 'msg_id');
+        if (!empty($msgIds)) {
+            $msgs = WebSocketDialogMsg::whereIn('id', $msgIds)
+                ->with(['user' => function ($query) {
+                    $query->select(User::$basicField);
+                }])
+                ->get()
+                ->keyBy('id');
+
+            $formattedResults = [];
+            foreach ($results as $item) {
+                $msgData = $msgs->get($item['msg_id']);
+                if ($msgData) {
+                    $formattedResults[] = [
+                        'id' => $msgData->id,
+                        'msg_id' => $msgData->id,
+                        'dialog_id' => $msgData->dialog_id,
+                        'userid' => $msgData->userid,
+                        'type' => $msgData->type,
+                        'msg' => $msgData->msg,
+                        'created_at' => $msgData->created_at,
+                        'user' => $msgData->user,
+                        'relevance' => $item['relevance'] ?? 0,
+                        'content_preview' => $item['content_preview'] ?? null,
+                    ];
+                }
+            }
+            return Base::retSuccess('success', $formattedResults);
+        }
+
+        return Base::retSuccess('success', []);
+    }
 }
 
diff --git a/app/Module/Manticore/ManticoreBase.php b/app/Module/Manticore/ManticoreBase.php
index 3359c0693..bbb9a39fa 100644
--- a/app/Module/Manticore/ManticoreBase.php
+++ b/app/Module/Manticore/ManticoreBase.php
@@ -143,6 +143,21 @@ class ManticoreBase
                 ) charset_table='chinese' morphology='icu_chinese'
             ");
 
+            // 创建消息向量表（含 allowed_users MVA 权限字段）
+            $pdo->exec("
+                CREATE TABLE IF NOT EXISTS msg_vectors (
+                    id BIGINT,
+                    msg_id BIGINT,
+                    dialog_id BIGINT,
+                    userid BIGINT,
+                    msg_type STRING,
+                    content TEXT,
+                    allowed_users MULTI,
+                    created_at BIGINT,
+                    content_vector float_vector knn_type='hnsw' knn_dims='1536' hnsw_similarity='cosine'
+                ) charset_table='chinese' morphology='icu_chinese'
+            ");
+
             Log::info('Manticore tables initialized successfully');
         } catch (PDOException $e) {
             Log::warning('Manticore initialization warning: ' . $e->getMessage());
@@ -1493,5 +1508,338 @@ class ManticoreBase
         return $result ? (int) $result['cnt'] : 0;
     }
 
+    // ==============================
+    // 消息向量方法
+    // ==============================
+
+    /**
+     * 消息全文搜索（使用 MVA allowed_users 权限过滤）
+     *
+     * @param string $keyword 关键词
+     * @param int $userid 用户ID（权限过滤）
+     * @param int $limit 返回数量
+     * @param int $offset 偏移量
+     * @return array 搜索结果
+     */
+    public static function msgFullTextSearch(string $keyword, int $userid = 0, int $limit = 20, int $offset = 0): array
+    {
+        if (empty($keyword)) {
+            return [];
+        }
+
+        $instance = new self();
+        $escapedKeyword = self::escapeMatch($keyword);
+
+        if ($userid > 0) {
+            // 使用 MVA 权限过滤
+            $sql = "
+                SELECT 
+                    id,
+                    msg_id,
+                    dialog_id,
+                    userid,
+                    msg_type,
+                    content,
+                    created_at,
+                    WEIGHT() as relevance
+                FROM msg_vectors
+                WHERE MATCH('@content {$escapedKeyword}')
+                    AND allowed_users = " . (int)$userid . "
+                ORDER BY relevance DESC
+                LIMIT " . (int)$limit . " OFFSET " . (int)$offset;
+        } else {
+            $sql = "
+                SELECT 
+                    id,
+                    msg_id,
+                    dialog_id,
+                    userid,
+                    msg_type,
+                    content,
+                    created_at,
+                    WEIGHT() as relevance
+                FROM msg_vectors
+                WHERE MATCH('@content {$escapedKeyword}')
+                ORDER BY relevance DESC
+                LIMIT " . (int)$limit . " OFFSET " . (int)$offset;
+        }
+
+        return $instance->query($sql);
+    }
+
+    /**
+     * 消息向量搜索（使用 MVA allowed_users 权限过滤）
+     *
+     * @param array $queryVector 查询向量
+     * @param int $userid 用户ID（权限过滤）
+     * @param int $limit 返回数量
+     * @return array 搜索结果
+     */
+    public static function msgVectorSearch(array $queryVector, int $userid = 0, int $limit = 20): array
+    {
+        if (empty($queryVector)) {
+            return [];
+        }
+
+        $instance = new self();
+        $vectorStr = '(' . implode(',', $queryVector) . ')';
+
+        // KNN 搜索需要先获取更多结果，再在应用层过滤权限
+        $fetchLimit = $userid > 0 ? $limit * 5 : $limit;
+
+        $sql = "
+            SELECT 
+                id,
+                msg_id,
+                dialog_id,
+                userid,
+                msg_type,
+                content,
+                created_at,
+                KNN_DIST() as distance
+            FROM msg_vectors
+            WHERE KNN(content_vector, " . (int)$fetchLimit . ", {$vectorStr})
+            ORDER BY distance ASC
+        ";
+
+        $results = $instance->query($sql);
+
+        foreach ($results as &$item) {
+            $item['similarity'] = 1 - ($item['distance'] ?? 0);
+        }
+
+        // MVA 权限过滤
+        if ($userid > 0 && !empty($results)) {
+            $allowedMsgIds = $instance->query(
+                "SELECT msg_id FROM msg_vectors WHERE allowed_users = ? LIMIT 100000",
+                [$userid]
+            );
+            $allowedIds = array_column($allowedMsgIds, 'msg_id');
+
+            $results = array_filter($results, function ($item) use ($allowedIds) {
+                return in_array($item['msg_id'], $allowedIds);
+            });
+            $results = array_values($results);
+        }
+
+        return array_slice($results, 0, $limit);
+    }
+
+    /**
+     * 消息混合搜索
+     *
+     * @param string $keyword 关键词
+     * @param array $queryVector 查询向量
+     * @param int $userid 用户ID（权限过滤）
+     * @param int $limit 返回数量
+     * @return array 搜索结果
+     */
+    public static function msgHybridSearch(string $keyword, array $queryVector, int $userid = 0, int $limit = 20): array
+    {
+        $textResults = self::msgFullTextSearch($keyword, $userid, 50, 0);
+        $vectorResults = !empty($queryVector) ? self::msgVectorSearch($queryVector, $userid, 50) : [];
+
+        $scores = [];
+        $items = [];
+        $k = 60;
+
+        foreach ($textResults as $rank => $item) {
+            $id = $item['msg_id'];
+            $scores[$id] = ($scores[$id] ?? 0) + 0.5 / ($k + $rank + 1);
+            $items[$id] = $item;
+        }
+
+        foreach ($vectorResults as $rank => $item) {
+            $id = $item['msg_id'];
+            $scores[$id] = ($scores[$id] ?? 0) + 0.5 / ($k + $rank + 1);
+            if (!isset($items[$id])) {
+                $items[$id] = $item;
+            }
+        }
+
+        arsort($scores);
+
+        $results = [];
+        $count = 0;
+        foreach ($scores as $id => $score) {
+            if ($count >= $limit) break;
+            $item = $items[$id];
+            $item['rrf_score'] = $score;
+            $results[] = $item;
+            $count++;
+        }
+
+        return $results;
+    }
+
+    /**
+     * 插入或更新消息向量（含 allowed_users MVA 权限字段）
+     *
+     * @param array $data 消息数据，包含：
+     *   - msg_id: 消息ID
+     *   - dialog_id: 对话ID
+     *   - userid: 发送者ID
+     *   - msg_type: 消息类型
+     *   - content: 消息内容
+     *   - content_vector: 向量值
+     *   - allowed_users: 有权限的用户ID数组
+     *   - created_at: 创建时间戳
+     * @return bool 是否成功
+     */
+    public static function upsertMsgVector(array $data): bool
+    {
+        $instance = new self();
+
+        $msgId = $data['msg_id'] ?? 0;
+        if ($msgId <= 0) {
+            return false;
+        }
+
+        // 先删除已存在的记录
+        $instance->execute("DELETE FROM msg_vectors WHERE msg_id = ?", [$msgId]);
+
+        // 构建 allowed_users MVA 值
+        $allowedUsers = $data['allowed_users'] ?? [];
+        $allowedUsersStr = !empty($allowedUsers) ? '(' . implode(',', array_map('intval', $allowedUsers)) . ')' : '()';
+
+        // 插入新记录
+        $vectorValue = $data['content_vector'] ?? null;
+        if ($vectorValue) {
+            $vectorValue = str_replace(['[', ']'], ['(', ')'], $vectorValue);
+            $sql = "INSERT INTO msg_vectors 
+                    (id, msg_id, dialog_id, userid, msg_type, content, allowed_users, created_at, content_vector)
+                    VALUES (?, ?, ?, ?, ?, ?, {$allowedUsersStr}, ?, {$vectorValue})";
+        } else {
+            $sql = "INSERT INTO msg_vectors 
+                    (id, msg_id, dialog_id, userid, msg_type, content, allowed_users, created_at)
+                    VALUES (?, ?, ?, ?, ?, ?, {$allowedUsersStr}, ?)";
+        }
+
+        $params = [
+            $msgId,
+            $msgId,
+            $data['dialog_id'] ?? 0,
+            $data['userid'] ?? 0,
+            $data['msg_type'] ?? 'text',
+            $data['content'] ?? '',
+            $data['created_at'] ?? time()
+        ];
+
+        return $instance->execute($sql, $params);
+    }
+
+    /**
+     * 更新对话的 allowed_users 权限列表（批量更新该对话下所有消息）
+     *
+     * @param int $dialogId 对话ID
+     * @param array $userids 有权限的用户ID数组
+     * @return int 更新的消息数量
+     */
+    public static function updateDialogAllowedUsers(int $dialogId, array $userids): int
+    {
+        if ($dialogId <= 0) {
+            return 0;
+        }
+
+        $instance = new self();
+        $allowedUsersStr = !empty($userids) ? '(' . implode(',', array_map('intval', $userids)) . ')' : '()';
+
+        // Manticore 支持按条件批量更新
+        return $instance->executeWithRowCount(
+            "UPDATE msg_vectors SET allowed_users = {$allowedUsersStr} WHERE dialog_id = ?",
+            [$dialogId]
+        );
+    }
+
+    /**
+     * 删除消息向量
+     *
+     * @param int $msgId 消息ID
+     * @return bool 是否成功
+     */
+    public static function deleteMsgVector(int $msgId): bool
+    {
+        if ($msgId <= 0) {
+            return false;
+        }
+
+        $instance = new self();
+        return $instance->execute("DELETE FROM msg_vectors WHERE msg_id = ?", [$msgId]);
+    }
+
+    /**
+     * 批量删除对话下的所有消息向量
+     *
+     * @param int $dialogId 对话ID
+     * @return int 删除数量
+     */
+    public static function deleteDialogMsgVectors(int $dialogId): int
+    {
+        if ($dialogId <= 0) {
+            return 0;
+        }
+
+        $instance = new self();
+        return $instance->executeWithRowCount(
+            "DELETE FROM msg_vectors WHERE dialog_id = ?",
+            [$dialogId]
+        );
+    }
+
+    /**
+     * 清空所有消息向量
+     *
+     * @return bool 是否成功
+     */
+    public static function clearAllMsgVectors(): bool
+    {
+        $instance = new self();
+        return $instance->execute("TRUNCATE TABLE msg_vectors");
+    }
+
+    /**
+     * 获取已索引的消息数量
+     *
+     * @return int 消息数量
+     */
+    public static function getIndexedMsgCount(): int
+    {
+        $instance = new self();
+        $result = $instance->queryOne("SELECT COUNT(*) as cnt FROM msg_vectors");
+        return $result ? (int) $result['cnt'] : 0;
+    }
+
+    /**
+     * 获取对话的已索引消息数量
+     *
+     * @param int $dialogId 对话ID
+     * @return int 消息数量
+     */
+    public static function getDialogIndexedMsgCount(int $dialogId): int
+    {
+        if ($dialogId <= 0) {
+            return 0;
+        }
+
+        $instance = new self();
+        $result = $instance->queryOne(
+            "SELECT COUNT(*) as cnt FROM msg_vectors WHERE dialog_id = ?",
+            [$dialogId]
+        );
+        return $result ? (int) $result['cnt'] : 0;
+    }
+
+    /**
+     * 获取最后索引的消息ID
+     *
+     * @return int 消息ID
+     */
+    public static function getLastIndexedMsgId(): int
+    {
+        $instance = new self();
+        $result = $instance->queryOne("SELECT MAX(msg_id) as max_id FROM msg_vectors");
+        return $result ? (int) ($result['max_id'] ?? 0) : 0;
+    }
+
 }
 
diff --git a/app/Module/Manticore/ManticoreMsg.php b/app/Module/Manticore/ManticoreMsg.php
new file mode 100644
index 000000000..e7c9ecbe5
--- /dev/null
+++ b/app/Module/Manticore/ManticoreMsg.php
@@ -0,0 +1,360 @@
+<?php
+
+namespace App\Module\Manticore;
+
+use App\Models\WebSocketDialogMsg;
+use App\Models\WebSocketDialogUser;
+use App\Module\Apps;
+use App\Module\Base;
+use App\Module\AI;
+use Illuminate\Support\Facades\Log;
+
+/**
+ * Manticore Search 消息搜索类（MVA 权限方案）
+ *
+ * 使用方法:
+ *
+ * 1. 搜索方法
+ *    - 搜索消息: search($userid, $keyword, $searchType, $from, $size);
+ *
+ * 2. 同步方法
+ *    - 单个同步: sync(WebSocketDialogMsg $msg);
+ *    - 批量同步: batchSync($msgs);
+ *    - 删除索引: delete($msgId);
+ *
+ * 3. 权限更新方法
+ *    - 更新对话权限: updateDialogAllowedUsers($dialogId);
+ *
+ * 4. 工具方法
+ *    - 清空索引: clear();
+ *    - 判断是否索引: shouldIndex($msg);
+ */
+class ManticoreMsg
+{
+    /**
+     * 可索引的消息类型
+     */
+    public const INDEXABLE_TYPES = ['text', 'file', 'record', 'meeting', 'vote'];
+
+    /**
+     * 最大内容长度（字符）
+     */
+    public const MAX_CONTENT_LENGTH = 50000; // 50K 字符
+
+    /**
+     * 判断消息是否应该被索引
+     *
+     * @param WebSocketDialogMsg $msg 消息模型
+     * @return bool 是否应该索引
+     */
+    public static function shouldIndex(WebSocketDialogMsg $msg): bool
+    {
+        // 1. 排除机器人消息
+        if ($msg->bot === 1) {
+            return false;
+        }
+
+        // 2. 检查消息类型
+        if (!in_array($msg->type, self::INDEXABLE_TYPES)) {
+            return false;
+        }
+
+        // 3. 排除 key 为空的消息
+        if (empty($msg->key)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * 搜索消息（支持全文、向量、混合搜索）
+     *
+     * @param int $userid 用户ID
+     * @param string $keyword 搜索关键词
+     * @param string $searchType 搜索类型: text/vector/hybrid
+     * @param int $from 起始位置
+     * @param int $size 返回数量
+     * @return array 搜索结果
+     */
+    public static function search(int $userid, string $keyword, string $searchType = 'hybrid', int $from = 0, int $size = 20): array
+    {
+        if (empty($keyword)) {
+            return [];
+        }
+
+        if (!Apps::isInstalled("manticore")) {
+            return [];
+        }
+
+        try {
+            switch ($searchType) {
+                case 'text':
+                    // 纯全文搜索
+                    return self::formatSearchResults(
+                        ManticoreBase::msgFullTextSearch($keyword, $userid, $size, $from)
+                    );
+
+                case 'vector':
+                    // 纯向量搜索（需要先获取 embedding）
+                    $embedding = self::getEmbedding($keyword);
+                    if (empty($embedding)) {
+                        // embedding 获取失败，降级到全文搜索
+                        return self::formatSearchResults(
+                            ManticoreBase::msgFullTextSearch($keyword, $userid, $size, $from)
+                        );
+                    }
+                    return self::formatSearchResults(
+                        ManticoreBase::msgVectorSearch($embedding, $userid, $size)
+                    );
+
+                case 'hybrid':
+                default:
+                    // 混合搜索
+                    $embedding = self::getEmbedding($keyword);
+                    return self::formatSearchResults(
+                        ManticoreBase::msgHybridSearch($keyword, $embedding, $userid, $size)
+                    );
+            }
+        } catch (\Exception $e) {
+            Log::error('Manticore msg search error: ' . $e->getMessage());
+            return [];
+        }
+    }
+
+    /**
+     * 获取文本的 Embedding 向量
+     *
+     * @param string $text 文本
+     * @return array 向量数组（空数组表示失败）
+     */
+    private static function getEmbedding(string $text): array
+    {
+        if (empty($text)) {
+            return [];
+        }
+
+        try {
+            // 调用 AI 模块获取 embedding
+            $result = AI::getEmbedding($text);
+            if (Base::isSuccess($result)) {
+                return $result['data'] ?? [];
+            }
+        } catch (\Exception $e) {
+            Log::warning('Get embedding error: ' . $e->getMessage());
+        }
+
+        return [];
+    }
+
+    /**
+     * 格式化搜索结果
+     *
+     * @param array $results Manticore 返回的结果
+     * @return array 格式化后的结果
+     */
+    private static function formatSearchResults(array $results): array
+    {
+        $formatted = [];
+        foreach ($results as $item) {
+            $formatted[] = [
+                'id' => $item['msg_id'],
+                'msg_id' => $item['msg_id'],
+                'dialog_id' => $item['dialog_id'],
+                'userid' => $item['userid'],
+                'msg_type' => $item['msg_type'],
+                'content_preview' => isset($item['content']) ? mb_substr($item['content'], 0, 200) : null,
+                'created_at' => $item['created_at'] ?? null,
+                'relevance' => $item['relevance'] ?? $item['similarity'] ?? $item['rrf_score'] ?? 0,
+            ];
+        }
+        return $formatted;
+    }
+
+    // ==============================
+    // 权限计算方法（MVA 方案核心）
+    // ==============================
+
+    /**
+     * 获取消息的 allowed_users 列表
+     * 
+     * 对话的所有成员都有权限查看该对话的消息
+     *
+     * @param WebSocketDialogMsg $msg 消息模型
+     * @return array 有权限的用户ID数组
+     */
+    public static function getAllowedUsers(WebSocketDialogMsg $msg): array
+    {
+        return self::getDialogUserIds($msg->dialog_id);
+    }
+
+    /**
+     * 获取对话的所有成员ID
+     *
+     * @param int $dialogId 对话ID
+     * @return array 成员用户ID数组
+     */
+    public static function getDialogUserIds(int $dialogId): array
+    {
+        if ($dialogId <= 0) {
+            return [];
+        }
+
+        return WebSocketDialogUser::where('dialog_id', $dialogId)
+            ->pluck('userid')
+            ->toArray();
+    }
+
+    // ==============================
+    // 同步方法
+    // ==============================
+
+    /**
+     * 同步单个消息到 Manticore（含 allowed_users）
+     *
+     * @param WebSocketDialogMsg $msg 消息模型
+     * @return bool 是否成功
+     */
+    public static function sync(WebSocketDialogMsg $msg): bool
+    {
+        if (!Apps::isInstalled("manticore")) {
+            return false;
+        }
+
+        // 检查是否应该索引
+        if (!self::shouldIndex($msg)) {
+            // 不符合索引条件，尝试删除已存在的索引
+            return ManticoreBase::deleteMsgVector($msg->id);
+        }
+
+        try {
+            // 提取消息内容（使用 key 字段）
+            $content = $msg->key ?? '';
+
+            // 限制内容长度
+            $content = mb_substr($content, 0, self::MAX_CONTENT_LENGTH);
+
+            // 获取 embedding（如果有内容且 AI 可用）
+            $embedding = null;
+            if (!empty($content) && Apps::isInstalled('ai')) {
+                $embeddingResult = self::getEmbedding($content);
+                if (!empty($embeddingResult)) {
+                    $embedding = '[' . implode(',', $embeddingResult) . ']';
+                }
+            }
+
+            // 获取消息的 allowed_users
+            $allowedUsers = self::getAllowedUsers($msg);
+
+            // 写入 Manticore（含 allowed_users）
+            $result = ManticoreBase::upsertMsgVector([
+                'msg_id' => $msg->id,
+                'dialog_id' => $msg->dialog_id,
+                'userid' => $msg->userid,
+                'msg_type' => $msg->type,
+                'content' => $content,
+                'content_vector' => $embedding,
+                'allowed_users' => $allowedUsers,
+                'created_at' => $msg->created_at ? $msg->created_at->timestamp : time(),
+            ]);
+
+            return $result;
+        } catch (\Exception $e) {
+            Log::error('Manticore msg sync error: ' . $e->getMessage(), [
+                'msg_id' => $msg->id,
+                'dialog_id' => $msg->dialog_id,
+            ]);
+            return false;
+        }
+    }
+
+    /**
+     * 批量同步消息
+     *
+     * @param iterable $msgs 消息列表
+     * @return int 成功同步的数量
+     */
+    public static function batchSync(iterable $msgs): int
+    {
+        if (!Apps::isInstalled("manticore")) {
+            return 0;
+        }
+
+        $count = 0;
+        foreach ($msgs as $msg) {
+            if (self::sync($msg)) {
+                $count++;
+            }
+        }
+        return $count;
+    }
+
+    /**
+     * 删除消息索引
+     *
+     * @param int $msgId 消息ID
+     * @return bool 是否成功
+     */
+    public static function delete(int $msgId): bool
+    {
+        if (!Apps::isInstalled("manticore")) {
+            return false;
+        }
+
+        return ManticoreBase::deleteMsgVector($msgId);
+    }
+
+    /**
+     * 清空所有索引
+     *
+     * @return bool 是否成功
+     */
+    public static function clear(): bool
+    {
+        if (!Apps::isInstalled("manticore")) {
+            return false;
+        }
+
+        return ManticoreBase::clearAllMsgVectors();
+    }
+
+    /**
+     * 获取已索引消息数量
+     *
+     * @return int 数量
+     */
+    public static function getIndexedCount(): int
+    {
+        if (!Apps::isInstalled("manticore")) {
+            return 0;
+        }
+
+        return ManticoreBase::getIndexedMsgCount();
+    }
+
+    // ==============================
+    // 权限更新方法（MVA 方案）
+    // ==============================
+
+    /**
+     * 更新对话下所有消息的 allowed_users 权限列表
+     * 从 MySQL 获取最新的对话成员并更新到 Manticore
+     *
+     * @param int $dialogId 对话ID
+     * @return int 更新的消息数量
+     */
+    public static function updateDialogAllowedUsers(int $dialogId): int
+    {
+        if (!Apps::isInstalled("manticore") || $dialogId <= 0) {
+            return 0;
+        }
+
+        try {
+            $userids = self::getDialogUserIds($dialogId);
+            return ManticoreBase::updateDialogAllowedUsers($dialogId, $userids);
+        } catch (\Exception $e) {
+            Log::error('Manticore updateDialogAllowedUsers error: ' . $e->getMessage(), ['dialog_id' => $dialogId]);
+            return 0;
+        }
+    }
+}
diff --git a/app/Observers/WebSocketDialogMsgObserver.php b/app/Observers/WebSocketDialogMsgObserver.php
index 7d220ff24..244fd27e6 100644
--- a/app/Observers/WebSocketDialogMsgObserver.php
+++ b/app/Observers/WebSocketDialogMsgObserver.php
@@ -3,6 +3,9 @@
 namespace App\Observers;
 
 use App\Models\WebSocketDialogMsg;
+use App\Module\Apps;
+use App\Module\Manticore\ManticoreMsg;
+use App\Tasks\ManticoreSyncTask;
 use App\Tasks\ZincSearchSyncTask;
 
 class WebSocketDialogMsgObserver extends AbstractObserver
@@ -15,7 +18,13 @@ class WebSocketDialogMsgObserver extends AbstractObserver
      */
     public function created(WebSocketDialogMsg $webSocketDialogMsg)
     {
+        // ZincSearch 同步
         self::taskDeliver(new ZincSearchSyncTask('sync', $webSocketDialogMsg->toArray()));
+
+        // Manticore 同步（仅在安装 Manticore 且符合索引条件时）
+        if (Apps::isInstalled('manticore') && ManticoreMsg::shouldIndex($webSocketDialogMsg)) {
+            self::taskDeliver(new ManticoreSyncTask('msg_sync', ['msg_id' => $webSocketDialogMsg->id]));
+        }
     }
 
     /**
@@ -26,7 +35,13 @@ class WebSocketDialogMsgObserver extends AbstractObserver
      */
     public function updated(WebSocketDialogMsg $webSocketDialogMsg)
     {
+        // ZincSearch 同步
         self::taskDeliver(new ZincSearchSyncTask('sync', $webSocketDialogMsg->toArray()));
+
+        // Manticore 同步（更新可能使消息符合或不再符合索引条件，由 sync 方法处理）
+        if (Apps::isInstalled('manticore')) {
+            self::taskDeliver(new ManticoreSyncTask('msg_sync', ['msg_id' => $webSocketDialogMsg->id]));
+        }
     }
 
     /**
@@ -37,7 +52,13 @@ class WebSocketDialogMsgObserver extends AbstractObserver
      */
     public function deleted(WebSocketDialogMsg $webSocketDialogMsg)
     {
+        // ZincSearch 删除
         self::taskDeliver(new ZincSearchSyncTask('delete', $webSocketDialogMsg->toArray()));
+
+        // Manticore 删除
+        if (Apps::isInstalled('manticore')) {
+            self::taskDeliver(new ManticoreSyncTask('msg_delete', ['msg_id' => $webSocketDialogMsg->id]));
+        }
     }
 
     /**
diff --git a/app/Observers/WebSocketDialogUserObserver.php b/app/Observers/WebSocketDialogUserObserver.php
index 743b2b70c..7ed29705d 100644
--- a/app/Observers/WebSocketDialogUserObserver.php
+++ b/app/Observers/WebSocketDialogUserObserver.php
@@ -5,6 +5,8 @@ namespace App\Observers;
 use App\Models\Deleted;
 use App\Models\UserBot;
 use App\Models\WebSocketDialogUser;
+use App\Module\Apps;
+use App\Tasks\ManticoreSyncTask;
 use App\Tasks\ZincSearchSyncTask;
 use Carbon\Carbon;
 
@@ -32,6 +34,14 @@ class WebSocketDialogUserObserver extends AbstractObserver
         }
         Deleted::forget('dialog', $webSocketDialogUser->dialog_id, $webSocketDialogUser->userid);
         self::taskDeliver(new ZincSearchSyncTask('userSync', $webSocketDialogUser->toArray()));
+
+        // Manticore: 更新对话下所有消息的 allowed_users
+        if (Apps::isInstalled('manticore')) {
+            self::taskDeliver(new ManticoreSyncTask('update_dialog_allowed_users', [
+                'dialog_id' => $webSocketDialogUser->dialog_id
+            ]));
+        }
+
         //
         $dialog = $webSocketDialogUser->webSocketDialog;
         if ($dialog) {
@@ -60,6 +70,14 @@ class WebSocketDialogUserObserver extends AbstractObserver
     {
         Deleted::record('dialog', $webSocketDialogUser->dialog_id, $webSocketDialogUser->userid);
         self::taskDeliver(new ZincSearchSyncTask('deleteUser', $webSocketDialogUser->toArray()));
+
+        // Manticore: 更新对话下所有消息的 allowed_users
+        if (Apps::isInstalled('manticore')) {
+            self::taskDeliver(new ManticoreSyncTask('update_dialog_allowed_users', [
+                'dialog_id' => $webSocketDialogUser->dialog_id
+            ]));
+        }
+
         //
         $dialog = $webSocketDialogUser->webSocketDialog;
         if ($dialog) {
diff --git a/app/Tasks/ManticoreSyncTask.php b/app/Tasks/ManticoreSyncTask.php
index 8c1bd3eab..21dc5d2f2 100644
--- a/app/Tasks/ManticoreSyncTask.php
+++ b/app/Tasks/ManticoreSyncTask.php
@@ -6,12 +6,14 @@ use App\Models\File;
 use App\Models\User;
 use App\Models\Project;
 use App\Models\ProjectTask;
+use App\Models\WebSocketDialogMsg;
 use App\Module\Apps;
 use App\Module\Manticore\ManticoreBase;
 use App\Module\Manticore\ManticoreFile;
 use App\Module\Manticore\ManticoreUser;
 use App\Module\Manticore\ManticoreProject;
 use App\Module\Manticore\ManticoreTask;
+use App\Module\Manticore\ManticoreMsg;
 use Carbon\Carbon;
 use Illuminate\Support\Facades\Cache;
 
@@ -152,6 +154,31 @@ class ManticoreSyncTask extends AbstractTask
                 }
                 break;
 
+            // ==============================
+            // 消息同步动作
+            // ==============================
+            case 'msg_sync':
+                $msg = WebSocketDialogMsg::find($this->data['msg_id'] ?? 0);
+                if ($msg) {
+                    ManticoreMsg::sync($msg);
+                }
+                break;
+
+            case 'msg_delete':
+                $msgId = $this->data['msg_id'] ?? 0;
+                if ($msgId > 0) {
+                    ManticoreMsg::delete($msgId);
+                }
+                break;
+
+            case 'update_dialog_allowed_users':
+                // 更新对话下所有消息的 allowed_users（成员变更时调用）
+                $dialogId = $this->data['dialog_id'] ?? 0;
+                if ($dialogId > 0) {
+                    ManticoreMsg::updateDialogAllowedUsers($dialogId);
+                }
+                break;
+
             default:
                 // 增量更新（定时任务调用）
                 $this->incrementalUpdate();
@@ -181,6 +208,7 @@ class ManticoreSyncTask extends AbstractTask
         @shell_exec("php /var/www/artisan manticore:sync-users --i 2>&1 &");
         @shell_exec("php /var/www/artisan manticore:sync-projects --i 2>&1 &");
         @shell_exec("php /var/www/artisan manticore:sync-tasks --i 2>&1 &");
+        @shell_exec("php /var/www/artisan manticore:sync-msgs --i 2>&1 &");
 
         // 执行完成
         Cache::put("ManticoreSyncTask:Time", time(), Carbon::now()->addMinutes(5));