[feature][CGS][manager] fix npe when updating metrics during engine creation and reuse

### Search before asking

- [x] I had searched in the [issues](https://github.com/apache/linkis/issues) and found no similar feature requirement.

### Problem Description

Linkis logging needs optimization for better debugging and AI development conventions need documentation.

### Description

This feature includes:
1. Linkis logging optimization for better debugging
2. AI convention documentation for development guidelines

### Use case

1. Improve debugging capability with enhanced logging
2. Provide AI development conventions for team reference

### Solutions

1. Optimized logging configuration and output
2. Added AI development convention documentation

### Anything else

None.

### Are you willing to submit a PR?

- [x] Yes I am willing to submit a PR!