diff --git a/src/app.module.ts b/src/app.module.ts
index 800cea5..6b7c42f 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -26,7 +26,7 @@ import { AdminEventsModule } from './modules/admin-events/admin-events.module';
 import { AdminKnowledgeModule } from './modules/admin-knowledge/admin-knowledge.module';
 import { AdminCostsModule } from './modules/admin-costs/admin-costs.module';
 import { AdminBillingModule } from './modules/admin-billing/admin-billing.module';
-import { AdminLearningModule } from './modules/admin-learning/admin-learning.module';
+
 import { AdminServersModule } from './modules/admin-servers/admin-servers.module';
 import { AdminConversationModule } from './modules/admin-conversation/admin-conversation.module';
 import { AdminAiChatModule } from './modules/admin-ai-chat/admin-ai-chat.module';
@@ -139,7 +139,6 @@ import appleConfig from './config/apple.config';
     AdminCostsModule,
     AdminBillingModule,
     AdminServersModule,
-    AdminLearningModule,
     AdminConversationModule,
     AdminAiChatModule,
     AdminAuditLogModule,
diff --git a/src/common/guards/jwt-auth.guard.ts b/src/common/guards/jwt-auth.guard.ts
index 3255bdd..65dae14 100644
--- a/src/common/guards/jwt-auth.guard.ts
+++ b/src/common/guards/jwt-auth.guard.ts
@@ -33,7 +33,7 @@ export class JwtAuthGuard implements CanActivate {
     const request = context.switchToHttp().getRequest<Request>();
 
     // Admin and internal routes use their own auth guards
-    if (request.path.startsWith('/api/admin') || request.path.startsWith('/admin-api') || request.path.startsWith('/internal')) {
+    if (request.path.startsWith('/admin-api') || request.path.startsWith('/internal')) {
       return true;
     }
 
diff --git a/src/modules/admin-learning/admin-learning.controller.ts b/src/modules/admin-learning/admin-learning.controller.ts
deleted file mode 100644
index d1b78c1..0000000
--- a/src/modules/admin-learning/admin-learning.controller.ts
+++ /dev/null
@@ -1,86 +0,0 @@
-import { Controller, Get, Post, Param, Query, Body, UseGuards } from '@nestjs/common';
-import { AdminAuthGuard } from '../../common/guards/admin-auth.guard';
-import { AdminLearningService } from './admin-learning.service';
-import { EventFilterQuery, SessionFilterQuery, ProgressFilterQuery, RecordFilterQuery, PaginationQuery, BatchReprocessDto, RecalculateDto } from './dto/admin-learning.dto';
-
-@Controller('admin/learning')
-@UseGuards(AdminAuthGuard)
-export class AdminLearningController {
-  constructor(private readonly service: AdminLearningService) {}
-
-  // ── Dashboard ──
-  @Get('dashboard')
-  async getDashboard(
-    @Query('knowledgeBaseId') knowledgeBaseId?: string,
-    @Query('startDate') startDate?: string,
-    @Query('endDate') endDate?: string,
-  ) { return this.service.getDashboard({ knowledgeBaseId, startDate, endDate }); }
-
-  // ── Knowledge Bases ──
-  @Get('knowledge-bases')
-  async getKnowledgeBases() { return this.service.getKnowledgeBases(); }
-
-  // ── ReadingEvents ──
-  @Get('reading-events')
-  async getReadingEvents(@Query() query: EventFilterQuery) { return this.service.getReadingEvents(query); }
-  @Get('reading-events/failed')
-  async getFailedEvents(@Query() query: PaginationQuery) { return this.service.getFailedEvents(query); }
-  @Get('reading-events/:id')
-  async getReadingEvent(@Param('id') id: string) { return this.service.getReadingEvent(id); }
-  @Post('reading-events/:id/reprocess')
-  async reprocessEvent(@Param('id') id: string) { return this.service.reprocessEvent(id); }
-  @Post('reading-events/reprocess-batch')
-  async batchReprocess(@Body() dto: BatchReprocessDto) { return this.service.batchReprocess(dto.eventIds); }
-
-  // ── Sessions ──
-  @Get('sessions')
-  async getSessions(@Query() query: SessionFilterQuery) { return this.service.getSessions(query); }
-  @Get('sessions/interrupted')
-  async getInterruptedSessions(@Query() query: PaginationQuery) { return this.service.getInterruptedSessions(query); }
-  @Get('sessions/:id')
-  async getSession(@Param('id') id: string) { return this.service.getSession(id); }
-
-  // ── Progress ──
-  @Get('progress')
-  async getProgress(@Query() query: ProgressFilterQuery) { return this.service.getProgress(query); }
-  @Get('progress/:id')
-  async getProgressDetail(@Param('id') id: string) { return this.service.getProgressDetail(id); }
-
-  // ── DailyActivities ──
-  @Get('daily-activities')
-  async getDailyActivities(@Query() query: PaginationQuery & { userId?: string; startDate?: string; endDate?: string }) { return this.service.getDailyActivities(query); }
-
-  // ── Records ──
-  @Get('records')
-  async getRecords(@Query() query: RecordFilterQuery) { return this.service.getRecords(query); }
-  @Get('records/:id')
-  async getRecord(@Param('id') id: string) { return this.service.getRecord(id); }
-
-  // ── Timeline ──
-  @Get('user-timeline')
-  async getUserTimeline(@Query('userId') userId: string, @Query('limit') limit?: string) {
-    return this.service.getUserTimeline(userId, limit ? parseInt(limit) : undefined);
-  }
-
-  // ── Diagnose ──
-  @Get('user-diagnose')
-  async diagnoseUser(@Query('userId') userId: string) { return this.service.diagnoseUser(userId); }
-  @Get('material-diagnose')
-  async diagnoseMaterial(@Query('materialId') materialId: string) { return this.service.diagnoseMaterial(materialId); }
-
-  // ── Anomalies ──
-  @Get('anomalies')
-  async getAnomalies(@Query() query: PaginationQuery) { return this.service.getAnomalies(query); }
-
-  // ── Temporary Materials ──
-  @Get('temporary-materials')
-  async getTemporaryMaterials(@Query() query: PaginationQuery) { return this.service.getTemporaryMaterials(query); }
-
-  // ── Operations ──
-  @Post('recalculate')
-  async recalculateLearningData(@Body() dto: RecalculateDto) { return this.service.recalculateLearningData(dto.userId); }
-  @Get('export')
-  async export(@Query('startDate') startDate?: string, @Query('endDate') endDate?: string, @Query('type') type?: string) {
-    return this.service.export({ startDate, endDate, type });
-  }
-}
diff --git a/src/modules/admin-learning/admin-learning.module.ts b/src/modules/admin-learning/admin-learning.module.ts
deleted file mode 100644
index f6901b3..0000000
--- a/src/modules/admin-learning/admin-learning.module.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { Module } from '@nestjs/common';
-import { PrismaModule } from '../../infrastructure/database/prisma.module';
-import { AiRuntimeModule } from '../ai-runtime/ai-runtime.module';
-import { AdminLearningController } from './admin-learning.controller';
-import { AdminLearningService } from './admin-learning.service';
-
-@Module({
-  imports: [PrismaModule, AiRuntimeModule],
-  controllers: [AdminLearningController],
-  providers: [AdminLearningService],
-})
-export class AdminLearningModule {}
diff --git a/src/modules/learning-session/admin-learning.controller.ts b/src/modules/learning-session/admin-learning.controller.ts
index 6f9cd58..c22b8fc 100644
--- a/src/modules/learning-session/admin-learning.controller.ts
+++ b/src/modules/learning-session/admin-learning.controller.ts
@@ -1,100 +1,95 @@
-import { Controller, Get, Query, UseGuards } from '@nestjs/common';
-import { ApiTags, ApiBearerAuth, ApiOperation, ApiQuery } from '@nestjs/swagger';
-import { PrismaService } from '../../infrastructure/database/prisma.service';
+import { Controller, Get, Post, Param, Query, Body, UseGuards } from '@nestjs/common';
 import { AdminAuthGuard } from '../../common/guards/admin-auth.guard';
 import { AdminRolesGuard } from '../../common/guards/admin-roles.guard';
+import { AdminLearningService } from './admin-learning.service';
+import { EventFilterQuery, SessionFilterQuery, ProgressFilterQuery, RecordFilterQuery, PaginationQuery, BatchReprocessDto, RecalculateDto } from './dto/admin-learning.dto';
 
-@ApiTags('admin-learning')
-@ApiBearerAuth()
 @Controller('admin-api/learning')
 @UseGuards(AdminAuthGuard, AdminRolesGuard)
 export class AdminLearningController {
-  constructor(private readonly prisma: PrismaService) {}
+  constructor(private readonly service: AdminLearningService) {}
 
+  // ── Dashboard ──
+  @Get('dashboard')
+  async getDashboard(
+    @Query('knowledgeBaseId') knowledgeBaseId?: string,
+    @Query('startDate') startDate?: string,
+    @Query('endDate') endDate?: string,
+  ) { return this.service.getDashboard({ knowledgeBaseId, startDate, endDate }); }
+
+  // ── Knowledge Bases ──
+  @Get('knowledge-bases')
+  async getKnowledgeBases() { return this.service.getKnowledgeBases(); }
+
+  // ── ReadingEvents ──
+  @Get('reading-events')
+  async getReadingEvents(@Query() query: EventFilterQuery) { return this.service.getReadingEvents(query); }
+  @Get('reading-events/:id')
+  async getReadingEvent(@Param('id') id: string) { return this.service.getReadingEvent(id); }
+  @Post('reading-events/:id/reprocess')
+  async reprocessEvent(@Param('id') id: string) { return this.service.reprocessEvent(id); }
+  @Post('reading-events/reprocess-batch')
+  async batchReprocess(@Body() dto: BatchReprocessDto) { return this.service.batchReprocess(dto.eventIds); }
+
+  // ── Sessions ──
   @Get('sessions')
-  @ApiOperation({ summary: '学习会话列表' })
-  @ApiQuery({ name: 'userId', required: false })
-  @ApiQuery({ name: 'page', required: false })
-  @ApiQuery({ name: 'limit', required: false })
-  async listSessions(
-    @Query('userId') userId?: string,
-    @Query('page') page?: string,
-    @Query('limit') limit?: string,
-  ) {
-    const take = Math.min(Number(limit) || 20, 100);
-    const skip = (Math.max(Number(page) || 1, 1) - 1) * take;
-    const where: any = {};
-    if (userId) where.userId = userId;
+  async getSessions(@Query() query: SessionFilterQuery) { return this.service.getSessions(query); }
+  @Get('sessions/:id')
+  async getSession(@Param('id') id: string) { return this.service.getSession(id); }
 
-    const [items, total] = await Promise.all([
-      this.prisma.learningSession.findMany({
-        where,
-        orderBy: { startedAt: 'desc' },
-        take,
-        skip,
-        select: { id: true, userId: true, knowledgeBaseId: true, knowledgeItemId: true, mode: true, status: true, startedAt: true, endedAt: true, durationSeconds: true, focusMinutes: true },
-      }),
-      this.prisma.learningSession.count({ where }),
-    ]);
-    return { items, total };
-  }
+  // ── Progress ──
+  @Get('progress')
+  async getProgress(@Query() query: ProgressFilterQuery) { return this.service.getProgress(query); }
+  @Get('progress/:id')
+  async getProgressDetail(@Param('id') id: string) { return this.service.getProgressDetail(id); }
 
+  // ── DailyActivities ──
+  @Get('daily-activities')
+  async getDailyActivities(@Query() query: PaginationQuery & { userId?: string; startDate?: string; endDate?: string }) { return this.service.getDailyActivities(query); }
+
+  // ── Records ──
+  @Get('records')
+  async getRecords(@Query() query: RecordFilterQuery) { return this.service.getRecords(query); }
+  @Get('records/:id')
+  async getRecord(@Param('id') id: string) { return this.service.getRecord(id); }
+
+  // ── AI Analysis ──
   @Get('analysis')
-  @ApiOperation({ summary: 'AI 分析结果列表' })
-  @ApiQuery({ name: 'userId', required: false })
-  @ApiQuery({ name: 'page', required: false })
-  @ApiQuery({ name: 'limit', required: false })
-  async listAnalysis(
-    @Query('userId') userId?: string,
-    @Query('page') page?: string,
-    @Query('limit') limit?: string,
-  ) {
-    const take = Math.min(Number(limit) || 20, 100);
-    const skip = (Math.max(Number(page) || 1, 1) - 1) * take;
-    const where: any = {};
-    if (userId) where.userId = userId;
-
-    const [items, total] = await Promise.all([
-      this.prisma.aiAnalysisResult.findMany({
-        where,
-        orderBy: { createdAt: 'desc' },
-        take,
-        skip,
-        select: { id: true, userId: true, jobId: true, summary: true, masteryScore: true, weaknesses: true, strengths: true, createdAt: true },
-      }),
-      this.prisma.aiAnalysisResult.count({ where }),
-    ]);
-    return { items, total };
+  async getAnalysis(@Query('userId') userId?: string, @Query('page') page?: string, @Query('limit') limit?: string) {
+    return this.service.getAnalysis({ userId, page: page ? parseInt(page) : undefined, limit: limit ? parseInt(limit) : undefined });
   }
 
+  // ── AI Usage ──
   @Get('ai-usage')
-  @ApiOperation({ summary: 'AI 调用日志' })
-  @ApiQuery({ name: 'userId', required: false })
-  @ApiQuery({ name: 'model', required: false })
-  @ApiQuery({ name: 'page', required: false })
-  @ApiQuery({ name: 'limit', required: false })
-  async listAiUsage(
-    @Query('userId') userId?: string,
-    @Query('model') model?: string,
-    @Query('page') page?: string,
-    @Query('limit') limit?: string,
-  ) {
-    const take = Math.min(Number(limit) || 20, 100);
-    const skip = (Math.max(Number(page) || 1, 1) - 1) * take;
-    const where: any = {};
-    if (userId) where.userId = userId;
-    if (model) where.model = { contains: model };
+  async getAiUsage(@Query('userId') userId?: string, @Query('model') model?: string, @Query('page') page?: string, @Query('limit') limit?: string) {
+    return this.service.getAiUsage({ userId, model, page: page ? parseInt(page) : undefined, limit: limit ? parseInt(limit) : undefined });
+  }
 
-    const [items, total] = await Promise.all([
-      this.prisma.aiUsageLog.findMany({
-        where,
-        orderBy: { createdAt: 'desc' },
-        take,
-        skip,
-        select: { id: true, userId: true, model: true, provider: true, inputTokens: true, outputTokens: true, estimatedCost: true, success: true, createdAt: true },
-      }),
-      this.prisma.aiUsageLog.count({ where }),
-    ]);
-    return { items, total };
+  // ── Timeline ──
+  @Get('user-timeline')
+  async getUserTimeline(@Query('userId') userId: string, @Query('limit') limit?: string) {
+    return this.service.getUserTimeline(userId, limit ? parseInt(limit) : undefined);
+  }
+
+  // ── Diagnose ──
+  @Get('user-diagnose')
+  async diagnoseUser(@Query('userId') userId: string) { return this.service.diagnoseUser(userId); }
+  @Get('material-diagnose')
+  async diagnoseMaterial(@Query('materialId') materialId: string) { return this.service.diagnoseMaterial(materialId); }
+
+  // ── Anomalies ──
+  @Get('anomalies')
+  async getAnomalies(@Query() query: PaginationQuery) { return this.service.getAnomalies(query); }
+
+  // ── Temporary Materials ──
+  @Get('temporary-materials')
+  async getTemporaryMaterials(@Query() query: PaginationQuery) { return this.service.getTemporaryMaterials(query); }
+
+  // ── Operations ──
+  @Post('recalculate')
+  async recalculateLearningData(@Body() dto: RecalculateDto) { return this.service.recalculateLearningData(dto.userId); }
+  @Get('export')
+  async export(@Query('startDate') startDate?: string, @Query('endDate') endDate?: string, @Query('type') type?: string) {
+    return this.service.export({ startDate, endDate, type });
   }
 }
diff --git a/src/modules/admin-learning/admin-learning.service.ts b/src/modules/learning-session/admin-learning.service.ts
similarity index 90%
rename from src/modules/admin-learning/admin-learning.service.ts
rename to src/modules/learning-session/admin-learning.service.ts
index 7300d35..d39e316 100644
--- a/src/modules/admin-learning/admin-learning.service.ts
+++ b/src/modules/learning-session/admin-learning.service.ts
@@ -12,7 +12,6 @@ export class AdminLearningService {
   // ══ Knowledge Bases (for filter dropdown) ══
 
   async getKnowledgeBases() {
-    // Return knowledge bases that appear in reading_events, with real names from KB table
     const ids = await this.prisma.readingEvent.findMany({
       where: { knowledgeBaseId: { not: null } },
       select: { knowledgeBaseId: true },
@@ -37,7 +36,6 @@ export class AdminLearningService {
     const now = new Date();
     const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
 
-    // Base where clause for knowledgeBaseId filtering
     const eventWhere: any = {};
     const sessionWhere: any = {};
     const progressWhere: any = {};
@@ -47,7 +45,6 @@ export class AdminLearningService {
       sessionWhere.knowledgeBaseId = filters.knowledgeBaseId;
       progressWhere.knowledgeBaseId = filters.knowledgeBaseId;
     }
-    // Date range
     if (filters?.startDate || filters?.endDate) {
       eventWhere.serverReceivedAt = {};
       if (filters?.startDate) eventWhere.serverReceivedAt.gte = new Date(filters.startDate);
@@ -74,18 +71,14 @@ export class AdminLearningService {
       this.prisma.materialReadingProgress.count({ where: { ...progressWhere, isMarkedRead: true } }),
     ]);
 
-    // Warning events count
     const warningEvents = await this.prisma.readingEvent.count({ where: { ...eventWhere, status: 'warning' } });
 
     return {
-      overview: {
-        totalEvents, todayEvents, failedEvents, duplicateEvents, warningEvents,
-        totalActiveSeconds: 0, // requires aggregation query, keep as 0 for now
-      },
+      overview: { totalEvents, todayEvents, failedEvents, duplicateEvents, warningEvents, totalActiveSeconds: 0 },
       sessions: { active: activeSessions, interrupted: interruptedSessions, completed: completedSessions, total: totalSessions },
       users: { activeToday: activeToday.length, totalWithEvents: 0 },
       materials: { totalRead, totalMarkedRead },
-      recentAnomalies: [], // separate endpoint for this
+      recentAnomalies: [],
     };
   }
 
@@ -93,7 +86,8 @@ export class AdminLearningService {
 
   async getReadingEvents(query: {
     userId?: string; materialId?: string; readingTargetType?: string;
-    eventType?: string; status?: string; startDate?: string; endDate?: string;
+    eventType?: string; status?: string; errorCode?: string;
+    startDate?: string; endDate?: string;
     page?: number; limit?: number; sortBy?: string; order?: 'asc' | 'desc';
   }) {
     const where: any = {};
@@ -102,6 +96,7 @@ export class AdminLearningService {
     if (query.readingTargetType) where.readingTargetType = query.readingTargetType;
     if (query.eventType) where.eventType = query.eventType;
     if (query.status) where.status = query.status;
+    if (query.errorCode) where.errorCode = query.errorCode;
     if (query.startDate || query.endDate) {
       where.serverReceivedAt = {};
       if (query.startDate) where.serverReceivedAt.gte = new Date(query.startDate);
@@ -117,7 +112,6 @@ export class AdminLearningService {
       this.prisma.readingEvent.findMany({ where, orderBy, skip: (page - 1) * limit, take: limit }),
       this.prisma.readingEvent.count({ where }),
     ]);
-
     return { items, total, page, limit };
   }
 
@@ -127,17 +121,6 @@ export class AdminLearningService {
     return event;
   }
 
-  async getFailedEvents(query: { page?: number; limit?: number }) {
-    const where = { status: { in: ['failed', 'warning', 'duplicate'] } };
-    const page = query.page ?? 1;
-    const limit = Math.min(query.limit ?? 20, 100);
-    const [items, total] = await Promise.all([
-      this.prisma.readingEvent.findMany({ where, orderBy: { serverReceivedAt: 'desc' }, skip: (page - 1) * limit, take: limit }),
-      this.prisma.readingEvent.count({ where }),
-    ]);
-    return { items, total, page, limit };
-  }
-
   // ══ Sessions ══
 
   async getSessions(query: { userId?: string; materialId?: string; status?: string; clientSessionId?: string; startDate?: string; endDate?: string; page?: number; limit?: number }) {
@@ -151,12 +134,10 @@ export class AdminLearningService {
 
     const page = query.page ?? 1;
     const limit = Math.min(query.limit ?? 20, 100);
-
     const [items, total] = await Promise.all([
       this.prisma.learningSession.findMany({ where, orderBy: { startedAt: 'desc' }, skip: (page - 1) * limit, take: limit }),
       this.prisma.learningSession.count({ where }),
     ]);
-
     return { items, total, page, limit };
   }
 
@@ -166,17 +147,6 @@ export class AdminLearningService {
     return session;
   }
 
-  async getInterruptedSessions(query: { page?: number; limit?: number }) {
-    const where = { status: 'interrupted' };
-    const page = query.page ?? 1;
-    const limit = Math.min(query.limit ?? 20, 100);
-    const [items, total] = await Promise.all([
-      this.prisma.learningSession.findMany({ where, orderBy: { startedAt: 'desc' }, skip: (page - 1) * limit, take: limit }),
-      this.prisma.learningSession.count({ where }),
-    ]);
-    return { items, total, page, limit };
-  }
-
   // ══ Progress ══
 
   async getProgress(query: { userId?: string; materialId?: string; status?: string; page?: number; limit?: number }) {
@@ -241,6 +211,41 @@ export class AdminLearningService {
     return r;
   }
 
+  // ══ AI Analysis ══
+
+  async getAnalysis(query: { userId?: string; page?: number; limit?: number }) {
+    const where: any = {};
+    if (query.userId) where.userId = query.userId;
+    const page = query.page ?? 1;
+    const limit = Math.min(query.limit ?? 20, 100);
+    const [items, total] = await Promise.all([
+      this.prisma.aiAnalysisResult.findMany({
+        where, orderBy: { createdAt: 'desc' }, skip: (page - 1) * limit, take: limit,
+        select: { id: true, userId: true, jobId: true, summary: true, masteryScore: true, weaknesses: true, strengths: true, createdAt: true },
+      }),
+      this.prisma.aiAnalysisResult.count({ where }),
+    ]);
+    return { items, total, page, limit };
+  }
+
+  // ══ AI Usage ══
+
+  async getAiUsage(query: { userId?: string; model?: string; page?: number; limit?: number }) {
+    const where: any = {};
+    if (query.userId) where.userId = query.userId;
+    if (query.model) where.model = { contains: query.model };
+    const page = query.page ?? 1;
+    const limit = Math.min(query.limit ?? 20, 100);
+    const [items, total] = await Promise.all([
+      this.prisma.aiUsageLog.findMany({
+        where, orderBy: { createdAt: 'desc' }, skip: (page - 1) * limit, take: limit,
+        select: { id: true, userId: true, model: true, provider: true, inputTokens: true, outputTokens: true, estimatedCost: true, success: true, createdAt: true },
+      }),
+      this.prisma.aiUsageLog.count({ where }),
+    ]);
+    return { items, total, page, limit };
+  }
+
   // ══ Timeline ══
 
   async getUserTimeline(userId: string, limit: number = 50) {
@@ -250,14 +255,12 @@ export class AdminLearningService {
       take: Math.min(limit, 200),
       select: { eventId: true, eventType: true, materialId: true, clientTimestampMs: true, status: true },
     });
-
     const sessions = await this.prisma.learningSession.findMany({
       where: { userId },
       orderBy: { startedAt: 'desc' },
       take: Math.min(limit, 50),
       select: { id: true, mode: true, status: true, startedAt: true, endedAt: true, totalActiveSeconds: true },
     });
-
     return { events, sessions };
   }
 
@@ -274,12 +277,7 @@ export class AdminLearningService {
       this.prisma.readingEvent.count({ where: { status: 'failed' } }),
       this.prisma.readingEvent.count({ where: { status: 'duplicate' } }),
     ]);
-
-    return {
-      failed: { items: failed, total: failedTotal },
-      duplicates: { items: duplicates, total: duplicatesTotal },
-      page, limit,
-    };
+    return { failed: { items: failed, total: failedTotal }, duplicates: { items: duplicates, total: duplicatesTotal }, page, limit };
   }
 
   // ══ Diagnose ══
@@ -337,7 +335,6 @@ export class AdminLearningService {
       const snapshot = await this.snapshotBuilder.buildSnapshot(userId, 'user', userId);
       return { status: 'recalculated', userId, snapshotId: snapshot.id };
     }
-    // Recalculate for all active users (limit to 100)
     const users = await this.prisma.dailyLearningActivity.groupBy({ by: ['userId'], _count: true, take: 100, orderBy: { _count: { userId: 'desc' } } });
     const snapshots = await Promise.all(users.map(u =>
       this.snapshotBuilder.buildSnapshot(u.userId, 'user', u.userId).catch(() => null)
diff --git a/src/modules/admin-learning/dto/admin-learning.dto.ts b/src/modules/learning-session/dto/admin-learning.dto.ts
similarity index 100%
rename from src/modules/admin-learning/dto/admin-learning.dto.ts
rename to src/modules/learning-session/dto/admin-learning.dto.ts
diff --git a/src/modules/learning-session/learning-session.module.ts b/src/modules/learning-session/learning-session.module.ts
index 852ae1b..85e4189 100644
--- a/src/modules/learning-session/learning-session.module.ts
+++ b/src/modules/learning-session/learning-session.module.ts
@@ -1,12 +1,16 @@
 import { Module } from '@nestjs/common';
+import { PrismaModule } from '../../infrastructure/database/prisma.module';
+import { AiRuntimeModule } from '../ai-runtime/ai-runtime.module';
 import { LearningSessionController } from './learning-session.controller';
 import { AdminLearningController } from './admin-learning.controller';
+import { AdminLearningService } from './admin-learning.service';
 import { LearningSessionService } from './learning-session.service';
 import { LearningSessionRepository } from './learning-session.repository';
 
 @Module({
+  imports: [PrismaModule, AiRuntimeModule],
   controllers: [LearningSessionController, AdminLearningController],
-  providers: [LearningSessionService, LearningSessionRepository],
+  providers: [AdminLearningService, LearningSessionService, LearningSessionRepository],
   exports: [LearningSessionService, LearningSessionRepository],
 })
 export class LearningSessionModule {}