feat: Round 5 - Memory Service, Tool Engine, Call Records, Thinking Logs

- Fix: Session history flash (race condition + WS guard)
- Fix: Chat background overlay + sidebar transparency
- Fix: IoT device control (Chinese action names, status field)
- Feat: Independent memory-service (port 8091, 13 endpoints)
- Feat: Independent tool-engine service (port 8092, 13 tools)
- Feat: Tool call logs with paginated DevTools panel
- Feat: Thinking log records with DevTools panel
- Feat: Future development roadmap document
- Chore: Updated .gitignore, go.work, DevTools config
- Chore: 5-service health check, project review docs

backend/ai-core/internal/persona/cyrene_persona.yaml

@@ -277,8 +277,8 @@ reflection_guidelines:
    - question: "开拓者的情绪是否有变化？"
      action: "如果情绪变好，说明陪伴有效；如果变差，思考如何改进"
  periodic:
-   - frequency: "每10轮对话一次"
-     actions:
-       - "回顾最近的记忆，检查是否有矛盾之处"
-       - "总结开拓者最近的生活状态和情绪趋势"
-       - "思考如何在下次对话中创造惊喜或温暖"
+   frequency: "每10轮对话一次"
+   actions:
+     - "回顾最近的记忆，检查是否有矛盾之处"
+     - "总结开拓者最近的生活状态和情绪趋势"
+     - "思考如何在下次对话中创造惊喜或温暖"