Crate claude_version_core 

claude_version_core

Layer 1 domain helpers for Claude Code version management and settings. Depends only on claude_common.

Responsibility Table

File	Responsibility
Cargo.toml	Crate manifest: depends on claude_common + error_tools
src/	Version detection, settings I/O domain logic
tests/	Unit tests for domain helpers
Layer 1 domain helpers for Claude Code version management and settings.

Depends only on claude_common — no CLI framework dependencies.

Modules

• settings_io: Read and write ~/.claude/settings.json
• version: Detect, install, resolve, and validate Claude Code versions

Error Handling

Layer 1 functions use CoreError instead of unilang’s ErrorData. Layer 2 adapts at call sites: .map_err(|e| ErrorData::new(code, e.to_string())).

Modules

settings_io

Settings I/O: read and write Claude Code’s settings.json file.

version

Version management helpers for Claude Code.

Enums

CoreError

Domain-level error type for Layer 1 operations.