Pass chatId/messageId through agent pipeline for sub-agent access

- Add chatId/messageId to AgentToolContext
- Update BaseAgent.processConsultation to accept meta parameter
- Update agent-registry routeToActiveAgent to forward meta
- Fix session end detection to check __SESSION_END__ in finalResponse

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/agents/agent-registry.ts

@@ -14,7 +14,8 @@ const logger = createLogger('agent-registry');
 export interface RegisterableAgent {
   hasSession(db: D1Database, userId: string): Promise<boolean>;
   processConsultation(
-    db: D1Database, userId: string, userMessage: string, env: Env
+    db: D1Database, userId: string, userMessage: string, env: Env,
+    meta?: { chatId?: number; messageId?: number }
   ): Promise<string>;
 }
 
@@ -53,7 +54,8 @@ export async function routeToActiveAgent(
   db: D1Database,
   userId: string,
   userMessage: string,
-  env: Env
+  env: Env,
+  meta?: { chatId?: number; messageId?: number }
 ): Promise<AgentRouteResult | null> {
   for (const entry of registry) {
     try {
@@ -66,7 +68,7 @@ export async function routeToActiveAgent(
       });
 
       const response = await entry.agent.processConsultation(
-        db, userId, userMessage, env
+        db, userId, userMessage, env, meta
       );
 
       // PASSTHROUGH: 무관한 메시지, 다음 에이전트 확인

src/agents/base-agent.ts

@@ -22,6 +22,8 @@ export interface AgentToolContext {
   userId: string;
   env: Env;
   db: D1Database;
+  chatId?: number;
+  messageId?: number;
 }
 
 export interface AgentAIResult {
@@ -71,7 +73,8 @@ export abstract class BaseAgent<TSession extends BaseSession> {
     db: D1Database,
     userId: string,
     userMessage: string,
-    env: Env
+    env: Env,
+    meta?: { chatId?: number; messageId?: number }
   ): Promise<string> {
     const log = createLogger(this.agentName);
     const startTime = Date.now();
@@ -88,7 +91,11 @@ export abstract class BaseAgent<TSession extends BaseSession> {
       this.sessionManager.addMessage(session, 'user', userMessage);
 
       // 3. Call AI
-      const context: AgentToolContext = { userId, env, db };
+      const context: AgentToolContext = {
+        userId, env, db,
+        chatId: meta?.chatId,
+        messageId: meta?.messageId,
+      };
       const aiResult = await this.callExpertAI(session, userMessage, env, context);
 
       // 4. Handle PASSTHROUGH
@@ -114,8 +121,9 @@ export abstract class BaseAgent<TSession extends BaseSession> {
         }
       }
 
-      // 6. Detect session end (both markers)
+      // 6. Detect session end (both markers, check both finalResponse and aiResult)
       const isSessionEnd = finalResponse.includes('[세션 종료]')
+        || finalResponse.includes('__SESSION_END__')
         || aiResult.response.includes('__SESSION_END__');
 
       if (isSessionEnd) {