chore: workspace 加 gui 成员，qr-core 加 serde

core/Cargo.toml

@@ -7,5 +7,6 @@ authors.workspace = true
 
 [dependencies]
 image = { version = "0.25", default-features = false, features = ["png"] }
+serde = { version = "1", features = ["derive"] }
 
 [dev-dependencies]

core/src/version.rs

@@ -1,7 +1,8 @@
 use std::sync::OnceLock;
+use serde::Serialize;
 
 /// 纠错级别
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
 pub enum EcLevel {
     L, // 约 7%
     M, // 约 15%
@@ -22,7 +23,7 @@ impl EcLevel {
 }
 
 /// 版本号 1~40
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
 pub struct Version(pub u8);
 
 impl Version {