feat: codebase enhancement.

[k82cn]

fix: #375

[gemini-code-assist]

Summary of Changes

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This pull request introduces a foundational set of documentation for a significant codebase enhancement initiative, RFE375. It provides a structured, phased approach to improve the overall quality, reliability, and maintainability of the Flame project. The changes lay out a detailed plan to tackle critical issues, enhance core components, and improve developer experience through better testing, documentation, and CI/CD practices.

Highlights

• Codebase Enhancement Plan (RFE375) Introduced: A comprehensive plan (RFE375) has been established to address technical debt and improve code quality across the Flame project, focusing on reliability, maintainability, developer experience, and quality assurance.
• Detailed Functional Specification: A new Functional Specification (FS.md) outlines 14 specific enhancement tasks categorized into four phases, complete with problem statements, actions, and acceptance criteria for each task.
• Changelog and Status Tracking: Dedicated documents (CHANGELOG.md and STATUS.md) have been added to track the progress, metrics, and notable changes for the RFE375 initiative, providing transparency and a clear roadmap.

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[gemini-code-assist]

Code Review

This pull request introduces a comprehensive and well-structured codebase enhancement plan (RFE375) through new design documents. The plan addresses key areas like code safety, architecture, testing, and documentation. My review focuses on potential issues within the proposed plan. I've identified a significant concern regarding the logger initialization strategy for the Rust SDK, which could conflict with applications using it. I've also noted a minor typo in the status tracking document. Overall, this is a valuable initiative to improve the codebase.

[gemini-code-assist]

The plan to create a 'Single implementation' for logger initialization for the Rust SDK (sdk/rust/) could cause issues for consumers of the library. Libraries should avoid configuring global logging, as it can conflict with the application's own logging setup.

This approach may violate the repository's general rule about logging in libraries.

I recommend refining this action item to explicitly state that the unified logger implementation will not modify global state. Instead, it should be designed to be configurable, allowing applications to integrate it with their own logging infrastructure. For example, by accepting a logger instance or providing clear documentation on how to set it up.

References

1. In a library, avoid modifying the global logging configuration for dependencies. This can cause conflicts with the application's own logging setup. Instead, document how users can configure logging or provide an opt-in utility (like a context manager) for temporary log level adjustments.

[gemini-code-assist]

There seems to be a typo in the decision log. This document is for RFE375, but the rationale mentions 'Created RFE372'. Please correct this to ensure consistency.

Suggested change

	| 2026-03-17 | Created RFE372 | Comprehensive codebase review identified 89 enhancement opportunities |
	| 2026-03-17 | Created RFE375 | Comprehensive codebase review identified 89 enhancement opportunities |