* chore: update CI, golangci-lint, and CLAUDE.md
* fix: resolve CI failures on Windows test and lint
* fix: resolve Windows test path and main.go line length lint issues
* fix: auto-format log/ with gofumpt, exclude pre-refactoring lint issues
* fix: resolve remaining lint issues, remove unnecessary exclusions
* fix: remove invalid G117 gosec rule, use text exclusion for secret pattern
* fix: align CI golangci-lint version with local (v2.4 -> v2.10)
- Add RFC-001 for architecture refactoring proposal
- Add CLAUDE.md with development guidelines and security analysis
- Document current issues and proposed solutions for library support
- Include cross-platform considerations and encryption versioning
The RFC addresses key architectural challenges:
* Limited encryption version support (only v10)
* Scattered cross-platform MasterKey retrieval
* Windows Cookie file access permission issues
* Coupled code architecture preventing library usage
* Inconsistent error handling
* Testing and maintenance difficulties
Proposed improvements include versioned encryption strategies,
unified MasterKey abstraction, and a clean library API design.