Crate claude_version_core 

claude_version_core

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

Responsibility Table

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

Depends only on claude_core — no CLI framework dependencies.

Modules

• config_catalog: Known settings catalog (SettingDef registry)
• config_resolve: 4-layer effective-value resolution engine
• 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

config_catalog

Settings catalog: known Claude Code configuration keys with their env var mappings and catalog default values.

config_resolve

4-layer config resolution engine: env var → project config → user config → catalog default.

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.