fix(docker): resolve container networking and DB compatibility issues (#560)

- Auto-detect Docker container environment and use service name
  'hermes-agent' as default host instead of 127.0.0.1
- Replace hardcoded column names with SELECT * in session DB queries
  to compat with older Hermes agent state.db schemas
- Remove unused UPSTREAM env var from docker-compose.yml
- Include err.message in syncFromHermes failure logs
- Add group chat rule to prevent self-mentioning

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/server/src/services/hermes/context-engine/prompt.ts

@@ -53,6 +53,7 @@ ${memberSection}
 
 规则：
 - 有人用 @${params.agentName} 提及你时才需要回复，重点回应提及你的人。
+- 禁止@自己。
 - 回答简洁、对群聊有帮助。
 - 不要假装是人类，需要时明确表明自己是 AI。
 - 对话历史中包含多个人的消息，每条消息前标有发送者名字。