fix: add interfacte assertion for readability

[zchee]

Add interfacte assertion for readability.

• Except import cycle
• Except embedded struct

[gemini-code-assist]

Summary of Changes

Hello @zchee, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the robustness and clarity of the codebase by systematically adding compile-time interface assertions. This practice ensures that structs intended to implement specific interfaces correctly adhere to their contracts, providing immediate feedback during development if an interface is not fully satisfied. The widespread application of these assertions across client, server, and internal components significantly boosts the project's type safety and maintainability.

Highlights

• Compile-time Interface Assertions: Introduced var _ InterfaceName = (*StructName)(nil) assertions across a wide range of structs and interfaces. This Go idiom ensures that a struct satisfies a given interface at compile time, improving type safety and catching potential mismatches early.
• Improved Readability and Maintainability: By explicitly stating interface implementations, the code becomes more self-documenting, making it easier for developers to understand the intended contract of each type and reducing the cognitive load when reading the code.
• Minor Code Formatting: Several files received minor formatting adjustments, such as the removal of unnecessary empty lines or consolidation of var declarations, contributing to overall code cleanliness.

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[gemini-code-assist]

Code Review

This pull request adds compile-time interface assertions across multiple files, a commendable practice in Go for ensuring type safety and improving maintainability. The changes are applied consistently and correctly. The PR also includes minor but welcome formatting improvements, such as simplifying var blocks, which enhance code readability. A small typo was noted in the pull request title and description ('interfacte' should be 'interface'), which should be corrected for clarity. Overall, these are solid improvements to the codebase.