Optimize core compiler and type-detection fast paths

[cofin]

Summary

Compilation and type-detection paths should avoid repeated runtime work in frequently used statement processing flows.

Scope

• Streamline compiler configuration and parameter-config access on hot paths.
• Reduce repeated type detection and dynamic checks where static helpers are sufficient.
• Preserve generated SQL, parameter handling, and dialect behavior.

Validation

Covered by compiler and type-conversion unit tests, type checks, and the core unit suite in PR #545.