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/dictionary_handler.rs

@@ -97,14 +97,8 @@ where
 {
     require_permission(&ctx, "dictionary.update")?;
 
-    let dictionary = DictionaryService::update(
-        id,
-        ctx.tenant_id,
-        ctx.user_id,
-        &req,
-        &state.db,
-    )
-    .await?;
+    let dictionary =
+        DictionaryService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
 
     Ok(Json(ApiResponse::ok(dictionary)))
 }
@@ -185,14 +179,8 @@ where
     req.validate()
         .map_err(|e| AppError::Validation(e.to_string()))?;
 
-    let item = DictionaryService::add_item(
-        dict_id,
-        ctx.tenant_id,
-        ctx.user_id,
-        &req,
-        &state.db,
-    )
-    .await?;
+    let item =
+        DictionaryService::add_item(dict_id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
 
     Ok(Json(ApiResponse::ok(item)))
 }
@@ -214,20 +202,12 @@ where
     require_permission(&ctx, "dictionary.update")?;
 
     // 验证 item_id 属于 dict_id
-    let item = DictionaryService::update_item(
-        item_id,
-        ctx.tenant_id,
-        ctx.user_id,
-        &req,
-        &state.db,
-    )
-    .await?;
+    let item = DictionaryService::update_item(item_id, ctx.tenant_id, ctx.user_id, &req, &state.db)
+        .await?;
 
     // 确保 item 属于指定的 dictionary
     if item.dictionary_id != dict_id {
-        return Err(AppError::Validation(
-            "字典项不属于指定的字典".to_string(),
-        ));
+        return Err(AppError::Validation("字典项不属于指定的字典".to_string()));
     }
 
     Ok(Json(ApiResponse::ok(item)))

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,
     })))
 }

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

@@ -142,8 +142,7 @@ where
                     role_ids: item.role_ids.clone(),
                     version,
                 };
-                MenuService::update(id, ctx.tenant_id, ctx.user_id, &update_req, &state.db)
-                    .await?;
+                MenuService::update(id, ctx.tenant_id, ctx.user_id, &update_req, &state.db).await?;
             }
             None => {
                 let create_req = CreateMenuReq {

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

@@ -91,8 +91,7 @@ where
 {
     require_permission(&ctx, "numbering.update")?;
 
-    let rule =
-        NumberingService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
+    let rule = NumberingService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
 
     Ok(Json(ApiResponse::ok(rule)))
 }

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

@@ -25,8 +25,7 @@ where
 {
     require_permission(&ctx, "theme.read")?;
 
-    let setting =
-        SettingService::get("theme", "tenant", &None, ctx.tenant_id, &state.db).await?;
+    let setting = SettingService::get("theme", "tenant", &None, ctx.tenant_id, &state.db).await?;
 
     let theme: ThemeResp = serde_json::from_value(setting.setting_value)
         .map_err(|e| AppError::Validation(format!("主题配置解析失败: {e}")))?;