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

[aiceflower]

Search before asking

• I had searched in the 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?

• Yes I am willing to submit a PR!

[github-actions]

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