maintainability

[pando85]

Refactor for long-term maintainability: reduce complexity, eliminate duplication, tighten interfaces, improve naming and module boundaries, add focused tests, and preserve behavior with minimal, well-justified changes.

[pando85]

@forkline take this

[forkline-bot]

Summary

Completed maintainability refactoring for issue #58. Created PR #59: #59

Changes (6 commits):

Commit	Description
4943e21	Extract shared test utilities to eliminate duplication
f344797	Standardize annotation constant naming (all use _ANNOTATION suffix)
4f21ec4	Simplify reconcile_network logic with helper methods
7fa9a4b	Tighten visibility of internal types (pub(super)/pub(crate))
359d7a8	Add documentation for metrics module
a3888b6	Fix clippy warnings and remove unused LBService

Verification:

• ✅ All 27 tests pass
• ✅ No clippy warnings (cargo clippy -- -D warnings)
• ✅ No functional changes - behavior preserved