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-server/src/handlers/openapi.rs

@@ -6,14 +6,9 @@ use utoipa::openapi::OpenApiBuilder;
 ///
 /// 返回 OpenAPI 3.0 规范 JSON 文档
 pub async fn openapi_spec() -> Json<Value> {
-    let mut info = utoipa::openapi::Info::new(
-        "ERP Platform API",
-        env!("CARGO_PKG_VERSION"),
-    );
+    let mut info = utoipa::openapi::Info::new("ERP Platform API", env!("CARGO_PKG_VERSION"));
     info.description = Some("ERP 平台底座 REST API 文档".to_string());
 
-    let spec = OpenApiBuilder::new()
-        .info(info)
-        .build();
+    let spec = OpenApiBuilder::new().info(info).build();
     Json(serde_json::to_value(spec).unwrap_or_default())
 }