- Remove hardcoded dependencies in kvstore Cargo.toml; use features
instead. This allows for more flexible compilation for different
targets (native vs. WASM).
- Improve logging in vault crate using the `log` crate. This makes
debugging easier and provides more informative output during
execution. Native tests use `env_logger`, WASM tests use
`console_log`.
- Update README to reflect new logging best practices.
- Add cfg attributes to native and wasm modules to improve clarity.
- Update traits.rs to specify Send + Sync behavior expectations.
