袁聪的第一次提交，包含nl2sql,行情数据,场外申购

.env.example

@@ -13,6 +13,7 @@ JWT_CLOCK_SKEW_SECONDS=30
 MYSQL_DSN=mysql+asyncmy://jr_app:change-me@127.0.0.1:3306/jr_agent
 MYSQL_POOL_SIZE=5
 MYSQL_MAX_OVERFLOW=10
+MYSQL_POOL_PRE_PING=false
 MYSQL_TX_ISOLATION=READ COMMITTED
 
 REDIS_URL=redis://127.0.0.1:6379/0
@@ -42,3 +43,41 @@ WORKER_LEASE_SECONDS=60
 WORKER_RETRY_LIMIT=3
 WORKER_POLL_SECONDS=1
 SSE_CHUNK_CHARACTERS=256
+
+OFFSITE_MAILBOX=15273589815@163.com
+OFFSITE_ALLOWED_SENDERS=["15008108550@163.com"]
+OFFSITE_RISK_RECEIVER_ID=
+OFFSITE_SETTLEMENT_RECEIVER_ID=
+OFFSITE_MAIL_RETURN_RECEIVER=15008108550@163.com
+OFFSITE_MAX_RETRY_COUNT=3
+OFFSITE_IMAP_ENABLED=false
+OFFSITE_IMAP_HOST=
+OFFSITE_IMAP_PORT=993
+OFFSITE_IMAP_USERNAME=
+OFFSITE_IMAP_PASSWORD=
+OFFSITE_IMAP_USE_SSL=true
+OFFSITE_IMAP_IDLE_ENABLED=false
+OFFSITE_MAIL_WORKER_ENABLED=false
+OFFSITE_MAIL_WORKER_BATCH_SIZE=20
+OFFSITE_WORKER_USER_ID=
+OFFSITE_NOTIFICATION_SENDING_TIMEOUT_SECONDS=900
+OFFSITE_MAIL_STORAGE_DIR=data/offsite_mail
+OFFSITE_OCR_ENABLED=false
+OFFSITE_OCR_TIMEOUT_SECONDS=30
+OFFSITE_ALIYUN_OCR_ENDPOINT=
+OFFSITE_ALIYUN_ACCESS_KEY_ID=
+OFFSITE_ALIYUN_ACCESS_KEY_SECRET=
+OFFSITE_DEEPSEEK_ENABLED=false
+OFFSITE_DEEPSEEK_BASE_URL=https://api.deepseek.com
+OFFSITE_DEEPSEEK_API_KEY=
+OFFSITE_DEEPSEEK_MODEL=deepseek-v4-flash
+OFFSITE_DEEPSEEK_TIMEOUT_SECONDS=30
+OFFSITE_SMTP_ENABLED=false
+OFFSITE_SMTP_DRY_RUN=true
+OFFSITE_SMTP_HOST=
+OFFSITE_SMTP_PORT=465
+OFFSITE_SMTP_USERNAME=
+OFFSITE_SMTP_PASSWORD=
+OFFSITE_SMTP_SENDER=
+OFFSITE_SMTP_USE_SSL=true
+OFFSITE_SMTP_TIMEOUT_SECONDS=30