feat: modular resource handlers and simulation-based safety layer

[Fankouzu]

This PR introduces a significant architectural refactor to improve extensibility and safety.
Key changes:

1. Modular Adapters: AWS resource handlers (EC2, S3, RDS) are now refactored into a provider-based architecture in .
2. Safety Simulation: Added a validation layer that supports dry-run/simulation before committing changes to cloud infrastructure.
3. Risk Scoring: Integrated automatic risk assessment for destructive operations (e.g., deletion).
4. Enhanced Prompts: Re-engineered core reasoning templates to mandate verification steps.

[hoalongnatsu]

@Fankouzu thank for the PR, I'll check it