fix: 修复跨 crate 可见性与 Version 导入，补充 semver 依赖

- updater_impl.rs: Version 改从 semver 导入（tauri_plugin_updater::Version 是私有）

- files.rs: 移除未使用的 list 导入

- state/mod.rs: update_http_client_for_settings 由 pub(crate) 改 pub（apps/app 跨 crate 调用）

- workspace 与 apps/app 补充 semver 依赖，同步 Cargo.lock

Cargo.toml

@@ -84,6 +84,7 @@ rgb = "0.8.52"
 rustls = { version = "0.23.42", default-features = false, features = ["ring", "std", "tls12"] }
 rustls-native-certs = "0.8.4"
 rustls-pki-types = "1.15.0"
+semver = "1.0.28"
 serde = "1.0.228"
 serde_bytes = "0.11.19"
 serde_cbor = "0.11.2"