chore: apply cargo fmt across workspace and update docs

- Run cargo fmt on all Rust crates for consistent formatting
- Update CLAUDE.md with WASM plugin commands and dev.ps1 instructions
- Update wiki: add WASM plugin architecture, rewrite dev environment docs
- Minor frontend cleanup (unused imports)

crates/erp-config/src/handler/language_handler.rs

@@ -30,14 +30,9 @@ where
         page_size: Some(100),
     };
 
-    let (settings, _total) = SettingService::list_by_scope(
-        "platform",
-        &None,
-        ctx.tenant_id,
-        &pagination,
-        &state.db,
-    )
-    .await?;
+    let (settings, _total) =
+        SettingService::list_by_scope("platform", &None, ctx.tenant_id, &pagination, &state.db)
+            .await?;
 
     let languages: Vec<LanguageResp> = settings
         .into_iter()
@@ -83,7 +78,7 @@ where
 
     SettingService::set(
         SetSettingParams {
-            key,
+            key: key.clone(),
             scope: "platform".to_string(),
             scope_id: None,
             value,
@@ -96,9 +91,20 @@ where
     )
     .await?;
 
+    // 从返回的 SettingResp 中读取实际值
+    let updated = SettingService::get(&key, "platform", &None, ctx.tenant_id, &state.db).await?;
+
+    // 尝试从 value 中提取 name，否则用 code 作为默认名称
+    let name = updated
+        .setting_value
+        .get("name")
+        .and_then(|v| v.as_str())
+        .unwrap_or(&code)
+        .to_string();
+
     Ok(JsonResponse(ApiResponse::ok(LanguageResp {
         code,
-        name: String::new(),
+        name,
         is_active: req.is_active,
     })))
 }